KR101585888B1 - closed circuit type plume abatement counterflow cooling tower and Free cooling system using the same - Google Patents

Abstract

The present invention relates to a closed type white smoke reducing counterflow cooling tower and an outdoor air cooling system using the same. More specifically, the closed type white smoke reducing counterflow cooling tower and an outdoor air cooling system using the same can efficiently product cool water and save operating and maintenance costs. The closed type white smoke reducing counterflow cooling tower and an outdoor air cooling system using the same comprise: a second dry heat exchange unit disposed in an exhaust area (6) to carry out dry cooling and reduce white smoke; a bypass exhaust opening and closing unit provided between a first dry heat exchange unit and the second dry heat exchange unit; a cooling high temperature fluid opening and closing control valve (111) provided in a high temperature fluid supply pipe (131a); a cooling high temperature fluid opening and closing control valve (112) provided in a cooling high temperature fluid discharge pipe (132a); and a control unit (200).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling tower of a closed type counterflow cooling tower,

The present invention relates to a white smoke reducing closed countercurrent cooling tower and an outdoor air cooling system using the same, and more particularly, to a system and method for switching a wet cooling system, a white smoke reducing system, a dry cooling system, It is possible to actively cope with the fluctuation of the load of the cooling of the high temperature fluid and the production of the cold water and to enlarge the dry cooling heat exchange area and to further improve the white smoke reducing efficiency and to improve the white smoke reducing heat dry heat exchange It is possible to reduce the consumption power of the blowing fan by circulating the exhaust passing through the exhaust portion to the exhaust port and to block the high temperature fluid flowing through the dry heat exchanger during the wet cooling operation and to flow to the closed heat exchanger, And the cooling fluid whose cooling is satisfied in the dry heat exchanging portion during the dry cooling operation is circulated to the cooling load portion It is possible to reduce the consumption power of the high temperature fluid pump and to prevent the contamination of the heat exchange system and the pipeline in which the fluid is circulated and to use the low temperature outside air in place of the freezer in the winter season or the middle season (early spring or late autumn) It is possible to efficiently produce cold water using the cooling medium and to save the energy of generating cold water and to cool the cold water of the cooling tower by the cooling device It is possible to supply the fluid easily and to maximize the production period of the outdoor cooling cold water and to efficiently control the switching operation of the wet cooling, the white smoke reducing humidity-dry cooling, the wet-dry cooling, , Which can reduce the operation and maintenance cost, and a cooling system for outdoor air using the same .

Generally, air conditioning equipment and refrigeration. Refrigerators or industrial heat exchangers operated in refrigerators or the like are accompanied by waste heat to be removed which is transferred from the cooling fluid (cooling water or refrigerant) flowing in the cooling tower to the cooling air and discharged to the atmosphere.

The heat rejection type of the cooling tower is a type of heat rejection type in which a portion of a cooling fluid flowing in contact with cooling air in a wet cooling type heat exchanger is evaporated, The waste heat of a high temperature fluid flowing in a closed heat transfer tube of an evaporative cooling or wet cooling or a dry cooling type heat exchanger for cooling a tube wall A hybrid cooling type heat exchanger (hereinafter referred to as " hybrid cooling type heat exchanger ") that combines a wet cooling heat exchange unit and a dry cooling heat exchange unit to cool the high temperature fluid through sensible heat of the cooling air, And a hybrid cooling method in which the high temperature fluid is cooled through the heat exchanger (not shown).

The cooling action can be divided into fluid cooling to lower the temperature of the liquid (cooling water, cooling oil, etc.), and fluid condensation to cool the gas (refrigerant gas, steam, etc.) by condensing.

The cooling air and the cooling fluid flow are divided into a counter flow type in which the cooling air flows upward and a cooling fluid flows downward, an orthogonal flow type in which the cooling air flows horizontally and the cooling fluid flows downward, a cross flow type, and a parallel flow type that flows in the same direction as the cooling air and the cooling fluid,

The opposite-flow type cooling tower to be the object of the present invention is a counterflow type cooling tower; It has advantages such as high heat exchange efficiency, small installation area, low recirculation, low windage drift loss, reduction of water pollution due to photosynthesis of sunlight and reduction of hardening loss of PVC heat exchanger. Of course, it is widely used in the field of industrial cooling.

The system of the heat exchanger includes an open circuit-wet cooling type heat exchanger in which the cooling fluid and the cooling air flow into the fillers and evaporate heat exchanged by mutual contact, a closed heat transfer tube A wet-type heat exchanger (a closed-circuit-wet cooling type heat exchanger) in which the cooling fluid (cooling water) and the cooling air are in contact with each other on the outer surface of the hybrid type heat exchanger And a closed circuit-dry cooling type heat exchanger for performing sensible heat exchange while flowing cooling air on an outer surface of a closed heat transfer tube through which a fluid to be cooled flows,

The closed type cooling tower having the hermetically sealed heat exchanger to be the subject of the present invention is capable of switching cooling between wet cooling and dry cooling compared to an open cooling tower, easy to apply to an outside air cooling system, easy to adapt to air pollution, difficult to accommodate in a PVC open type heat exchanger It is easy to apply high temperature fluid (high temperature cooling water) for cooling, prevention of water pollution in cooling fluid circulation system and heat exchanger system, cooling power consumption (dry cooling) and water saving, low maintenance. It is widely used not only for air conditioning but also for outdoor cooling system and industrial process cooling.

The ventilation system is a natural draft type that uses rising wind force due to difference in the inner and outer air density of natural wind or tower, a mechanical draft type that forced air through a blowing fan, , And an ejector draft type in which air is blown using a cooling fluid injection attractive force of an ejector.

In addition, the air blowing type is an induced draft type in which high temperature cooling air (hereinafter referred to as "exhaust") that has undergone heat exchange in the heat exchanging portion is sucked and discharged to the outside, And a forced draft type in which exhaust gas after heat exchange in the heat exchange section is discharged to the outside.

The discharge method of the exhaust includes a vertical exhaust type which vertically upwardly discharges through a fan cylinder vertical to the upper casing, a horizontal exhaust which horizontally discharges through a fan cylinder configured horizontally in the side casing (Horizontal exhaust type).

In addition, the blowing fan type can be classified into an axial type fan generally used in a suction ventilation type and a centrifugal type fan used in a press-in ventilation type.

In addition, the driving method of the blowing fan can be classified into a belt drive type, a gear reducer drive type, and a direct drive type.

The casing structure of the cooling tower is generally divided into a square type and a round type, but other types of casing such as an elliptical shape and a polygonal shape are also applicable.

Next, the cooling tower removes waste heat at the lowest cost and contributes to the conservation of water resources by reusing the water. On the other hand, the cooling tower can be used as a drift and a plume discharged through the exhaust port of the cooling tower, Noise and vibration due to driving, and provision of habitat of legionella bacteria.

In the environmental problem of such a cooling tower, white smoke as an object of the present invention will be described.

The white smoke is generated by the condensation of moisture contained in the saturated moisture vaporizer when the high temperature saturated vaporizer (RH 100%) is mixed with the low temperature atmosphere after the evaporation heat exchange from the cooling tower is completed and the lower atmospheric temperature The higher the relative humidity, the higher the visibility tends to be.

In domestic climate, white smoke may occur all the time in January-March and December in winter, and in April and November. In May-October, there are high-humidity rainy season, White smoke is generated intermittently.

The white smoke is generated not only at low temperature and high relative humidity (atmospheric) but also at high temperature and high relative humidity such as summer rainy season. Even if the relative humidity is very low, the white smoke may not be generated because the water contained in the exhaust gas is directly evaporated from the atmosphere.

Therefore, as long as the cooling tower is operated, the whiteness only occurs when there is a difference in the degree of visibility between the high and low visibility of the weather condition in which the white smoke occurs in any season.

In addition, since the physical properties of white smoke are pure water vapor, they do not belong to the air pollution source but are harmless to the human body. However, due to the shape such as smoke, visual perception of pollution, fire misunderstanding, deterioration of the beauty of the surrounding environment, Conveyance causes civil complaints on the grounds of hate and obstacles (watches), and in the case of a low-pressure climate in the winter season, it reduces the synergistic effect of the white smoke stream and distributes condensed water to the outside of the boundary area as well as around the cooling tower, Freezing the surface of the substrate.

Since the problem of white smoke has deepened, the cooling tower industry in the US and Europe has begun to develop white smoke countermeasures in earnest, and the research and development of domestic and foreign industries have been continued to reduce white smoke.

In addition, the plume or white smoke generated through the exhaust gas discharged to the atmosphere through the exhaust port of the cooling tower can reduce the visible effect of the white smoke in proportion to the decrease in the amount of water contained in the exhaust gas, The initial investment cost of the white smoke reducing apparatus can be increased.

It is not possible to prevent the occurrence of white smoke unless the water contained in the exhaust gas is completely removed by heating with a separate heat source at a high temperature. In the case where the white smoke reducing means is further adopted in the cooling tower, There is a limitation in selection because the initial investment and operation cost (cooling tower main body, dry heat exchanger, blower fan, high temperature fluid pump, etc.) must be followed.

In terms of means for reducing ordinary white smoke and its characteristics,

The exhaust of the saturated moisture vaporizer through the wet heat exchanger is passed through a dry heat exchanger (heating heat exchanger) that uses a high temperature fluid flowing into the cooling tower as a heating medium, while simultaneously reducing the humidity while discharging exhaust of low humidity to reduce white smoke The self heat-source type white smoke reducing means,

Since the heating energy source is used as a high-temperature fluid at 37 to 40 ° C, the heating energy cost due to the white smoke reduction operation is not generated. Therefore, a separate heat source for heating the heating source at a higher temperature (60 ° C or more) (Dry heat exchanger), which is significantly larger than the smelting reduction device of the formula (steam, electric heat, etc.), the initial investment cost can be increased and the effect of reducing the white smoke is significantly lower than that of the separate heat source .

A separate heat source unit for reducing the humidity while reducing the humidity while passing the exhaust of the saturated moisture vaporizer through the wet heat exchanger to the dry heat exchanger unit that uses any one selected from steam, hot water or electricity as a heat source, As the white smoke reducing means,

However, since the heating load is large due to the heating of the entire amount of the saturated moisture vaporizer through the wet heat exchanger, and the huge heating energy cost corresponding to the load is increased, the increase of the initial investment cost and the large operation cost The adoption of which is extremely limited.

A dry air passage (air only flow) and a wet air passage (cooling fluid and air flow) partitioned by a filler are constituted and a high-temperature fluid flowing through a dry air passage flows from a high-temperature fluid through a filler sheet A self-heat-source type whitener reducing device of a wet / dry air-blowing structure that heats exhaust (saturated moisture) by transmitted sensible heat exchange and simultaneously reduces humidity and discharges exhaust of low humidity to reduce white smoke,

Since the initial investment cost is low, a separate dry air passage must be formed in the wet cooling heat exchanger (filler), so that the volume of the heat exchanger, the volume of the cooling tower and the installation area The cost of the cooling tower is increased and the installation area is secured. In addition, the effect of reducing the amount of white smoke compared to the other types of white smoke reducing means is low.

In a plastic heat exchanger pack which forms a high-temperature exhaust flow channel of a divided saturated moisture vaporizer and a low-temperature outside air flow channel integrally with a recently developed white smoke reducing device, unlike a conventional heating type white smoke reduction cooling tower, A cooling condensation type plume abatement means for cooling the hot exhaust while flowing exhaust gas and low temperature outside air to cool and condense the moisture contained in the hot exhaust and to separate the exhaust from the exhaust,

 Saturated humidity ventilation has an almost constant temperature and humidity, while the temperature and humidity of the outside air are variable, so that the condensation efficiency (ie, white smoke reduction efficiency) of water changes according to the temperature and humidity change of the outside air. In addition, the efficiency of reducing the white smoke does not surpass the conventional efficiency of reducing the amount of white smoke, and the installation of a large number of complicated plastic heat exchanger packs having a large installation volume in the exhaust area can increase the height of the cooling tower As the outside air is directly introduced into the plastic heat exchanger pack, the increase of the supply mechanism and the increase of the size of the cooling tower can increase the cost of the cooling tower and damage the beauty.

Next, a cooling apparatus using cooling fluid of a cooling tower, an outside air cooling system. The vapor compression type chiller used in refrigeration and refrigeration systems is a type of refrigerant compressor which compresses refrigerant vapor, condensation of refrigerant vapor, expansion of refrigerant liquid, evaporation of refrigerant liquid, A refrigerating cycle is applied.

And in refrigerant compressors, the compressor is cold. The refrigerant vapor is sucked by a low pressure refrigerant vapor to be compressed at a high temperature and a high pressure so that it can be easily condensed at room temperature. The refrigerant is discharged to a condenser. The condenser condenses heat of the high temperature and high pressure refrigerant vapor flowing through the cooling medium, The refrigerant liquid discharged into the atmosphere and phase-changed into a liquid phase is discharged to an expansion device. The expansion device pressure drops the refrigerant introduced from the condenser to evaporate easily in the evaporator, The evaporator evaporates the low-pressure refrigerant liquid into the gaseous state while absorbing the latent heat of vaporization required for the evaporation from the refrigerant (cold water or air) Thereby performing a cooling or freezing operation.

Also, the refrigerant compression refrigerator driven by electric energy may be a reciprocating refrigerator having a reciprocating type compressor, a screw compressor having a screw type compressor, a rotary type compressor rotary refrigerator , A scroll type refrigerator having a scroll type compressor, and a centrifugal type freezer having a centrifugal type compressor.

Next, the absorption type chiller and the absorption type chiller-heater used in the air conditioning system and the outdoor air cooling system reproduce the dilute solution as a concentrated solution, an operating cycle is applied to the condensation of the refrigerant vapor, the evaporation of the refrigerant liquid and the absorption of the refrigerant vapor.

In an absorption type refrigerator (or an absorption type cold water heater) which produces cold water by using a fuel such as gas, high temperature water supplied from a heat source plant or a heat source of a low temperature water, a generator is used to supply a dilution absorption liquid The concentrated absorption liquid produced by heating flows out to the absorber. The condenser circulates the refrigerant vapor introduced from the regenerator through a cooling medium to heat the condensed heat to the atmosphere. The liquid phase-changed refrigerant liquid flows out to the evaporator. The refrigerant vapor is evaporated in a gaseous state while being dispersed, and the latent heat of evaporation necessary for evaporation is absorbed from the cooled medium (cold water) and simultaneously cooled to produce cold water. In the heating cycle using the evaporator, And the refrigerant vapor flows through the hot water (return hot water) flowing in the heat transfer tube and the heat exchange And the condensed refrigerant liquid is absorbed into the condensed absorption liquid flowing into the absorber, and flows into the regenerator as the diluted absorptive liquid.

Next, it is expected that the Internet data center (IDC), the mobile communication switching center, the computer center, the large department store, the semiconductor manufacturing facilities requiring constant temperature and humidity, The number of buildings (facilities) in which cooling loads are generated is increasing, the heat loss through the building structure is reduced due to the insulation of the building structure and the air tightness, and the amount of heat generated from the lighting and office automation equipment is increased, (Buildings) are also intermittently cooling in winter, and the cooling period is expanding from summer to mid-season. As a result, it also cools the middle season between winter and winter with low outdoor temperature Demand is increasing.

The heat load generated from the cooling load is increased by the heat transfer amount of the building structure, the infiltration air through ventilation of the occupant and ventilation and the introduction of the outside air corresponding to the ventilation the cooling load ratio of the refrigerator and the cooling tower, which are designed as the cooling load of the summer, can be reduced. Therefore, for example, The cooling can be performed even when cold water at a temperature (approximately 8 to 10 ° C) higher than the normal cold water temperature (7 ° C) supplied to the summer is supplied to the cooling system in the summer (air conditioner or the like) , The free cooling system can be the most economical and efficient cold water alternative cold water production system.

In such an outdoor cooling system, the cooling tower that produces cold water by using free low-temperature outside air as a cooling medium has a very small consumption power (0.026 (kW)) corresponding to 3.7 to 4.9% of the consumption power of the refrigerant compression refrigerator ~ 0.036 kw / CRT) can produce cold water.

Generally, in industry, when the wet bulb temperature is maintained at 7 ° C or less, cold water is produced by operation of the cooling tower. When the wet bulb temperature is in the range of 8 to 18 ° C, To produce cold water. When the wet bulb temperature is 19 ° C or higher, it is proposed to produce cold water by operating the freezer.

A typical prior art direct outdoor cooling system technique that replaces the cold water production of the chiller during the cold outside season and produces cold water using the cold outside air as the cooling medium is described in the ASHRAE- (ASHRAE Handbook / Systems and Equipment (SI) / CHAPTER 36 COOLING TOWERS / Free cooling (page 36.9) "issued by the American Society of Heating and Refrigerating and Air Conditioning Engineers.

Reference 1:

Reference 2:

In addition, a direct cooling system (DFCS), which uses an open cooling tower, has been generally applied to the outdoor cooling system. However, serious problems such as freezing of the louver, heat exchanger (filler) (Economic efficiency and practicality) is low due to limited operation within the freezing safety temperature (for example, 3 ° C to 10 ° C), and it has been a stumbling block to the demand and development. Recently, Technology development and demand substitution of indirect free cooling system (IFCS) which adopts closed cooling tower which can combine dry cooling, expansion of operation period and production cost of cold water. Is progressing.

In addition, the indirect outdoor cooling system (IFCS) can be operated during the entire winter period because it can prevent freezing or freezing by adding antifreeze (ethylene glycol or propylene glycol) to the cooling fluid (generally 40% wt).

In addition, the cooling tower of the outdoor cooling system operated in the low temperature outside season may cause the occurrence of white smoke, so that measures for reducing white smoke may be required.

Hereinafter, an outside air cooling and air-conditioning system using a conventional white smoke reduced crossflow cooling tower and a conventional closed type countercurrent cooling tower will be described with reference to the accompanying drawings.

For the same or similar constitution as that of the present invention shown in the drawings of the prior art, the symbols and names described in the present invention are applied instead of the names and symbols for convenience of contrast, and will be described accordingly.

23 is a schematic side cross-sectional view of a conventional white smoke reducing closed countercurrent cooling tower.

Hereinafter, the conventional white smoke reduction closed countercurrent cooling tower of FIG. 23 will be referred to as " known technology 1 ".

As shown in the figure, the prior art white smoke reducing closed countercurrent cooling tower 1h has a side casing 2a and a lower casing 2b which form a heat exchange zone, an air supply zone 5 and an exhaust zone 6, ); An exhaust opening formed at the center of the upper casing 2b; A heat transfer portion 70a 'formed of a plurality of flat heat transfer fins 79a and a straight heat transfer pipe 71a disposed at the heat exchange area for cooling heat exchange with the high temperature fluid, A cooling high temperature fluid inlet header 21 'having a cooling high temperature fluid inlet 22' to which a fluid outlet pipe 132b is connected and a cooling fluid outlet header 25 having a cooling fluid outlet 26, A heat exchange section 20d; A water spraying portion 30a having a water spray nozzle 34 sprinkling cooling water flowing through the water spray pump 100 and the cooling water supply pipe 102 into the closed type heat exchange portion 20d; Exchanges heat between the high-temperature fluid inlet header (41) provided with the high-temperature fluid inlet (42) and the high-temperature fluid inlet header (41) provided with the high-temperature fluid inlet A dry heat exchange section (40) having a cooling high temperature fluid outlet header (45) having a fluid outlet (46); A blowing fan including a fan cylinder for discharging the exhaust gas to the outside through the exhaust opening and introducing the air supply through the air supply mechanism 4 formed in the side casing 2a and performing the heat exchange and accommodating the blowing fan and the blowing fan, A blowing fan portion (10a) having a fan motor for driving the blowing fan; A water collecting tank 18 disposed below the hermetically sealed heat exchanging unit 20d and having a cooling water outlet 101 in one area; A high-temperature fluid supply line (130) for supplying a high-temperature fluid introduced from a cooling load section through a high-temperature fluid pump to the dry heat exchange section (40); A cooling high temperature fluid supply pipe path (132a) for supplying a cooling high temperature fluid from the dry heat exchange unit (40) to the closed type heat exchange unit; A cooling water supply conduit 102 connected between a cooling water inlet of the water spraying unit 30a and a cooling water outlet 101 of the water collecting tank 19; And a water spray pump (100) provided in the cooling water supply pipe (102).

Hereinafter, the operation according to the configuration of the well-known technique 1 will be briefly described.

The hot fluid flowing from the cooling load section through the high temperature fluid supply pipe line 130 flows through the dry heat exchange section 40 while exchanging heat with the exhaust of the saturated moisture vaporizer 1 The exhaust gas is heated and discharged to the outside through the exhaust opening after the humidity is lowered to reduce the white smoke and the cooling high temperature fluid cooled in correspondence with the heat exchange heat quantity transferred to the exhaust heat is passed through the cooling high temperature fluid supply pipe 132b Exchanging portion 20d while cooling the cooling fluid, and the cooled cooling fluid is supplied to the cooling load portion.

On the other hand, the cooling water stored in the water collecting tank 18 is supplied to the water spraying portion 30a through the cooling water supply pipe path 102 and the water spray pump 100 and the cooling water sprayed from the water spraying portion 30a to the hermetically sealed heat exchanging portion 20d. The cooling water that has flowed in through the air supply mechanism 4 to make contact with the flowing air and undergoes heat exchange and is heat-exchanged is recirculated through the water collecting tank 18, the cooling water supply pipe path 102 and the water spray pump 100.

This process is repeated as long as the cooling tower is operating.

24 is a schematic diagram of an outdoor air-conditioning and air-conditioning system using a conventional closed-type countercurrent cooling tower.

Hereinafter, the outdoor air-conditioning and air-conditioning system using the conventional closed type countercurrent cooling tower shown in Fig. 24 will be referred to as " known technology 2 ".

As shown in the figure, an outside air cooling and air conditioning system 300a 'using a conventional closed countercurrent cooling tower 1g includes a side casing 2a that forms a heat exchange area, an air supply area and an exhaust area, (2b); An enclosed heat exchange unit (20a ') disposed in the heat exchange area for cooling heat exchange the high temperature fluid; An open type heat exchanging portion 20f disposed above the hermetically sealed heat exchanging portion 20a '; A water spraying unit 30a for spraying high temperature cooling water flowing through the high temperature fluid supply pipe 130 'to the hermetically sealed heat exchanging unit 20a'; The exhaust gas is introduced into the side casing 2a through the air supply mechanism and then the heat exchanged air is exhausted to the outside through the exhaust port formed at the center of the upper casing 2b. A blowing fan portion 10a having a cylinder and a fan motor for driving the blowing fan; A closed countercurrent cooling tower 1g having a water collecting tank 18 disposed at a lower portion of the closed type heat exchanging unit 20a 'and having a cooling water outlet in one area is provided.

And a refrigerator (310) having a condenser (311), an expansion valve (312), an evaporator (313) and a compressor (314); A cooling device 320 'comprising an air conditioner having a cooling heat exchanger; A controller 200 'for controlling the closed type countercurrent cooling tower 1g, the freezer 310 and the cooling device 320'; A cooling water supply pipe 140 'connected between a cooling water outlet of the water collecting tank 18 and a cooling water inlet of the condenser 311, a cooling water pump 340' provided in the cooling water supply pipe 140 ' An opening / closing control valve 335 for opening / closing the cooling water supply; A high temperature cooling water supply line (130 ') connected between the high temperature cooling water inlet of the water spraying unit (30a) and the high temperature cooling water outlet of the condenser (311); A cooling water supply pipe line 102 'connected between the cooling water supply pipe line 140' and the high-temperature cooling water supply pipe line 130 'to bypass the high-temperature cooling water to the water spraying unit 30a, An open / close control valve 336 for opening / closing the high temperature cooling water supply to the water spraying unit 30a, a cold water supply pipe connected between the cold water outlet of the evaporator 313 and the cooling water outlet of the cooling heat exchanger 320 ' A cold water return line 322a 'connected between the cold water return inlet of the evaporator 313 and the cold water return outlet of the cooling unit 320', and a cold water return line 322a ' An open / close control valve 337 for opening and closing the cold water return supply to the evaporator 313 and a cold water pump 330 'between the cooling fluid outlet of the closed type heat exchanger 20a' and the cold water supply pipe 321a ' A cooling fluid supply line 140 connected to the hermetically sealed heat exchange unit 20a ' A high-temperature fluid supply line 130 connected between the body inlet and the cold water return line 322a ', an open / close valve provided in the high-temperature fluid supply line 130 to open / close the high- And an outside air cooling and air conditioning system 300a 'having a control valve 338 is provided.

Hereinafter, the operation according to the configuration of the well-known art 2 will be briefly described.

The outdoor unit cooling / air-conditioning system 300a 'using the enclosed countercurrent cooling tower 1g of the known art 2 is configured such that when the outdoor temperature is higher than the threshold value, the control unit 200' opens the opening / closing control valves 335 and 337 Closing control valves 336 and 338 are closed and the refrigerator 310 is controlled to operate. By closing the opening / closing control valves 336 and 338, the cooling water supply path 140 'and the high temperature cooling water supply path 130' are selected. That is, the water collecting tank 18 and the water spraying portion 30a communicate with each other to circulate the cooling water, and the cooling water is cooled through the cold water supply pipe 321a ', the cold water return pipe 322a' and the cold water pump 330 ' The cooling heat exchanger of the device 320 'and the evaporator 313 are communicated to circulate cold water.

Cooling Unit 320 'The cooling source is a refrigerator 310, and the cooling tower 1g is used as means for cooling the refrigerant of the refrigerator 310. In the operation of the refrigerator 310, the cooling tower 1g serves as an open cooling tower. That is, the cooling water sprinkled in the open type heat exchanging portion 20f of the cooling tower 1g is cooled by evaporation heat exchange by contact with the outside air. The cooled cooling water is supplied to the condenser 311 of the freezer freezer 310 to condense the refrigerant.

The refrigerant evaporates in the evaporator 313 of the freezer 310 to cool the cold water and supply the cold water to the cooling device 320 '. Thus cooling the air in the cooling device 320 '.

The control unit 200 'controls the opening / closing control valves 336 and 338 to open and the opening / closing control valves 335 and 337 to close when the outdoor temperature is lower than the threshold value. By closing the opening / closing control valves 335 and 337, the hot fluid supply line 130 and the cooling fluid supply line 140 are selected.

That is, the water collecting tank 18 communicates with the water spraying portion 35a to circulate the cooling water, and the cooling device 320 'and the closed type heat exchanging portion 20d communicate with each other to circulate the cold water.

The cooling device 320 'is a cooling tower 1g, and an outside air cooling operation is performed in which the refrigerator 310 is not operated.

In this outdoor air cooling operation, the cooling tower 1g serves as a closed cooling tower.

In other words, the cooling water that comes into contact with the air at the surface of the closed type heat exchange section 20d cools the high temperature fluid flowing in the heat transfer tube by evaporative cooling.

Thus, the cooled cold water may be supplied to the cooling device 320 'to cool the air flowing in the cooling device 320'.

Next, according to the structure and operation of the known art 2, the known technology 2 serves as an open type cooling tower during the operation of the refrigerator, while it functions as a closed type cooling tower during the outside air cooling operation. Therefore, cold water, which is not exposed to the outside air, It is always supplied to prevent contamination of the air conditioning load, and at the same time, the cooling efficiency can be increased and the energy saving can be achieved. The effect is presented.

However, the above-described conventional techniques have the following problems.

The white smoke reduction closed type countercurrent cooling tower 1h as in the known technology 1,

The high-temperature fluid is used for the white smoke reducing operation (operation) in both of the wet cooling operation of the closed type heat exchange section 20d and the dry cooling operation of the closed type heat exchange section 20d in which the white smoke reduction operation is not necessary, There is a problem that unnecessary high temperature fluid flow resistance is generated because the fluid always flows to the dry heat exchanging part 40 which is a heat exchanger and the consumption power of the high temperature fluid pump can be wasted.

Since the exhaust gas always flows to the dry heat exchange unit 40 at any time during the wet cooling operation and the dry cooling operation of the closed type heat exchange unit 20d at the ambient temperature where the white smoke reduction operation is unnecessary, unnecessary flow resistance of the exhaust gas is generated, And the like.

 Even when the cooling temperature of the high-temperature fluid is satisfied only by the dry cooling heat exchange of the dry heat exchanging part (40) and cooling through the closed type heat exchanging part (20d) is not necessary, the cooling fluid always flows to the close heat exchanging part There is a problem that unnecessary flow resistance is generated due to this, and the consumption power of the high temperature fluid pump can be wasted.

In the wet cooling operation of the closed type heat exchange unit 20d at the outside air temperature at which the white smoke reduction operation is not required, the high-temperature exhaust amount of the saturated moisture vaporizer that has undergone heat exchange through the closed type heat exchange unit 20d is supplied to the dry heat exchange unit 40 So that the flow resistance of unnecessary exhaust through the dry heat exchanging unit 40 is caused to waste power consumption of the blowing fan.

Next, an outdoor air cooling / air-conditioning system 300a 'using an enclosed countercurrent cooling tower 1g such as the well-known art 2 is provided with an open type heat exchanger (a condenser cooling / And the closed type heat exchanging unit 20d serving as a closed cooling tower (cold water producing) in the outdoor air cooling operation are respectively constituted so as to correspond to the constitution size of the closed type heat exchanging unit 20d with respect to the open type cooling tower of the same capacity, There is a problem that the installation area and the initial investment cost are greatly increased accordingly.

When the cooling water is cooled through the open type heat exchanging unit 20f in the condenser cooling mode, the closed type heat exchanging unit 20d is brought into contact with the cooling water that can be sprinkled in a closed state without any cooling action, , The inefficient and unnecessary air flow resistance is caused in the operation of the cooling tower, and the consumption power of the blowing fan is wasted.

Also, during the operation of the refrigerator 310, cold water is circulated between the cooling device 320 'and the evaporator 313 located at a relatively close distance and the cold water flow resistance of the lower cold water pump 330' During the outside air cooling operation, cold water is circulated between the cooling device 320 'located at a relatively long distance and the cold water circulation pipe of the cooling tower installed on the top of the normal building and the closed type heat exchanging part 20a' The cold water flow resistance of the high cold water pump 330 '(which can be increased to about twice that of the refrigerator operation) is generated, and the head of the design cold water pump 330' Since the flow resistance is applied, the refrigerator is operated at an unnecessarily high head when the refrigerator is operated, which causes a problem that the consumption power of the cold water pump 330 'is wasted.

And the white smoke generated during the wet cooling at the low temperature outside temperature is exposed as it is.

In addition, it is limited to the wet cooling operation structure, and it is impossible to implement the cooling stabilization effect that can actively cope with load fluctuation and the cooling energy (electricity and water) obtained in the wet-dry cooling and dry cooling operation structure according to the outside- There is a problem.

Since the cold water is produced only in the cooling capacity of the hermetically sealed heat exchanger 20d during the outdoor air cooling operation, the parallel operation frequency of the refrigerator and the operation period of the refrigerator are increased (shortening the outdoor air cooling operation period) There is a problem that the economical efficiency of the outside air cooling system is deteriorated.

Patent Document 1: JP-A-06-323761 (November 25, 1994) / Drawing 2 Patent Document 2: JP-A-2010-085010 (Apr. 15, 2010) / Drawing 1

Disclosure of Invention Technical Problem [8] The present invention has been made to solve the above-described problems of the prior art,

It is an object of the present invention to efficiently perform the switching operation of wet cooling, white smoke reducing wet-dry cooling, wet-dry cooling and dry cooling according to the outside temperature and the load fluctuation, It is possible to actively cope with the increase of the temperature of the cooling heat exchanging area and to further improve the efficiency of reducing the white smoke and to reduce the consumption power of the air blowing fan by circulating the exhaust passing through the white smoke reducing dry heat exchanger to the exhaust air during the wet cooling operation Temperature fluid that flows through the dry heat exchanger during the wet cooling operation and flows to the closed heat exchanger to reduce the power consumption of the high temperature fluid pump, and the cooling fluid cooled by the dry heat exchanger during the dry cooling operation To the cooling load section, thereby reducing the power consumption of the high-temperature fluid pump, and it is possible to reduce the power consumption of the heat exchange system and the channel It is possible to efficiently produce cold water by using low-temperature outside air as a cooling medium in place of the freezer in the winter season and the middle season (early spring or late autumn) where the outside temperature is low, Cooling fluid can be easily supplied to the condenser when producing chilled water of the chiller and cooling device when producing chilled water of the cooling tower. It is possible to maximize the production period of the cold water for outdoor cooling, The present invention provides an airtight cooling type countercurrent cooling tower capable of efficiently controlling switching operation of cooling and cooling cooling and bypassing flow of cooling fluid, and saving operation and maintenance cost, and an outdoor air cooling system using the same.

According to the present invention, the above and other objects can be accomplished by the provision of a side casing 2a and an upper casing 2b which form a heat exchange zone, an air supply zone 5 and an exhaust zone 6; An exhaust opening formed at either the center of the upper casing 2b or the upper end of the side casing 2a; Exchanged with the high temperature fluid introduced from the cooling load section 300 through the high temperature fluid supply conduits 130 and 131a and the high temperature fluid pump 340 to the cooling fluid supply conduit 140 To the cooling load section (300) through the heat exchanger (300); A water spraying unit 30a for spraying the cooling water supplied through the water spray pump 100 and the cooling water supply pipe 102 to the closed type heat exchange unit; Blowing fan portions (10a, 10b) for introducing the air supply through the air supply mechanism (4) formed in the side casing (2a) and discharging heat-exchanged exhaust through the exhaust opening to the outside; And a water collecting tank (19) disposed at a lower portion of the closed type heat exchanger and having a cooling water outlet (101) in one area,

Wherein the closed type heat exchanger performs cooling heat exchange with either wet cooling or dry cooling;

A first dry heat exchanger, and a second dry heat exchanger, which are disposed in the exhaust area 6 so as to reduce dry cooling and white smoke, and are arranged stepwise at a predetermined height so as to form an exhaust bypass flow path 7 from a lower surface of the first dry heat exchanger A second dry heat exchanger;

A bypass exhaust opening / closing unit provided between the first dry heat exchange unit and the second dry heat exchange unit facing the exhaust bypass flow passage and opening / closing the exhaust flowing in the bypass flow passage;

Temperature fluid supply line 131a for supplying a high-temperature fluid to the hermetically closed heat exchanging unit. During the wet cooling operation, the high-temperature fluid is opened to be supplied to the hermetically closed heat exchanging unit. When the wet cooling operation is stopped A high temperature fluid opening / closing control valve 111 for closing (OFF) the supply of high temperature fluid;

And at least one of the first dry heat exchanging operation and the second dry heat exchanging operation is performed in at least one of the at least one of the following processes: (ON) so that the cooling high temperature fluid flowing out from the second dry heat exchanging part is supplied to the closed type heat exchanging part, and the cooling high temperature fluid opening and closing control A valve 112;

And a control unit (200) for controlling at least one of a wet cooling operation, a white smoke reducing humidity-dry cooling operation, a wet-dry cooling operation and a dry cooling operation according to a control signal Lt; / RTI >

The air supply mechanism 4 may further include a louver 8 for smoothly guiding the air supply to the air supply area 5 and preventing the cooling water from leaking out.

The upper part of the water spraying part 30a may further include an eliminator 29 for collecting water droplets scattered toward the exhaust opening.

Further, an open type heat exchanging unit 20f may be further provided between the closed type heat exchanging unit and the water spraying unit 30a for dispersing and cooling the cooling water sprinkled by the closed type heat exchanging unit.

The water spraying portion 30a is provided with a cooling water distribution main pipe 32 in which the cooling water inlet 31 is formed and a cooling water distribution pipe 33 branched from the cooling water distribution main pipe 32 and connected to the spray nozzle 34 Can be configured.

The first dry heat exchanger and the second dry heat exchanger are provided at the upper side with a rise in outside air temperature higher than the designed outside air temperature to cause a decrease in the dry cooling capacity or a cooling failure due to cooling over load of the cooling load unit 300 And a second dry heat exchanging section for exchanging the first dry heat exchanging section and the second dry heat exchanging section for wet cooling operation, wherein cooling water is sprinkled by the first dry heat exchanging section and the second dry heat exchanging section, A plurality of cooling water distribution pipes 33 branching from the cooling water distribution main pipe 32 and a water spraying unit 30b having a plurality of water spray nozzles 34 provided in the cooling water distribution pipe 33 .

The upper part of the water spraying part 30b may further include an eliminator 29 'for collecting droplets of water scattered through the water spraying part 30b.

The supply of the cooling water to the water spraying portion 30b is performed by supplying cooling water to the cooling water conveying line 102 for supplying the cooling water to the water spraying portion 3a of the closed type heat exchanging portion, And a cooling water supply pipe line 102 is provided between the flow control valve 115 and the water spraying unit 30b so that the water spraying unit 30a and the water spraying unit 30b, and an additional water spray pump 100 'for supplying cooling water to the water spray unit 30b may be provided.

The cooling water outlet 101 and the water collecting tank 18 may further include a sump for collecting and discharging cooling water. The water collecting tank 18 may include a sump, A replenishing water supply unit, a drainage unit, and a filtration unit.

The closed type heat exchanger may include a cooling-high-temperature fluid, which is cooled by the first dry heat exchanger and the second dry heat exchanger, or a high-temperature fluid supplied from the cooler 300, A high temperature fluid inlet header 21 having a cooling-high temperature fluid inlet 22 to which a supply pipe path 133c is connected and to which one end of the heat transfer tube is connected, a cooling fluid outlet 26) and a cooling fluid outlet header (24) to which the other end of the heat transfer tube is connected,

A heat transfer portion 70a including a serpentine type heat transfer tube 71a in which a straight tube portion and a curved tube portion are continuously formed by a circular tube, an elliptical or oval tube, or a flat tube, An enclosed heat exchanging unit 20a having a heat exchanger 20a,

A flat plate type heat transfer tube 71b for dividing the inner space by a plurality of flow path partition walls 73 to form the multiple flow paths 72 and a flat plate portion 78a along the longitudinal direction of the heat transfer tube 71b, The heat transfer pipe 71b is formed so as to be recessed in the center of the heat transfer pipe 71b in any one of the flat plate portions 78a and the flow of cooling water flowing on the surface of the flat plate portion 78a of the heat transfer pipe 71b is changed in and out, An inwardly directed portion 76a and an outwardly directed portion 76b that form a guide sloped surface at a predetermined angle to improve the heat exchange efficiency by increasing the heat exchange area and the heat exchange property, A closed type heat exchange unit 20b having a heat transfer unit 70c composed of a flow switching unit 75 composed of a heat exchanger

A heat transfer pipe 71b which forms one flow path 72 and a heat transfer pipe 71b which is provided on either one of the flat plate portions 78a or both flat plate portions 78a along the longitudinal direction of the heat transfer pipe 71b, A flow switching portion 75 formed of an inwardly directed portion 76a and an outwardly directed portion 76b which are formed to be recessed in a direction of a predetermined angle and form a guide sloped surface at a predetermined angle and formed on the outer surface of the flat plate portion 78a of the heat transfer pipe 71b A hermetically sealed heat exchanging part 20c having a heat transfer part 70e made of a serpentine type heat transfer fin which has a flat part and a curved part continuously formed with a predetermined height and width, ). ≪ / RTI >

The closed type heat exchanging part 20a may be divided into at least two, but may be divided into one or a plurality depending on the size of the cooling tower. The closed type heat exchanging parts 20b and 20c may include a plurality of And a unit heat exchanger may be stacked.

The heat transfer pipe (71b) is formed at one end of the flow path (72) so as to extend outwardly in a triangular shape integrally with the flow path (72) to increase the contact surface between the heat exchange medium (cooling water and air) And a flow guide portion 77 for reducing the flow resistance.

The first dry heat exchanging part and the second dry heat exchanging part are provided with a high temperature fluid inlet port 42 to which the high temperature fluid supply pipe path 131c for supplying a high temperature fluid is connected and a high temperature fluid inlet header Temperature fluid outflow header (46) to which the cooling high-temperature fluid outflow conduit (132b) is connected, and the other end of the heat transfer conduit is connected to the cooling high-temperature fluid outflow header (45)

A first dry heat exchanging portion 40a and a second dry heat exchanging portion 50a having a plurality of flat heat transfer fins 79a and a heat transfer portion 70b composed of a heat transfer pipe 71a which is either a circular pipe, ),

Having a heat transfer portion 70d made up of a flat plate-type heat transfer tube 71b for forming multiple flow paths 72 by a plurality of flow path partitioning walls 73 and a plurality of flow path partitioning walls 73, The heat exchanging part 40b, the second dry heat exchanging part 50b,

A first dry heat exchanging part 40c and a second dry heat exchanging part 40c having a heat transfer part 70f composed of a serpentine heat transfer fins 79b formed by bending a flat part and a bent part and a flat heat transfer pipe 71b forming a single flow path 72, And the dry heat exchanging unit 50c.

Any one of the first dry heat exchanging units 40a, 40b and 40c or the second dry heat exchanging units 50a, 50b and 50c may be provided in the second dry heat exchanging units 50a, 50b and 50c or the first dry heat exchanging units 50a, A heat exchange area expanding section 49 for expanding the heat exchange area so as to overlap one of the dry heat exchanging sections 40a, 40b and 40c in either one direction or both sides to reduce the heat exchange capability and the exhaust flow resistance .

It is preferable that the expansion area of the heat exchange area expanding part 49 is extended within 30% of the width of the exhaust bypass flow path 7 in order to minimize the deflection of the exhaust flow caused by the interference of the exhaust flow space with the expansion Do.

The lower width of the exhaust bypass flow channel 7 preferably corresponds to the upper surface width of the lower dry heat exchanger (50a, 50b, 50c).

The first dry heat exchanging units 40a, 40b, and 40c and the second dry heat exchanging units 50a, 50b, and 50c are simple and easy to configure, but are divided into a plurality of Structure.

The bypass exhaust opening / closing portion for opening / closing the exhaust flowing into the exhaust bypass flow channel 7 includes an exhaust opening / closing member 81a constituted by a damper having a plurality of opening / closing blades, and an exhaust opening / closing member 81a A rotary shaft, and an opening / closing member driver 82a for driving the rotary shaft, a bypass exhaust opening / closing unit 80a,

An exhaust opening / closing member 81b constituted by a rolling shutter further reducing the flow resistance of the exhaust, and a bypass exhaust opening / closing unit 80b constituted by an opening / closing motive member 82b for opening / closing the exhaust opening / closing member 81b, or

An exhaust opening / closing member 81c having one opening / closing plate for reducing the flow resistance of exhaust, a rotation shaft for opening and closing the exhaust opening / closing member 81c by rotating the opening / closing member 81c, and an opening / closing member driver 82a for driving the rotation shaft Opening and closing part 80c, but it is also possible to constitute a detour exhaust opening / closing part of another structure.

The first and second dry heat exchanging units (50a, 50b, 50c) are disposed in the openings formed in the side casing (2a) to expand the dry cooling heat exchange area and heat the incoming air to heat- The air is mixed with the exhaust flowing into the exhaust bypassing flow channel (7), and the humidity of mixing and exhausting is reduced to further improve the white smoke reducing efficiency,

 A high temperature fluid inlet header 41 having an outside air dry heat exchange chamber 64 opened on both sides and a high temperature fluid inlet port 42 to which the high temperature fluid supply tube path 131c is connected and to which one end of the heat transfer tube is connected, A cooling high temperature fluid outlet port 46 to which the fluid outlet pipe 132b is connected and a cooling high temperature fluid outlet header 45 to which the other end of the heat transfer pipe is connected,

An outer air dry heat exchange unit (70) accommodated in the outside air dry heat exchange chamber (64) and having a plurality of flat heat transfer fins (79a) and a heat transfer portion (70b) composed of a heat transfer pipe (71a) (60a),

A flat plate type heat transfer tube 71b which forms a multiple flow path 72 by a plurality of flow path partition walls 73 and a plurality of fan heat transfer fins 79b accommodated in the outside air dry heat exchange chamber 64 and bent in a flat portion and a curved portion, An outside air dry heat exchanging part 60b having a heat transfer part 70d made of

A heat transfer portion 70f composed of a tabular heat transfer fin 79b which is accommodated in the outside air dry heat exchange chamber 64 and is bent into a flat portion and a bent portion and a plate heat transfer pipe 71b which forms one flow path 72 And an outside-air dry heat exchanging unit 60c having an open-air dry heat exchanging unit 60c.

The inner diameter iw of the flat plate-type heat transfer pipe 71b may be between 10 mm and 40 mm. However, the inner diameter of the plate-like heat transfer pipe 71b may be smaller than that of the circular tube of the same flow rate. The heat transfer distance td between the center of the fluid and the inner wall of the plate-like heat transfer tube 71b is shortened to improve the heat exchange property and to accommodate a larger fluid flow amount, May be formed to be smaller or larger.

The inner height ih in the vertical section or the inner length il in the horizontal section of the plate-like heat transfer tubes 71b is within 3 to 6 times the inner width iw of the plate-type heat transfer tubes 71b .

The heat transfer pipe 71a connected to the straight pipe portion and the bending pipe portion is preferably a single serpentine or double serpentine structure and is preferably formed in a range of 2 to 8 rows Do.

The heat transfer tubes 71a and 71b may be formed of a copper tube, an aluminum alloy tube, a stainless steel tube, or a hot-dip galvanized steel tube.

It is preferable that the flat heat conductive fins 79a are internally coated and applied to a common heat conductive fin mounted on a heat transfer tube applied to an air conditioner or a condenser to prevent corrosion in a high temperature cooling tower environment. And a heat transfer fin having a different shape and structure such as an aero fin of a corrosion-resistant material formed to be in close contact with the outer surface of the heat transfer pipe.

The cooling-high-temperature fluid inlet header 21 and the cooling fluid outlet header 24, the high-temperature fluid inlet header 41 and the cooling high-temperature fluid outlet header 45 may be any one of circular, rectangular, But it is also applicable to other cross-sectional shapes.

In the cooling-high-temperature fluid inlet header 21 and the cooling fluid outlet header 24, the high-temperature fluid inlet header 41 and the cooling high-temperature fluid outlet header 45, a fluid flowing in the straight- (28, 48) partitioning the flow path of the fluid flowing in and flowing out through the heat transfer tube so as to pass through the heat transfer pipe (or vertical direction) The outer shape of the header can correspond to the inner cross-sectional shape of the header.

In addition, any one of the outside or inside of the outside-air dry heat exchange chamber 64 opens / closes the flow of the incoming outside air,

An outside air opening and closing member 90a composed of an outside air opening and closing member 91a constituted by a damper having a plurality of opening and closing blades, a rotating shaft for opening and closing the outside air opening and closing member 91a by opening and closing and an opening and closing member driver 92a for driving the rotating shaft, or

And an outside air opening and closing unit 90b constituted by an outside air opening and closing member 91b constituted by a rolling shutter and an opening and closing member driver 92b for opening and closing the outside air opening and closing member 91b .

The blowing fan unit includes a fan cylinder 11a formed at an upper portion of an exhaust opening formed at the center of the upper casing 2b, an axial flow blowing fan 12a accommodated in the fan cylinder 11a, (10a) having a motor (15) for driving a blowing fan (12a) or a blowing fan

A discharge port 13 is disposed in the partition 3 for partitioning the air supply fan space and the air supply area 5 to the inside of the air supply mechanism 4 and the fan housing 11b and the fan housing 11b And a pressurized blowing-type blowing fan portion 10b having a centrifugal blowing fan 12b to be disposed and a motor 15 for driving the blowing fan 12b.

The fan cylinder 11a is preferably an exposed fan cylinder 62 that is exposed to the upper side of the exhaust opening. However, the fan cylinder 11a is installed to be buried inside the exhaust opening to shorten the mounting height of the cooling tower and improve the appearance A flush type fan cylinder, and a flush type fan type fan unit.

Also, the driving unit of the blowing fan is preferably a belt drive type, but it can also be applied to a gear reducer drive type or a direct drive type.

The supply control of the high temperature fluid and the cooling high temperature fluid to the hermetically sealed heat exchangers 20a, 20b and 20c is controlled by the opening / closing control valve 141 having the two-way valve for opening and closing the supply of the high temperature fluid, (Fluid inlet side valve), B (fluid outlet side valve), C (fluid outlet side valve) and C (fluid outlet side valve) are shown by way of example with the opening / closing control valve 142 having a two- (20a, 20b, 20c) is provided with either one of a high-temperature fluid or a cooling high-temperature fluid, which has a three-way valve (3-way) It is also possible to control opening and closing.

The high temperature fluid flowing out from the first dry heat exchanging part and the second dry heat exchanging part is introduced into the space between the cooling high temperature fluid discharge line 133a and the cooling fluid supply line 140 for supplying the cooling fluid to the cooling load part 300, (Or cold water) when the cooling fluid is satisfied with the set cooling fluid (or cold water) temperature, while blocking the fluid flowing to the closed type heat exchangers 20a, 20b, and 20c to prevent unnecessary fluid flow resistance, A cooling fluid bypass flow path 137 for bypassing the cooling fluid to the cooling fluid supply pipe path 140 and an opening and closing control valve 113 for controlling the bypass flow of the cooling fluid, .

The first dry heat exchanging unit 40a, the second dry heat exchanging unit 40b, and the second dry heat exchanging unit 50a are connected to the hermetically sealed heat exchanging units 20a, 20b, and 20c, And a high temperature fluid supply line 131b for supplying a high temperature fluid to the outside air dry heat exchanging units 60a, 60b and 60c is connected to a high temperature fluid supply line 130 for supplying a high temperature fluid from the cooling load unit 300 It is preferable to separately supply the high-temperature fluid.

The first dry heat exchanging parts 40a, 40b and 40c and the second dry heat exchanging parts 50a and 50b and 50c and the outside air dry heat exchanging parts 60a, It is possible to actively cope with the cooling load required for the variation of the cooling load and the outside air temperature.

And means for inputting a control signal for controlling to select one of a wet cooling operation, a white smoke reducing humidity-dry cooling operation, a wet-dry cooling operation and a dry cooling operation, A cooling fluid temperature detector 221 for detecting the temperature of the fluid and outputting a detection signal, a cooling high temperature fluid temperature detector 221 for detecting the temperature of the cooling high temperature fluid flowing through the cooling high temperature fluid supply pipe path 133a, An outside air temperature detector 123 for detecting the temperature of the outside air and outputting a detection signal, and an outside air humidity detector 124 for detecting the humidity of the outside air and outputting a detection signal.

In addition, the temperature detectors 121, 122, and 123 and the humidity detector 124 may be provided in a plurality of measurement units in order to optimize the control.

The control unit 200 controls the fan motor 15 switch and the operation mode control operation unit 300 according to the ON and OFF control signals of the high temperature fluid pump 340 that operates the high temperature fluid pump 340. [ An interlocking controller 210 interlocked with the interlocking controller 221,

The outside air opening / closing portions 90a and 90b / closing (OFF), the bypass exhaust opening / closing portions 80a, 80b and 80c / opening (ON) according to the set wet cooling operation detection temperature t1 / ON signal of the cooling fluid temperature detector 221, , High-temperature fluid supply open / close control valve (111) / open, cooling high temperature fluid supply open / close control valve (112) / close (OFF), sprinkler pump (100) A wet cooling operation mode 222 for controlling the cooling operation mode,

The outdoor air opening / closing portions 90a, 90b / open () are opened in accordance with the detected white smoke reduction operation temperature t3 / ON of the outdoor air temperature detector 123 and the set smoke white smoke detection operation humidity h1 / ON signal of the outdoor air humidity detector 124 OFF control valve 112 is opened / closed, the high-temperature fluid supply opening / closing control valve 111 is closed / closed (OFF), and the high temperature fluid supply opening / (223) which controls the white smoke reduction operation by wet-dry cooling,

90b / open (ON), detour exhaust opening / closing portions 80a, 80b, 80c / closed (OFF) according to the humidity-dry cooling operation detection temperature t2 / ON signal of the outdoor temperature detector 123 ), Cooling High temperature fluid supply open / close control valve (112) / Open (ON), High temperature fluid supply open / close control valve (111) Mode 224,

The water spray pump 100 / stop (OFF), the outside air open / close portions 90a and 90b / open (ON) and the bypass exhaust open / close portion 80a (OFF) according to the detected dry cooling operation detection temperature t4 / ON signal of the outside air temperature detector 123 , 80b, 80c / OFF, cooling High temperature fluid supply open / close control valve 112 / ON, high temperature fluid supply open / close control valve 111 / An operation mode control unit 220 having a dry cooling operation mode 225 for controlling the operation mode,

The cooling water circulation flow opening / closing control valve 113 / opening (ON) is controlled according to the cooling fluid bypass flow detection temperature (t5 / ON) signal of the cooling high temperature fluid temperature detector 122, A high temperature fluid supply opening / closing control valve 111 / closing (OFF), a high temperature fluid supply opening / closing control valve 112 being closed (OFF) so as to circulate cooling fluid to the cooling load section 300 And a flow control unit 230.

Although it has been described above that the humidity-and-dry cooling operation mode 224 and the dry cooling operation mode 225 are controlled in accordance with the set temperature detection signal of the outdoor air temperature detector 123, It may be controlled according to a temperature detection signal.

The control unit 200 includes a control value setting unit 201 for setting a control value, a display unit 202 for indicating a control state, a control signal input unit 203 for inputting detection and contact signals, An alarm unit 205 for alarming an abnormal operation and a failure, a remote control signal input / output unit 206 for remotely controlling through wired and wireless communication networks, an external storage for storing control data externally Part 207 and a power supply part 208 for supplying control power.

The cooling load unit 300 may include an air handling unit for cooling and exchanging air in the room, a thermohygrostat, a fan coil unit, an Internet data center (IDC) cooling unit (A pump, a control unit, a fluid duct, a control valve, etc.) of at least one of a water cooled cooler, a convection heat sink, a cooler of a low temperature warehouse, .

Next, in the cooling tower, the flue gas reduction dry heat exchanger having the heat transfer portion formed of the heat transfer fin and the heat transfer tube is an expensive component having a specific gravity ranging from 40 to 60% of the total cost of the cooling tower, The consumption power of the blowing fan and the initial investment cost can be increased because the number of rows of the heat exchanger increases (the size of the heat exchanger increases) and the flow resistance of the air increases within the heat exchange area.

Therefore, it is important to design the dry heat exchanger to minimize the economic burden, because economic constraints may be imposed on the enhancement of the white smoke reduction efficiency.

The heat exchanger can be applied in the range of 2 ~ 8row depending on the size of the heat exchanging area (air space and area).

In the present invention, as the means for improving the efficiency of the white smoke reducing operation and minimizing the economic burden, it is preferable that the first dry heat exchanging units (40a, 40b, 40c) 50 to 70 by the second dry heat exchanging parts 50a, 50b and 50c and 30 to 50 by the outside air dry heat exchanging parts 60a, 60b and 60c. The distribution condition is derived to distribute the heat exchange capacity and to select the size of each dry heat exchange unit.

In this case, the heat exchanger heat flow and the air flow resistance of the first dry heat exchange units 40a, 40b, 40c and the second dry heat exchange units 50a, 50b, 50c are reduced while the outside air dry heat exchange units 60a, 60b And 60c heats the outside air with low humidity and supplies the heated air with lower humidity, thereby further improving the white smoke reducing efficiency economically.

Next, the white smoke is generated only in the wet cooling operation mode 222 or the wet-dry cooling operation mode 224 in the low temperature ambient condition in which the white smoke is generated, and in the dry cooling operation mode 225 or the normal temperature The white smoke is not generated even if it is operated in the wet operation mode 222 or the wet-dry cooling operation mode 224,

The white smoke reducing operation mode 223 of the present invention is a mode in which the first dry heat exchanging units 40a, 40b, 40c and the second dry heat exchanging units 50a, 50b, 50c are operated under low- , The outside air dry heat exchanging units 60a, 60b, and 60c heat the exhaust of the saturated moisture vaporizer that has undergone the heat exchange by the wet cooling through the closed type heat exchange units 20a, 20b, and 20c using the heat of the flowing high temperature fluid, And low-humidity heated air generated by heating the low-humidity outdoor air to be mixed with the exhaust air of low humidity to reduce the white smoke. However, the cooling high-temperature fluid primarily cooled by the dry cooling may be discharged into the closed- Since the cooling process of supplying the cooling heat to the heat exchanging units 20a, 20b, 20c and performing the secondary cooling heat exchange through the wet cooling is in the wet-dry cooling operation mode, the white smoke reducing operation- At room temperature, Type configuration and humidity of the cooling operation mode (224) - Dry cooling operation is the same.

In the wet cooling operation mode 222 of the present invention, the first dry heat exchanging units 40a, 40b, 40c and the second dry heat exchanging units 50a, 50b, 50c, the outside air dry heat exchanging units 60a, 60b, 80b and 80c are closed and the outside air opening / closing portions 90a and 90b are closed (wetted) in a state that the outside air opening / closing portions 90a and 90b are closed (OFF) And subject to cooling heat exchange of the high temperature fluid flowing through the hermetically sealed heat exchanging sections (20a, 20b, 20c).

In the dry cooling operation mode 225, the water spray pump 100 is stopped and the first dry heat exchanging units 40a, 40b, 40c and the second dry heat exchanging units 50a, 50b, 50c, A dry cooling operation mode in which the cooling high temperature fluid primarily cooled through the dry heat exchangers 60a, 60b and 60c is secondarily cooled through the closed type heat exchangers 20a, 20b and 20c to produce a cooling fluid Or the cooling high temperature fluid primarily cooled through the first dry heat exchanging units 40a, 40b, 40c and the second dry heat exchanging units 50a, 50b, 50c and the outside air dry heat exchanging units 60a, 60b, And a partial dry cooling operation mode in which the cooling fluid is bypassed to the cooling load section 300 when the cooling fluid temperature is satisfied.

Next, the reduction amount of the exhaust flow resistance according to the configuration of the heat exchange zone extending portion 49, the exhaust bypass flow passage 7, the bypass exhaust opening / closing portions 80a, 80b, 80c, and the like is applied to the design of the cooling tower It is possible to provide a cooling tower having a blowing fan portion with a smaller power.

The first dry heat exchanging units 40a, 40b and 40c and the second dry heat exchanging units 50a, 50b and 50c and the outside air dry heat exchanging units 60a, 60b and 60c in the above- The power consumption of the high temperature fluid pump 340 corresponding to the reduced fluid flow resistance can be reduced as the opening / closing control valve 112 is closed (OFF) so that the high temperature fluid does not flow unnecessarily.

Here, if the flow resistance (head) is reduced at the rated head of the pump in a hydrodynamic manner, the flow rate and the consumption power can be increased corresponding to the reduction of the flow resistance, so that the variable flow rate operation of the pump is performed It is preferable to further include a variable voltage variable control (VVVF) inverter (VVVF Inverter) of a pump motor.

When exhausting from the closed type heat exchanging portions 20a, 20b and 20c to the exhaust opening toward the exhaust opening after completing the heat exchange, the first dry heat exchanging portions 40a, 40b and 40c and the second dry heat exchanging portions The exhaust passing through the exhaust passages 50a, 50b and 50c can be subjected to flow resistance to become resistance exhaust air and the bypass flow exhaust flowing into the open exhaust bypass flow passage 7, It can be nonresistance exhaust air.

Next, an object of the present invention is to provide a heat exchanger having a side casing 2a and an upper casing 2b which form a heat exchange zone, an air supply zone 5 and an exhaust zone 6; An exhaust opening formed at either the center of the upper casing 2b or the upper end of the side casing 2a; Exchanged with the high temperature fluid introduced from the cooling load section 300 through the high temperature fluid supply conduits 130 and 131a and the high temperature fluid pump 340 to the cooling fluid supply conduit 140 To the cooling load section (300) through the heat exchanger (300); A water spraying unit 30a for spraying the cooling water supplied through the water spray pump 100 and the cooling water supply pipe 102 to the closed type heat exchange unit; Blowing fan portions (10a, 10b) for introducing the air supply through the air supply mechanism (4) formed in the side casing (2a) and discharging heat-exchanged exhaust through the exhaust opening to the outside; And a water collecting tank (19) disposed at a lower portion of the closed type heat exchanger and having a cooling water outlet (101) in one area,

A first dry heat exchanger, and a second dry heat exchanger, which are disposed in the exhaust area 6 so as to reduce dry cooling and white smoke, and are arranged stepwise at a predetermined height so as to form an exhaust bypass flow path 7 from a lower surface of the first dry heat exchanger A second dry heat exchanger; A bypass exhaust opening / closing unit provided between the first dry heat exchange unit and the second dry heat exchange unit facing the exhaust bypass flow passage and opening / closing the exhaust flowing in the bypass flow passage; Temperature fluid supply line 131a for supplying a high-temperature fluid to the hermetically closed heat exchanging unit. During the wet cooling operation, the high-temperature fluid is opened to be supplied to the hermetically closed heat exchanging unit. When the wet cooling operation is stopped A high temperature fluid opening / closing control valve (111) for closing (OFF) the supply of cooling high temperature fluid; And at least one of the first dry heat exchanging operation and the second dry heat exchanging operation is performed in at least one of the at least one of the following processes: (ON) so that the cooling high temperature fluid flowing out from the second dry heat exchanging part is supplied to the closed type heat exchanging part, and the cooling high temperature fluid opening and closing control A valve 112; And a control unit (200) for controlling at least one of a wet cooling operation, a white smoke reducing humidity-dry cooling operation, a wet-dry cooling operation and a dry cooling operation according to a control signal,

A condenser 311 to which the high temperature fluid supply line 130 and the cooling fluid supply line 140 are connected and an evaporator 313 to which the cold water supply line 321a and the cold water return line 322a are connected, A refrigerator (310) having any one of a refrigerator, a freezer, an absorption type refrigerator, and an absorption type cold and hot water generator, and a refrigerator control part (316) for controlling the refrigerator (310);

A bypass cooling fluid supply pipe path 321b connected between the cooling water supply pipe path 321a for supplying cold water to the cooling device 320 and the cooling fluid supply pipe path 140 and supplying the cooling fluid to the cooling device 320, A reverse osmosis (328) provided in the bypass cooling fluid supply line (321b) to block reverse flow of the cold water to the cooling fluid supply line (140) and the condenser (311);

An open / close control valve (325) provided in the cold water return line (322a) where a cold water pump (330) for supplying cold water return to the evaporator (313) is disposed and opens and closes the supply of cold water return;

  A cold water return pipe 322b connected between the cold water return pipe 322a and the hot fluid supply pipe 130 for bypassing cold water return to the cooling tower and a bypass cold water return pipe 322b An opening / closing control valve (326) for opening / closing the bypass flow of the cold water return water;

And an open / close control valve (327) provided in the high temperature fluid supply line (130) to block reverse flow of cold water from the high temperature fluid outflow port of the condenser (311).

Here, the object of the above-described white smoke reducing closed countercurrent cooling tower for producing cold water is similar to the above-mentioned description of the white smoke reducing closed countercurrent cooling tower, and the above description is replaced with a repetitive description thereof, An outside air cooling system using a cooling tower of a type and countercurrent flow will be described.

The cooling device 320 includes an air handling unit for cooling and heat-exchanging cooling air in a room, a thermohygrostat, a fan coil unit, an Internet data center (IDC) cooling unit, a water- It may be at least one of a water cooled cooler, a convective radiator, and a cooler of a low temperature warehouse, and may be applied to other cooling devices using cold water as a cooling medium.

The control unit 200 or the refrigerator control unit 316 is provided with an outdoor air cooling cold water operation detection temperature t6 / ON set by the cooling fluid temperature detector 315 and an ambient air cold water operation temperature set by the outdoor air temperature detector 123 The cold water pump 330 / stop (OFF), the high-temperature fluid opening / closing control valve 327 / the closing (OFF) A cold water cooling control unit for controlling the free cooling operation by controlling the cold water return bypass flow control valve 326 / opening and the cold water return control valve 325 / closing (OFF) 240 may be further included.

The control valve 325 has a two-way valve for opening and closing the supply of the cold water returning to the evaporator 313 and the supply of the cold water returning to the bypass cold water return water line 322b An on-off control valve 326 having a two-way valve for opening and closing is connected to a three-way valve 3 (fluid inlet side valve), B (fluid outlet side valve) and C -way to control the opening and closing of the cold water returning to the evaporator 313 and the bypass water recirculation advanced water line 322b.

The chiller 310, the opening / closing control valves 325, 326, and 327, the cold water pump 330, the temperature detector 315, and the refrigerant return valve 328 of the ambient air cooling system 300a, And the piping 130, 140, 321a, 321b, 322a, 322b and the high-temperature fluid pump 340 connected thereto are simplified in installation, operation and maintenance, and the indoor noise of the refrigerator and the pump is prevented A single unit may be provided with a mounting structure such as a platform or a frame on the lower or one side of the white smoke reducing closed type countercurrent cooling tower.

In the outdoor air cooling system according to the present invention, unlike the prior art, the cooling fluid is circulated to the condenser 311 in the cold water chiller operation with only one hot fluid pump 340, However, in the case of either the cold water chilled water operation or the outdoor cooling chilled water operation, the operation of the high-temperature fluid pump 340 is performed in such a manner that the operation head deviation of the high- So that wasteful consumption of power due to unnecessary operation of a high-lift pump such as the known technology 2 does not occur.

According to the present invention, it is possible to efficiently perform the switching operation of the wet cooling, the white smoke reducing wet-dry cooling, the wet-dry cooling and the dry cooling according to the outside temperature and the load fluctuation, The cooling heat exchanging region can be enlarged and the white smoke reducing efficiency can be further improved. In the wet cooling operation, the exhaust passing through the white smoke reducing dry heat exchanging portion is circulated to the exhaust port to reduce the power consumption of the blowing fan And the power consumption of the high-temperature fluid pump can be reduced by flowing the high-temperature fluid flowing through the dry heat exchanger during the wet cooling operation to the closed-type heat exchanger while reducing the power consumed by the dry heat exchanger It is possible to reduce the consumption power of the high-temperature fluid pump by circulating the fluid to the cooling load section, It is possible to efficiently produce cold water by using the low temperature outside air as a cooling medium instead of the freezer in the winter season or the middle season (early spring or late autumn) where the outdoor temperature is low, It is possible to easily supply the cooling fluid to the condenser when producing chilled water of the freezer by the high temperature fluid pump and to the cooling device by the cooling device when producing cold water of the cooling tower without wasting the power consumption of the pump, It is possible to efficiently control the flue gas desensitization-dry cooling, the wet-dry cooling, the switching operation of the dry cooling and the cooling fluid bypass operation, and the operation and maintenance cost can be saved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic cross-sectional side view showing a white smoke reducing closed countercurrent cooling tower and a wet cooling operation structure according to a first embodiment of the present invention;
FIG. 2 is a schematic longitudinal sectional view showing the white smoke reducing closed countercurrent cooling tower and the wet cooling operation structure of FIG. 1;
3 is a schematic side cross-sectional view showing the structure of the whitening-reduced wet-dry cooling operation and the wet-dry cooling operation of FIG. 1,
Fig. 4 is a schematic side cross-sectional view showing the dry cooling operation structure of Fig. 1,
FIG. 5 is a schematic side cross-sectional view showing the structure of the dry cooling and cooling fluid bypass operation of FIG. 1;
6 is a schematic diagram of an outside air cooling system using a white smoke reducing closed countercurrent cooling tower according to a first embodiment of the present invention,
FIG. 7 is a schematic block diagram of a control unit of the white smoke reducing closed type countercurrent cooling tower and the outdoor air cooling system according to the first embodiment of the present invention;
FIG. 8A and FIG. 8B are schematic views showing a schematic configuration and operation of a control unit of the white smoke reducing closed type countercurrent cooling tower and the outdoor air cooling system according to the first embodiment of the present invention,
9 is a schematic side cross-sectional view showing a white smoke reducing closed countercurrent cooling tower and a wet cooling operation structure according to a second embodiment of the present invention,
10 is a schematic side sectional view showing the white smoke reduction operation structure of FIG. 9,
Fig. 11 is a schematic vertical cross-sectional view of the heat transfer portion of Fig. 9,
FIG. 12 is a schematic side view of the hermetically sealed heat exchanging portion of FIG. 9;
13 is a schematic plan view of the configuration of the hermetically sealed /
FIG. 14 is a schematic plan view of the first dry heat exchanger and the second dry heat exchanger of FIG. 9,
Fig. 15 is a schematic perspective view of the heat transfer portion of Fig. 9,
16 is a schematic side cross-sectional view showing a white smoke reducing closed countercurrent cooling tower and a wet cooling operation structure according to a third embodiment of the present invention,
17 is a schematic plan view of the configuration of the hermetically sealed /
Fig. 18 is a schematic perspective view of the heat transfer portion of Fig. 16,
Fig. 19 is a schematic perspective view of another heat transfer portion of Fig. 16,
20 is a schematic side cross-sectional view showing a white smoke reducing closed countercurrent cooling tower and a wet cooling operation structure according to a fourth embodiment of the present invention,
FIG. 21 is a schematic vertical sectional view showing the white smoke reducing closed countercurrent cooling tower and the wet cooling operation structure of FIG. 20;
FIG. 22 is a schematic side cross-sectional view showing the white smoke reduction operation structure of FIG. 20,
23 is a schematic side cross-sectional view of a conventional white smoke reducing closed countercurrent cooling tower,
24 is a schematic diagram of an outdoor air-conditioning and air-conditioning system using a conventional closed-type countercurrent cooling tower.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather clear. The same components are denoted by the same reference numerals, and only representative embodiments will be described. In the other embodiments, only the configurations different from those of the first embodiment will be described.

1 is a schematic side cross-sectional view showing a white smoke reducing closed type countercurrent cooling tower and a wet cooling operation structure according to a first embodiment of the present invention, FIG. 2 is a cross sectional view showing the white smoke reducing closed countercurrent cooling tower and the wet cooling operation structure FIG. 3 is a schematic side cross-sectional view showing the structure of the whitewall reduction wet-dry cooling operation and the wet-dry cooling operation of FIG. 1, and FIG. 4 is a schematic cross- FIG. 5 is a schematic side cross-sectional view showing the structure of the dry cooling and cooling fluid bypass flow operation of FIG. 1, and FIG. 6 is a cross-sectional view of the outside air using the white smoke reducing closed countercurrent cooling tower according to the first embodiment of the present invention. 7 is a schematic block diagram of a control unit of the white smoke reducing closed type countercurrent cooling tower and the outdoor air cooling system according to the first embodiment of the present invention, and FIGS. 8A and 8B are schematic views FIG. 5 is a control diagram showing a schematic configuration and a system of operations of a control unit of the white smoke reducing closed type countercurrent cooling tower and the outdoor air cooling system according to the first embodiment of the present invention. As shown in these drawings, the white smoke reduction closed countercurrent cooling tower 1a of the first embodiment of the present invention and the outdoor air cooling water system 300a using the same,

A side casing 2a and an upper casing 2b which form a heat exchange zone, an air supply zone 5 and an exhaust zone 6; A supply mechanism 4 formed in the side casing 2a, a louver 8 provided in the supply mechanism 4, an exhaust opening formed in the center of the upper casing 2b, A heat transfer portion 70a which is disposed in the heat exchange region and is composed of a heat transfer tube 71a of a serpentine shape in which a straight tube portion and a curved tube portion are formed in a continuous fashion to cool and heat exchange the high temperature fluid by either wet cooling or dry cooling, A coolant-high temperature fluid inlet header 21 having a fluid inlet 22 connected to one end of the heat transfer tube 71a and a cooling fluid outlet 26 in one region and the other end of the heat transfer tube 71a An enclosed heat exchange section (20a) having a cooling fluid outlet header (24) connected thereto; A cooling water distribution main pipe 32 in which cooling water is sprinkled with the closed type heat exchanging part 20a and a cooling water inlet 31 is formed, a plurality of cooling water distribution pipes 33 branched from the cooling water distribution main pipe 32, (30a) having a plurality of spray nozzles (34) provided in the spray nozzle (33); An eliminator 29 disposed above the water spraying unit 30a to collect droplets of droplets; The air supply device is disposed in the exhaust opening and flows the air supply through the air supply mechanism (4) and the louver (8), and exhausts that have undergone the heat exchange are discharged to the outside through the exhaust opening. The fan cylinder (11a) A blowing fan unit 10a having a blowing fan 12a accommodated in the fan housing 12a and a fan motor 15 driving the blowing fan 12a; A heat transfer portion 70b formed of a plurality of flat heat transfer fins 79a and a heat transfer pipe 71a and a high temperature fluid inlet port 42 provided in one region are disposed in the exhaust region 6 to reduce dry cooling and white smoke, A high temperature fluid inlet header 41 to which one end of the heat transfer tube 71a is connected and a cooling high temperature fluid outlet 46 in one area and a cold high temperature fluid outlet header 46 to which the other end of the heat transfer tube 71a is connected 45), and a plurality of flat heat transfer fins (40a) arranged step-wise at a predetermined height so as to form an exhaust bypass flow passage (7) from a lower surface of the first dry heat exchange section (40a) A high temperature fluid inlet header 41 provided with a high temperature fluid inlet port 42 in one region and one end of the heat transfer pipe 71a connected to the high temperature fluid inlet header 41a, A cooling high-temperature fluid outlet 46 is provided, and the other end of the heat transfer pipe 71a is connected Second dry heat exchange section (50a) having a high-temperature cooling fluid outlet header (45); And is provided between the first dry heat exchanging part (40a) and the second dry heat exchanging part (50a) so as to face the exhaust bypass flow path (7) and opens and closes the exhaust flowing in the bypass flow path A bypass opening / closing member 80a composed of an exhaust opening / closing member 81a composed of a damper having an opening / closing blade of the exhaust opening / closing member 81a, a rotating shaft for opening and closing the exhaust opening / closing member 81a, ; A water collecting tank (19) having a cooling water outlet (101) in one area; A cooling water supply pipe 102 connected between the cooling water inlet 31 of the water spraying unit 30a and the cooling water outlet 101 of the water collecting tank 19 for supplying cooling water to the water spraying unit 30a, Type cooling tower 1a having a water spray pump 100 provided in a closed type counterflow type cooling tower 1a.

An opening formed in the side casing (2a) facing the exhaust bypass flow passage (7) expands the dry cooling heat exchange area and improves the efficiency of white smoke reduction, and opens at both sides, A heat transfer portion 70b including a plurality of flat heat transfer fins 79a and a heat transfer pipe 71a accommodated in the outside air dry heat exchange chamber 64 and a high temperature fluid supply pipe path There is provided a high temperature fluid inlet header 41 having a fluid inlet 42 and connected to one end of the heat transfer pipe heat transfer tube 71a and a cooling high temperature fluid outlet 46 to which a cold high temperature fluid outlet pipeline 132b is connected, And an outside air dry heat exchanger 60a having a cooling high-temperature fluid outlet header 45 to which the other end of the heat transfer tube 71a is connected.

The high-temperature fluid supply pipe 131a for supplying the high-temperature fluid to the closed type heat exchanging unit 20a is also provided with a high-temperature fluid supply pipe 131a which is opened to supply the high-temperature fluid to the closed type heat- A high temperature fluid opening / closing control valve (111) for closing (OFF) the supply of the high temperature fluid at the time of OFF (OFF); Temperature fluid outflow conduit 132a for supplying a cooling high-temperature fluid to the hermetically sealed heat exchanging unit 20a, and at least one of the whitening-reduced humidity-dry cooling operation, the wet-dry cooling operation, The cooling high temperature fluid flowing out from the first dry heat exchanging part 40a and the second dry heat exchanging part 50a is opened to be supplied to the hermetically sealed heat exchanging part 20a, And a cooling high-temperature fluid opening / closing control valve 112 for closing (OFF) the supply of the high-temperature fluid.

A cooling-high-temperature fluid supply pipe (not shown) for supplying a selected one of the high-temperature fluid or the cooling high-temperature fluid to the hermetic heat exchanger 20a between the high-temperature fluid opening / closing control valve 111 and the cooling high- 133a.

A cooling-high-temperature fluid supply line 133c is connected to the cooling-high-temperature fluid supply port 22 of the closed type heat exchange unit 20a, and a cooling fluid discharge line 134 is connected to the cooling fluid discharge port 26 have.

The cooling-high-temperature fluid supply conduit 133c is connected to the cooling-high-temperature fluid conduit 133b branching from the cooling-high-temperature fluid supply conduit 133a.

The cooling fluid outflow conduit 134 is connected to a cooling fluid supply conduit 140 for supplying a cooling fluid to the cooling load section 300.

The first dry heat exchanging part 40a and the second dry heat exchanging part 40a are connected to each other between the cooling high temperature fluid discharge line 133a and the cooling fluid supply line 140 for supplying the cooling fluid to the cooling load part 300. [ (20a, 20b, 20c) in order to prevent unnecessary fluid flow resistance when the high temperature cooling fluid flowing out from the closed heat exchangers (50a, 50a) satisfies the set cooling fluid A cooling fluid bypass flow path (137) for bypassing the cooling fluid (or cold water) to the cooling fluid supply pipe path (140) is connected to the cooling fluid bypass flow path (137) A valve 113 is provided.

The high temperature fluid is supplied from the high temperature fluid inlet port 42 of the first dry heat exchanging section 40a and the second dry heat exchanging section 50a to the high temperature fluid supply path 130 which supplies the high temperature fluid from the cooling load section 300 A high temperature fluid supply pipe path 131c is connected between the high temperature fluid supply pipe path 131b and a cooling high temperature fluid supply pipe path 132b is connected between the cooling high temperature fluid discharge port 46 and the cooling high temperature fluid supply pipe path 132a have.

A high temperature fluid is supplied from the high temperature fluid inlet port 42 of the outside air dry heat exchanging section 60a to the high temperature fluid supply conduit 131b branched from the high temperature fluid supply conduit 130 for supplying the high temperature fluid from the cooling load section 300, And a cooling-high-temperature fluid supply pipe path 132b is connected between the cooling high-temperature fluid discharge port 46 and the cooling high-temperature fluid supply pipe path 132a.

A control signal input means for inputting a control signal for controlling to select one of a wet cooling operation, a white smoke reducing humidity-dry cooling operation, a wet-dry cooling operation and a dry cooling operation, A cooling high temperature fluid temperature detector 122 for detecting the temperature of the cooling high temperature fluid flowing through the cooling high temperature fluid supply pipe path 132a and outputting a detection signal, An outside air temperature detector 123 for detecting the temperature of the outside air and outputting a detection signal, and an outside air humidity detector 124 for detecting the humidity of the outside air and outputting a detection signal.

Next, a condenser 311 to which the high-temperature fluid supply line 130 and the cooling fluid supply line 140 are connected, and an evaporator 313 to which the cold water supply line 321a and the cold water return line 322a are connected A refrigerator control unit (316) for controlling the refrigerator (310) and the refrigerator (310); A bypass cooling fluid supply pipe path 321b connected between the cooling water supply pipe path 321a for supplying cold water to the cooling device 320 and the cooling fluid supply pipe path 140 and supplying the cooling fluid to the cooling device 320, A reverse osmosis (328) provided in the bypass cooling fluid supply line (321b) to block reverse flow of the cold water to the cooling fluid supply line (140) and the condenser (311); An open / close control valve (325) provided in the cold water return line (322a) where a cold water pump (330) for supplying cold water return to the evaporator (313) is disposed and opens and closes the supply of cold water return; A cold water return pipe 322b connected between the cold water return pipe 322a and the hot fluid supply pipe 130 to bypass the cold water return to the cooling tower 1a and the bypass cold water return pipe 322b, An open / close control valve 326 for opening and closing the bypass flow of cold water return; An on-off control valve 327 provided on the high-temperature fluid supply line 130 to block reverse flow of cold water from the hot fluid outlet of the condenser 311; A control signal input unit provided in the cooling fluid supply line 140 to select one of chiller cooling operation and cooling tower outdoor cooling operation, And a cooling fluid temperature detector 315 for detecting the temperature of the cooling fluid flowing through the outdoor heat exchanger 140 and outputting a detection signal.

Next, the fan motor 15 switch and the operation mode control operation portion 221 are controlled according to the ON and OFF control signals of the high temperature fluid pump 340 switch for operating the high temperature fluid pump 340 An interlocking control unit 210,

The outside air opening / closing portions 90a and 90b / closing (OFF), the bypass exhaust opening / closing portions 80a, 80b and 80c / opening (ON) according to the set wet cooling operation detection temperature t1 / ON signal of the cooling fluid temperature detector 221, , High-temperature fluid supply open / close control valve (111) / open, cooling high temperature fluid supply open / close control valve (112) / close (OFF), sprinkler pump (100) A wet cooling operation mode 222 for controlling the cooling operation mode,

The outdoor air opening / closing portions 90a, 90b / open () are opened in accordance with the detected white smoke reduction operation temperature t3 / ON of the outdoor air temperature detector 123 and the set smoke white smoke detection operation humidity h1 / ON signal of the outdoor air humidity detector 124 OFF control valve 112 is opened / closed, the high-temperature fluid supply opening / closing control valve 111 is closed / closed (OFF), and the high temperature fluid supply opening / (223) which controls the white smoke reduction operation by wet-dry cooling,

90b / open (ON), detour exhaust opening / closing portions 80a, 80b, 80c / closed (OFF) according to the humidity-dry cooling operation detection temperature t2 / ON signal of the outdoor temperature detector 123 ), Cooling High temperature fluid supply open / close control valve (112) / Open (ON), High temperature fluid supply open / close control valve (111) Mode 224,

The water spray pump 100 / stop (OFF), the outside air open / close portions 90a and 90b / open (ON) and the bypass exhaust open / close portion 80a (OFF) according to the detected dry cooling operation detection temperature t4 / ON signal of the outside air temperature detector 123 , 80b, 80c / OFF, cooling High temperature fluid supply open / close control valve 112 / ON, high temperature fluid supply open / close control valve 111 / An operation mode control unit 220 having a dry cooling operation mode 225 for controlling the operation mode,

The cooling water circulation flow opening / closing control valve 113 / opening (ON) is controlled according to the cooling fluid bypass flow detection temperature (t5 / ON) signal of the cooling high temperature fluid temperature detector 122, A high temperature fluid supply opening / closing control valve 111 / closing (OFF), a high temperature fluid supply opening / closing control valve 112 being closed (OFF) so as to circulate cooling fluid to the cooling load section 300 The flow controller 230,

(T6 / ON) detected by the cooling fluid temperature detector 315 and the ambient temperature cold water operation detection temperature t7 / ON set by the outdoor air temperature detector 123 are computed according to the applied control signal (326) / open (ON / OFF), cold water pump (330) / stop (OFF), high temperature fluid opening / closing control valve (327) An outdoor air cooling cold water control unit 240 for controlling outdoor air cooling cold water operation by controlling cold water return opening / closing control valve 325 / closing (OFF)

A control signal setting unit 201 for setting a control value, a display unit 202 for indicating a control state, a control signal input unit 203 for inputting detection and contact signals, a control signal output unit for outputting the applied control signal to the operation unit An alarm unit 205 for alarming abnormal operation and failure, a remote control signal input / output unit 206 for remotely controlling through a wired and wireless communication network, an external storage unit 207 for storing control data externally, And a control unit 200 having a power supply unit 208 for supplying power.

Here, the outdoor air cooling and cooling water control unit 240 is configured in the control unit 200 of the cooling tower 1a, but it may also be configured in the refrigerator control unit 316.

Next, the main operation according to the configuration of the first embodiment of the present invention will be described.

Prior to the description, the main operation of the present invention will be described with respect to a representative example in the first embodiment, and a description of its main operation will be omitted in another embodiment described later.

 As shown in FIGS. 1 and 2, the wet cooling operation structure, the control structure and operation of the wet cooling operation mode 222 in FIG. 8A,

First, when the operation of the refrigerator 310 is started, the interlocking controller 210 is operated according to the ON signal of the high temperature fluid pump 340 and the fan motor 15 switch The operation mode control operation unit 221 is interlocked to select the wet cooling operation mode 222 as the basic operation mode and the blower fan to operate.

When the operation is started in the wet cooling operation mode 222, the bypass exhaust opening / closing portion 80a is opened, the outside air opening / closing portion 90a is closed, and the closed type heat exchanging portion 20a is filled with the high temperature fluid And the cooling high-temperature fluid is supplied from the first dry heat exchanging part 40a and the second dry heat exchanging part 50a to the hermetically sealed heat exchanging part 20a at the same time that the opening / closing control valve 111 for supplying the cooling high- The opening / closing control valve 122 is closed (OFF), and the sprinkler pump 100 is operated (ON).

The high temperature fluid flowing through the closed type heat exchanging part 20a is brought into contact with the cooling water sprinkled from the spray part 30a and the supply air flowing through the supply mechanism 4, The high temperature fluid which is supplied to the condenser 311 of the cooling load unit 300 through the cooling fluid supply pipe 140 and which has undergone the refrigerant condensation heat exchange while flowing through the condenser 311 is supplied to the high temperature fluid supply pipe lines 130, And is recycled to the closed type heat exchange unit 20a through the fluid pump 340. [

On the other hand, the exhaust of the saturated moisture vaporizer that has undergone the heat exchange while passing through the hermetically sealed heat exchanging portion 20a is supplied to the evaporator 29, the exhaust region 6, the opened bypass exhaust opening / closing portion 80a, And the exhaust port 9 in this order, and is discharged to the outside.

Here, a part of the exhaust gas may flow through the first dry heat exchanging part 40a and the second dry heat exchanging part 50a, which have a higher resistance than the exhaust bypass flow path 7.

Such a wet cooling operation process is continued or repeated as long as it is operated in the wet cooling operation mode 222. When the wet cooling operation mode 222 is switched to another operation mode, it is operated according to the operation mode.

Next, as shown in FIG. 3, the structure of the control of the white smoke reducing humidity-dry cooling operation structure and the control structure and operation of the white smoke reducing humidity-dry cooling operation mode 223 in FIG.

And the white smoke reduction operation temperature detection signal t3 of the outdoor air temperature detector 123 and the white smoke reduction operation operation humidity detection signal h1 of the ambient air humidity detector 124, which are provided in proximity to the air supply mechanism 4, When the operation is started in the dry operation mode 122, the bypass exhaust opening / closing unit 80a is closed, the outside air opening / closing unit 90a is opened, and the first dry heat exchanging unit 40a and the second dry heat exchanging unit The open / close control valve 122 for supplying the cooling high-temperature fluid from the dry heat exchange section 50a and the outside air dry heat exchange section 60a to the closed type heat exchange section 20a is opened and at the same time the closed type heat exchange section 20a Closing control valve 111 for supplying the high-temperature fluid to the control valve 111 is closed (OFF).

The first dry heat exchanging unit 40a, the second dry heat exchanging unit 50a, and the outside air dry heat exchanging unit 60a are connected to the condenser 311 through the high temperature fluid pump 340 and the high temperature fluid supply pipe lines 130, The hot fluid supplied to the first dry heat exchanging unit 40a, the second dry heat exchanging unit 50a, and the outside air dry heat exchanging unit 60a, The cooling fluid cooled by the wet cooling heat exchange while flowing into the closed type heat exchange unit 20a is supplied to the condenser 311 through the cooling fluid supply pipe 140 and flows into the condenser 311 The high temperature fluid having undergone the refrigerant condensation heat exchange is supplied to the first dry heat exchanger 40a, the second dry heat exchanger 50a and the outside air dry heat exchanger (not shown) through the high temperature fluid supply pipes 130, 131b and the high temperature fluid pump 340 60a.

On the other hand, the air supply whose humidity is lowered through the heat exchange between the first dry heat exchanging part (40a) and the second dry heat exchanging part (50a) and the heat exchanging part of the outside air dry heat exchanging part (60a) The humidity of the exhaust gas becomes more unfavorable while mixing in the region 6, and the exhaust of low humidity is discharged to the outside, thereby reducing the occurrence of white smoke.

The above-described white smoke reducing humidity-dry cooling operation 223 is continuously or repeatedly performed as long as it is operated in the white smoke reducing humidity-dry cooling operation mode 223, and is switched to another operation mode during the white smoke reduced- And is operated according to the operation mode.

Here, in the heat exchange using the heat of the high temperature fluid or the heat exchange of the outside air, the heat of the high temperature fluid is transferred to the exhaust or the outside air, and the high temperature fluid is cooled by the heat exchange action. That is, since the cooling high-temperature fluid lower than the temperature of the high-temperature fluid supplied to the closed type heat exchanging unit 20a is supplied, the amount of cooling of the closed type heat exchanging unit 20a can be reduced corresponding to the amount of the shared cooling, So that the size of the hermetically sealed heat exchanging portion 20a can be reduced.

Next, as shown in Fig. 3, the wet-dry cooling operation structure, and the wet-and-dry cooling operation mode 224 in Fig. 8B,

When the wet-dry cooling operation mode 224 operation is started according to the humidity-dry cooling operation detection temperature t2 / ON signal of the outdoor temperature detector 123, the bypass exhaust opening / closing unit 80a is closed, The outside air opening and closing portion 90a is opened and the cooling high temperature (high temperature) from the first dry heat exchanging portion 40a, the second dry heat exchanging portion 50a, and the outside air dry heat exchanging portion 60a to the closed type heat exchanging portion 20a The opening and closing control valve 122 for supplying the fluid is opened and the opening and closing control valve 111 for supplying the high temperature fluid to the closed type heat exchanging part 20a is closed.

The first dry heat exchanging part 40a, the second dry heat exchanging part 50a and the outside air dry heat exchanging part 60a (60a) are connected to the first dry heat exchanging part 40a, the second dry heat exchanging part 50a, and the outside air dry heat exchanging part 60a Is passed through the first dry heat exchanging part 40a, the second dry heat exchanging part 50a, and the outside air dry heat exchanging part 60a while passing the cooling high temperature fluid cooled by the dry cooling heat exchange to the closed type heat exchange The cooling fluid cooled by the wet cooling heat exchange while being supplied to the condenser 311 is supplied to the condenser 311 through the cooling fluid supply pipe 140 and flows into the condenser 311 The high temperature fluid having undergone the refrigerant condensation heat exchange is passed through the high temperature fluid supply conduits 130 and 131b and the high temperature fluid pump 340 to the first dry heat exchanger 40a and the second dry heat exchanger 50a, (60a).

This wet-dry cooling operation process is continued or repeated as long as it is operated in the wet-dry cooling operation mode 224, and when it is switched to another operation mode during the wet-dry cooling operation mode 224, .

Next, as shown in FIG. 4, the dry cooling operation structure, and the dry cooling operation mode 225 in FIG. 8B,

When the dry cooling operation mode 225 operation is started in accordance with the detected dry cooling operation detection temperature t4 / ON signal of the ambient temperature detector 123, the water spray pump 100 / stop (OFF), the outside air shutoff units 90a and 90b ), The high temperature fluid supply opening / closing control valve 112 / opening (ON), the high temperature fluid supply opening / closing control valve 111 / closing (ON), the bypass exhaust opening / closing portions 80a, 80b and 80c / OFF).

The first dry heat exchanging part 40a, the second dry heat exchanging part 50a and the outside air dry heat exchanging part 60a (60a) are connected to the first dry heat exchanging part 40a through the high temperature fluid pump 340 and the high temperature fluid supply path Is passed through the first dry heat exchanging part 40a, the second dry heat exchanging part 50a, and the outside air dry heat exchanging part 60a while passing the cooling high temperature fluid cooled by the dry cooling heat exchange to the closed type heat exchange The cooling fluid cooled by the dry cooling heat exchange while supplying the cooling fluid to the closed portion 20a and flowing through the closed type heat exchange portion 20a is supplied to the condenser 311 through the cooling fluid supply pipe 140 and flows into the condenser 311 The high temperature fluid having undergone the refrigerant condensation heat exchange is passed through the high temperature fluid supply conduits 130 and 131b and the high temperature fluid pump 340 to the first dry heat exchanger 40a and the second dry heat exchanger 50a, (60a).

Such a dry cooling operation process is continued or repeated as long as it is operated in the dry cooling operation mode 224, and is operated according to the operation mode when it is switched to another operation mode during the dry cooling operation.

Next, as shown in FIG. 5, there is shown a system of the control structure and operation of the dry cooling and cooling fluid bypass operation structure, the cooling fluid bypass flow control section 230 in FIG. 8A, and the dry cooling operation mode 225 in FIG. ,

When the dry cooling and cooling fluid bypass flow operation is started in accordance with the set cooling fluid bypass flow detection temperature (t5 / ON) signal of the cooling high temperature fluid temperature detector 122, the water spray pump 100 / stop (OFF) The flow control valve 113 is opened / closed, the high temperature fluid supply control valve 111 is closed / OFF, and the high temperature fluid supply control valve 112 is closed.

The first dry heat exchanging part 40a, the second dry heat exchanging part 50a and the outside air dry heat exchanging part 60a (60a) are connected to the first dry heat exchanging part 40a through the high temperature fluid pump 340 and the high temperature fluid supply path Is supplied to the first dry heat exchanging part 40a, the second dry heat exchanging part 50a, and the outside air dry heat exchanging part 60a while the cooling fluid having reached the cooling fluid temperature set by the dry cooling heat exchange The high temperature fluid supplied to the condenser 311 through the cooling fluid bypass flow path 137 and the cooling fluid supply pipe path 140 and the refrigerant condensation heat is exchanged while flowing through the condenser 311, And then recycled to the first dry heat exchanging unit 40a, the second dry heat exchanging unit 50a, and the outside air dry heat exchanging unit 60a through the high temperature fluid pump 340.

Such a dry cooling and cooling fluid bypass flow operation process is continued or repeated as long as the dry cooling and the cooling fluid bypass flow operation are being performed. If the operation mode is switched to another operation mode during the dry cooling and cooling fluid bypass operation, It works.

Next, as shown in the outside air cooling system using the white smoke reducing closed counterflow cooling tower of FIG. 6 and the control system of the outside air cooling cold water controller 240 in FIG. 8B,

(T6 / ON) detected by the cooling fluid temperature detector 315 and the ambient temperature cooling water operation detection temperature t7 / ON set by the outdoor air temperature detector 123, When cold cold water operation is started,

A cold water pump 330, a hot water fluid control valve 327, a cold water circulating water circulation control valve 326, and an open / , The cold water return opening / closing control valve 325 / closed (OFF).

The cooling water flowing through the cooling fluid supply pipe 140 and the bypass cooling fluid supply pipe 321b is supplied to the cooling device 320 through the cold water supply pipe 321a, The cold water return water whose temperature has been increased through the cooling heat exchange is recycled to the cooling tower 1a through the cold water return pipe 322a, the bypass cold water return pipe supply pipe 322b and the hot fluid supply pipe line 130. [

When the chilled water temperature detection value of the chilled fluid temperature detector 315 and the chilled water chilled water operation detection temperature of the outdoor air temperature detector 123 are calculated and the cold water chilled water operation is started according to the applied control signal,

A cold water pump 330, a hot water circulation control valve 327, a cold water circulation water circulation control valve 326, , The cold water return opening / closing control valve 325 is opened (ON), and the freezer cold water operation is performed.

The outdoor air cooling cold water operation process is repeated as long as the outdoor air cooling cold water operation is performed.

FIG. 9 is a schematic side sectional view showing a white smoke reducing closed type countercurrent cooling tower and a wet cooling operation structure according to a second embodiment of the present invention, FIG. 10 is a schematic side sectional view showing the white smoke reduction operation structure of FIG. 9, Fig. 11 is a schematic vertical sectional view of the heat transfer portion of Fig. 9, Fig. 12 is a schematic side view of the hermetically sealed heat exchanging portion of Fig. 9, Fig. 13 is a schematic plan view of the configuration of the hermetically- FIG. 14 is a schematic plan view of the first dry heat exchanger and the second dry heat exchanger of FIG. 9, and FIG. 15 is a schematic perspective view of the heat transfer portion of FIG. As shown in these figures, the white smoke-reduced closed countercurrent cooling tower 1b of the second embodiment of the present invention differs from the above-

A plurality of flow path dividing walls 73 divide the inner space to form multiple flow paths 72 and flat portions 78a are formed on both sides of the flow paths 72. Circumferential portions 78b are formed at one end of the flow paths 72 A flat plate type heat transfer tube 71b in which a flow guide part 76 is formed at the other end of the flow path 72 and a heat transfer tube 71b which is provided on both side flat plate parts 78a along the longitudinal direction of the heat transfer tube 71b, So that the flow of cooling water flowing on the surface of the flat plate portion 78a of the heat transfer pipe 71b is switched in and out to reduce the separation of the cooling water from the surface of the heat transfer pipe 71b and the contact deficiency region, A heat transfer portion 70c composed of a flow switching portion 75 composed of an inwardly directed portion 76a and an outwardly directed portion 76b for increasing the heat exchange efficiency and increasing the heat exchange efficiency and forming the guide slope at a predetermined angle, Cooling-high temperature fluid supply line 133c A cooling-high temperature fluid inlet header 21 to which a cooling-high temperature fluid inlet 22 is connected and to which one end of the heat transfer tube 71b is connected, a cooling fluid outlet 26 to which a cooling fluid outlet pipe 134 is connected, And a hermetically sealed heat exchanging part 20b having a cooling fluid outflow header 24 to which the other end of the heat transfer pipe 71b is connected.

The fluid flowing in the heat transfer pipe (71b) flows in the horizontal direction through the heat transfer pipe (71b) and flows into the cooling fluid transfer header (21) and the cooling fluid discharge header (24) And a plurality of flow path dividing walls 28 for dividing the fluid flow path.

Next, an open type heat exchanging unit 20f is provided between the hermetically sealed heat exchanging unit 20b and the spraying unit 30a for dispersing and cooling the cooling water sprinkled by the hermetically sealed heat exchanging unit 20b.

Next, a heat transfer portion 70d made up of a flat plate-type heat transfer tube 71b which forms a multiple flow path 72 by a plurality of flow path partition walls 73 and a plurality of flow path partition walls 73, which are formed by bending a flat portion and a bent portion, A high temperature fluid inflow header 42 to which a fluid supply pipe path 131c is connected and a high temperature fluid inflow header 41 to which one end of the heat transfer pipe 71b is connected and a cooling high temperature A first dry heat exchanging part 40b and a second dry heat exchanging part 50b having a fluid outlet 46 and a cooling high temperature fluid outlet header 45 to which the other end of the heat transfer tube 71b is connected have.

The fluid flowing in the heat transfer pipe (71b) flows in the horizontal direction and flows into the heat transfer pipe (71b) through the heat transfer pipe (71b) so as to perform heat exchange in the high temperature fluid input header (41) And a plurality of flow path dividing walls 48 for dividing the flow path of the fluid.

Next, an outer air dry heat exchange chamber 64 opened on both sides, a serpentine heat transfer fin 79b accommodated in the outside air dry heat exchange chamber 64 and bent in a flat portion and a curved portion, and a plurality of flow path partition walls 73, And a high temperature fluid inlet port 42 to which the high temperature fluid supply pipe path 131c is connected and which has one end portion of the heat transfer pipe 71b connected to the heat transfer portion 70d and the high temperature fluid supply pipe path 131c, And a cooling high temperature fluid outflow header 46 to which a cooling high temperature fluid outflow conduit 132b is connected and to which the other end of the heat conduction pipe 71b is connected, And an outside air dry heat exchanger 60b.

Although not shown in the drawing, the fluid flowing in the heat transfer pipe 71b is passed through the high temperature fluid inlet header 41 and the cooling high temperature fluid outlet header 45 so that the fluid flows in the horizontal (or vertical) And a plurality of flow path dividing walls for dividing a flow path of the fluid flowing in and flowing out through the heat transfer pipe 71b.

Next, an outside air opening / closing member 91b disposed outside the outside air dry heat exchange chamber 64 and composed of a rolling shutter, and an opening / closing member driver 92b for opening / closing the outside air opening / Closing portion 90b.

FIG. 16 is a schematic side sectional view showing a white smoke-reducing closed countercurrent cooling tower and a wet cooling operation structure according to a third embodiment of the present invention, FIG. 17 is a schematic plan view of the configuration of the closed- FIG. 18 is a schematic perspective view of the heat transfer portion of FIG. 16, and FIG. 19 is a schematic perspective view of another heat transfer portion of FIG. As shown in these figures, the white smoke-reduced closed countercurrent cooling tower 1c of the third embodiment of the present invention differs from the above-

A heat transfer pipe 71b which forms one flow path 72 and a flow switching part 71b which is recessed in the center of the heat transfer pipe 71b on both side flat plate parts 78a along the longitudinal direction of the heat transfer pipe 71b And a cooling-high-temperature fluid inlet 22 to which the cooling-high-temperature fluid supply conduit 133c is connected, and a heat transfer portion 70e including a serpentine heat transfer fin 79b provided on the flat plate portion 78a, There is provided a cooling-high temperature fluid inlet header 21 to which one end of the heat transfer pipe 71b is connected and a cooling fluid outlet 26 to which the cooling fluid outlet pipe 134 is connected and the other end of the heat transfer pipe 71b is connected And a hermetically sealed heat exchanging portion 20c having a cooling fluid outlet header 24.

Next, an open type heat exchanging unit 20f is provided between the closed type heat exchanging unit 20c and the water spraying unit 30a for dispersing and cooling the cooling water sprinkled by the closed type heat exchanging unit 20c.

Next, the heat transfer portion 70f including the tabular heat transfer fins 79b and the plate-like heat transfer tubes 71b forming one flow path 72, and the high temperature fluid inlet port 42 to which the high temperature fluid supply line path 131c is connected A high temperature fluid inlet header 41 to which one end portion of the heat transfer pipe 71b is connected and a cooling high temperature fluid outlet port 46 to which the cooling high temperature fluid outlet pipe 132b is connected, And a first dry heat exchanging part 40c and a second dry heat exchanging part 50c having a cooling high temperature fluid outlet header 45 to which the ends are connected.

Although not shown in the drawing, in the high-temperature fluid inlet header 41 and the cooling high-temperature fluid outlet header 45, a fluid flowing in the heat transfer pipe 71b passes in the horizontal direction and flows through the heat transfer pipe 71b And a plurality of flow path dividing walls for dividing a flow path of the fluid flowing in and flowing out through the flow path dividing wall.

Next, an outside air opening / closing member 81b constituted by a rolling shutter is provided between the first dry heat exchanging section 40c and the second dry heat exchanging section 50c, and an opening / closing member driver 81b for lifting and opening the outside air opening / And a bypass exhaust opening / closing portion 80b composed of a bypass passage opening / closing portion 82b.

Next, a heat transfer portion 70f including a flat plate-type heat transfer tube 71b accommodated in the outside-air dry heat exchange chamber 64 and forming a single flow path 72 and a dead heat transfer fin 79b, a high-temperature fluid supply line 131c A high temperature fluid inlet header 41 to which one end of the heat transfer tube 71b is connected and a cooling high temperature fluid outlet port 46 to which a cooling high temperature fluid outlet conduit 132b is connected, And an outside air dry heat exchanger 60c having a cooling high temperature fluid outlet header 45 to which the other end of the heat transfer tube 71b is connected.

Although not shown in the drawing, the fluid flowing in the heat transfer pipe 71b passes through the high temperature fluid inlet header 41 and the cooling high temperature fluid outlet header 45 in a horizontal (or vertical) And a plurality of flow path dividing walls for dividing the flow path of the fluid flowing in and flowing out through the heat transfer pipe 71b.

20 is a schematic side cross-sectional view showing a white smoke reducing closed type countercurrent cooling tower and a wet cooling operation structure according to a fourth embodiment of the present invention, FIG. 21 is a cross sectional view showing the white smoke- And FIG. 22 is a schematic side cross-sectional view showing the white smoke reduction operation structure of FIG. As shown in these figures, the white smoke-reduced closed countercurrent cooling tower 1d of the fourth embodiment of the present invention differs from the above-

A side casing 2a forming a heat exchange zone, an air supply zone 5 and an exhaust zone 6; An exhaust opening formed in an upper end portion of the side casing 2a; A feed mechanism (4) formed by opening one area below the side casing (2a); An enclosed heat exchanger (20b, 20c) disposed in the heat exchange zone; An open type heat exchanging part 20f provided below the hermetically sealed heat exchanging parts 20b and 20c; A water spraying portion 30a disposed above the hermetically sealed heat exchanging portions 20b and 20c; An eliminator 29 disposed above the water spraying portion 30a; A first dry heat exchanging part (40b) disposed in the exhaust area (6) and forming a heat exchange area expanding part (49) for expanding the heat exchange area to reduce the heat exchange ability and the exhaust flow resistance, and a second dry heat exchanging part (50b); An exhaust opening / closing member 81c provided between the first dry heat exchanging unit 40b and the second dry heat exchanging unit 50b and having one open / close plate, a rotary shaft for opening and closing the exhaust opening / A bypass exhaust opening / closing portion 80c constituted by an opening and closing member driver 82a for driving a rotary shaft; A partition wall 3 for partitioning the air blowing fan space and the air supply area 5 and a discharge port 13 are arranged to penetrate the partition wall 3 to the inside of the air supply mechanism 4 and the fan housing 11b, A centrifugal blowing fan 12b accommodated in the housing 11b, and a motor 15 for driving the blowing fan 12b; The first dry heat exchanging part 40b and the second dry heat exchanging part 50b are disposed above the first dry heat exchanging part 40b and the second dry heat exchanging part 50b, the first dry heat exchanging part 40b and the second dry heat exchanging part 50b are switched to the wet cooling operation when the cooling failure occurs due to overload A plurality of cooling water distribution pipes 33 branching from the cooling water distribution main pipe 32 and a plurality of cooling water distribution pipes 34 branched from the cooling water distribution main pipe 32, And a water spraying part 30b having a plurality of water spraying nozzles 34 provided on the water spraying part 33. The water spraying part 30b is provided on the spraying part 30b and collects the scattered water droplets scattered through the water spraying part 30b. A minifier 29 '; B, and B provided in the cooling transport line 102 for supplying cooling water to the water spraying unit 30b and supplying cooling water to the water spraying unit 3a of the closed type heat exchange units 20b and 20c, A cooling water passage control valve 115 of the cooling water passage C and a cooling water supply passage 102 provided between the passage control valve 115 and the water spraying unit 30b; And a pressurized air blowing type air tightly closed type countercurrent cooling tower 1d having an eliminator 29 'provided on the water spraying portion 30b.

The supply of the cooling water to the water spraying unit 30b may be provided with an additional water spray pump 100 '.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the preferred embodiments.

It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims, And should be determined by equivalents to the scope of the claims.

The white smoke reducing closed countercurrent cooling tower according to the present invention and the outdoor air cooling system using the same can efficiently perform the switching operation of the wet cooling, the white smoke reducing wet-dry cooling, the wet-dry cooling and the dry cooling depending on the outside temperature and the load variation In addition, it is possible to actively cope with load fluctuations of the cooling of hot fluid and the production of cold water, and it is possible to enlarge the dry cooling heat exchange area and further improve the white smoke reducing efficiency. Further, in the wet cooling operation, And the consumption power of the high-temperature fluid pump can be reduced by shutting off the high-temperature fluid flowing through the dry heat exchanger during the wet cooling operation and flowing the heat to the closed heat exchanger , The cooling fluid, which has been cooled by the dry heat exchanging part during the dry cooling operation, is circulated to the cooling load part, It is possible to reduce the consumption power and to prevent the contamination of the heat exchange system and the channel in which the fluid is circulated and to use the low temperature outside air as the cooling medium in place of the freezer in the winter season or the middle season (early spring or late autumn) It is possible to efficiently produce cold water, save energy of cold water production, and to easily supply cooling fluid to condenser when producing chilled water of refrigerator by using one high temperature fluid pump and cooling device when producing cold water of cooling tower without waste of power consumption of pump It is possible to maximize the production period of outside cold cooling water, and to efficiently control and operate the wet cooling, the white smoke reducing wet-dry cooling, the wet-dry cooling, the switching operation of dry cooling and the cooling fluid bypass operation. It is possible to save the maintenance cost, so it is highly likely to be used in the industry.

1a, 1b, 1c, 1d, 1h, 1g: cooling tower 2a: side casing
2b: upper casing 3: partition wall
4: feed mechanism 5: feed zone
6: exhaust area 7: exhaust bypass flow passage
8: louver 9: exhaust
10a, 10b: blowing fan section 11a: fan cylinder
11b: fan housing 12a, 12b: blowing fan
13: Discharge port 15: Fan motor
18: water collecting tank 20a, 20b, 20c: closed type heat exchanging unit
20f: open-type heat exchanger 21: cooling-hot fluid inlet header
22: Cooling - High temperature fluid inlet 25: Cooling fluid outlet header
26: cooling fluid outlet 28, 48, 73:
29, 29 ': Eliminator 30a, 30b:
31: cooling water inlet 32: cooling water distribution host
33: Cooling water distribution pipe 34: Sprinkling nozzle
40a, 40b, 40c: first dry heat exchanger 41: high temperature fluid inlet header
42: high temperature fluid inlet 45: cooling high temperature fluid outlet header
46: cooling high-temperature fluid outlet 49: heat exchange area expansion part
50a, 50b, 50c: second dry heat exchanger 60a, 60b, 60c: outdoor dry heat exchanger
63: outside-air dry heat exchange area 64: outside-air dry heat exchange chamber
70a, 70b, 70c, 70d, 70e, 70f:
71a, 71b: heat transfer tube 72:
75: flow switching portion 76a: inward guiding portion
76b: outward guidance portion 77:
78a: flat plate portion 78b:
79a, 79b: heat transfer fins 80a 80b, 80c: bypass exhaust opening /
81a, 81b, 81c: exhaust opening / closing members 82a, 92a, 92b:
90a, 90b: outside air opening / closing portions 91a, 91b: outside air opening /
100, 100 ': Sprinkling pump 101: Cooling water outlet
102, 102 ': cooling water supply lines 111, 112, 113, 115, 325, 326, 327:
Open / close control valves 121, 122, 123 and 315:
124: humidity detector 130, 131a, 131b, 131c: high temperature fluid ball
Supply pipes 132a and 132b: Cooling high-temperature fluid discharge pipe
133a, 133b, 133c: Cooling-high temperature fluid supply pipe
134: cooling fluid outflow conduit 137: cooling fluid bypass conduit
140: Cooling fluid supply line 200: Control unit
201: control value setting unit 202: display unit
203: control signal input unit 204: control signal output unit
205: alarm unit 206: remote control signal input /
207: external storage unit 208: power supply unit
210: interlock controller 220: operation mode controller
221: Operation mode control operation part 222: Wet cooling operation mode
223: Smoke reduction operation with white smoke - Dry operation mode 224: Humidification - Dry cooling operation mode
225: Dry Cooling Operation Mode 230: Cooling Fluid Bypass Flow Control
240: outdoor cooling water cold water controller 250: remote controller
300: cooling load unit 300a: outdoor cooling system
310: refrigerator 316: refrigerator controller
320: cooling device 321a: cold water supply pipe
321b: bypass cooling fluid supply pipe line 322a: cold water return pipe
322b: bypass cold water return pipe line 328:
330: cold water pump 340: high temperature fluid pump

Claims (24)

A side casing 2a and an upper casing 2b which form a heat exchange zone, an air supply zone 5 and an exhaust zone 6; An exhaust port 9 formed at either the center of the upper casing 2b or the upper end of the side casing 2a; Exchanged with the high temperature fluid introduced from the cooling load section 300 through the high temperature fluid supply conduits 130 and 131a and the high temperature fluid pump 340 to the cooling fluid supply conduit 140 To the cooling load section (300) through the heat exchanger (300); A water spraying unit 30a for spraying the cooling water supplied through the water spray pump 100 and the cooling water supply pipe 102 to the closed type heat exchange unit; Blowing fan parts (10a, 10b) for introducing the air supply through the air supply mechanism (4) formed in the side casing (2a) and discharging heat-exchanged exhaust through the exhaust port (9) to the outside; And a water collecting tank (19) disposed at a lower portion of the closed type heat exchanger and having a cooling water outlet (101) in one area,
Wherein the closed type heat exchanger performs cooling heat exchange with either wet cooling or dry cooling;
A first dry heat exchanger, and a second dry heat exchanger, which are disposed in the exhaust area 6 so as to reduce dry cooling and white smoke, and are arranged stepwise at a predetermined height so as to form an exhaust bypass flow path 7 from a lower surface of the first dry heat exchanger A second dry heat exchanger;
A bypass exhaust opening / closing unit provided between the first dry heat exchange unit and the second dry heat exchange unit facing the exhaust bypass flow passage and opening / closing the exhaust flowing in the bypass flow passage;
Temperature fluid supply line 131a for supplying a high-temperature fluid to the hermetically closed heat exchanging unit. During the wet cooling operation, the high-temperature fluid is opened to be supplied to the hermetically closed heat exchanging unit. When the wet cooling operation is stopped A high temperature fluid opening / closing control valve 111 for closing (OFF) the supply of high temperature fluid;
And at least one of the first dry heat exchanging operation and the second dry heat exchanging operation is performed in at least one of the at least one of the following processes: (ON) so that the cooling high temperature fluid flowing out from the second dry heat exchanging part is supplied to the closed type heat exchanging part, and the cooling high temperature fluid opening and closing control A valve 112;
And a control unit (200) for controlling at least one of a wet cooling operation, a white smoke reducing humidity-dry cooling operation, a wet-dry cooling operation and a dry cooling operation according to a control signal. The method according to claim 1,
The closed type heat exchanger includes a cooling-high temperature fluid inlet header 21 having a cooling-high temperature fluid inlet 22 to which the cooling-high temperature fluid supply tube path 133c is connected and to which one end of the heat transfer tube is connected, A cooling fluid outflow header (26) to which a conduit (134) is connected and a cooling fluid outflow header (24) to which the other end of the heat transfer tube is connected,
An enclosed heat exchanging portion 20a having a heat transfer portion 70a formed of a tubular heat transfer pipe 71a in which an straight pipe portion and a curved pipe portion are continuously formed in any one of a circular pipe, an elliptical pipe,
A flat plate type heat transfer tube 71b for partitioning the inner space by a plurality of flow path partition walls 73 to form the multiple flow paths 72 and a flat plate portion 78a or both flat plate portions 78a of the heat transfer pipe 71b in the direction of the center of the heat transfer pipe 71b so that the flow of the cooling water flowing on the surface of the flat plate portion 78a of the heat transfer pipe 71b is changed in the inward direction, An inward guiding portion 76a and an outward guiding portion 76b that reduce the amount of cooling water detachment and contact depletion regions and improve the heat exchange efficiency by increasing heat exchange area and heat exchange property, A closed type heat exchanging portion 20b having a heat transfer portion 70c composed of a flow switching portion 75 or
A heat transfer pipe 71b which forms one flow path 72 and a heat transfer pipe 71b which is provided on either one of the flat plate portions 78a or both flat plate portions 78a along the longitudinal direction of the heat transfer pipe 71b, A flow switching portion 75 formed of an inwardly directed portion 76a and an outwardly directed portion 76b which are formed to be recessed in a direction of a predetermined angle and form a guide sloped surface at a predetermined angle and formed on the outer surface of the flat plate portion 78a of the heat transfer pipe 71b A hermetically sealed heat exchanger 20c having a heat transfer portion 70e formed of a serpentine heat transfer fins 79b having a flat portion and a bent portion formed continuously with a predetermined height and width, Wherein the at least one cooling tower comprises at least one cooling tower. 3. The method of claim 2,
A flow guide part 77 is formed at one end of the flow path 72 of the plate-type heat transfer pipe 71b to extend outwardly in a triangular shape and increase a contact surface of the heat exchange medium (cooling water and air) Wherein the cooling tower is further formed with an airtightly closed countercurrent cooling tower. The method according to claim 1,
The first dry heat exchanger and the second dry heat exchanger include a high temperature fluid inlet header 41 having a high temperature fluid inlet 42 to which the high temperature fluid supply pipe path 131c is connected and to which one end of the heat transfer pipe is connected, Temperature fluid outflow header 46 to which the outflow conduit 132b is connected and a cooling high-temperature fluid outflow header 45 to which the other end of the heat transfer conduit is connected,
A plurality of flat heat transfer fins 79a and a heat transfer portion 70b including a heat transfer tube 71a which is either a circular tube or an elliptical or oval tube or a flat tube, The dry heat exchanger 40a, the second dry heat exchanger 50a,
Having a heat transfer portion 70d made up of a flat plate-type heat transfer tube 71b for forming multiple flow paths 72 by a plurality of flow path partitioning walls 73 and a plurality of flow path partitioning walls 73, The heat exchanging part 40b and the second dry heat exchanging part 50b or
A first dry heat exchanging part 40c and a second dry heat exchanging part 40c having a heat transfer part 70f composed of a serpentine heat transfer fins 79b formed by bending a flat part and a bent part and a flat heat transfer pipe 71b forming a single flow path 72, And the dry heat exchanging section (50c). 5. The method according to any one of claims 1 to 4,
Wherein either one of the first dry heat exchanging part or the second dry heat exchanging part overlaps the heat exchange area in any one of the one side part or the both side part of any one of the second dry heat exchanging part or the first dry heat exchanging part, Further comprising a heat exchange area expanding part (49) for expanding the heat exchange capability and reducing the exhaust flow resistance. The method according to claim 1,
The bypass exhaust opening / closing unit includes an exhaust opening / closing member 81a composed of a damper having a plurality of opening / closing blades, a rotating shaft for opening and closing the exhaust opening / closing member 81a by rotating the exhaust opening / closing member 81a, and an opening / closing member driver 82a for driving the rotating shaft The bypass exhaust opening / closing unit 80a,
An exhaust opening / closing member 80b constituted by a rolling shutter, a bypass opening / closing unit 80b constituted by an opening / closing synchronization member 82b for opening / closing the exhaust opening / closing member 81b by opening /
And a bypass exhaust opening / closing unit 80c constituted by an exhaust opening / closing member 81c having one opening / closing plate, a rotating shaft for opening and closing the exhaust opening / closing member 81c, and an opening / closing member driver 82a for driving the rotating shaft Wherein the cooling tower is composed of one unit. The method according to claim 1,
In the opening formed in one area of the side casing (2a) facing the exhaust area (6), the dry cooling heat exchange area is enlarged and the white smoke reduction efficiency is improved,
A high-temperature fluid inlet header 41 having a high-temperature fluid inlet 42 to which the high-temperature fluid supply conduit 131c is connected and to which one end of the heat transfer tube is coupled, a cooling high-temperature fluid outlet Temperature fluid outflow header 46 to which the conduit 132b is connected and the other end of the heat transfer tube is connected to the cooling high-temperature fluid outflow header 45,
An outer air dry heat exchange unit (70) accommodated in the outside air dry heat exchange chamber (64) and having a plurality of flat heat transfer fins (79a) and a heat transfer portion (70b) composed of a heat transfer pipe (71a) (60a),
A flat plate type heat transfer tube 71b which forms a multiple flow path 72 by a plurality of flow path partition walls 73 and a plurality of fan heat transfer fins 79b accommodated in the outside air dry heat exchange chamber 64 and bent in a flat portion and a curved portion, An outside air dry heat exchanging part 60b having a heat transfer part 70d made of
A heat transfer portion 70f composed of a tabular heat transfer fin 79b which is accommodated in the outside air dry heat exchange chamber 64 and is bent into a flat portion and a bent portion and a plate heat transfer pipe 71b which forms one flow path 72 And the outdoor heat exchanger (60c) having the outdoor air heat exchanger (60c). 8. The method of claim 7,
One of the outer side and the inner side of the outside air dry heat exchange chamber 64 is provided with an outside air opening and closing member 91a composed of a damper having a plurality of opening and closing blades, a rotating shaft for opening and closing the outside air opening and closing member 91a, An outside air opening / closing portion 90a constituted by an opening / closing member driver 92a for driving a rotating shaft or
And an outside air opening and closing unit 90b constituted by an outside air opening and closing member 91b constituted by a rolling shutter and an opening and closing member driver 92b for opening and closing the outside air opening and closing member 91b A closed type countercurrent cooling tower. The method according to claim 1,
When the dry cooling capacity is lowered due to the rise of the outdoor air temperature higher than the design outdoor temperature or the cooling trouble is caused by the cooling load overload of the cooling load unit 300 on the upper side of the first dry heat exchanger and the second dry heat exchanger, A second dry heat exchanging unit and a second dry heat exchanging unit for exchanging the first dry heat exchanging unit and the second dry heat exchanging unit for wet cooling operation, 32), a plurality of cooling water distribution pipes (33) branched from the cooling water distribution main pipe (32), and a water spraying part (30b) having a plurality of water spray nozzles (34) provided in the cooling water distribution pipe (33) Wherein the at least one cooling tower comprises at least one cooling tower. The method according to claim 1,
The high-temperature cooling water flowing out from the first dry heat exchanging part and the second dry heat exchanging part is introduced into the space between the cooling high-temperature fluid outflow conduit 132a and the cooling fluid supply conduit 140 for supplying the cooling fluid to the cooling load part 300, A cooling fluid bypass flow path 137 for bypassing the cooling fluid when the fluid meets a set cooling fluid temperature and an open / close control valve 113 (see FIG. 1) provided in the cooling fluid bypass flow path 137 for controlling the bypass flow of the cooling fluid Further comprising: an airtightly closed countercurrent cooling tower. The method according to claim 1,
The control unit 200 controls the fan motor 15 switch and the operation mode control operation unit 300 according to the ON and OFF control signals of the high temperature fluid pump 340 that operates the high temperature fluid pump 340. [ An interlocking controller 210 interlocked with the interlocking controller 221,
The outside air opening / closing portions 90a and 90b / closing (OFF), the bypass exhaust opening / closing portions 80a, 80b and 80c / opening (ON) according to the set wet cooling operation detection temperature t1 / ON signal of the cooling fluid temperature detector 221, , High-temperature fluid supply open / close control valve (111) / open, cooling high temperature fluid supply open / close control valve (112) / close (OFF), sprinkler pump (100) A wet cooling operation mode 222 for controlling the cooling operation mode,
The outdoor air opening / closing portions 90a, 90b / open () are opened in accordance with the detected white smoke reduction operation temperature t3 / ON of the outdoor air temperature detector 123 and the set smoke white smoke detection operation humidity h1 / ON signal of the outdoor air humidity detector 124 OFF control valve 112 is opened / closed, the high-temperature fluid supply opening / closing control valve 111 is closed / closed (OFF), and the high temperature fluid supply opening / (223) which controls the white smoke reduction operation by wet-dry cooling,
90b / open (ON), detour exhaust opening / closing portions 80a, 80b, 80c / closed (OFF) according to the humidity-dry cooling operation detection temperature t2 / ON signal of the outdoor temperature detector 123 ), Cooling High temperature fluid supply open / close control valve (112) / Open (ON), High temperature fluid supply open / close control valve (111) Mode 224,
The water spray pump 100 / stop (OFF), the outside air open / close portions 90a and 90b / open (ON) and the bypass exhaust open / close portion 80a (OFF) according to the detected dry cooling operation detection temperature t4 / ON signal of the outside air temperature detector 123 , 80b, 80c / OFF, cooling High temperature fluid supply open / close control valve 112 / ON, high temperature fluid supply open / close control valve 111 / An operation mode control unit 220 having a dry cooling operation mode 225 for controlling the operation mode,
The cooling water circulation flow opening / closing control valve 113 / opening (ON) is controlled according to the cooling fluid bypass flow detection temperature (t5 / ON) signal of the cooling high temperature fluid temperature detector 122, A high temperature fluid supply opening / closing control valve 111 / closing (OFF), a high temperature fluid supply opening / closing control valve 112 being closed (OFF) so as to circulate cooling fluid to the cooling load section 300 And a flow control unit (230). A side casing 2a and an upper casing 2b which form a heat exchange zone, an air supply zone 5 and an exhaust zone 6; An exhaust port 9 formed at either the center of the upper casing 2b or the upper end of the side casing 2a; Exchanged with the high temperature fluid introduced from the cooling load section 300 through the high temperature fluid supply conduits 130 and 131a and the high temperature fluid pump 340 to the cooling fluid supply conduit 140 To the cooling load section (300) through the heat exchanger (300); A sprinkling portion 30a sprinkled with the hermetically sealed heat exchanger; A dry heat exchanger arranged in the exhaust area (6) to reduce dry cooling and white smoke; Blowing fan parts (10a, 10b) for exhausting heat-exchanged exhaust to the outside through the exhaust port; A water collection tank disposed at a lower portion of the closed type heat exchange unit and having a cooling water outlet 101 in one area; Temperature fluid supply line 131a for supplying a high-temperature fluid to the hermetically closed heat exchanging unit. During the wet cooling operation, the high-temperature fluid is opened to be supplied to the hermetically closed heat exchanging unit. When the wet cooling operation is stopped A high temperature fluid opening / closing control valve (111) for closing (OFF) the supply of cooling high temperature fluid; And is provided in a cooling high-temperature fluid outlet pipeline (132a) for supplying a cooling high-temperature fluid to the closed type heat exchanger, and at least one of the whiteness reduced humidity-dry cooling operation, wet- A cooling high-temperature fluid opening / closing control valve (112) that opens (ON) such that cooling high-temperature fluid flowing out from the closed-type heat exchanger is supplied to the closed-type heat exchanger; And a control unit (200) for controlling at least one of a wet cooling operation, a white smoke reducing humidity-dry cooling operation, a wet-dry cooling operation and a dry cooling operation according to a control signal,
A condenser 311 to which the high temperature fluid supply line 130 and the cooling fluid supply line 140 are connected and an evaporator 313 to which the cold water supply line 321a and the cold water return line 322a are connected, A refrigerator (310) having any one of a refrigerator, a freezer, an absorption type refrigerator, and an absorption type cold and hot water generator, and a refrigerator control part (316) for controlling the refrigerator (310);
A bypass cooling fluid supply pipe path 321b connected between the cooling water supply pipe path 321a for supplying cold water to the cooling device 320 and the cooling fluid supply pipe path 140 and supplying the cooling fluid to the cooling device 320, A reverse osmosis (328) provided in the bypass cooling fluid supply line (321b) to block reverse flow of the cold water to the cooling fluid supply line (140) and the condenser (311);
An open / close control valve (325) provided in the cold water return line (322a) where a cold water pump (330) for supplying cold water return to the evaporator (313) is disposed and opens and closes the supply of cold water return;
A bypass cold water return pipe 322b connected between the cold water return pipe 322a and the high temperature fluid supply pipe path 130 to bypass the cold water return to the white smoke reduction closed countercurrent cooling tower and the bypass cold water return pipe An open / close control valve 326 provided in the open / close control valve 322b for opening / closing the bypass flow of the cold water return;
And an opening / closing control valve (327) provided in the high-temperature fluid supply line (130) to block reverse flow of cold water from the hot fluid outlet of the condenser (311). 13. The method of claim 12,
The cooling device 320 includes an air handling unit for cooling and heat-exchanging cooling air in a room, a thermohygrostat, a fan coil unit, an Internet data center (IDC) cooling unit, a water- Wherein the cooling system is at least one of a water cooled cooler, a convection heat radiator, and a cooler of a low temperature warehouse. 13. The method of claim 12,
The closed type heat exchanger includes a cooling-high temperature fluid inlet header 21 having a cooling-high temperature fluid inlet 22 to which the cooling-high temperature fluid supply tube path 133c is connected and to which one end of the heat transfer tube is connected, A cooling fluid outflow header (26) to which a conduit (134) is connected and a cooling fluid outflow header (24) to which the other end of the heat transfer tube is connected,
An enclosed heat exchanging portion 20a having a heat transfer portion 70a formed of a tubular heat transfer pipe 71a in which an straight pipe portion and a curved pipe portion are continuously formed in any one of a circular pipe, an elliptical pipe,
A flat plate type heat transfer tube 71b for partitioning the inner space by a plurality of flow path partition walls 73 to form the multiple flow paths 72 and a flat plate portion 78a or both flat plate portions 78a of the heat transfer pipe 71b in the direction of the center of the heat transfer pipe 71b so that the flow of the cooling water flowing on the surface of the flat plate portion 78a of the heat transfer pipe 71b is changed in the inward direction, An inward guiding portion 76a and an outward guiding portion 76b that reduce the amount of cooling water detachment and contact depletion regions and improve the heat exchange efficiency by increasing heat exchange area and heat exchange property, A closed type heat exchanging portion 20b having a heat transfer portion 70c composed of a flow switching portion 75 or
A heat transfer pipe 71b which forms one flow path 72 and a heat transfer pipe 71b which is provided on either one of the flat plate portions 78a or both flat plate portions 78a along the longitudinal direction of the heat transfer pipe 71b, A flow switching portion 75 formed of an inwardly directed portion 76a and an outwardly directed portion 76b which are formed to be recessed in a direction of a predetermined angle and form a guide sloped surface at a predetermined angle and formed on the outer surface of the flat plate portion 78a of the heat transfer pipe 71b A hermetically sealed heat exchanger 20c having a heat transfer portion 70e formed of a serpentine heat transfer fins 79b having a flat portion and a bent portion formed continuously with a predetermined height and width, Wherein the outdoor air cooling system comprises: 15. The method of claim 14,
A flow guide part 77 is formed at one end of the flow path 72 of the plate-type heat transfer pipe 71b to extend outwardly in a triangular shape and increase a contact surface of the heat exchange medium (cooling water and air) Wherein the air conditioning system further comprises a cooling fan. 13. The method of claim 12,
The dry heat exchanging section is constituted by a first dry heat exchanging section and a second dry heat exchanging section which is arranged stepwise so as to form an exhaust bypass flow passage (7) from either the lower surface or one surface of the first dry heat exchanging section ,
Further comprising a bypass exhaust opening / closing unit which is provided between the first dry heat exchanging unit and the second dry heat exchanging unit facing the exhaust bypass flow passage and opens / closes the exhaust flowing in the exhaust bypass flow passage (7) And the outdoor air cooling system. 17. The method of claim 16,
The first dry heat exchanger and the second dry heat exchanger include a high temperature fluid inlet header 41 having a high temperature fluid inlet 42 to which the high temperature fluid supply pipe path 131c is connected and to which one end of the heat transfer pipe is connected, Temperature fluid outflow header (45) having a cooling high-temperature fluid outlet (46) to which the outflow conduit (132b) is connected and the other end of the conduit is connected,
A first dry heat exchanging portion 40a and a second dry heat exchanging portion 50a having a plurality of flat heat transfer fins 79a and a heat transfer portion 70b composed of a heat transfer pipe 71a which is either a circular pipe, ),
Having a heat transfer portion 70d made up of a flat plate-type heat transfer tube 71b for forming multiple flow paths 72 by a plurality of flow path partitioning walls 73 and a plurality of flow path partitioning walls 73, The heat exchanging part 40b and the second dry heat exchanging part 50b or
A first dry heat exchanging part 40c and a second dry heat exchanging part 40c having a heat transfer part 70f composed of a serpentine heat transfer fins 79b formed by bending a flat part and a bent part and a flat heat transfer pipe 71b forming a single flow path 72, And the dry heat exchanging unit (50c). 17. The method of claim 16,
The bypass exhaust opening / closing unit includes an exhaust opening / closing member 81a composed of a damper having a plurality of opening / closing blades, a rotating shaft for opening and closing the exhaust opening / closing member 81a by rotating the exhaust opening / closing member 81a, and an opening / closing member driver 82a for driving the rotating shaft The bypass exhaust opening / closing unit 80a,
An exhaust opening / closing member 81b constituted by a rolling shutter, a bypass exhaust opening / closing unit 80b constituted by an opening and closing port synchronization 82b for opening and closing the exhaust opening / closing member 81b,
And a bypass exhaust opening / closing unit 80c constituted by an exhaust opening / closing member 81c having one opening / closing plate, a rotating shaft for opening and closing the exhaust opening / closing member 81c, and an opening / closing member driver 82a for driving the rotating shaft Wherein the outdoor air cooling system comprises a single outdoor air cooling system. 18. The method according to any one of claims 16 to 17,
Wherein either one of the first dry heat exchanging part or the second dry heat exchanging part overlaps the heat exchange area in any one of the one side part or the both side part of any one of the second dry heat exchanging part or the first dry heat exchanging part, Further comprising a heat exchange area expanding part (49) for expanding heat exchange capability and reducing exhaust flow resistance. 13. The method of claim 12,
In the opening formed in one area of the side casing (2a) facing the exhaust area (6), the dry cooling heat exchange area is enlarged and the white smoke reduction efficiency is improved,
A high-temperature fluid inlet header 41 having a high-temperature fluid inlet 42 to which the high-temperature fluid supply conduit 131c is connected and to which one end of the heat transfer tube is coupled, a cooling high-temperature fluid outlet Temperature fluid outflow header 46 to which the conduit 132b is connected and the other end of the heat transfer tube is connected to the cooling high-temperature fluid outflow header 45,
An outer air dry heat exchange unit (70) accommodated in the outside air dry heat exchange chamber (64) and having a plurality of flat heat transfer fins (79a) and a heat transfer portion (70b) composed of a heat transfer pipe (71a) (60a),
A flat plate type heat transfer tube 71b which forms a multiple flow path 72 by a plurality of flow path partition walls 73 and a plurality of fan heat transfer fins 79b accommodated in the outside air dry heat exchange chamber 64 and bent in a flat portion and a curved portion, An outside air dry heat exchanging part 60b having a heat transfer part 70d made of
A heat transfer portion 70f composed of a tabular heat transfer fin 79b which is accommodated in the outside air dry heat exchange chamber 64 and is bent into a flat portion and a bent portion and a plate heat transfer pipe 71b which forms one flow path 72 And the outdoor heat exchanger (60c) having the outdoor heat exchanger (60c). 21. The method of claim 20,
The outside air open / close member 91a, which is composed of a damper having a plurality of open / close blades, and the outside air open / close member 91a, are provided at any one of outside (outside air inlet) An outside air opening / closing portion 90a constituted by a rotating shaft for opening and closing by rotating the rotating shaft, and an opening / closing member driver 92a for driving the rotating shaft
And an outside air opening and closing unit 90b constituted by an outside air opening and closing member 91b constituted by a rolling shutter and an opening and closing member driver 92b for opening and closing the outside air opening and closing member 91b, Outdoor cooling system. 13. The method of claim 12,
The high-temperature cooling water flowing out from the first dry heat exchanging part and the second dry heat exchanging part is introduced into the space between the cooling high-temperature fluid outflow conduit 132a and the cooling fluid supply conduit 140 for supplying the cooling fluid to the cooling load part 300, A cooling fluid bypass flow path 137 for bypassing the cooling fluid when the fluid meets a set cooling fluid temperature and an open / close control valve 113 (see FIG. 1) provided in the cooling fluid bypass flow path 137 for controlling the bypass flow of the cooling fluid The outdoor air cooling system according to claim 1, further comprising: 13. The method of claim 12,
The control unit 200 controls the fan motor 15 switch and the operation mode control operation unit 300 according to the ON and OFF control signals of the high temperature fluid pump 340 that operates the high temperature fluid pump 340. [ An interlocking controller 210 interlocked with the interlocking controller 221,
The outside air opening / closing portions 90a and 90b / closing (OFF), the bypass exhaust opening / closing portions 80a, 80b and 80c / opening (ON) according to the set wet cooling operation detection temperature t1 / ON signal of the cooling fluid temperature detector 221, , High-temperature fluid supply open / close control valve (111) / open, cooling high temperature fluid supply open / close control valve (112) / close (OFF), sprinkler pump (100) A wet cooling operation mode 222 for controlling the cooling operation mode,
The outdoor air opening / closing portions 90a, 90b / open () are opened in accordance with the detected white smoke reduction operation temperature t3 / ON of the outdoor air temperature detector 123 and the set smoke white smoke detection operation humidity h1 / ON signal of the outdoor air humidity detector 124 OFF control valve 112 is opened / closed, the high-temperature fluid supply opening / closing control valve 111 is closed / closed (OFF), and the high temperature fluid supply opening / (223) which controls the white smoke reduction operation by wet-dry cooling,
90b / open (ON), detour exhaust opening / closing portions 80a, 80b, 80c / closed (OFF) according to the humidity-dry cooling operation detection temperature t2 / ON signal of the outdoor temperature detector 123 ), Cooling High temperature fluid supply open / close control valve (112) / Open (ON), High temperature fluid supply open / close control valve (111) Mode 224,
The water spray pump 100 / stop (OFF), the outside air open / close portions 90a and 90b / open (ON) and the bypass exhaust open / close portion 80a (OFF) according to the detected dry cooling operation detection temperature t4 / ON signal of the outside air temperature detector 123 , 80b, 80c / OFF, cooling High temperature fluid supply open / close control valve 112 / ON, high temperature fluid supply open / close control valve 111 / An operation mode control unit 220 having a dry cooling operation mode 225 for controlling the operation mode,
The cooling water circulation flow opening / closing control valve 113 / opening (ON) is controlled according to the cooling fluid bypass flow detection temperature (t5 / ON) signal of the cooling high temperature fluid temperature detector 122, A high temperature fluid supply opening / closing control valve 111 / closing (OFF), a high temperature fluid supply opening / closing control valve 112 being closed (OFF) so as to circulate cooling fluid to the cooling load section 300 And a flow control unit (230). 13. The method of claim 12,
Any one of the control unit 200 or the controller 316 of the refrigerator is provided with the outdoor temperature cooling water operation detection temperature t6 / ON set by the cooling fluid temperature detector 315 and the ambient temperature cooling water operation temperature set by the outdoor air temperature detector 123 The cold water pump 330 / stop (OFF), the high-temperature fluid opening / closing control valve 327 / the closing (OFF) A cold water cooling control unit for controlling the free cooling operation by controlling the cold water return bypass flow control valve 326 / opening and the cold water return control valve 325 / closing (OFF) 240). ≪ / RTI >

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