KR101456446B1 - plume and power reduction high-efficiency counter flow cooling tower and control method thereof - Google Patents

Abstract

The present invention relates to a high efficiency counterflow type cooling tower for reducing white smoke and power, and a control method thereof, wherein the dry heat exchanging part (40c) has a predetermined height from the bottom of the upper dry heat exchanging part (40a) and the upper dry heat exchanging part And a lower dry heat exchanging part (40b) arranged so as to be stepped on the lower dry heat exchanging part (40b); Is formed between the side of the upper dry heat exchanging part 40a in the direction of the lower dry heat exchanging part 40b and the upper side of the lower dry heat exchanging part 40b and does not pass through the upper dry heat exchanging part 40a and the lower dry heat exchanging part 40b An exhaust bypass flow channel (16) for bypassing non-resistance exhaust gas; Is provided between one side lower surface of the upper dry heat exchanging part (40a) and one side upper surface of one side of the lower dry heat exchanging part (40b) so as to face the side surface of the exhaust bypassing flow channel (16) A bypass exhaust opening / closing unit having an exhaust opening / closing member and an opening / closing member driver opening / closing the bypass flow of the exhaust gas; (ON) and a stop (OFF) control signal of a hot fluid pump 180 switch for supplying a high temperature fluid to the water spraying section 30a, the upper dry heat exchanging section 40a and the lower dry heat exchanging section 40b A wet cooling operation mode 122 for controlling the cooling of the high temperature fluid of the interlocking control unit 110 and the wet heat exchange unit 20a and a whitening reduction control for controlling the white smoke reduction of the upper dry heat exchanging unit 40a and the lower dry heat exchanging unit 40b. An operation mode control unit 120 configured by an operation mode 123, a dry cooling operation mode 124 for controlling high temperature fluid cooling of the upper dry heat exchange unit 40a and the lower dry heat exchange unit 40b, an upper dry heat exchange unit And a cooling high-temperature fluid bypass flow control unit (130) for bypassing the cooling hot fluid discharged from the lower dry heat exchanging unit (40b) to the water collecting tank (19) A counterflow type cooling tower and a control method thereof do.
Thus, it is possible to enhance the heat exchange ability by expanding the heat exchange area without increasing the exhaust flow resistance of the dry heat exchanger for reducing the white smoke by heating the exhaust of the saturated moisture vaporizer, and the high temperature fluid flowing in the dry heat exchanger during the wet cooling operation is bypassed The flow resistance of the high temperature fluid generated while passing through the dry heat exchanging portion can be reduced and the power consumption of the high temperature fluid pump can be reduced and a considerable amount of non-resistance exhaust before passing through the dry heat exchanging portion during the wet cooling operation can be bypassed Thereby reducing the flow resistance of the exhaust and reducing the consumption power of the blowing fan. In the dry cooling operation, the cooling high-temperature fluid passing through the dry heat exchanging unit is circulated to the collecting tank to bypass the evaporating and scattering loss And the operation cost can be saved There is provided a high efficiency counterflow type cooling tower for controlling the wet cooling operation, the white smoke reduction operation, the dry cooling operation and the cooling high temperature fluid bypass operation, and a control method thereof.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-efficiency counterflow type cooling tower for reducing white smoke and power,

The present invention relates to a whitening reducing counterflow type cooling tower, in particular, it is possible to heat up a heat exchanging region without increasing the exhaust flow resistance of a dry heat exchanging portion for reducing white smoke by heating the exhaust of a saturated moisture vaporizer, It is possible to bypass the flow resistance of the high temperature fluid generated while passing through the dry heat exchanger by bypassing the high temperature fluid flowing through the dry heat exchanger and to reduce the power consumption of the high temperature fluid pump and to pass the dry heat exchanger It is possible to reduce the flow resistance of the exhaust while reducing the consumption power of the blowing fan and to circulate the cooling high temperature fluid passing through the dry heat exchanger in the dry cooling operation to the collection tank by flowing the large amount of non- A solution corresponding to evaporation and scattering loss generated while passing through the wet heat exchanger Efficient cooling tower which can save the operation cost and can control the wet cooling operation, the white smoke reduction operation, the dry cooling operation and the cooling high-temperature fluid bypass operation efficiently. And a control method thereof.

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 in which cooling air flows in the same direction as a cooling fluid.

The system of the heat exchanging unit includes an open circuit-wet cooling type heat exchanger in which the cooling fluid and the cooling air flow into the fillers to evaporate heat by mutual contact, a closed heat transfer tube A wet type heat exchanger for exchanging heat with cooling fluid (cooling water) and cooling air on an outer surface thereof, a hybrid type heat exchanger for combining an open type heat exchanger and a closed type heat exchanger, And a close circuit-dry cooling type heat exchanger for circulating the heat in the air while flowing cooling air on the outer surface of the closed heat transfer tube through which the fluid to be cooled flows.

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 the waste heat at the lowest cost and contributes to the conservation of water resources through the reuse of the water. On the other hand, the cooling tower can be used as a heat source for the drift and the 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 operation 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, as the amount of water contained in the exhaust gas decreases, the visible effect of white smoke can be reduced in proportion to the amount of white smoke (Plume or White smoke) generated through the exhaust gas discharged through the exhaust port of the cooling tower, 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. If the white smoke reducing condition is further strengthened in the cooling tower using the white smoke reducing means, And the cost of operation (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, while the heating energy cost does not occur due to the white smoke reduction operation, a separate heating source of heating at a higher temperature (60 ° C or more) Since the heat exchanging unit (dry heat exchanging unit) must be constructed larger than the white smoke reducing means, 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 type.

The exhaust of the saturated moisture vaporizer through the wet heat exchanger is passed through a dry heat exchanger which uses either steam, hot water or electricity as a heat source to heat and simultaneously reduce the humidity while discharging the exhaust of low humidity to reduce white smoke. In the abatement 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 path (air only flow) and a wet air path (cooling fluid and air flow) partitioned by a filler are constituted so as to flow from a high temperature fluid flowing through a dry air passage to 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, but a separate dry air passage must be formed in the cooling heat exchanger (filler), the volume of the wet cooling heat exchanger and the cooling tower of the same capacity is significantly increased in volume of the dry air passage, The cost of the cooling tower is increased, and 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 as a recently developed white smoke reducing means different from a conventional heating type white smoke reduction cooling tower, A cooling condensation type plume abatement means for separating the moisture contained in the high-temperature exhaust by cooling and condensing the exhaust air while allowing the exhaust and the low-temperature outside air to circulate,

 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 cost increase and the beauty of the cooling tower can be damaged by the increase of the supply mechanism and the strengthening of the structure.

14 is a schematic side cross-sectional view of a conventional white smoke reduction cooling tower (Patent Document 1).

Hereinafter, it will be referred to as " known technology 1 ".

As shown in FIG. 2 of the prior art 1, a casing 10 for forming a heat exchange zone, an air supply zone 13 and an exhaust zone 14; A feed mechanism (11) formed on the side of the casing (10) in alignment with the air supply area (13); An exhaust port 17 formed at the center of the upper portion of the casing 10; A wet heat exchanger (20b) disposed in the heat exchange zone, wherein the hot fluid and the air flow to each other and perform cooling heat exchange; An eliminator 25 disposed at an upper portion of the wet heat exchanging unit 20b and recovering water droplets scattered; A distribution main body disposed at the upper portion of the wet heat exchanging portion 20b and sprinkling a high temperature fluid and having a high temperature fluid inlet port, a plurality of distribution pipes connected to the distribution main pipe, and a plurality of spray nozzles provided in the distribution pipe A water spraying portion 30a; A dry heat exchanger (40c) disposed in the exhaust area (14) to reduce white smoke; A high temperature fluid supply pipe 71a for supplying a high temperature fluid to the dry heat exchange unit 40c and a cooling high temperature fluid discharge pipe 72a for discharging a high temperature fluid from the dry heat exchange unit 40c; A blowing fan part (60a) for introducing the air supply through the air supply mechanism (11) and discharging the heat exchanged air to the outside through the exhaust port (17); And a white smoke reduction cooling tower 2a having a water collecting tank 19 disposed at a lower portion of the wet heat exchange unit 20b and having a cooling fluid outlet 18 in one area.

In the white smoke reduction cooling tower 2a of the known art 1, the high-temperature fluid that has absorbed the pyrolysis heat from the refrigerant heat exchanger flows into the dry heat exchange section 40c through the high temperature fluid pump, and the high temperature fluid flowing into the dry heat exchange section 40c The fluid is cooled through heat heat exchange, which reduces the humidity of the exhaust of the saturating moisture evacuator that flows through the wet heat exchanger 20b after completion of the heat exchange, and the cooled high temperature fluid passes through the wet heat exchanger 20b, ), And the cooling fluid is supplied to the refrigerant heat exchanger, and this operation is repeated.

Next, the white smoke reduction cooling tower 2a of the known art 1 operates the wet heat exchange unit 20b by dry cooling under the atmospheric conditions in which the white smoke reduction operation is not required and the wet cooling operation or the low temperature atmosphere, Since the high temperature fluid always flows to the dry heat exchanger 40c, which is the heat exchanger for the white smoke reduction operation, unnecessary high temperature fluid flow resistance is generated even in the operation of the unnecessary cooling tower, so that the consumption power of the high temperature fluid pump can be wasted, Since the exhaust gas always flows to the dry heat exchanging part 40c at any time during the dry cooling operation, unnecessary flow resistance of the exhaust gas is generated to increase consumption power of the blowing fan.

15 is a schematic side cross-sectional view of another conventional white smoke reduction cooling tower (Patent Document 2).

Hereinafter, it is referred to as " known technology 2 ".

As shown in FIG. 12 of the prior art 1,

A casing (10) forming a heat exchange zone and an exhaust zone (14); A feed mechanism (11) formed at a lower portion and an upper portion of one side of the casing (10); An exhaust port 17 formed at an upper end of the casing 10; A closed type wet heat exchange unit 20b disposed in the heat exchange area and disposed above the open type wet heat exchange unit 20a and the open type wet heat exchange unit 20a, An eliminator 25 provided on the exhaust side of the open type wet heat exchange unit 20a and the closed type wet heat exchange unit 20b; A water spraying portion 30a disposed above the hermetically sealed wet heat exchanging portion 20b and sprinkling the high temperature fluid and having a plurality of spraying nozzles 35; A dry heat exchanger (40c) disposed at an upper end of the casing (10) to reduce white smoke and having a hot fluid inlet header (44) and a hot fluid outlet header (46); A high-temperature fluid supply pipe 71a and a high-temperature fluid supply pipe 71c for supplying a high-temperature fluid to the dry heat exchange unit 40c; A cooling high temperature fluid outflow pipe 72a and a cooling high temperature fluid outflow pipe 72c for discharging the high temperature fluid from the dry heat exchanging unit 40c to the water spraying unit 30a; A blowing fan part (60a) for introducing the air supply through the air supply mechanism (11) and discharging the heat exchanged air to the outside through the exhaust port (17); A whitening reduction cooling tower 2b having a water collecting tank 19 disposed below the wet heat exchanging units 20a and 20b and having a cooling fluid outlet in one area is provided.

In the white smoke reduction cooling tower 2b of the known art 1, the hot fluid absorbing the pyrolysis from the cooling load facility (apparatus) flows into the dry heat exchanger 40c through the high temperature fluid pump, and the dry heat exchanger 40c The flowing hot fluid is cooled through heat heat exchange, which reduces the humidity of the exhaust of the saturated moisture vaporizer after the heat exchange through the wet heat exchangers 20a, 20b and flows, and the cooled hot fluid passes through the wet heat exchanger 20b The cooling fluid that has flowed and forms a heat exchange is supplied to the cooling load facility (apparatus), and this operation is repeated.

Next, as in the case of the white smoke reduction cooling tower 2a of the prior art 1, the white smoke reduction cooling tower 2b of the known art 2 is subjected to a wet cooling operation in an atmospheric condition in which white smoke reduction operation is not required, The high temperature fluid is always flown to the dry heat exchanger 40c as the heat exchanger for white smoke reduction operation even in the operation of the cooling tower in which the white smoke reduction operation is unnecessary by operating the heat exchanger 20b by dry cooling, The power consumption of the pump can be wasted and the exhaust gas always flows to the dry heat exchanging part 40c at any time during the wet cooling operation and the dry cooling operation so that unnecessary flow resistance is generated to increase the power consumption of the blowing fan There is a problem.

Patent Document 1: JP-A-6-323761 (November 25, 1994) / Drawing 2 Patent Document 2: United States Patent Publication No. US 6,142,219 (November 11, 2000) / Drawing 6

The present invention solves the problems of the above-described known technology (prior art) and also realizes a technical structure and a synergistic effect that can not be predicted by the known technology,

It is an object of the present invention to improve the heat exchange capacity by expanding the heat exchange area without increasing the exhaust flow resistance of the dry heat exchanger for reducing the white smoke by heating the exhaust of the saturated moisture vaporizer,

It is possible to bypass the flow resistance of the high temperature fluid generated while passing through the dry heat exchanger by bypassing the high temperature fluid flowing through the dry heat exchanger in the wet cooling operation and to reduce the power consumption of the high temperature fluid pump,

It is possible to reduce the flow resistance of the exhaust gas while simultaneously reducing the consumption power of the blowing fan by flowing a considerable amount of non-effective exhaust gas before passing through the dry heat exchanger in the wet cooling operation,

In the dry cooling operation, the cooling high-temperature fluid passing through the dry heat exchanging unit can be circulated to the collecting tank, thereby saving water equivalent to evaporation and scattering loss generated while passing through the wet heat exchanging unit.

You can save on running costs,

The present invention provides a highly efficient counterflow type cooling tower capable of effectively controlling wet cooling operation, white smoke reduction operation, dry cooling operation and cooling high temperature fluid bypass operation, and a control method thereof.

According to an aspect of the present invention, there is provided a heat exchanger comprising: a casing defining a heat exchange region, an air supply region and an exhaust region; A feed mechanism (11) formed on the side of the casing (10) in alignment with the air supply area (13); An exhaust port 17 formed at either the center or the upper end of the upper portion of the casing 10; A wet heat exchanger (20a, 20b) arranged in the heat exchange zone for cooling and heat-exchanging the hot fluid and the air; An eliminator 25 disposed above the wet heat exchangers 20a and 20b for recovering water droplets to be scattered; A distribution main pipe 32 disposed above the wet heat exchangers 20a and 20b to discharge a high temperature fluid and having a high temperature fluid inlet 31a, a plurality of distribution pipes 33 connected to the distribution main pipe 32, A water spraying part 30a composed of a plurality of water spraying nozzles 35 provided in the distribution pipe 33; A heat transfer pipe 41 which is disposed at any one of the exhaust area 14 or the upper end of the casing 10 to reduce white smoke and forms a plurality of heat transfer fins and a heat transfer pipe 41 to which one end of the heat transfer pipe 41 is connected, A high temperature fluid inlet header 44 having a high temperature fluid inlet 43 and a high temperature fluid outlet header 46 connected to the other end of the heat transfer tube 41 and having a high temperature fluid outlet 45 in one region, (40c) having a frame (42) for receiving and supporting the heat exchanger (41); A high temperature fluid supply pipe 71a for supplying a high temperature fluid to the dry heat exchange unit 40c and a cooling high temperature fluid discharge pipe 72a for discharging a high temperature fluid from the dry heat exchange unit 40c; A blowing fan unit for introducing the air supply through the air supply mechanism (11) and exhausting the heat exchanged air to the outside through the exhaust port (17); And a water collecting tank (19) disposed below the wet heat exchanging units (20a, 20b) and provided with cooling fluid outlets (18) in one region,

The dry heat exchanging part 40c is divided into an upper dry heat exchanging part 40a and a lower dry heat exchanging part 40b which is arranged stepwise at a predetermined height from the lower part of the upper dry heat exchanging part 40a;

Is formed between the side of the upper dry heat exchanging part 40a in the direction of the lower dry heat exchanging part 40b and the upper surface of the lower dry heat exchanging part 40b and is disposed between the upper dry heat exchanging part 40a and the lower dry heat exchanging part 40b An exhaust bypass flow channel 16 for bypassing the non-resistance exhaust that has not passed through the exhaust bypass flow channel 16;

Is provided between one side lower surface of the upper dry heat exchanging portion (40a) and one upper surface of the lower dry heat exchanging portion (40b) facing the side surface of the exhaust bypass flow channel (16) A bypass exhaust opening / closing unit having an exhaust opening / closing member and an opening / closing member driver for opening / closing a bypass flow of the non-resistance exhaust gas toward the exhaust opening /

(ON) and a stop (OFF) control signal of a high temperature fluid pump 180 switch for supplying a high temperature fluid to the water spraying portion 30a, the upper dry heat exchanging portion 40a and the lower dry heat exchanging portion 40b, A wet cooling operation mode 122 for controlling the high temperature fluid cooling of the wet heat exchanger 20a and a wet cooling operation mode 122 for controlling the cooling of the upper dry heat exchanger 40a and the lower dry heat exchanger 40b And a dry cooling operation mode 124 for controlling high temperature fluid cooling of the upper dry heat exchanging unit 40a and the lower dry heat exchanging unit 40b, And a control unit (100) having a cooling high temperature fluid bypass flow control unit (130) for bypassing the cooling high temperature fluid flowing out from the upper dry heat exchanging unit (40a) and the lower dry heat exchanging unit (40b) to the water collecting tank (19) High efficiency countermeasures to reduce power and white smoke Type cooling tower.

Here, the lower width of the exhaust bypass flow channel 16 preferably corresponds to the upper surface width of the lower dry heat exchanger 40b.

And a sump for collecting and discharging the cooling fluid between the cooling fluid outlet 18 and the water collecting tank 19.

Although not shown in the drawing, the water collecting tank 19 is provided with a normal configuration such as a replenishing water supply unit, a drainage unit, and a filtration unit.

The heat transfer pipe 41 is preferably a single serpentine structure or a double serpentine structure continuous with a curved tube portion ("U" shape) and an straight tube portion, However, a plurality of straight pipe sections coupled between a pair of prismatic headers having partition walls partitioning the flow path to reduce the flow resistance of the fluid may be formed in a single row or a plurality of columns.

The heat transfer pipe 41 may be a copper tube, but it may be a stainless steel pipe or a hot-dip galvanized steel pipe.

It is preferable that the heat conductive fins 34a are internally coated and applied so as to prevent the heat conductive fins mounted on the heat exchanger coils applied to the air conditioner or the condenser from being corroded in a high temperature cooling tower environment. And a heat transfer fin having a different shape and structure such as an aero fin made of a corrosion-resistant material formed to be in close contact with the outer surface of the casing.

The upper dry heat exchanging unit 40a and the lower dry heat exchanging unit 40b may be configured as a single unit and are easily configured but may be divided into a plurality of units according to the size of the cooling tower.

One of the upper dry heat exchanging part 40a and the lower dry heat exchanging part 40b is provided as a means for reducing the heat exchange capacity of the dry heat exchangers 40a and 40b and the exhaust flow resistance, 40a and 40b, and a heat exchange area expanding part 48 for expanding the heat exchange and the exhaust flow area so as to overlap with each other in the direction of one of the two sides.

The width of the expansion area of the heat exchange area extension part 48 may be extended to within 30% of the width of the exhaust bypass flow channel 16 in order to minimize the flatness of the exhaust flow generated due to the interference of the exhaust flow space desirable.

The bypass exhaust opening / closing portion includes an exhaust opening / closing member 51a constituted by a damper having a plurality of opening / closing blades, a rotating shaft for opening and closing the exhaust opening / closing member 51a by rotating the opening / closing member 51a, and an opening / closing member driver 51a for driving the rotating shaft The bypass exhaust opening / closing unit 50a,

An exhaust opening / closing member 51b having one opening / closing plate for further reducing the flow resistance of the exhaust gas, a rotating shaft for opening and closing the exhaust opening / closing member 51b by rotating the exhaust opening / closing member 51b, and an opening / closing member driver 51a for driving the rotating shaft A bypass exhaust opening / closing unit 50b,

An exhaust opening / closing member 51c composed of a rolling shutter and an opening / closing motive member 52b for lifting and lowering the exhaust opening / closing member 51c so as to achieve a full opening that further reduces the flow resistance of the exhaust gas, The bypass exhaust opening / closing unit 50c.

The blowing fan unit includes a fan cylinder 61, an axial blowing fan 63a accommodated in the fan cylinder 61, a motor 65 for driving the blowing fan 63a, And a suction-ventilation-type blowing fan portion 60a having a suction-

 In the pressurized ventilated counterflow type cooling tower structure, a fan housing 64 disposed through partition walls 15 formed inside the air supply mechanism 11, a centrifugal blower fan 63b accommodated in the fan housing 64, And a press-in ventilating fan unit 60b having a motor 65 for driving the blower fan 63b.

The driving parts of the blowing fans 63a and 63b are preferably belt driven, but they can be applied to a gear reducer drive type or a direct drive type .

It is preferable that the fan cylinder 61 is an exposed fan cylinder 62 which is exposed to the upper side of the exhaust port 17. In order to shorten the installation height of the cooling tower and improve the appearance, So that it is possible to construct a flush type fan cylinder which is installed so as to be embedded in the fan cylinder.

The high-temperature fluid supply pipe 71a is opened (ON) when the whitening reduction operation mode 123 or the dry cooling operation mode 124 is turned on, is closed (OFF) when the hot- In the cooling operation mode 122, the high-temperature fluid is not blocked by the upper dry heat exchanger 40a and the lower dry heat exchanger 40b, A high temperature fluid inlet 31b branched from the high temperature fluid supply pipe 71a and further included at one end of the distribution main pipe 32, And a high-temperature fluid supply pipe 71b connected to the high-temperature fluid supply pipe 71b.

The high-temperature fluid supply pipe 71b is closed when the on-off control valve 81 is turned on in conjunction with the on-off control valve 81 so that the on-off control valve 81 is closed, Closing control valve 82 that is opened to supply the high-temperature fluid to the water spraying unit 30a.

The high temperature fluid inlet 31a is provided with a cooling high temperature fluid to the water spraying part 30a and prevents the cooling high temperature fluid from flowing back to the spraying part 30a when the cooling high temperature fluid is bypassed to the water collecting tank 19. [ And a cooling high temperature fluid inflow pipe 72b branched from the cooling high temperature fluid outflow pipe 72a at a point lower than the water spraying portion 30a.

The high temperature fluid is cooled between the cooling high temperature fluid outflow pipe 72a and the water collecting tank 19 by the upper dry heat exchanging unit 40a and the lower dry heat exchanging unit 40b, The cooling high-temperature fluid bypassing flow which bypasses the water collecting tank 19 so that the cooling high-temperature fluid cooled when the operation mode is switched to the cooling operation mode 124 is not supplied to the water spraying unit 30a and the wet heat exchanging unit 20a And the cooling high temperature fluid bypass drain pipe 72d may further include an opening / closing control valve 83 for opening / closing the bypass drain of the cooling high temperature fluid.

As a means for preventing the cooling high-temperature fluid flowing into the water collecting tank 19 through the cooling high-temperature fluid bypassing pipe 72d from deviating to the outside of the water collecting tank 19 or generating a severe wave generated on the water surface of the water collecting tank 19 And a fluid dispersing member (76) for dispersing the cooling fluid while spraying the cooling fluid downward.

The reduction amount of the exhaust flow resistance according to the configurations of the heat exchange expanding portion 18, the exhaust bypassing flow channel 16 and the bypass exhaust opening / closing portions 50a, 50b, 50 described above is applied to the design of the cooling tower, It is possible to provide a cooling tower having a blowing fan portion of the present invention.

(Closed) and closed (closed) by the opening / closing control valve 81 so as not to unnecessarily flow the high temperature fluid to the upper dry heat exchanging unit 40a and the lower dry heat exchanging unit 40b in the above described wet cooling operation mode 122 In order to reduce the flow resistance and reduce the power consumption of the high temperature fluid pump 180,

Fluid mechanics decreases the flow resistance (head) at the rated head of the pump and increases the flow rate of the fluid corresponding to the decrease.

Therefore, if the variable flow rate operation of the pump is not followed in accordance with the reduction of the flow resistance, the effect of reducing the consumption power can be lowered. Therefore, the variable speed control system (VVVF Inverter: Variable Voltage Variable Frequency Inverter) desirable.

The exhaust passing through the upper dry heat exchanging part 40a and the lower dry heat exchanging part 40b during the wet cooling operation in the exhaust after the heat exchange from the above-described wet heat exchanging part 20a to the exhaust port, And the resistance of the fluid can be reduced due to the flow of the fluid through the flow path that receives less resistance so that no resistance is generated before passing through the upper dry heat exchanging part 40a and the lower dry heat exchanging part 40b, The amount of exhaust flowing into the open exhaust bypass flow channel 16 can be greatly increased and the bypass exhaust flowing into the exhaust bypass flow channel 16 can be a noiseless exhaust.

The control unit 100 includes a control value setting unit 101 for setting or controlling a control value, a display unit 102 for indicating a control state, a control signal input unit 103 for inputting detection and contact signals, A control signal output unit 104 for outputting a signal to an operation unit, an alarm unit 105 for alarming an abnormal operation and a failure, a remote control signal input / output unit 106 for remotely controlling through a wired and wireless communication network, An external storage unit 107 and a power supply unit 108 for supplying control power.

The control unit 100 is also connected to the control unit 100 so that the operation of the interlocking control unit 110, the wet cooling operation mode 122, the whitening reduction operation mode 123, the dry cooling operation mode 124 and the cooling fluid bypass control unit 130 And a remote control unit 140 for controlling the remote control of the remote PC 141 via the Internet and the wireless communication terminal 142 of the remote PC 141 Do.

Next, in a control method of a high-efficiency counterflow type cooling tower for reducing white smoke and power,

The control method includes an interlocking operation step of the interlocking control unit 110;

Selecting one of the wet cooling operation mode 122, the white smoke reduction operation mode 123 and the dry cooling operation mode 124 according to the control signal for switching the operation mode;

And a cooling high temperature fluid bypass flow control operation of the cooling high temperature fluid bypass flow controller (130).

The interlocking controller 110 determines an ON contact signal of the input high temperature fluid pump switch 111 and applies the signal to the control signal ON in operation S111. The control signal ON is output to the blower fan motor 65 switch 112 and the operation mode control operation unit 121 so that the blower fan motor 65 switch 112 and the operation mode control operation unit 121 are operated, (S112, S113); Determining (114) an operation stop signal (OFF) of the inputted hot fluid pump (180) switch (111) and applying it to the control signal (OFF); And outputs the applied control signal (OFF) to the blower fan motor 65 switch 112 and the operation mode control operation unit 121 to output the blower fan motor 65 switch 112 and the operation mode control operation unit 121, (S115, S116) of stopping (stopping) the operation of the vehicle.

In the wet cooling operation mode 122, the wet cooling operation temperature detection signal t1 input from the cooling fluid temperature detector 84 is compared with the wet cooling operation setting control value and is applied as the control signal ON Step S121; A step S122 of outputting the applied control signal ON to turn on the wet cooling operation mode 122; The ON operation of the exhaust bypass flow path switching parts 50a, 50b and 50c, the opening of the high temperature fluid supply ON / OFF control valve 82, the ON operation of the high temperature fluid supply ON / Closing the fluid supply opening / closing control valve 81 (S123, S124, S125); (S126) comparing the wet cooling operation temperature detection signal (t1) inputted from the cooling fluid temperature detector (85) with the set control value of the wet cooling operation stop and applying it as a control signal (OFF); (S127) of outputting the applied control signal (OFF) to stop the operation of the wet cooling operation mode 122 (OFF); Closing of the exhaust bypass flow path open / close portions 50a, 50b and 50c, closing of the high temperature fluid supply open / close control valve 82 (OFF) in conjunction with the step of stopping the wet cooling operation mode 122, (S128, S129, S131) of opening the high temperature fluid supply opening / closing control valve 81 (S128).

The white smoke reduction operation mode 123 is a mode in which the white smoke reduction operation temperature detection signal t2 inputted from the outside air temperature detector 85 and the white smoke reduction operation detection humidity h1 inputted from the ambient air humidity detector 87 are converted into white smoke reduction operation (S132, S133) comparing the set control value with a control signal (ON); (S134) of outputting the applied control signal (ON) to turn on the white smoke reduction operation mode 123 (ON); (S135) of determining the operation (ON) signal of the white smoke reduction operation mode 123 and applying it to the control signal (ON); Closing of the exhaust bypass flow path switching portions 50a, 50b and 50c and opening of the high temperature fluid supply opening and closing control valve 81 in conjunction with the operation (ON) step control signal of the white smoke reducing operation mode 123, (S136, S137, S138) of closing the high temperature fluid supply opening / closing control valve 82; The white smoke reduction operation temperature detection signal t2 inputted from the outside air temperature detector 85 and the white smoke reduction operation detection humidity h1 inputted from the outdoor air humidity detector 87 are compared with the set control value of the white smoke reduction operation stop (S139, S141) of applying the control signal (OFF); (S142) of outputting the applied control signal (OFF) to stop the operation of the whitening reduction operation mode 123 (OFF); (S143) of determining the operation stop (ON) signal of the white smoke reduction operation mode 123 and applying the signal to the control signal (OFF); Closing of the exhaust bypass flow path switching portions 50a, 50b and 50c and closing of the high temperature fluid supply opening and closing control valve 81 in conjunction with the operation stop (OFF) step control signal of the white smoke reducing operation mode 123 (S144, S145, S146) of opening the high-temperature fluid supply opening / closing control valve 1 (step S146).

The dry cooling operation mode 124 compares the dry cooling operation temperature detection signal t3 inputted from the outside air temperature detector 85 with the dry cooling operation setting control value and applies it to the control signal ON S147); A step (S148) of outputting the applied control signal (ON) and operating (ON) the dry cooling operation mode 124; Closing of the high temperature fluid supply opening and closing control valve 81, opening of the cooling high temperature fluid detouring flow opening and closing control valve 83 in conjunction with the operation (ON) of the dry cooling operation mode 124, (S149, S151, S152, and S153) of closing the bypass flow path open / close portions 50a, 50b, and 50c and closing the high temperature fluid supply open / close control valve 82; (S154) comparing the dry cooling operation temperature detection signal (t3) input from the outdoor temperature detector (85) with the dry cooling operation stop setting control value and applying it as a control signal (OFF); A step S155 of outputting the applied control signal OFF to stop the operation of the dry cooling operation mode 124; Closing of the high temperature fluid supply opening / closing control valve 82, closing of the cooling high temperature fluid bypass flow opening / closing control valve 83 in conjunction with the operation stopping (OFF) of the dry cooling operation mode 124, (S156, S157, S158, and S159) of closing the high temperature fluid supply opening / closing control valve 81 and opening the exhaust bypass flow opening / closing portions 50a, 50b and 50c Do.

The cooling high temperature fluid detour flow control unit 130 compares the cooling high temperature fluid detour flow temperature detection signal t4 inputted from the cooling high temperature fluid temperature detector 86 with the cooling high temperature fluid detour setting control value, A step S161 of applying a signal ON; (S162) of outputting the applied control signal (ON) and opening (ON) the cooling high temperature fluid bypass flow control valve 83; (S163) comparing the cooling high temperature fluid detour temperature detection signal (t4) inputted from the cooling high temperature fluid temperature detector (86) with the set control value of the cooling high temperature fluid detour stop and applying it as a control signal (OFF) ; (S164) of outputting the applied control signal (OFF) and closing the cooling high temperature fluid bypass flow control valve 83 (OFF).

According to the present invention, heat exchange capacity can be improved by expanding the heat exchange area without increasing the exhaust flow resistance of the dry heat exchanger for reducing the white smoke by heating the exhaust of the saturated moisture vaporizer,

It is possible to bypass the flow resistance of the high temperature fluid generated while passing through the dry heat exchanger by bypassing the high temperature fluid flowing through the dry heat exchanger in the wet cooling operation and to reduce the power consumption of the high temperature fluid pump,

It is possible to reduce the flow resistance of the exhaust gas while simultaneously reducing the consumption power of the blowing fan by flowing a considerable amount of non-effective exhaust gas before passing through the dry heat exchanger in the wet cooling operation,

In the dry cooling operation, the cooling high-temperature fluid passing through the dry heat exchanging unit can be circulated to the collecting tank, thereby saving water equivalent to evaporation and scattering loss generated while passing through the wet heat exchanging unit.

You can save on running costs,

It is possible to provide a highly efficient counterflow type cooling tower capable of efficiently controlling the wet cooling operation, the white smoke reduction operation, the dry cooling operation and the cooling high temperature fluid bypass operation, and the control method thereof.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic cross-sectional side view showing a high-efficiency counterflow type cooling tower and a wet cooling operation structure for reducing white smoke and power according to a first embodiment of the present invention;
FIG. 2 is a schematic vertical cross-sectional view of a high-efficiency counterflow type cooling tower for reducing the white smoke and power of FIG. 1;
FIG. 3 is a schematic side cross-sectional view showing a white smoke reduction operation structure according to the first embodiment of the present invention,
4 is a schematic block diagram of a controller of a high-efficiency counterflow type cooling tower for reducing power of white smoke and power according to the first embodiment of the present invention,
5 is a schematic configuration diagram of a controller of a high efficiency counterflow type cooling tower for reducing power of white smoke and power according to the first embodiment of the present invention,
6A to 6C are schematic flowcharts showing control procedures of a control unit according to a control method of a high-efficiency counterflow type cooling tower for reducing power of white smoke and power according to the first embodiment of the present invention,
7 is a schematic side cross-sectional view showing a high efficiency counterflow type cooling tower and a wet cooling operation structure for reducing white smoke and power according to a second embodiment of the present invention,
8 is a schematic side cross-sectional view showing the structure of the white smoke reduction operation according to the second embodiment of the present invention,
FIG. 9 is a schematic cross-sectional side view showing a high-efficiency counterflow type cooling tower and a wet cooling operation structure for reducing white smoke and power according to a third embodiment of the present invention;
FIG. 10 is a schematic cross-sectional side view showing the structure of the white smoke reduction operation according to the third embodiment of the present invention,
11 is a schematic side cross-sectional view showing a high-efficiency counterflow type cooling tower and a wet cooling operation structure for reducing power of white smoke and power according to a fourth embodiment of the present invention,
Fig. 12 is a schematic vertical cross-sectional view of a high-efficiency counterflow type cooling tower for reducing the white smoke and power of Fig. 11;
FIG. 13 is a schematic side cross-sectional view showing a white smoke reduction operation structure according to a fourth embodiment of the present invention,
14 is a schematic side cross-sectional view of a conventional white smoke reduction cooling tower,
15 is a schematic side cross-sectional view of another conventional white smoke reduction cooling tower.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a high-efficiency counterflow type cooling tower and a control method thereof for reducing white smoke and power according to the present invention will be described in detail with reference to the accompanying drawings.

Before describing the present invention, a detailed description of the structure and operation of the prior art that may obscure the gist of the present invention will be omitted.

In the following description of the present invention, the same reference numerals are used to designate the same or similar components, and the description will be made only of the components that are different from those of the first embodiment.

FIG. 1 is a schematic side cross-sectional view showing a high efficiency counterflow type cooling tower and a wet cooling operation structure for reducing white smoke and power according to the first embodiment of the present invention. FIG. 2 is a cross- FIG. 3 is a schematic side cross-sectional view showing a white smoke reduction operation structure according to the first embodiment of the present invention, and FIG. 4 is a cross-sectional view showing a white smoke and power reduction according to the first embodiment of the present invention FIG. 5 is a schematic block diagram of a controller of a high-efficiency counterflow type cooling tower for reducing white smoke and power according to the first embodiment of the present invention, and FIGS. 6 FIG. 6C is a schematic flowchart illustrating a control operation of the control unit according to the control method of the high-efficiency counterflow type cooling tower for reducing the white smoke and the power according to the first embodiment of the present invention. As shown in these figures, the cooling tower 1a of the high-efficiency counterflow type for reducing the power of white smoke and power according to the first embodiment of the present invention

A casing (10) forming a heat exchange zone, an air supply zone (13) and an exhaust zone (14);

A feed mechanism (11) formed on the side of the casing (10) in alignment with the air supply area (13);

An exhaust port 17 formed at the center of the upper portion of the casing 10;

A wet heat exchanger (20a) arranged in the heat exchange zone and interposed between the hot fluid and the air for cooling heat exchange;

An eliminator 25 disposed above the wet heat exchangers 20a and 20b for recovering water droplets to be scattered;

A distribution main pipe 32 disposed above the wet heat exchanging part 20a and sprinkling a high temperature fluid and having hot fluid inflow ports 31a and 31b at both ends thereof; a plurality of distribution pipes 32 connected to the distribution main pipe 32; A water spraying portion 30a formed of a plurality of water spray nozzles 35 provided in the distribution pipe 33;

A water collecting tank 19 disposed below the wet heat exchanging unit 20a and having a cooling fluid outlet 18 in one region;

A heat transfer pipe 41 disposed in the exhaust region 14 for reducing white smoke and forming a plurality of heat transfer fins and a high temperature fluid inlet 43 connected to one end of the heat transfer pipe 41 and having a high temperature fluid inlet 43 A high temperature fluid outflow header 46 to which a fluid inlet header 44 is connected and the other end of the heat transfer pipe 41 is connected and a high temperature fluid outlet 45 is provided in one region, An upper dry heat exchanging part 40a which is divided and arranged in three sets with the heat exchanging part 40a;

A heat transfer pipe 41 which is arranged stepwise at a predetermined height from a lower portion of the upper dry heat exchanging unit 40a and forms a plurality of heat transfer fins, a heat transfer pipe 41 connected to one end of the heat transfer pipe 41, A high temperature fluid inflow header 46 having a high temperature fluid inflow header 43 having a high temperature fluid inlet header 44 and a high temperature fluid inflow header 45 connected to one end of the heat transfer tube 41, A bottom dry heat exchanging part 40b divided into two groups having a frame 42 for receiving and supporting;

(40a) in the direction of the lower dry heat exchanging part (40b) and the upper surface of each of the two lower dry heat exchanging parts (40b) in the direction of the lower dry heat exchanging part (40b) Two exhaust bypass flow channels 16 for bypassing the non-resistance exhaust that has not passed through the portion 40b;

Is provided between the lower surface of one side of the upper dry heat exchanging portion (40a) and the upper surface of one side of the dry heat exchanging portion (40b) facing the side surface of the exhaust bypass flow channel (16) An exhaust opening / closing member 51a composed of a damper having a plurality of opening / closing blades for opening / closing the bypass flow of the non-resistance exhaust toward the exhaust opening / closing member 51a, a rotating shaft for opening / closing the exhaust opening / closing member 51a, A bypass exhaust opening / closing part 50a which is composed of a bypass valve

An axial flow blowing fan 63a accommodated in the fan cylinder 61 and a motor 65 for driving the blowing fan 63a so as to communicate with the exhaust port 17, A suction-ventilation-type blowing fan portion 60a having a suction-ventilation-type blowing-fan portion 60a;

A high temperature fluid supply pipe 71a and a high temperature fluid supply pipe 71c which supply a high temperature fluid to the upper dry heat exchanging unit 40a and the lower dry heat exchanging unit 40b and have a high temperature fluid inlet port at one end thereof, A cooling high temperature fluid discharge pipe 72a and a cooling high temperature fluid supply pipe 72c for discharging cooling high temperature fluid from the lower dry heat exchanging unit 40b and the lower dry heat exchanging unit 40b;

Is provided in the high temperature fluid supply pipe 71a so that the high temperature fluid is prevented from flowing unnecessarily to the upper dry heat exchanging unit 40a and the lower dry heat exchanging unit 40b in the wet cooling operation mode 122, Closing control valve 81 for reducing the power consumption of the high-temperature fluid pump 180 by reducing the amount of power consumed by the high-temperature fluid pump 180;

A high temperature fluid supply pipe 71b branched from the high temperature fluid supply pipe 71a and connected to the high temperature fluid supply port 31b and bypassing the high temperature fluid to the spraying unit 30a;

Closing control valve 81 is closed when the opening / closing control valve 81 is opened in conjunction with the opening / closing control valve 81 provided in the high-temperature fluid supply pipe 71b, An on / off control valve (82) which is opened (ON) so that the high temperature fluid is supplied to the water spraying portion (30a) by being bypassed;

And a cooling high temperature fluid outlet connected to the high temperature fluid inlet port and the cooling high temperature fluid outlet pipe so as to supply cooling high temperature fluid to the water spraying part, A cooling high-temperature fluid inflow pipe (72b) branching from the cooling high-temperature fluid outflow pipe (72a) at a point lower than the water spraying portion (30a) so as to prevent the backflow to the portion (30a)

A cooling operation mode 122 is provided between the cooling high temperature fluid outflow pipe 72a and the water collecting tank 19 and the high temperature fluid is cooled by the upper dry heat exchanging unit 40a and the lower dry heat exchanging unit 40b, The cooling high-temperature fluid which is circulated to the water collecting tank 19 so that the cooled high-temperature fluid cooled when the operation mode is switched to the dry cooling operation mode 124 is flowed to the water collecting unit 30a and the wet heat exchanging unit 20a, Bypass bypass 72d;

An open / close control valve (83) provided in the cooling high temperature fluid bypass flow pipe (72d) for opening and closing a bypass flow of the cooling high temperature fluid;

A maintenance opening / closing valve (73) provided in the cooling hot fluid discharge pipe (72a) to close the upper dry heat exchanging part (40a) and the lower dry heat exchanging part (40b) when the maintenance is completed;

The cooling high temperature fluid flowing into the water collecting tank 19 through the cooling high temperature fluid bypassing pipe 72d is cooled as a means for preventing a severe wave which is generated on the water surface of the water collecting tank 19, And a fluid dispersing member (76) for dispersing the fluid while spraying the fluid downward and located at the inside of the water collecting tank (19), and a high efficiency counterflow type cooling tower (1a) for reducing power of the white smoke and power according to the first embodiment of the present invention ).

Next, as the control means of the high-efficiency counterflow type cooling tower 1a for reducing the white smoke and the power,

A temperature detector 85 provided in the cooling fluid outlet 18 for detecting the temperature of the cooling fluid, a temperature detector 85 for detecting the temperature of the outside air, and a cooling high temperature fluid outlet tube 72a (86) for detecting the temperature of the cooling high-temperature fluid, and a humidity detector (87) provided in the air supply mechanism for detecting the humidity of the outside air.

In accordance with the ON and OFF control signals of the high temperature fluid pump 180 switch for supplying the high temperature fluid to the water spraying portion 30a, the upper dry heat exchanging portion 40a and the lower dry heat exchanging portion 40b, A wet cooling operation mode 122 for controlling the high temperature fluid cooling of the wet heat exchanger 20a and a wet cooling operation mode 122 for controlling the cooling of the upper dry heat exchanger 40a and the lower dry heat exchanger 40b And a dry cooling operation mode 124 for controlling high temperature fluid cooling of the upper dry heat exchanging unit 40a and the lower dry heat exchanging unit 40b, A cooling high temperature fluid bypass flow control unit 130 for bypassing the cooling high temperature fluid flowing out from the upper dry heat exchanging unit 40a and the lower dry heat exchanging unit 40b to the water collecting tank 19, A value setting unit 101, a display unit 102 indicating a control state, A control signal input unit 103 to which a contact signal is input, a control signal output unit 104 to output an applied control signal to the operation unit, an alarm unit 105 to alarm an abnormal operation and a failure, An external storage unit 107 for storing control data externally and a power supply unit 108 for supplying control power; the interlocking control unit 110; the wet cooling operation mode 122; Monitoring and alarming communication of the white smoke reduction operation mode 123, the dry cooling operation mode 124 and the cooling fluid detour flow control section 130 to the Internet and the Internet of the remote PC 141 And a remote controller 140 that allows remote control through the wireless communication terminal 142.

Next, a control method of the high-efficiency counterflow type cooling tower 1a for reducing the white smoke and the power according to the first embodiment of the present invention will be described.

Next, in a control operation method of a high-efficiency counterflow type cooling tower for reducing white smoke and power,

The control method includes an interlocking operation step of the interlocking control unit 110;

Selecting one of the wet cooling operation mode 122, the white smoke reduction operation mode 123 and the dry cooling operation mode 124 according to the control signal for switching the operation mode;

And the cooling high-temperature fluid bypass operation of the cooling high-temperature fluid bypass operation unit 130 is controlled according to a control signal.

In the detailed control method for each control unit and operation mode,

First, the interlocking controller 110 determines (S111) an operation (ON) contact signal of the inputted high temperature fluid pump 180 switch 111 and applies the signal to the control signal ON. The control signal ON is output to the blower fan motor 65 switch 112 and the operation mode control operation unit 121 so that the blower fan motor 65 switch 112 and the operation mode control operation unit 121 are operated, (S112, S113); Determining (114) an operation stop signal (OFF) of the inputted hot fluid pump (180) switch (111) and applying it to the control signal (OFF); And outputs the applied control signal (OFF) to the blower fan motor 65 switch 112 and the operation mode control operation unit 121 to output the blower fan motor 65 switch 112 and the operation mode control operation unit 121, The control of the interlocking control unit 110 is performed by the control method of steps S115 and S116 in which the operation of the interlocking control unit 110 is stopped.

Next, in the wet cooling operation mode 122 in which the start operation mode is started when the operation of the cooling tower is started, the wet cooling operation temperature detection signal t1 inputted from the cooling fluid temperature detector 84 is set to the wet cooling operation setting control value (S121) of comparing and applying the control signal ON; A step S122 of outputting the applied control signal ON to turn on the wet cooling operation mode 122; The ON operation of the exhaust bypass flow path switching parts 50a, 50b and 50c, the opening of the high temperature fluid supply ON / OFF control valve 82, the ON operation of the high temperature fluid supply ON / Closing the fluid supply opening / closing control valve 81 (S123, S124, S125); (S126) comparing the wet cooling operation temperature detection signal (t1) inputted from the cooling fluid temperature detector (85) with the set control value of the wet cooling operation stop and applying it as a control signal (OFF); (S127) of outputting the applied control signal (OFF) to stop the operation of the wet cooling operation mode 122 (OFF); Closing of the exhaust bypass flow path open / close portions 50a, 50b and 50c, closing of the high temperature fluid supply open / close control valve 82 (OFF) in conjunction with the step of stopping the wet cooling operation mode 122, The wet cooling operation mode 122 is controlled by the control method of steps S128, S129, and S131 in which the high temperature fluid supply opening / closing control valve 81 is turned ON.

The white smoke reduction operation mode 123 is a mode in which the white smoke reduction operation temperature detection signal t2 input from the ambient temperature detector 85 and the white smoke reduction operation detection humidity h1 inputted from the ambient air humidity detector 87 are converted into white smoke (S132, S133) of comparing the reduced operation setting control value with the control operation signal ON; (S134) of outputting the applied control signal (ON) to turn on the white smoke reduction operation mode 123 (ON); (S135) of determining the operation (ON) signal of the white smoke reduction operation mode 123 and applying it to the control signal (ON); Closing of the exhaust bypass flow path switching portions 50a, 50b and 50c and opening of the high temperature fluid supply opening and closing control valve 81 in conjunction with the operation (ON) step control signal of the white smoke reducing operation mode 123, (S136, S137, S138) of closing the high temperature fluid supply opening / closing control valve 82; The white smoke reduction operation temperature detection signal t2 inputted from the outside air temperature detector 85 and the white smoke reduction operation detection humidity h1 inputted from the outdoor air humidity detector 87 are compared with the set control value of the white smoke reduction operation stop (S139, S141) of applying the control signal (OFF); (S142) of outputting the applied control signal (OFF) to stop the operation of the whitening reduction operation mode 123 (OFF); (S143) of determining the operation stop (ON) signal of the white smoke reduction operation mode 123 and applying the signal to the control signal (OFF); Closing of the exhaust bypass flow path switching portions 50a, 50b and 50c and closing of the high temperature fluid supply opening and closing control valve 81 in conjunction with the operation stop (OFF) step control signal of the white smoke reducing operation mode 123 , The control of the white smoke reduction operation mode 123 is performed by the control method of steps S144, S145 and S146 of opening the high temperature fluid supply opening and closing control valve 1. [

Next, in the dry cooling operation mode 124, the dry cooling operation temperature detection signal t3 input from the ambient temperature detector 85 is compared with the dry cooling operation setting control value and applied with the control signal ON (S147); A step (S148) of outputting the applied control signal (ON) and operating (ON) the dry cooling operation mode 124; Closing of the high temperature fluid supply opening and closing control valve 81, opening of the cooling high temperature fluid detouring flow opening and closing control valve 83 in conjunction with the operation (ON) of the dry cooling operation mode 124, (S149, S151, S152, and S153) of closing the bypass flow path open / close portions 50a, 50b, and 50c and closing the high temperature fluid supply open / close control valve 82; (S154) comparing the dry cooling operation temperature detection signal (t3) input from the outdoor temperature detector (85) with the dry cooling operation stop setting control value and applying it as a control signal (OFF); A step S155 of outputting the applied control signal OFF to stop the operation of the dry cooling operation mode 124; Closing of the high temperature fluid supply opening / closing control valve 82, closing of the cooling high temperature fluid bypass flow opening / closing control valve 83 in conjunction with the operation stopping (OFF) of the dry cooling operation mode 124, (S156, S157, S158, and S159) in which the high temperature fluid supply control valve 81 is closed and the exhaust bypass flow path switching units 50a, 50b and 50c are opened The mode 124 is controlled.

Next, the cooling high temperature fluid detour flow control unit 130 compares the cooling high temperature fluid detour flow temperature detection signal t4 inputted from the cooling high temperature fluid temperature detector 86 with the cooling high temperature fluid detour setting control value A step S161 of applying the control signal ON; (S162) of outputting the applied control signal (ON) and opening (ON) the cooling high temperature fluid bypass flow control valve 83; Comparing the cooling high temperature fluid bypassing temperature detection signal t4 inputted from the cooling high temperature fluid temperature detector 86 with the setting control value of the cooling high temperature fluid detouring stop and applying the control signal OFF as a control signal S163 ); The control of the cooling high-temperature fluid bypass control unit 130 is controlled by the control method of the step S164 of outputting the applied control signal OFF to close the cooling high-temperature fluid detour control valve 83 .

FIG. 7 is a schematic side cross-sectional view showing a high-efficiency counterflow type cooling tower and a wet cooling operation structure for reducing power of white smoke and power according to a second embodiment of the present invention, and FIG. 8 is a cross- Fig. 2 is a schematic side cross-sectional view showing the structure. As shown in these drawings, the cooling tower 1b of high efficiency counterflow type for reducing power of white smoke and power according to the second embodiment of the present invention is arranged in the exhaust region 14, An upper dry heat exchanger 40a divided into two groups;

A lower dry heat exchanger (40b) disposed stepwise at a predetermined height from a lower portion of the upper dry heat exchanger (40a) and having a heat exchange area expanding part (48) extending a heat exchange area on both sides;

Is formed between the inner side of the upper dry heat exchanging part 40a in the direction of the lower dry heat exchanging part 40b and the upper side of the one lower dry heat exchanging part 40b and the upper dry heat exchanging part 40a and the lower dry heat exchanging part Bypass exhaust flow channel (16) for bypassing the non-resistance exhaust that has not passed through the exhaust bypass flow channel (40b);

An exhaust opening / closing member 51b having one opening / closing plate for opening / closing the exhaust bypassing flow channel 16, a rotating shaft for opening and closing the exhaust opening / closing member 51b by rotating the exhaust opening / closing member 51b, And a high-efficiency counterflow type cooling tower 1b for reducing the power of the white smoke constituting the bypass exhaust opening / closing unit 50b.

Next, the control means and the control method of the high-efficiency counterflow type cooling tower 1a for reducing the white smoke and the power are the same as those of the above-described embodiment, and a description thereof will be omitted.

FIG. 9 is a schematic side cross-sectional view showing a high-efficiency counterflow type cooling tower and a wet cooling operation structure for reducing power of white smoke and power according to the third embodiment of the present invention, and FIG. 10 is a cross- 1 is a schematic side cross-sectional view showing the structure. As shown in these figures, the cooling tower 1c of high efficiency counterflow type for reducing power of white smoke and power according to the third embodiment of the present invention is arranged in the exhaust area 14, An upper dry heat exchanging unit 40a for reducing the temperature of the upper dry heat exchanging unit 40a;

A bottom dry heat exchanger (40b) arranged stepwise at a predetermined height from a lower portion of the upper dry heat exchanger (40a);

Is formed between the inner side of the upper dry heat exchanging part 40a in the direction of the lower dry heat exchanging part 40b and the upper side of the one lower dry heat exchanging part 40b and the upper dry heat exchanging part 40a and the lower dry heat exchanging part Bypass exhaust flow channel (16) for bypassing the non-resistance exhaust that has not passed through the exhaust bypass flow channel (40b);

An exhaust opening / closing member 51c that opens / closes the exhaust bypass flow channel 16 and is formed of a rolling shutter, and a door opening / closing member 52b that lifts and closes the exhaust opening / closing member 51c, And a high-efficiency counterflow type cooling tower 1c for reducing the power of the white smoke constituting the opening / closing part 50c.

Next, the control means and the control method of the high-efficiency counterflow type cooling tower 1c for reducing the white smoke and the power are the same as those of the above-described embodiment, and a description thereof will be omitted.

11 is a schematic cross-sectional side view showing a high-efficiency counterflow type cooling tower and a wet cooling operation structure for reducing white smoke and power according to a fourth embodiment of the present invention. FIG. 12 is a cross- And FIG. 13 is a schematic side cross-sectional view showing the structure of the white smoke reduction operation according to the fourth embodiment of the present invention. As shown in these drawings, the cooling tower 1d of the high efficiency counterflow type for reducing the power of white smoke and power according to the fourth embodiment of the present invention is arranged in the exhaust region 14, An upper dry heat exchanging unit 40a for reducing the temperature of the upper dry heat exchanging unit 40a;

And a heat exchange area expanding part 48 which is arranged at a predetermined height from the lower part of the upper dry heat exchanging part 40a and is extended at a side of the upper dry heat exchanging part 40a in the direction of the upper dry heat exchanging part 40a, A heat exchange unit 40b;

A non-permeable portion (not shown) formed between the inner side of the upper dry heat exchanging portion 40a in the direction of the lower dry heat exchanging portion 40b and the upper surface of the one lower dry heat exchanging portion 40b and passing through the dry heat exchanging portions 40a and 40b One exhaust bypass flow channel 16 for bypassing the exhaust;

An exhaust opening / closing member 51b having one opening / closing plate for opening / closing the exhaust bypassing flow channel 16, a rotating shaft for opening and closing the exhaust opening / closing member 51b by rotating the exhaust opening / closing member 51b, A bypass exhaust opening / closing unit 50b constituted by a bypass valve;

A centrifugal blower fan 63b accommodated in the fan housing 64 and a blower fan 63b driven by the blower fan 63b, And a high efficiency counterflow type cooling tower 1d for reducing the power of the white smoke constituting the press-in ventilation type blowing fan unit 60b having the motor 65 for performing the operation.

Next, the control means and the control method of the high-efficiency counterflow type cooling tower 1d for reducing the white smoke and the power are the same as those of the above-described embodiment, and a description thereof will be omitted.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary 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 their equivalents. do.

The high-efficiency counterflow type cooling tower and its control method for reducing white smoke and power according to the present invention,

The heat exchanging area can be enlarged without increasing the exhaust flow resistance of the dry heat exchanger for reducing the white smoke by heating the exhaust of the saturated moisture vaporizer,

It is possible to bypass the flow resistance of the high temperature fluid generated while passing through the dry heat exchanger by bypassing the high temperature fluid flowing through the dry heat exchanger in the wet cooling operation and to reduce the power consumption of the high temperature fluid pump,

It is possible to reduce the flow resistance of the exhaust gas while simultaneously reducing the consumption power of the blowing fan by flowing a considerable amount of non-effective exhaust gas before passing through the dry heat exchanger in the wet cooling operation,

In the dry cooling operation, the cooling high-temperature fluid passing through the dry heat exchanging unit can be circulated to the collecting tank, thereby saving water equivalent to evaporation and scattering loss generated while passing through the wet heat exchanging unit.

You can save on running costs,

There is an industrial advantage because it can efficiently control the wet cooling operation, the white smoke reduction operation, the dry cooling operation and the cooling high temperature fluid bypass flow operation.

1a, 1b, 1c, 1d, 2a, 2b: cooling tower 10: casing
11: Feed mechanism 12: Louver
13: supply region 14: exhaust region (plenum)
15: partition wall 16: exhaust bypass flow channel
17: exhaust port 18: cooling fluid outlet
19: water collecting tank 20a, 20b: wet heat exchanging unit
25: Eliminator 30a: Sprinkler
31a, 31b, 43, 70: hot fluid inlet 32:
33: Distribution pipe 35: Sprinkler nozzle
40a: upper dry heat exchanging part 40b: lower dry heat exchanging part
40c: dry heat exchanger 41: heat transfer pipe
42: Frame 44: High temperature fluid inlet header
45: high temperature fluid outlet 46: high temperature fluid outlet header
48: Heat exchange area extension part 49: Exposure header part
50a, 50b, 50c: bypass exhaust opening / closing portions 51a, 51b, 51c: exhaust opening /
52a, 52b: opening and closing member drivers 60a, 60b:
61: fan cylinder 62: fan housing
63a, 63b: blower fan 65: motor
71a, 71b: high temperature fluid supply pipe 71c: high temperature fluid supply pipe
72a: cooling high-temperature fluid outlet pipe 72b: cooling high-temperature fluid inlet pipe
72c: Cooling high temperature fluid outflow pipe 72d: Cooling high temperature fluid bypass pipe
73: opening / closing valve 76: fluid distributing member
81, 82, 83: opening / closing control valves 84, 85, 86: temperature detector
87: Humidity detector 100:
101: Control value setting unit 102: Display unit
103: control signal input unit 104: control signal output unit
105: alarm unit 106: remote control signal input /
107: external storage unit 108: power supply unit
110: interlock controller 111: high temperature fluid pump position
112: blower fan motor position 120: operation mode control section
121: Operation mode control operation part 122: Wet cooling operation mode
123: White smoke reduction operation mode 124: Dry cooling operation mode
130: Cooling fluid bypass flow control unit 140: Remote control unit
130: White smoke reduction control unit 140: Cooling fluid detour flow control unit
141: Remote PC (Internet) 142: Wireless communication terminal
180: High temperature fluid pump 190: Cooling load device (device)

Claims (16)

A casing (10) forming a heat exchange zone, an air supply zone (13) and an exhaust zone (14); A feed mechanism (11) formed on the side of the casing (10) in alignment with the air supply area (13); An exhaust port 17 formed at either the center or the upper end of the upper portion of the casing 10; A wet heat exchanger (20a, 20b) arranged in the heat exchange zone for cooling and heat-exchanging the hot fluid and the air; An eliminator 25 disposed above the wet heat exchangers 20a and 20b for recovering water droplets to be scattered; A distribution main pipe 32 disposed above the wet heat exchangers 20a and 20b to discharge a high temperature fluid and having a high temperature fluid inlet 31a, a plurality of distribution pipes 33 connected to the distribution main pipe 32, A water spraying part 30a composed of a plurality of water spraying nozzles 35 provided in the distribution pipe 33; A heat transfer pipe 41 which is disposed at any one of the exhaust area 14 or the upper end of the casing 10 to reduce white smoke and forms a plurality of heat transfer fins and a heat transfer pipe 41 to which one end of the heat transfer pipe 41 is connected, A high temperature fluid inlet header 44 having a high temperature fluid inlet 43 and a high temperature fluid outlet header 46 connected to the other end of the heat transfer tube 41 and having a high temperature fluid outlet 45 in one region, (40c) having a frame (42) for receiving and supporting the heat exchanger (41); A high temperature fluid supply pipe 71a for supplying a high temperature fluid to the dry heat exchange unit 40c and a cooling high temperature fluid discharge pipe 72a for discharging a high temperature fluid from the dry heat exchange unit 40c; A blowing fan unit for introducing the air supply through the air supply mechanism (11) and exhausting the heat exchanged air to the outside through the exhaust port (17); And a water collecting tank (19) disposed below the wet heat exchanging units (20a, 20b) and provided with cooling fluid outlets (18) in one region,
The dry heat exchanging part 40c is divided into an upper dry heat exchanging part 40a and a lower dry heat exchanging part 40b which is arranged stepwise at a predetermined height from the lower part of the upper dry heat exchanging part 40a;
Is formed between the side of the upper dry heat exchanging part 40a in the direction of the lower dry heat exchanging part 40b and the upper surface of the lower dry heat exchanging part 40b and is disposed between the upper dry heat exchanging part 40a and the lower dry heat exchanging part 40b An exhaust bypass flow channel 16 for bypassing the non-resistance exhaust that has not passed through the exhaust bypass flow channel 16;
Is provided between one side lower surface of the upper dry heat exchanging portion (40a) and one upper surface of the lower dry heat exchanging portion (40b) facing the side surface of the exhaust bypass flow channel (16) A bypass exhaust opening / closing unit having an exhaust opening / closing member and an opening / closing member driver for opening / closing a bypass flow of the non-resistance exhaust gas toward the exhaust opening /
(ON) and a stop (OFF) control signal of a high temperature fluid pump 180 switch for supplying a high temperature fluid to the water spraying portion 30a, the upper dry heat exchanging portion 40a and the lower dry heat exchanging portion 40b, A wet cooling operation mode 122 for controlling the high temperature fluid cooling of the wet heat exchanger 20a and a wet cooling operation mode 122 for controlling the cooling of the upper dry heat exchanger 40a and the lower dry heat exchanger 40b And a dry cooling operation mode 124 for controlling high temperature fluid cooling of the upper dry heat exchanging unit 40a and the lower dry heat exchanging unit 40b, And a control unit (100) having a cooling high temperature fluid bypass flow control unit (130) for bypassing the cooling high temperature fluid flowing out from the upper dry heat exchanging unit (40a) and the lower dry heat exchanging unit (40b) to the water collecting tank (19) High efficiency countermeasures to reduce power and white smoke Cooling towers. The method according to claim 1,
Wherein the upper dry heat exchanging part (40a) and the lower dry heat exchanging part (40b) are either one structure or a structure divided into a plurality of structures. The method according to claim 1,
Any one of the upper dry heat exchanging part 40a or the lower dry heat exchanging part 40b may be disposed on one side or both sides of any one of the lower dry heat exchanging part 40b or the upper dry heat exchanging part 40a facing the lower dry heat exchanging part 40a or the lower dry heat exchanging part 40b, Further comprising a heat exchange area expanding section (48) for expanding the heat exchange and exhaust flow areas overlapping in either direction so as to expand the heat exchange capability and reduce the exhaust flow resistance. The high efficiency counterflow type Cooling tower. The method according to claim 1,
The bypass exhaust opening / closing portion includes an exhaust opening / closing member 51a constituted by a damper having a plurality of opening / closing blades, a rotating shaft for opening and closing the exhaust opening / closing member 51a by rotating the opening / closing member 51a, and an opening / closing member driver 51a for driving the rotating shaft An exhaust opening / closing member 51b having one opening / closing plate, a rotating shaft for opening and closing the exhaust opening / closing member 51b, and an opening / closing member driver 51a for driving the rotating shaft An exhaust opening / closing member 51c constituted by an exhaust opening / closing section 50b or a rolling shutter, and a bypass exhaust opening / closing section 50c constituted by an opening / closing door synchronization mechanism 52b for opening and closing the exhaust opening / closing member 51c And the cooling tower is a high efficiency counter flow type cooling tower which reduces power. The method according to claim 1,
The blowing fan unit includes a fan cylinder 61, an axial flow blowing fan 63a accommodated in the fan cylinder 61, and a suction ventilating fan unit 63a having a motor 65 for driving the blowing fan 63a A centrifugal blower fan 63b accommodated in the fan housing 64 and a blower fan 64b disposed in the blower fan 64. The blower fan 64 is disposed in the fan housing 64, And a press-in ventilation type blowing fan portion (60b) having a motor (65) for driving the cooling fan (63a, 63b). The method according to claim 1,
The high temperature fluid supply pipe 71a is opened when either the whitening reduction operation mode 123 or the dry cooling operation mode 124 is turned on or closed when the hot cooling operation mode 123 is turned off and the wet cooling operation mode 122 is closed, Closing control valve 81 for reducing the flow resistance and reducing the power consumption of the high temperature fluid pump so as to prevent the high temperature fluid from flowing unnecessarily to the upper dry heat exchanging part 40a and the lower dry heat exchanging part 40b, Further comprising:
And a high temperature fluid supply pipe 71b branching from the high temperature fluid supply pipe 71a and connected to the high temperature fluid inlet port 31b provided at one end of the distribution main pipe 32,
Closing control valve 81 is closed when the opening / closing control valve 81 is opened (closed) in conjunction with the opening / closing control valve 81 provided in the high-temperature fluid supply pipe 71b, And a switching control valve (82) which is opened to supply a high-temperature fluid to the water spraying portion (30a) when the cooling water is supplied to the water spraying portion (30a). The method according to claim 1,
The high temperature fluid inflow port 31a is provided at a lower position than the water spraying portion 30a so as to supply the cooling high temperature fluid to the sprayer portion 30a and prevent the flow back to the sprayer portion 30a when the cooling hot fluid is bypassed. Further comprising a cooling high-temperature fluid inflow pipe (72b) branched from and connected to the cooling high-temperature fluid outflow pipe (72a) of the high-temperature countercurrent cooling type cooling tower. The method according to claim 1,
The high temperature fluid is cooled between the cooling high temperature fluid outflow pipe 72a and the water collecting tank 19 by the upper dry heat exchanging unit 40a and the lower dry heat exchanging unit 40b, Further comprising a cooling high-temperature fluid bypass drain pipe (72d) for bypassing the cooling high-temperature fluid cooled when the operation mode is switched to the cooling operation mode (124) to the water collecting tank (19)
The cooling high-temperature fluid bypass conduit (72d) further includes an opening / closing control valve (83) for opening / closing the bypass conduit of the cooling high-temperature fluid. The method according to claim 1,
The control unit 100 includes a control value setting unit 101 for setting a control value, a display unit 102 for indicating a control state, a control signal input unit 103 for inputting detection and contact signals, An alarm unit 105 for alarming abnormal operation and failure, a remote control signal input / output unit 106 for remotely controlling via wired and wireless communication network, an external storage unit for externally storing control data, (107) and a power supply unit (108) for supplying a control power. The high efficiency countercurrent cooling tower reduces white smoke and power. 10. The method according to any one of claims 1 to 9,
The control unit 100 is connected to the control unit 100 to control the operation of the interlocking control unit 110, the wet cooling operation mode 122, the white smoke reduction operation mode 123, the dry cooling operation mode 124 and the cooling fluid bypass flow control unit 130, And a remote control unit 140 for controlling the remote control of the remote PC 141 via the Internet or the wireless communication terminal 142 of the remote PC 141, High-efficiency counterflow type cooling tower that reduces white smoke and power. A control method of a high-efficiency counterflow type cooling tower for reducing white smoke and power,
The control method includes controlling the ON and OFF control signals of the high temperature fluid pump 180 for supplying the high temperature fluid to the water spraying section 30a, the upper dry heat exchanging section 40a and the lower dry heat exchanging section 40b, An interlocking control step of interlocking control of the blower fan motor 65 and the operation mode control operation part 121 according to the operation mode of the interlocking control part 110;
Selecting one of the wet cooling operation mode 122, the white smoke reduction operation mode 123 and the dry cooling operation mode 124 of the operation mode control unit 120 according to a control signal for switching the operation mode;
A cooling high-temperature fluid bypass flow control unit 130 for bypassing the cooling high-temperature fluid flowing out from the upper dry heat exchanging unit 40a and the lower dry heat exchanging unit 40b to the collecting tank 19, And a control method of a high efficiency counterflow type cooling tower. 12. The method of claim 11,
The interlocking controller 110 determines the ON contact signal of the input high temperature fluid pump switch 111 and applies the signal to the control signal ON in operation S111.
The control signal ON is output to the blower fan motor 65 switch 112 and the operation mode control operation unit 121 so that the blower fan motor 65 switch 112 and the operation mode control operation unit 121 are operated, (S112, S113);
Determining (114) an operation stop signal (OFF) of the inputted hot fluid pump (180) switch (111) and applying it to the control signal (OFF);
And outputs the applied control signal (OFF) to the blower fan motor 65 switch 112 and the operation mode control operation unit 121 to output the blower fan motor 65 switch 112 and the operation mode control operation unit 121, (S115, S116) of stopping the operation of the cooling tower. 12. The method of claim 11,
The wet cooling operation mode 122 is a step of comparing the wet cooling operation temperature detection signal t1 inputted from the cooling fluid temperature detector 84 with the wet cooling operation setting control value and applying it with the control signal ON S121);
A step S122 of outputting the applied control signal ON to turn on the wet cooling operation mode 122;
The ON operation of the exhaust bypass flow path switching parts 50a, 50b and 50c, the opening of the high temperature fluid supply ON / OFF control valve 82, the ON operation of the high temperature fluid supply ON / Closing the fluid supply opening / closing control valve 81 (S123, S124, S125);
(S126) comparing the wet cooling operation temperature detection signal (t1) inputted from the cooling fluid temperature detector (85) with the set control value of the wet cooling operation stop and applying it as a control signal (OFF);
(S127) of outputting the applied control signal (OFF) to stop the operation of the wet cooling operation mode 122 (OFF);
Closing of the exhaust bypass flow path open / close portions 50a, 50b and 50c, closing of the high temperature fluid supply open / close control valve 82 (OFF) in conjunction with the step of stopping the wet cooling operation mode 122, (S128, S129, S131) in which the high-temperature fluid supply opening / closing control valve (81) is opened (S128, S129, S131). 12. The method of claim 11,
The white smoke reduction operation mode 123 is a mode in which the white smoke reduction operation temperature detection signal t2 inputted from the outside air temperature detector 85 and the white smoke reduction operation detection humidity h1 inputted from the ambient air humidity detector 87 are converted into white smoke reduction operation (S132, S133) comparing the set control value with a control signal (ON);
(S134) of outputting the applied control signal (ON) to turn on the white smoke reduction operation mode 123 (ON);
(S135) of determining the operation (ON) signal of the white smoke reduction operation mode 123 and applying it to the control signal (ON);
Closing of the exhaust bypass flow path switching portions 50a, 50b and 50c and opening of the high temperature fluid supply opening and closing control valve 81 in conjunction with the operation (ON) step control signal of the white smoke reducing operation mode 123, (S136, S137, S138) of closing the high temperature fluid supply opening / closing control valve 82;
The white smoke reduction operation temperature detection signal t2 inputted from the outside air temperature detector 85 and the white smoke reduction operation detection humidity h1 inputted from the outdoor air humidity detector 87 are compared with the set control value of the white smoke reduction operation stop (S139, S141) of applying the control signal (OFF);
(S142) of outputting the applied control signal (OFF) to stop the operation of the whitening reduction operation mode 123 (OFF);
(S143) of determining the operation stop (ON) signal of the white smoke reduction operation mode 123 and applying the signal to the control signal (OFF);
Closing of the exhaust bypass flow path switching portions 50a, 50b and 50c and closing of the high temperature fluid supply opening and closing control valve 81 in conjunction with the operation stop (OFF) step control signal of the white smoke reducing operation mode 123 (S144, S145, S146) of opening and closing the high-temperature fluid supply opening / closing control valve (82), and controlling the high-temperature, opposing-flow type cooling tower. 12. The method of claim 11,
The dry cooling operation mode 124 is a step of comparing the dry cooling operation temperature detection signal t3 inputted from the ambient temperature detector 85 with the dry cooling operation setting control value and applying it to the control signal ON );
A step (S148) of outputting the applied control signal (ON) and operating (ON) the dry cooling operation mode 124;
Closing of the high temperature fluid supply opening and closing control valve 81, opening of the cooling high temperature fluid detouring flow opening and closing control valve 83 in conjunction with the operation (ON) of the dry cooling operation mode 124, (S149, S151, S152, and S153) of closing the bypass flow path open / close portions 50a, 50b, and 50c and closing the high temperature fluid supply open / close control valve 82;
(S154) comparing the dry cooling operation temperature detection signal (t3) input from the outdoor temperature detector (85) with the dry cooling operation stop setting control value and applying it as a control signal (OFF);
A step S155 of outputting the applied control signal OFF to stop the operation of the dry cooling operation mode 124;
Closing of the high temperature fluid supply opening / closing control valve 82, closing of the cooling high temperature fluid bypass flow opening / closing control valve 83 in conjunction with the operation stopping (OFF) of the dry cooling operation mode 124, (S156, S157, S158, S159) of closing the high temperature fluid supply opening / closing control valve 81 and opening the exhaust bypass flow path opening / closing portions 50a, 50b, 50c. And a control method of a high efficiency counterflow type cooling tower. 12. The method of claim 11,
The cooling high temperature fluid detour flow control unit 130 compares the cooling high temperature fluid detour flow detection signal t4 inputted from the cooling high temperature fluid temperature detector 86 with the cooling high temperature fluid detour setting control value and outputs a control signal ON) (S161);
(S162) of outputting the applied control signal (ON) and opening (ON) the cooling high temperature fluid bypass flow control valve 83;
(S163) comparing the cooling high temperature fluid detour temperature detection signal (t4) inputted from the cooling high temperature fluid temperature detector (86) with the set control value of the cooling high temperature fluid detour stop and applying it as a control signal (OFF) ;
(S164) of outputting the applied control signal (OFF) to close the cooling high temperature fluid bypass flow control valve (83) (S164). The high efficiency counterflow type cooling tower / RTI >

Images