CN102057243A - Evaporative cooling tower enhancement through cooling recovery - Google Patents
Evaporative cooling tower enhancement through cooling recovery Download PDFInfo
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- CN102057243A CN102057243A CN200980121448.6A CN200980121448A CN102057243A CN 102057243 A CN102057243 A CN 102057243A CN 200980121448 A CN200980121448 A CN 200980121448A CN 102057243 A CN102057243 A CN 102057243A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
- F28C1/06—Direct-contact trickle coolers, e.g. cooling towers with both counter-current and cross-current
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
- F28C1/14—Direct-contact trickle coolers, e.g. cooling towers comprising also a non-direct contact heat exchange
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0266—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
A method of enhancing evaporative cooling towers of various types. Such cooling towers have a flow of water, an air intake stream of ambient air and an air exhaust such that the flow of water is cooled by ambient air from the air intake and evaporating a portion of that water flow into the ambient air, and the air discharge stream for the ambient air and a portion of evaporated water from the water flow. The method provides a closed cycle coolant channel having a heated heat discharge portion and a cooled heal sink, placing the cooled portion at the air intake, placing the heated portion in the flow of the air at the air exhaust. The ambient air flow at the intake is cooled by the closed cycle coolant channel, reducing its wet bulb temperature and increasing the capability of the cooling tower to cool the flow of water.
Description
Background
The present invention relates to be used to improve the method and system of the performance and the potential scope of application of standard wet cooling tower.More specifically, the present invention has instructed by using heat transfer system or for example a series of thermal siphons of device or heat pipe to improve cooling output, with by heat is discharged and pre-cooled evaporation section of passing cooling tower is carried enters surrounding air from evaporation section to cool stream and with the discharged air of humidity from entering transfer of air.The present invention has and reduces wet-bulb temperature and the final effect that reduces the temperature of working fluid enter air, and working fluid is normally in the closed-loop path or the water in tank; Closed-loop path evaporative fluid cooler can be used for cooling off any in many industrial fluids and will be described to evaporative condenser in this case, wherein the phase transformation of fluid experience from the steam to liquid.The temperature of this working fluid reduce depend on make heat from the transfer of air that enters the cooling tower inlet to efficient, the condition (dry-bulb temperature and wet-bulb temperature) of surrounding air and the thermic load on the working fluid at the air of the floss hole (exhaust) of cooling tower.
General introduction
Therefore, the equipment and the method that strengthen wet cooling tower 10 are disclosed, wet cooling tower 10 have surrounding air air intake stream 22, current, be used for by making current stand and making the part of these current be evaporated to that surrounding air comes the device of cooling water flow and air and from the air discharge ports of a part of evaporation water of current from the surrounding air of air intake.Disclosed enhancing comprises provides closed cycling hot transmission system, and this closed cycling hot transmission system has part to be heated (being called " heat absorption part (heat sink portion) " sometimes) and part to be cooled (being called " hot driving part " sometimes); Hot driving to be cooled partly is arranged in the air discharge stream; Heat absorption to be heated partly is arranged in the air intake stream.Like this, stream of ambient air is cooled off by closed cycling hot transmission system, thereby has reduced its wet-bulb temperature and increased cooling tower by current being evaporated to the performance of coming cooling water flow in the air stream.This closed cycling hot transmission system can comprise: one or more thermal siphons, heat pipe, pump withdrawing fluid loop, parallel plate type heat exchanger (parallel plate heat exchanger) or heat wheel (heat wheel), heat wheel is also referred to as rotary recuperator.Ideally, water is cooled to the temperature that is lower than at the wet-bulb temperature of the surrounding air at air intake place, even is cooled near the temperature in the dew-point temperature of the surrounding air at air intake place.Be higher than in air discharge ports under the situation of air intake, closed cycling hot transmission system is passive type heat pipe or thermal siphon preferably.Wherein the evaporative cooling Tower System fully is designed, and particularly it has farthest utilized closed circulating cooling system, and this closed circulating cooling system can be preferably heat wheel or rotary recuperator type.
The accompanying drawing summary
Fig. 1 is the schematic diagram of open cooling tower 10, and open cooling tower 10 has at this and is shown as water distribution thing 18 systems of flusher and will enters high surface filler (high surface area fill) 20 and closed circulating cooling system 30 in the tank 24 as the water of working fluid.
Fig. 2 is that wherein the water distribution thing sprays the selectable system of the closed-loop path that comprises working fluid and the schematic diagram of closed circulating cooling system.
Fig. 3 is to use American Society of Heating, Refrigeration andAir-Conditioning Engineers, Inc. the hygrogram that produces of (U.S. heating, Refrigeration ﹠ Air-Conditioning SE) computer program " Psychrometric Analysis; Version 6 (psychrometrc analysis, the 6th edition) " (ASHRAE).The figure shows the design performance of cooling tower that can get on the normal business that is used for 5.6 degrees centigrade of process temperature difference (processrange) and identical cooling tower with performance designed according to this invention.
Fig. 4 is the similar hygrogram from the ASHRAE computer program, and it has shown the identical standard cooling tower that is used for 2.2 degrees centigrade of process temperature difference and has had the performance of the cooling tower of performance designed according to this invention.
Fig. 5 a and Fig. 5 b shown have be respectively applied for 5.6 degrees centigrade with 2.2 degrees centigrade the temperature difference according to the designed cooling water production performance of the present invention and the sample cooling tower performance curve family under the heat exchanger effectiveness grade of various ambient air conditions and 75% of relevant evaporation.Wet bulb depression parameter (wetbulb depression parameter) is the difference between environment dry-bulb temperature and the wet-bulb temperature.
Fig. 6 a and Fig. 6 b have shown that performance and cooling water temperature therein and the air by the adjustment criteria cooling tower flow and under the situation that the performance that obtained by the standard cooling tower and cooling water temperature are complementary, the sample cooling tower operation curve family of identical process temperature difference temperature, ambient air conditions and heat exchanger effectiveness grade.This curve has shown with respect to the needed fan speed of the fan speed of standard cooling tower; Evaporation water consumption characteristics with respect to the evaporation water consumption characteristics of standard cooling tower is numerically similar with relative fan speed.
Traditional strategy by evaporation of water cooling work fluid. It is very good that this evaporative cooling process turns round in the environment of relatively dry, and the environmental air of relatively dry has the ability of significant absorption moisture when the phase transformation from liquid to the steam of evaporation water experience. There is not in the cooling tower of thermic load the temperature of cooling water and therefore will reach the wet-bulb temperature corresponding with specific ambient air temperature and humidity with the temperature of the working fluid of cooling water close contact at cooling water. Because thermic load is present on the cooling water usually, so this one theory does not reach in practice. But be known that so it is more low to enter the wet-bulb temperature of air, it is more cold that water can become because the purpose of cooling tower provides cooling water, and therefore cooling water becomes more useful for cooling building or industrial process. The performance of cooling tower is described to " wet bulb degree of approximation " (approach to wet bulb) usually; If the cooling water that cooling tower produces is than high 8 degree of wet-bulb temperature of the surrounding air that flows into tower, cooling tower is described to obtain the wet bulb degree of approximation of 8 degree so.
The main policies that improves the cooling tower performance is the relatively large surrounding air that moves through tower, and increases the surface area of the air stream that is exposed to water to be evaporated. The cooling load that reduces on the cooling tower has been improved (reduction) wet bulb degree of approximation; For the given cooling tower with fixing water velocity, the load of reduction changes into the running temperature difference (inlet temperature of working fluid and the difference between the outlet temperature) of reduction. For given load, can obtain identical effect by utilizing super-huge cooling tower. Yet, even extremely big cooling tower can not will be water-cooled to the wet-bulb temperature that is lower than the surrounding air that sucks cooling tower. Developed the enhancement mode cooling tower, when surrounding air is enough cold, to come the pre-cooled water that enters by the heat exchange with surrounding air. This feature has and reduces the effect put on the process temperature difference (load) on the tower, thereby improves the wet bulb degree of approximation and reduced the consumption of water, but it can not be used in the hot ambient air conditions.
Developed other enhancement mode cooling tower, come the pre-cooled surrounding air that enters cooling tower with the fresh water (FW) that uses some coolings, thereby reduce its wet-bulb temperature.From the viewpoint of the possible cooling water temperature that obtains by cooling tower, this method has identical with the present invention basically effect.Yet, being different from enhancing discussed in this article, the fresh water (FW) of use cooling is next pre-cooled to have consumed a large amount of cooling tower performances, thereby has reduced useful (remaining) cooling tower output significantly.Under the condition of some high ambient temperatures, the part of so pre-cooled required cooling tower performance can equal total output of cooling tower, makes cooling tower not produce clean useful cooling effect.
There is not the people formerly to use the closed-loop path heat transfer system heat to be moved in the air of cold relatively (but relative high humility) of leaving tower as yet, to help to reduce the temperature (and wet-bulb temperature) of the air of warm (but low humidity) relatively that is inhaled into cooling tower, as being described in detail.This enhancing causes not having any sacrifice in performance and reducing simultaneously under the situation of evaporation water consumption, has enlarged the theoretical performance restriction of cooling tower from wet-bulb temperature to lower usually dew-point temperature.
Therefore, Fig. 1 shows the schematic diagram that heat that the cooling tower 10 with cooling load L will arrive process for cooling is delivered to working water 12.Show that the air that enters cooling tower inlet 22 enters from lower left side.By traditional power type fan 14 air is rolled and to be passed cooling tower, but by using convection current can replenish or omit this fan, particularly in very large hyperbolic-type tower, wherein the periphery inlet of air intake stream 22 by at grade enters tower, and air discharge stream 16 is left tower between 300 feet to 500 feet at this more than the plane.The sprinkling 18 of working water flows downward with reflux type and passes filler material 20, and packing material 20 roles are to increase the surface area of water and increase the contacting of air of passing the warm drying of filler with rising.The evaporation of part water, cooled off remaining liquid water, this remaining liquid water is collected in the tank 24 and is used to cool off can be the load L of building or be used for other cooling tasks, for example absorbs from from the refrigeration system of industrial process or from the heat of the load L discharging of power plant condenser.
The recuperation of heat or the heat transfer system of the schematically illustrated closed cycling hot transmission system 26 that comprises known type in addition, it links to each other with the evaporation water cool cycles but operation dividually.Hot driving coil pipe (heat discharge coil) 28 is arranged in the air stream that leaves air stream (exit airflow) 16 and heat is dispersed into this outflow.Contact with the air stream that enters that enters air intake 22 from the heat of heat absorption coil pipe 30 circulations, enter air stream thereby cooled off this.This closed cycling hot transmission system can be made up of one or more thermal siphons, heat pipe, pump withdrawing fluid loop, parallel plate type heat exchanger or heat wheel.
More particularly; this closed cycling hot transmission system 26 can be pump withdrawing fluid loop, parallel plate type heat exchanger or heat wheel; but preferably; at least for modifying device; it should be the parallel heat pipes or the thermal siphon of one or a series of form known; utilize following true advantage: after working fluid flowed 16 condensations by the cold relatively discharged air of leaving cooling tower, the working fluid in this heat pipe can come downwards to the warm recovery coil pipe that is positioned at the air intake place by gravity traction downwards usually.At this moment, heat pipe work fluid evaporation or thermal siphon fluid temperature (F.T.) increase, and enter air and reduce its wet-bulb temperature thereby absorb from some heats that enter air and therefore cool off.This is entered air carry pass cooling tower and be exposed to the water of the adverse current in the cooling tower before, cooling off this, to enter air will be very useful for cooling water being offered tank.
Fig. 2 schematically shows different slightly standard type cooling towers 10, and it has the long-pending coil pipe (pipe surface areacoil) 32 of the tubular surface that comprises the working fluid 12 that is used for technology cooling or cooling load L.This cooling coil is immersed in the spray water 18, and spray water 18 also falls to pass by fan 14 (having or do not have aforesaid convection current strengthens) traction with reflux type and passes the surrounding air of cooling tower and fall into tank 24.Similarly, the heat absorption coil pipe 30 that enhancing system 26 is had the recuperation of heat coil pipe 28 in cold discharged air stream 16 and regulated warm air before warm air enters tower by air intake by schematically being shown as.System as shown in fig. 1, closed-loop path heat transfer system 26 can be the system that is selected from one or more heat pipes, thermal siphon or heat wheel, and this depends on and to be cooled enter air stream and will be distributed direction and separation distance into wherein discharged air stream from the heat of selected closed-loop path heat transfer system.
Turn to Fig. 3 and Fig. 4, will become obvious strengthening the property of cooling procedure of the present invention shown in Fig. 1 and Fig. 2 and equipment.Fig. 3 is the hygrogram in the normal temperature on sea level.The performance curve that is labeled as " standard cooling tower ... " has shown the relative standard's of the type illustrated in figures 1 and 2 commercial typical air side process (airside process) that gets cooling tower mechanism.Example hereto, the air that enters cooling tower is assumed to 37.8 degrees centigrade under about 22% relative humidity, and has 21.1 degrees centigrade wet-bulb temperature and 12.2 degrees centigrade dew point.When air process cooling tower, it absorbs moisture and is cooled to below the ambient air temperature usually.The delivery air temperature of sample cooling tower with process temperature difference of 5.6 degrees centigrade is shown as 27.1 degrees centigrade, and the water output temperature is stabilized in about 26.0 degrees centigrade.The performance curve that is labeled as " enhancement mode cooling tower 75% efficient ... " has shown the design performance that has as the identical cooling tower of preceding disclosed heat recovery system.At this, this heat recovery system is assumed that to have 75% heat exchanger effectiveness grade.That is, can will transfer to outlet air from 75% of the heat of intake air in the combination of the recuperation of heat coil pipe of air intake and floss hole.In case whole system is stable, this will make the intake air temperature be cooled to about 28.1 degrees centigrade new temperature from 37.8 degrees centigrade.This is the difference of 75% between the temperature of the surrounding air that enters the recuperation of heat coil pipe of about 27.7 degrees centigrade new stable outlet temperature and 37.8 degrees centigrade in 75% the efficient that shows on the figure.
Therefore, enhancing system will cause the temperature of working fluid to be reduced to about 23.8 degrees centigrade-2.2 degrees centigrade cooling benefit.Even consider the capital and the maintenance cost of thermal siphon and/or heat-pipe apparatus, and caused to the little of air-flow but measurable restriction by the heat exchange surface that applies these heat-transfer arrangements, the following general who has surrendered that this of water temperature is 2.2 degrees centigrade is that significant efficient strengthens.Thereby equipment of the present invention can allow to reduce the scale of typical cooling tower and reduce required gross energies such as mobile air, water, or existing Tower System can move to reduce the power consumption of fan, because the cooling load on the cooling tower working fluid can more easily be satisfied with the air-flow that reduces.Lower cooling water temperature also can improve the energy characteristics of process of refrigerastion by the energy that reduction is consumed, or by increasing the energy characteristics that the energy that is produced improves the power production process.Thereby the enhancement mode cooling tower has also reduced the water evaporation and has also reduced needed supplementing water with respect to the standard cooling tower, and this will discuss in detail with reference to figure 5 and Fig. 6.
Fig. 4 has shown similar curve, but the process temperature difference herein is at 2.2 degrees centigrade.This temperature difference of 2.2 degrees centigrade equals to have increased with respect to load the performance of cooling tower, and has reduced the wet bulb degree of approximation of standard cooling tower.At this, analysis is similar and 75% the available heat exchange of supposition also is employed.Yet 2.2 degrees centigrade the temperature difference allows the cooling tower outlet temperature suitably lower, thereby and strengthens curve show that the cooling water temperature expectation reaches 19.5 degrees centigrade when balance.System as show in Figure 3, it is very favorable that this cooling water of 23.3 degrees centigrade with the identical cooling tower that is used for not strengthening is compared, and has caused 3.8 degrees centigrade cooling benefit.Cooling water temperature also is lower than 1.5 degrees centigrade of environment wet-bulb temperature, and this is impossible for the standard cooling tower.The lower cooling water temperature that is obtained might only use evaporation process and not need refrigeration that the building cooling is provided.The employed evaporative cooling process that is used for building adds moisture to the building air usually at present, and this part has offset the comfortable benefit of cooling.
Fig. 5 a and Fig. 5 b have illustrated that also this performance strengthens the performance curve of 2.2 and 5.6 degrees centigrade the temperature difference of its display standard cooling tower, and 2.2 and 5.6 degrees centigrade data of enhancement mode tower.5.6 degrees centigrade example for environment wet-bulb temperature with 16.7 degrees centigrade wet bulb depression and 21.1 degrees centigrade, the cooling water temperature that is obtained is 23.8 degrees centigrade, meet situation shown among Fig. 3, and the water of prediction be evaporated to the standard cooling tower water evaporation 84%.2.2 degrees centigrade example for environment wet-bulb temperature with 16.7 degrees centigrade wet bulb depression and 21.1 degrees centigrade, the cooling water temperature that is obtained is 19.5 degrees centigrade, meet situation shown among Fig. 4, and the water of prediction be evaporated to the standard cooling tower water evaporation 61%.
Fig. 6 a and Fig. 6 b have illustrated that the performance of the selectable operation strategy that is complementary from the performance of the performance that makes the enhancement mode cooling tower and cooling water temperature and standard cooling tower and cooling water temperature strengthens.Figure has shown the performance curve of 2.2 and 5.6 degrees centigrade the temperature difference of standard cooling tower, and 2.2 and 5.6 degrees centigrade rate curve of enhancement mode tower.For 5.6 degrees centigrade example of environment wet-bulb temperature with 16.7 degrees centigrade wet bulb depression and 21.1 degrees centigrade, with respect to the needed fan speed of standard cooling tower be 75% and the water evaporation of prediction be 75%.For 2.2 degrees centigrade example of environment wet-bulb temperature with 16.7 degrees centigrade wet bulb depression and 21.1 degrees centigrade, with respect to the needed fan speed of standard cooling tower be 52% and the water evaporation of prediction be 50%.
Thereby illustrate that Enhancement Method that is proposed and cooling tower system can easily adapt to the wide range of applications that comprises direct building cooling, industrial process cooling and similar cooling.
Because when system moves under stable state, cooling water will stand to be lower than the air stream of environment temperature, so the enhancement mode cooling tower can reduce the live load and the ambient air temperature of the amount and the equivalent of the water that is used to evaporate.Though any in the selected closed circulating cooling system all will limit flowing of the air that enters and discharge cooling tower to a certain extent, it will be small that the reduction of fan efficiency is compared with the overall efficiency of cooling effectiveness.This is tangible especially having the improvement design that has variable-speed motor or being arranged in the improvement system in the improvement design that has variable-speed motor.Fan speed can be lowered to reduce air stream in proportion and keep performance and the cooling water temperature identical with the standard cooling tower simultaneously, rather than obtains the reduction of working water temperature for given load.Because the function of the cube of the volume of the air that the power consumption of generator is a time per unit moves (supposition can be ignored from the loss of variable speed control circuit).Although increase along with closed cycling hot exchange system, a small amount of increase of fan power at full speed will be had, if but can make the required electrical power of fan operation will be reduced to 1/8th of the required electrical power of full speed running so by satisfy the cooling requirement of load with half operation fan of initial velocity.Fig. 6 has shown this point by chart.
Air-conditioning system in the big building utilizes cooling tower to come from the heat extraction of water cooling refrigeration system usually.Because it is very high to move the cost of such refrigeration system, so such cooling system is constructed to allow usually during the temperate condition of surrounding air dry-bulb temperature and wet-bulb temperature, directly produce the cooling water of proper temperature, and do not move cooler from cooling tower.Because do not need the refrigeration system of power consumption relatively, this is called as " freely cooling off (free cooling) ".Has disclosed this cooling system of strengthening the property by providing, the hourage of this " freely cooling off " (promptly not needing the cooling of running refrigerating system) can increase hundreds of hours every year, has caused the saving of cost and the investment fast of the enhancing system of being discussed to be reclaimed.
The increase cooling effectiveness of subject methods also will help to transform the existing system with old-fashioned additional refrigeration system, for example discussed above those.Many existing systems use CFC (chlorinated fluorocarbon) cold-producing medium of known harm ozone layer.Acceptable alternative refrigerant can be used to replace CFC on the environment, but the use of known alternative refrigerant can reduce the efficient of this refrigeration system, thereby must replace cooling tower with bigger, more high performance unit, perhaps must replace whole refrigeration system.By improving existing cooling tower, even acceptable cold-producing medium on the existing refrigeration system environment for use also may satisfy cooling load, and need not replace existing cooling tower with disclosed enhancing system.
Claims (according to the modification of the 19th of treaty)
1. method that strengthens wet cooling tower, described cooling tower has current, air intake and air discharge ports, described air intake is used for the air intake stream of reception environment air, make and to cool off described current by a part that makes described current stand the air intake stream of surrounding air and to evaporate described current, described air discharge ports is used for the part of the air discharge stream and the water that is evaporated of the described current that come free described air discharge stream to carry, and described method comprises:
A) provide closed cycling hot transmission system with hot driving part and heat absorption part,
B) make described hot driving partly stand the part of described air discharge stream and the described water that evaporates,
C) make described heat absorption partly stand the air intake stream of described surrounding air, heat is passed to described air discharge stream thus, and the air intake that is cooled off described surrounding air by described closed cycling hot transmission system flows, and has reduced its wet-bulb temperature and has increased the performance that described cooling tower cools off described current.
2. the method for claim 1, wherein said closed cycling hot transmission system is selected from the group of the heat-exchange system that comprises thermal siphon, heat pipe, pump withdrawing fluid loop, parallel plate type heat exchanger and heat wheel.
3. the method for claim 1, wherein said closed cycling hot transmission system is a heat pipe.
4. the method for claim 1, wherein said water can be cooled to the temperature that is lower than at the wet-bulb temperature of the surrounding air at described air intake place.
5. the method for claim 1, wherein said water can be cooled near the temperature in the dew-point temperature of the surrounding air at described air intake place.
6. the method for claim 1, wherein said air discharge ports is above described air intake.
7. method as claimed in claim 6, wherein said closed cycling hot transmission system is heat pipe or thermal siphon.
8. the method for claim 1, wherein said closed cycling hot transmission system is a heat wheel.
9. a cooling is used to have the method for supply water of the process of predetermined cooling load and temperature, it comprises: the water wet cooling tower is provided, described water wet cooling tower has ambient air inlet, air discharge ports and described supply water, described ambient air inlet is used for receiving the air intake stream from atmosphere, described air discharge ports is used for from described cooling tower discharged air discharge stream, and described supply water comes evaporative cooling by the air stream from the described air discharge ports of described air intake process; Make heat be delivered to described air discharge stream from cooling load; Closed cycling hot transmission system with heat absorption part and hot driving part is provided; Described heat absorption partly is arranged in the ambient air inlet stream and with described hot driving partly is arranged in the described air discharge stream, the dry-bulb temperature of described thus air discharge stream is lower than the dry-bulb temperature of described air intake stream, thereby make heat be delivered to described air discharge stream from described air intake stream, the dry-bulb temperature and the wet-bulb temperature of described air intake stream have been reduced, reduce air flow thus to satisfy the described predetermined load and the requirement of temperature, the identical cooling tower of the closed cycling hot transmission system that provides with respect to not having thus reduces from the amount of the water of described supply water evaporation.
10. cooling as claimed in claim 9 has the method for the process of predetermined cooling load, and wherein said cooling load is from refrigeration system, power plant condenser, industrial process or building space.
11. cooling as claimed in claim 9 has the method for the process of predetermined cooling load, wherein said closed cycling hot transmission system comprises and is selected from a kind of in the group of being made up of heat pipe, thermal siphon, heat wheel, parallel plate type heat exchanger and pump withdrawing fluid loop.
Illustrate or state (according to the modification of the 19th of treaty)
Statement 081003411
Claim 1 has been modified to illustrate the air discharge stream that the hot driving that makes closed cycling hot transmission system partly stands to carry the part of the water that is evaporated, make heat absorption partly stand ambient air inlet stream simultaneously, thereby reduced the wet-bulb temperature of ambient air inlet stream.
Claim 9 has been revised similarly to illustrate the air stream that passes cooling tower have been reduced, and thereby the amount of the water that need be evaporated is reduced, so that the cooling water requirement of the load that is used to be scheduled to be provided by the air discharge stream that provides closed cycling hot transmission system to make heat be delivered to cooling tower from ambient air inlet stream.
Claims (11)
1. method that strengthens wet cooling tower, described cooling tower has current, air intake and air discharge ports, described air intake is used for the air intake stream of reception environment air, make and to cool off described current by a part that makes described current stand air stream and to evaporate described current, described air discharge ports is used for the air discharge stream and from the part of the water that is evaporated of described current, described method comprises:
A) provide closed cycling hot transmission system with hot driving part and heat absorption part,
B) make described hot driving partly stand described air discharge stream,
C) make described heat absorption partly stand described air intake stream, heat is passed to described air discharge stream thus, and come cool ambient air stream by described closed cycling hot transmission system, reduced its wet-bulb temperature and increased the performance that described cooling tower cools off described current.
2. the method for claim 1, wherein said closed cycling hot transmission system is selected from the group of the heat-exchange system that comprises thermal siphon, heat pipe, pump withdrawing fluid loop, parallel plate type heat exchanger and heat wheel.
3. the method for claim 1, wherein said closed cycling hot transmission system is a heat pipe.
4. the method for claim 1, wherein said water can be cooled to the temperature that is lower than at the wet-bulb temperature of the surrounding air at described air intake place.
5. the method for claim 1, wherein said water can be cooled near the temperature in the dew-point temperature of the surrounding air at described air intake place.
6. the method for claim 1, wherein said air discharge ports is above described air intake.
7. method as claimed in claim 6, wherein said closed cycling hot transmission system is heat pipe or thermal siphon.
8. the method for claim 1, wherein said closed cycling hot transmission system is a heat wheel.
9. a cooling has the method for the process of predetermined load and temperature, it comprises: the water wet cooling tower is provided, described water wet cooling tower has ambient air inlet, air discharge ports and supply water, described ambient air inlet is used for receiving the air intake stream from atmosphere, described air discharge ports is used for from described cooling tower discharged air discharge stream, and described supply water comes evaporative cooling by the air from the described air discharge ports of described air intake process; Make heat be delivered to described air discharge stream from cooling load; Closed cycling hot transmission system with heat absorption part and hot driving part is provided; Described heat absorption partly is arranged in the described air intake stream and with described hot driving partly is arranged in the described air discharge stream, the dry-bulb temperature of described thus air discharge stream is lower than the dry-bulb temperature of described air intake stream, thereby make heat be delivered to described air intake stream from described air discharge stream, its dry-bulb temperature and wet-bulb temperature have been reduced, reduce air flow thus to satisfy the described predetermined load and the requirement of temperature, the identical cooling tower of the closed cycling hot transmission system that provides with respect to not having thus reduces from the amount of the water of described supply water evaporation.
10. cooling as claimed in claim 9 has the method for the process of predetermined cooling load, and wherein said cooling load is from refrigeration system, power plant condenser, industrial process or building space.
11. cooling as claimed in claim 9 has the method for the process of predetermined cooling load, wherein said closed cycling hot transmission system comprises and is selected from a kind of in the group of being made up of heat pipe, thermal siphon, heat wheel, parallel plate type heat exchanger and pump withdrawing fluid loop.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US4603608P | 2008-04-18 | 2008-04-18 | |
| US61/046,036 | 2008-04-18 | ||
| PCT/US2009/041056 WO2009129517A1 (en) | 2008-04-18 | 2009-04-18 | Evaporative cooling tower enhancement through cooling recovery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102057243A true CN102057243A (en) | 2011-05-11 |
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Country Status (8)
| Country | Link |
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| US (1) | US20110174003A1 (en) |
| EP (1) | EP2279386A1 (en) |
| KR (1) | KR20110021783A (en) |
| CN (1) | CN102057243A (en) |
| AU (1) | AU2009237550A1 (en) |
| IL (1) | IL208764A0 (en) |
| RU (1) | RU2010143983A (en) |
| WO (1) | WO2009129517A1 (en) |
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| CN103765153A (en) * | 2011-07-15 | 2014-04-30 | 斯泰伦博斯大学 | Splash grids for rain or spray zones |
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| CN109764435A (en) * | 2018-12-20 | 2019-05-17 | 陕西优斯达环境科技有限公司 | A kind of cooling water cooler cooling system of the evaporation with cold recovery |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20110021783A (en) | 2011-03-04 |
| US20110174003A1 (en) | 2011-07-21 |
| AU2009237550A1 (en) | 2009-10-22 |
| WO2009129517A1 (en) | 2009-10-22 |
| RU2010143983A (en) | 2012-05-27 |
| EP2279386A1 (en) | 2011-02-02 |
| IL208764A0 (en) | 2010-12-30 |
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Application publication date: 20110511 |