CN101251285A - Indirect evaporation refrigerating method and device capable of generating cold water and cold wind meanwhile - Google Patents
Indirect evaporation refrigerating method and device capable of generating cold water and cold wind meanwhile Download PDFInfo
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- CN101251285A CN101251285A CNA2008101034480A CN200810103448A CN101251285A CN 101251285 A CN101251285 A CN 101251285A CN A2008101034480 A CNA2008101034480 A CN A2008101034480A CN 200810103448 A CN200810103448 A CN 200810103448A CN 101251285 A CN101251285 A CN 101251285A
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- 238000000034 method Methods 0.000 title claims abstract description 81
- 238000001704 evaporation Methods 0.000 title claims abstract description 70
- 230000008020 evaporation Effects 0.000 title claims abstract description 69
- 238000001816 cooling Methods 0.000 claims abstract description 151
- 239000007921 spray Substances 0.000 claims abstract description 40
- 230000000694 effects Effects 0.000 claims description 17
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 229920006395 saturated elastomer Polymers 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
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Abstract
The invention discloses an indirect evaporation cooling method of generating cold water and cold wind at the same time and a device, belonging to the energy technical field and relating to an evaporation cooling type cold supply. Fresh air firstly enters a multistage evaporation cooling type heat recoverer, is performed with a wet cooling by an exhaust air evaporation cooling process, etc., then enters an evaporation cooler which generates the cold water and the cold wind at the same time and is performed with a direct evaporation cooling by contacting spray water; part of outlet air of the evaporation cooler is outputted to a user, while another part of the wind is used as exhaust air which is exhausted outdoor via cooling inlet air during multistage evaporation cooling process. In the evaporation cooler, the cold water is outputted after circulated and cold water of the user is cooled by the spray water and an air evaporation cooling process; a temperature of outlet water is lower than a wet bulb temperature of inlet air. The invention outputs the cold water for the user and the fresh air at a lower temperature at the same time, solves a mismatching of a flow ratio of air and water in a sensible heat transferring process and a heat and moisture exchanging process, and solves the mismatching caused by a non linearity of a saturated line through a multistage device; a cold water side for the user can be a closed system, and application situations for a unit can be more widely.
Description
Technical field
The invention belongs to energy technology field, especially relate to a kind of indirect evaporation refrigerating method and device that produces cold water and cold wind simultaneously of transpiration-cooled cooling.
Background technology
According to the difference of carrying cold medium, use evaporation cooling technique at present and mainly contain dual mode: produce cold wind and produce cold water.The mode of wherein utilizing evaporative cooling to produce cold wind develops early, such as (multistage evaporation refrigerating and air-conditioning (ZL 99259083.3), indirect evaporation refrigerating air conditioner (ZL 99258508.2) etc.), yet when producing cold wind separately, because system can only be an all-air system, the air channel takes up room greatly, blower fan power consumption height, and this has just limited the occasion that evaporation cooling technique is used.In ZL 02100431.5 " a kind of method of indirectly evaporating cold supply and device thereof " report with water for the invention of the indirect evaporation cooling-water machine that carries cold medium and succeed in developing, utilize indirect evaporative cooling technology to produce the cold water of limiting temperature for the air intake dew-point temperature, reduce the power consumption of medium transmission ﹠ distribution significantly, widened the application of evaporation cooling technique greatly.This technology of using indirect evaporation cooling generation cold water successfully must be used in more than ten demonstration project in dry area, northwests such as Chinese Xinjiang at present.
Yet, when application indirect evaporation cooling-water machine produces cold water separately, because the restriction of heat source temperature level, when only sending into indoor end and take away the room sensible heat load such as the cold water that produces, because return water temperature is low, make that cooling-water machine spray water temperature is low, and then the air draft parameter is low, thereby has limited the efficient of utilizing outdoor dry air refrigeration.Simultaneously, owing to adopt the indirect evaporation cooling, there is the wet exchange process of heat between sensible heat transfer process between wind, the water and wind, the water simultaneously.In the wet exchange process of heat, evaporate the process that enters air owing to exist water to absorb the latent heat of vaporization, the temperature and the water content of air all change, and make the equivalent specific heat capacity of humid air with respect to the specific heat capacity increase of the dry and cold process of air.The wet desired wind of exchange process of sensible heat transfer process when satisfying coupling and heat, discharge ratio are inconsistent.And because saturated line non-linear, the equivalent specific heat capacity of water surface saturated moist air raises with the rising of water temperature, makes the same heat exchange process inside of wet should be inconsistent for satisfying wind, the discharge of mating everywhere than also.But because the restriction of existing indirect evaporation cooling-water machine flowage structure, be difficult to solve simultaneously that heat source temperature is low, the flow of sensible heat transfer and the wet exchange process of heat does not match and saturated line non-linear causes problem such as do not match.The present invention is promptly at above-mentioned all kinds of unmatched problems, simultaneously not only needed cold water but also needed the requirement of new wind in conjunction with building, a kind of new method and device-produce the simultaneously indirect evaporation refrigerating method and the device of cold water and cold wind are proposed, extract the mode of cold wind by the centre, make the wet exchange process of sensible heat transfer process and heat satisfy coupling simultaneously, and solve the non-linear of saturated line by multistage structure, thereby increase substantially the efficient of utilizing outdoor dry air refrigeration, further saved the energy.Utilize the device of this invention, can make horizontally, save the space, simultaneously, user's chilled water system also can be made enclosed, thereby thoroughly solves the quality problem that produces cold water, has further widened the application of indirect evaporative cooling technology.
Summary of the invention
The objective of the invention is to propose a kind of indirect evaporation refrigerating method and device that produces cold water and cold wind simultaneously.The described indirect evaporation refrigerating method that produces cold water and cold wind simultaneously, it is characterized in that, implementation procedure is as follows: outdoor new wind at first enters the transpiration-cooled heat regenerator of being made up of n level spray refrigerating module 31, absorb the cold that air draft evaporative cooling process produces, enter devaporizer 2 after being cooled, directly contact with top-down shower water in the devaporizer 2 and to carry out evaporative cooling, the user is delivered in the new wind output as low temperature under the effect of pressure fan 5 of the part of devaporizer 2 air-out, a part is admitted to transpiration-cooled heat regenerator 1 under the effect of exhaust blower 6, through the cooling of n level spraying and sprinkling evaporation, finally be discharged from outdoor successively; In devaporizer 2, user's cold-water return enters devaporizer 2 from the water inlet pipe 14 of air side, absorbs the cold that outside shower water and air evaporation cooling procedure produce, the outlet pipe 13 output cold water of back by devaporizer 2 inlet sides of being lowered the temperature; It is about 3 ~ 5 times of air specific heat capacity in air-water sensible heat transfer process that this method is utilized the humid air equivalence specific heat capacity of the wet exchange process of air-hydro-thermal, for satisfying the coupling of two processes simultaneously, prepares cold water and cold wind simultaneously by the mode of indirect evaporation cooling; The water temperature of output cold water is lower than the wet-bulb temperature of air intake; When the water capacity of outdoor new wind uprised, pressure fan 5 and exhaust blower 6 can be installed between transpiration-cooled heat regenerator 1 and the devaporizer 2,
Described pressure fan 5 and exhaust blower 6 all are provided with frequency converter, regulate the air quantity ratio of the two by the frequency converter of regulating pressure fan and exhaust blower, control water temperature and air-out parameter; Regulate by the air quantity of air-supply and air draft simultaneously, reach and regulate water temperature and air-out state, and adapt to the situation of outdoor new wind working conditions change.
Described transpiration-cooled heat regenerator 1 can be composed in series with n level spray refrigerating module 3, and wherein n desirable 1～10.
Described in transpiration-cooled heat regenerator 1, circulated sprinkling water at air draft side circulated sprinkling, directly contacts with air draft and to carry out evaporative cooling and produce the cooling that cold is used for new wind under the effect of water pump 4;
Every grade of spray refrigerating module 3 can be realized by dual mode in the described transpiration-cooled recuperation of heat, a kind of mode realizes for utilizing the structure that directly sprays module 9 and aerial cooler 8 combinations, air draft contacts with water through direct spray module 9 carries out evaporative cooling generation cold water, sent into aerial cooler 8 by water supply pump 4, cool off the air intake that enters aerial cooler 8; Another kind of mode is to adopt inner-cooled indirect evaporation refrigerating module 12 or n level spray refrigerating module 3 to realize, adjacent air exhaust passage and air intake passage are set in refrigerating module, circulated sprinkling water at the inner spray of air exhaust passage, contact with air draft and to carry out evaporative cooling and cool off the interior air intake of air intake passage under the effect of water supply pump 4.
The described evaporative cooling process that produces cold water and cold wind simultaneously can be realized by dual mode, a kind of mode is the coiled structure of utilizing in the devaporizer, in devaporizer 2, arrange coil pipe 18, user's cold water enters coil pipe 18 from water inlet pipe 14, from outlet pipe 13 output cold water, circulated sprinkling water is spraying under the effect of circulating pump 7 on the coil pipe 18, and the evaporative cooling process that the spray water and air by coil pipe 18 outsides directly contacts is come user's cold water of cooling coil 18 inside; Another kind of mode is to utilize the combining structure of direct evaporative cooling module 19 and plate type heat exchanger 20, in direct evaporative cooling module 19, air directly contacts with spray cold water and carries out evaporative cooling, produce cold water and enter tank 15, the cold water that produces enters user's cold water that plate type heat exchanger 20 cools off opposite side under the effect of circulating pump 7, getting back to direct evaporative cooling module 19 inside from plate type heat exchanger 20 outflows afterwards sprays, user's cold water of plate type heat exchanger opposite side enters from water inlet pipe 14, and the back that is cooled is from outlet pipe 13 output cold water.
A kind of device that produces the indirect evaporation refrigerating of cold water and cold wind simultaneously, it is characterized in that, this device is made up of external-cooling type evaporative cooling heat regenerator and devaporizer, this external-cooling type evaporative cooling heat regenerator connects level Four air draft evaporative cooling module 9 by 4 water supply pumps 4 and corresponding cold water pipeline respectively by level Four aerial cooler 8, every grade of air draft evaporative cooling module 9 tops are provided with spray equipment 11, the inner wet exchange of the heat filler 10 of filling is provided with bottom tank 16 in the bottom; In evaporative cooling recuperation of heat one-level tank, water replanishing device is set, mends the cold water that loses owing to the evaporative cooling process from water compensating valve 17; Outdoor new wind and exhaust outlet are arranged on the inlet side of external-cooling type evaporative cooling heat regenerator 1; Coil pipe 18 upper right sides of devaporizer 2 connect cold-water return water inlet pipe 14, and coil pipe 18 lower-left ends connect output cold water 13, and coil pipe 18 tops are spray equipment 11 fixedly, and coil pipe 18 is following to be shower water tank 15, and circulating pump 7 is connected with spray equipment 11; New wind pressure fan 5 and exhaust blower 6 are connected the air side of devaporizer 2, or between evaporative cooling heat regenerator 1 and the devaporizer 2.
The described indirect evaporation refrigerating device that produces cold water and cold wind simultaneously, can also be the structure of inner-cooled evaporative cooling heat regenerator 1 and devaporizer 2 combinations, its inner-cooled evaporative cooling heat be returned device 1 and is made up of inner-cooled indirect evaporation refrigerating module 12, water supply pump 4, spray equipment 11, bottom tank 16; Water supply pump 4 in the tank 16 of bottom links to each other with spray equipment 11 by water pipe; Fill inner-cooled indirect evaporation refrigerating module 12 between spray equipment 11 and the bottom tank 16.
Above-mentioned two devaporizers 2 that produce roughly the same the time in the indirect evaporation refrigerating device of cold water and cold wind also can be by direct evaporative cooling module 19 by being connected with plate type heat exchanger 20 1 sides by advancing cold water pipe 21 and go out cold water pipe 22, and the plate type heat exchanger opposite side has user's cold-water return water inlet pipe 14 and exports the outlet pipe 13 of user's usefulness cold water.
Described air draft evaporative cooling module 9, directly evaporative cooling module 19, inner-cooled evaporative cooling heat regenerator 1 and devaporizer 2 are installed in respectively in separately the housing.
The present invention is a kind of indirect evaporation refrigerating method and device that produces cold water and cold wind simultaneously, has following advantage and characteristics:
(1) exports the new wind of user simultaneously with cold water and low temperature, solve the wet exchange process of sensible heat transfer process and heat for the wind that satisfies coupling and require, discharge than inconsistent problem, make that the wet temperature-fall period such as grade of new wind and the evaporative cooling process of air draft all satisfy coupling in the transpiration-cooled heat regenerator;
(2) position of output cold wind, it can be the part of air-out that produces the devaporizer of cold water, also can be the part of the air-out of transpiration-cooled heat regenerator, when the air outlet output cold wind of transpiration-cooled heat regenerator, be particularly useful for outdoor wet operating mode;
(3) in the transpiration-cooled heat regenerator, by the transpiration-cooled mode of air draft new wind is carried out precooling, thereby realize that energy of exhaust air reclaims;
(4) the transpiration-cooled heat regenerator can be the external-cooling type structure of aerial cooler with direct evaporative cooling module combinations, also can be the structure of whole inner-cooled indirect evaporation refrigerating module.
(5) produce the module of cold water and cold wind simultaneously, can be inner coil pipe formula devaporizer, also can direct evaporative cooler and the external-cooling type structure that combines of plate type heat exchanger.
(6) the transpiration-cooled heat regenerator can be by the non-linear mismatch problem that causes of multistage device solves saturated line.
(7) described indirect evaporation refrigerating method and the device that produces cold water and cold wind simultaneously can be regulated the leaving water temperature and the cold wind ventilation state of cold water by regulating the air quantity separately and the allocation proportion thereof of cold wind air-supply and air draft.
(8) described indirect evaporation refrigerating method and the device that produces cold water and cold wind simultaneously realized the cold water induction system of enclosed having solved the quality problem that open system may cause.
Description of drawings
Fig. 1 is for producing the indirect evaporation refrigerating method schematic diagram of cold water and cold wind simultaneously.
Fig. 2 is the method schematic diagram that the air-out position of Fig. 1 changes.
Fig. 3 produces the indirect evaporation refrigerating device-external-cooling type evaporative cooling heat regenerator of cold water and cold wind and the schematic diagram of interior cold dish tubular type devaporizer combination simultaneously.
Fig. 4 produces the indirect evaporation refrigerating device-external-cooling type evaporative cooling heat regenerator of cold water and cold wind and the schematic diagram of direct evaporative cooling module, plate type heat exchanger combination simultaneously.
Fig. 5 produces the indirect evaporation refrigerating device-inner-cooled evaporative cooling heat regenerator of cold water and cold wind and the schematic diagram of interior cold dish tubular type devaporizer combination simultaneously.
Fig. 6 produces the indirect evaporation refrigerating unit-inner-cooled evaporative cooling heat regenerator of cold wind and cold water and the schematic diagram of direct evaporative cooling module, plate type heat exchanger combination simultaneously.
The specific embodiment
The present invention proposes a kind of indirect evaporation refrigerating method and device that produces cold water and cold wind simultaneously.Fig. 1, Fig. 2 are for producing the indirect evaporation refrigerating method schematic diagram of cold water and cold wind simultaneously.Its principle is that outdoor new wind at first enters the transpiration-cooled heat regenerator of being made up of n level spray refrigerating module 31, absorb the cold that air draft evaporative cooling process produces, enter devaporizer 2 after being cooled, directly contact with top-down shower water in the devaporizer 2 and to carry out evaporative cooling, the user is delivered in the new wind output as low temperature under the effect of pressure fan 5 of the part of devaporizer 2 air-out, a part is admitted to transpiration-cooled heat regenerator 1 under the effect of exhaust blower 6, through the cooling of n level spraying and sprinkling evaporation, finally be discharged from outdoor successively.In devaporizer 2, user's cold-water return enters devaporizer 2 from the water inlet pipe 14 of air side, absorbs the cold that outside shower water and air evaporation cooling procedure produce, the outlet pipe 13 output cold water of back by devaporizer 2 inlet sides of being lowered the temperature.
Fig. 3～6 are the concrete enforcement device schematic diagram that produces the indirect evaporation refrigerating method of cold water and cold wind simultaneously of the present invention.
The indirect evaporation refrigerating device that produces cold water and cold wind simultaneously of the present invention, can be the device that external-cooling type evaporative cooling heat regenerator and inner disc tubular type devaporizer are formed, as shown in Figure 3, wherein external-cooling type evaporative cooling heat regenerator is made up of level Four aerial cooler 8, level Four air draft evaporative cooling module 9 and corresponding water supply pump 4, every grade of air draft evaporative cooling module 9 tops are provided with spray equipment 11, bottom tank 16 is set below, also connects water compensating valve 17 on the right of bottom tank 16; The air draft evaporative cooling module 9 inner wet exchange of the heat fillers 10 of filling, aerial cooler 8 and air draft evaporative cooling module 9 are corresponding one by one, the delivery port that on the bottom tank 16 of air draft evaporative cooling module 9 bottoms, is provided with, link to each other by water pipe with the water inlet of water supply pump 4, the delivery port of water supply pump 4 links to each other by water pipe with the water inlet of aerial cooler 8, and the water inlet of the delivery port of aerial cooler 8 and air draft evaporative cooling module 9 spray equipments is provided with water pipe and links to each other.Around coil pipe 18 is set, shower water circulating pump 7 is set in devaporizer 2 in devaporizer 2, the delivery port of shower water circulating pump 7 and spray equipment 11 link to each other by water pipe; User's cold-water return enters the water inlet of coil pipe 18 from water inlet pipe 14, the back that is cooled from the delivery port of coil pipe 18 by output cold water pipe 13 output cold water.Air outlet at devaporizer 2 is provided with plenum chamber, new wind pressure fan 5 and exhaust blower 6 are installed in plenum chamber, the air outlet of new wind pressure fan 5 links to each other with new wind air-supply pipeline, and the air outlet of exhaust blower 6 links to each other with the air inlet of the afterbody of air draft evaporative cooling module 9.New wind pressure fan 5 and exhaust blower 6 can be connected the right of devaporizer 2, or between external-cooling type transpiration-cooled heat regenerator and the devaporizer 2.
When using device shown in Figure 3, outdoor air intake is under the driving of new wind pressure fan 5 and exhaust blower 6, at first successively through wet O that is cooled to such as level Four aerial cooler quilts
4State, the cold water that is used for cooling off air intake in aerial cooler 8 are from corresponding air draft evaporative cooling module 9, and under the driving of water supply pump 4, cold water is implemented in the circulation between aerial cooler 8 and the air draft evaporative cooling module 9.O
4The air of state enters the space of the coil pipe 18 of devaporizer 2, carry out the wet exchange of heat fully with the outer shower water of coil pipe, the user's cold water that flow in air and shower water while and the coil pipe 18 carry out the sensible heat exchange, send from devaporizer 2 behind the air quilt cooling humidification itself, wherein a part is directly blown as the cold wind in room under the effect of new wind pressure fan 5 and is exported from unit, another part enters air draft evaporative cooling module 9 under the driving of exhaust blower 6, contact with water by the wet exchange of heat filler 10 and to carry out direct evaporative cooling process and cool off the unit air intake, and air draft self quilt warming and humidifying progressively becomes hot and humid air at last and discharges from unit.And in devaporizer 2, the water of bottom tank 15 is under the effect of shower water circulating pump 7, evenly be sprayed onto the surface of coil pipe 18, make and carry out the wet exchange of heat fully between coil pipe outer air and the shower water, carry out sufficient sensible heat transfer between shower water and the inner coil pipe cold water simultaneously, the spray water flow return flume 15 afterwards, finish the circulation of shower water.In devaporizer 2, user's backwater enters coil pipe 18 from water inlet pipe 14 simultaneously, after extraneous air and shower water cooling, produces the outlet pipe 13 output cold water of cold water from coil pipe 18 outputs.
In devaporizer 2, can there be multiple flow direction relation between air, shower water and user's cold water.When air and shower water are the distributary heat exchange mode, can reduce the losses by mixture that different temperatures water mixes in the tank by increasing the number of circulating pump 7, further reduce the cold water leaving water temperature, improve the efficient of utilizing outdoor dry air.
Fig. 4 is a kind of device schematic diagram that devaporizer 2 is replaced by the external-cooling type structure of directly evaporative cooling module 19 and plate type heat exchanger 20 combinations among Fig. 3.External-cooling type produces the structure of cold water and cold wind and is made up of direct evaporative cooling module 19, plate type heat exchanger 20 and circulating pump 7.Through the air-out after the cooling of external-cooling type evaporative cooling heat regenerator, at first enter direct evaporative cooling module 19, contact the evaporative cooling process of carrying out with shower water, air self is by moistening and lowering temperature, the part of air-out afterwards is admitted to the room as new wind air-supply, and a part is admitted to external-cooling type air draft evaporative cooling heat regenerator as air draft.In direct evaporative cooling module 19, the shower water laggard tank 15 of going into that is cooled, cold water is under the driving of circulating pump 7 in the tank, enter plate type heat exchanger 20 by advancing cold water pipe 21, flow out by going out cold water pipe 22, be admitted to top spray device 11 afterwards and spray, thereby finish the circulation of shower water.The user side cold-water return enters plate type heat exchanger 20 from water inlet pipe 14, is cooled off by opposite side cold water, and the outlet pipe 13 output users from output cold water use cold water at last;
The indirect evaporation refrigerating device that produces cold water and cold wind simultaneously shown in Figure 5 adopts the structure of inner-cooled evaporative cooling heat regenerator 1 and devaporizer 2 combinations, different with the device that adopts external-cooling type evaporative cooling heat regenerator shown in Fig. 3-4 is that the evaporative cooling process of the pre-cold-peace air draft of device air intake realizes by inner-cooled indirect evaporation refrigerating module 12.These internally cooled indirect evaporation refrigerating module 12 as a whole structures, inner distribute two kinds of passages, dry passage and wet channels.Wherein new wind air intake enters dry passage, and air draft enters wet channel.In wet channel, recirculated water carries out circulated sprinkling under the effect of water pump 4, carry out the evaporative cooling process between air draft and the water and produce the new wind that cold cools off the opposite side dry passage, realize the full recuperation of heat of the pre-cold-peace air draft of new wind, last new wind is waited wet cooling step by step, and that air draft is discharged behind the warming and humidifying step by step is outdoor.It is consistent that new wind enters the external-cooling type device of the process of devaporizer 2 and Fig. 3 after by the wet cooling such as evaporative cooling heat regenerator 1 grade of inner-cooled, repeats no more.
In the device of Fig. 5, devaporizer 2, the direct evaporative cooling module of also available external-cooling type 19 realizes with the structure of plate type heat exchanger 20 combinations, as shown in Figure 6.The process that wherein new wind enters in the evaporative cooling heat regenerator 1 of inner-cooled is consistent with the device of Fig. 5, and after 1 precooling of new wind process inner-cooled evaporative cooling heat regenerator, it is consistent with the process and the device shown in Figure 4 of plate type heat exchanger 20 combining structures to enter direct evaporative cooling module 19, all repeats no more.
Fig. 3～device shown in Figure 6, air draft evaporative cooling heat regenerator all can adopt multistage structure, and the circulated sprinkling water yield at different levels can be different, thereby adapt to the non-linear of saturated line, reduce the loss that do not match that causes owing to saturated line is non-linear.And the progression of air draft evaporative cooling heat regenerator can be regulated according to outdoor meteorologic parameter and actual condition of technology and economy.
New wind pressure fan 5 and exhaust blower 6 all are provided with frequency converter, can regulate the ratio of new wind air-supply and air draft by regulating two blower fans frequency converter separately, thereby regulate the leaving water temperature and the cold wind ventilation state of user's cold water.Under the given situation of out door climatic parameter, transfer big air draft ratio, can reduce user's cold water leaving water temperature; And transfer big new wind air-supply ratio, can improve user's cold water leaving water temperature.When air intake became dry, if will guarantee stable user's cold water leaving water temperature, the rotating speed of new wind pressure fan 5 and exhaust blower 6 can be turned down simultaneously, makes when sub-load, when guaranteeing user's cold water temperature, saves the power consumption of unit.
For Fig. 3～device shown in Figure 6, because new wind ventilation state is with respect to the new wind of open-air seasoning, its water capacity increases, consider the degree of drying difference of the outdoor new wind in different regions, under outdoor design point, when producing cold water and cold wind by Fig. 3 ~ shown in Figure 6 device, if when the water capacity of air-supply surpasses indoor comfortable water capacity scope (such as the time) greater than 14g/kg, can be in of the air-supply of output cold wind in the exit of evaporative cooling heat regenerator 1 shown in Figure 2 as new wind.
Can export cold water and cold wind simultaneously by this flow process, thereby satisfy the demand of required cold water of building and the new wind of cooling.Because in the wet exchange process of the heat of empty G﹠W, the temperature and the water capacity of air change simultaneously, the specific heat of humid air equivalence is 3 ~ 5 times of independent sensible heat transfer process air specific heat simultaneously.And the present invention is by entering air draft evaporative cooling module 9 or entering before the inner-cooled indirect evaporation refrigerating module 12 in air draft, export new wind air-supply, make in the wet temperature-fall period such as grade of air draft evaporative cooling process and new wind, the wet exchange process of heat of coupling and the sensible heat transfer process of coupling have been realized respectively, reduce the heat transfer process loss, improve air draft parameter (enthalpy) simultaneously, thereby significantly improved the efficient that whole device utilizes outdoor dry air.
And in the structure of devaporizer 2 or direct evaporative cooling module 19 and plate type heat exchanger 20 combinations, the user side chilled water system can be closed system, user's cold water does not directly contact with air, thereby has thoroughly solved quality problem, and unit can reliable for a long time efficient operation.
The indirect evaporation refrigerating unit that produces cold water and cold wind simultaneously of the present invention, can be by multistage structure, make evaporative cooling heat regenerator 1 and devaporizer 2 air and shower water all can be the heat exchange mode of distributary, whole unit can be horizontal unit, the height of unit reduces, feasible installation is more flexible, and the occasion that unit is used is more extensive.
Claims (9)
1. indirect evaporation refrigerating method that produces cold water and cold wind simultaneously, it is characterized in that, implementation procedure is as follows: outdoor new wind at first enters n level transpiration-cooled heat regenerator (1), absorb the cold that air draft evaporative cooling process produces, enter devaporizer (2) after being cooled, directly contact with top-down shower water in the devaporizer (2) and to carry out evaporative cooling, the user is delivered in the new wind output as low temperature under the effect of pressure fan (5) of the part of devaporizer (2) air-out, a part is admitted to transpiration-cooled heat regenerator (1) under the effect of exhaust blower (6), pass through the evaporative cooling of n level successively, finally be discharged from outdoor; In devaporizer (2), user's cold-water return enters devaporizer (2) from the water inlet pipe (14) of air side, absorb the cold that outside shower water and air evaporation cooling procedure produce, outlet pipe (13) the output cold water of back of being lowered the temperature by devaporizer (2) inlet side; It is about 3 ~ 5 times of air specific heat capacity in air-water sensible heat transfer process that this method is utilized the humid air equivalence specific heat capacity of the wet exchange process of air-hydro-thermal, for satisfying the coupling of two processes simultaneously, prepares cold water and cold wind simultaneously by the mode of indirect evaporation cooling; The water temperature of output cold water is lower than the wet-bulb temperature of air intake; When the water capacity of outdoor new wind uprised, pressure fan (5) and exhaust blower (6) can be installed between transpiration-cooled heat regenerator (1) and the devaporizer (2).
2. according to the described indirect evaporation refrigerating method that produces cold water and cold wind simultaneously of claim 1, it is characterized in that, described pressure fan (5) and exhaust blower (6) all are provided with frequency converter, regulate the air quantity ratio of the two by the frequency converter of regulating pressure fan and exhaust blower, control water temperature and air-out parameter; Regulate by the air quantity of air-supply and air draft simultaneously, reach and regulate water temperature and air-out state, and adapt to the situation of outdoor new wind working conditions change.
3. according to the described indirect evaporation refrigerating method that produces cold water and cold wind simultaneously of claim 1, it is characterized in that the available n level spray refrigerating module of described transpiration-cooled heat regenerator (1) (3) is composed in series, wherein n is 1～10.
4. according to the described indirect evaporation refrigerating method that produces cold water and cold wind simultaneously of claim 1, it is characterized in that, described in transpiration-cooled heat regenerator (1), circulated sprinkling water at air draft side circulated sprinkling, directly contacts with air draft and to carry out evaporative cooling and produce the cooling that cold is used for new wind under the effect of water pump (4).
5. according to the described indirect evaporation refrigerating method that produces cold water and cold wind simultaneously of claim 1, it is characterized in that, every grade of spray refrigerating module 3 can be realized by dual mode in the described transpiration-cooled recuperation of heat, a kind of mode realizes for utilizing the structure that directly sprays the combination of module (9) and aerial cooler (8), air draft contacts with water through direct spray module (9) carries out evaporative cooling generation cold water, sent into aerial cooler (8) by water supply pump (4), cool off the air intake that enters aerial cooler (8); Another kind of mode is to adopt spray refrigerating module (3) or inner-cooled indirect evaporation refrigerating module (12) to realize, adjacent air exhaust passage and air intake passage are set respectively, circulated sprinkling water at the inner spray of air exhaust passage, contact with air draft and to carry out evaporative cooling and cool off the interior air intake of air intake passage under the effect of water supply pump (4).
6. according to the described indirect evaporation refrigerating method that produces cold water and cold wind simultaneously of claim 1, it is characterized in that, the described evaporative cooling process that produces cold water and cold wind simultaneously can be realized by dual mode, a kind of mode is a cold dish tubular type devaporizer structure in utilizing, in devaporizer (2), arrange coil pipe (18), user's cold water enters coil pipe from water inlet pipe (14), from outlet pipe (13) output cold water, circulated sprinkling water is spraying under the effect of water pump (7) on the coil pipe (18), comes the inner user's cold water of cooling coil (18) by the evaporative cooling process that the outside spray water and air of coil pipe (18) directly contacts; Another kind of mode is to utilize the combining structure of direct evaporative cooling module (19) and plate type heat exchanger (20), in direct evaporative cooling module (19), air directly contacts with spray cold water and carries out evaporative cooling, produce cold water and enter tank (15), the cold water that produces enters user's cold water that plate type heat exchanger (20) cools off opposite side under the effect of circulating pump (7), getting back to direct evaporative cooling module (19) inside from plate type heat exchanger (20) outflow afterwards sprays, user's cold water of plate type heat exchanger opposite side enters from water inlet pipe (14), and the back that is cooled is from outlet pipe (13) output cold water.
7. device that produces the indirect evaporation refrigerating of cold water and cold wind simultaneously, it is characterized in that, this device is made up of external-cooling type evaporative cooling heat regenerator and devaporizer, this external-cooling type evaporative cooling heat regenerator connects the level Four direct evaporative cooling module of air draft (9) by 4 water supply pumps (4) and corresponding cold water pipeline respectively by level Four aerial cooler (8), every grade of direct evaporative cooling module of air draft (9) top is provided with spray equipment (11), the inner wet exchange of the heat filler (10) of filling, the bottom is provided with bottom tank (16); In evaporative cooling recuperation of heat one-level, water replanishing device is set, mends the cold water that loses owing to the evaporative cooling process from water compensating valve 17; Outdoor new wind and exhaust outlet are arranged on the inlet side of external-cooling type evaporative cooling heat regenerator (1); Cold dish tubular type evaporative cooling form in devaporizer (2) adopts, connect cold-water return (14) at coil pipe (18) upper right side, coil pipe (18) lower-left end connects output cold water (13), coil pipe (18) top is spray equipment (11) fixedly, below the coil pipe (18) is shower water tank (15), and shower water circulating pump (7) is connected with spray equipment (11); New wind pressure fan (5) and exhaust blower (6) are connected the air side of devaporizer (2), or between external-cooling type transpiration-cooled heat regenerator and the devaporizer (2).
8. device that produces the indirect evaporation refrigerating of cold water and cold wind simultaneously, it is characterized in that, the described indirect evaporation refrigerating device that produces cold water and cold wind simultaneously, can also be the structure of inner-cooled evaporative cooling heat regenerator (1) and devaporizer (2) combination, the water pump (4) in inner-cooled evaporative cooling heat regenerator (1) inner bottom part tank (16) links to each other with spray equipment (11) by water pipe; Fill inner-cooled indirect evaporation refrigerating module (12) between spray equipment (11) and the bottom tank (16).
9. according to claim 7 and the described device that produces the indirect evaporation refrigerating of cold water and cold wind simultaneously of claim 8, it is characterized in that, described devaporizer (2) also can be by direct evaporative cooling module (19) by advancing cold water pipe (21) and go out cold water pipe (22) and be connected with plate type heat exchanger (20) one sides, and the plate type heat exchanger opposite side has the water inlet pipe (14) of user's cold-water return and the output user outlet pipe (13) with cold water.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101034480A CN101251285B (en) | 2008-04-03 | 2008-04-03 | Indirect evaporation refrigerating method and device capable of generating cold water and cold wind meanwhile |
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| CN2008101034480A CN101251285B (en) | 2008-04-03 | 2008-04-03 | Indirect evaporation refrigerating method and device capable of generating cold water and cold wind meanwhile |
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