CN105783344B - Utilize the air dewetting cooling pretreatment evaporative condenser of solar source - Google Patents
Utilize the air dewetting cooling pretreatment evaporative condenser of solar source Download PDFInfo
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- CN105783344B CN105783344B CN201610158984.5A CN201610158984A CN105783344B CN 105783344 B CN105783344 B CN 105783344B CN 201610158984 A CN201610158984 A CN 201610158984A CN 105783344 B CN105783344 B CN 105783344B
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- air
- evaporative condenser
- cooling device
- level cooling
- main frame
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
- F25B2339/041—Details of condensers of evaporative condensers
Abstract
The invention discloses a kind of air dewetting cooling pretreatment evaporative condenser using solar source, it is characterised in that：Including the one-level cooling device being arranged in order along air-flow direction, two level cooling device and evaporative condenser main frame, solid dehumidifying plate is provided between one-level cooling device and two level cooling device, an air part after one-level cooling device and the cooling of two level cooling device enters evaporative condenser main frame from top and takes away heat with shower water progress hot and humid area, the refrigerant vapour in the condenser coil in evaporative condenser main frame is set to be condensed into liquid, the filler heat exchange layer that another part air enters in condenser main frame from side simultaneously, heat exchange is carried out with filler heat exchange layer, and described solid dehumidifying plate is regenerated using the thermal source of solar energy.
Description
Technical field
The invention discloses a kind of air dewetting cooling pretreatment evaporative condenser using solar source.
Background technology
At present, large-scale freezer refrigeration system is mostly using the evaporative condenser using natural air cooling.It is this cold
Condenser mainly utilizes relative humidity relatively low in natural air, makes water surface evaporation, by molecule diffusion and turbulent diffusion, is formed
The hot and humid area of air and water, water release heat to air, and water temperature reduces；The refrigerant vapour in condenser coil passes through pipe simultaneously
Wall conducts heat releases heat to water, refrigerant vapour is condensed into liquid.Using the evaporative condenser of natural air, there is heat transfer
Efficiency high, water circulation amount is few, it is compact-sized the features such as.But utilize natural air evaporative condenser cooling effect by
Under the influence of natural air relative humidity, particularly summer high temperature high humidity environment, its heat extraction effect is poor, does not reach setting value, system
The condensing pressure of cryogen raises with condensation temperature, declines the COP coefficients of whole refrigeration system；It is cold and summer outdoor temperature is high
Storehouse internal-external temperature difference is big, refrigeration system long operational time, and the operation energy consumption of refrigeration system can be significantly increased.
The content of the invention
In order to solve technical problem existing for prior art, removed the invention discloses a kind of using the air of solar source
Wet cooling pretreatment evaporative condenser.
The technical solution adopted by the present invention is as follows：
Using solar source air dewetting cooling pretreatment evaporative condenser, including along air-flow direction according to
One-level cooling device, two level cooling device and the evaporative condenser main frame of secondary arrangement, one-level cooling device and two level cooling dress
Solid dehumidifying plate is provided between putting, the air part after one-level cooling device and two level cooling device cool down enters steaming from top
Hairdo condenser main frame carries out hot and humid area with shower water and takes away heat, makes in the condenser coil in evaporative condenser main frame
Refrigerant vapour is condensed into liquid, while the filler heat exchange layer that another part air enters in condenser main frame from side, with filling out
Expect that heat exchange layer carries out heat exchange, and described solid dehumidifying plate is regenerated using the thermal source of solar energy.
Further, the bottom of described evaporative condenser main frame is provided with water leg, and described water leg is respectively with one
The medium inlet phase of condenser coil spray equipment at the top of level cooling device, two level cooling device and evaporative condenser main frame
Even, one-level cooling device, the media outlet of two level cooling device and the filler heat exchange layer shower of evaporative condenser main frame enter
Mouth is connected.
Further, the water of described water leg by water circulating pump enter one-level cooling device, two level cooling device with
And the condenser coil spray equipment at the top of evaporative condenser main frame.
Further, described solar source includes heat exchange coil, between the entrance of described heat exchange coil and outlet
Solar energy heat collection pipe is in series with, solar energy heat collection pipe has heating medium with heat exchange coil, and heat exchange coil is arranged on solid dehumidifying again
Regeneration is dried to solid dehumidifying Regenerated plate in the side of raw plate, heat exchange coil heating air, air.
Further, described solid dehumidifying Regenerated plate is arranged on the top of solid dehumidifying plate, solid dehumidifying plate and solid
Regenerated plate dehumidify by motor and chain-driving, timing mutually conversion.
Further, described heat exchange coil is arranged on the top of one-level cooling device, and side is outdoor air inlet, separately
Side is solid dehumidifying Regenerated plate, and outdoor air is discharged after solid dehumidifying Regenerated plate.
Further, described outdoor air after solid dehumidifying Regenerated plate from the heat above two level cooling device
Air outlet slit is discharged.
Further, described one-level cooling device, two level cooling device are cooling coil.
Further, the condenser coil of described evaporative condenser main frame, the side of filler heat exchange layer are provided with water fender.
Further, the air after heat exchange after water fender from the hot-air positioned at evaporative condenser main frame side
Outlet discharge.
The present invention is cooled down by double flash evaporation, and solid dehumidifying system dehumidification of the solar water for thermal source is used between level, right
Inlet air is pre-processed, and reduces inlet air temperature and water capacity, enthalpy reduces, and by enthalpy difference impetus, makes place
Water temperature drop after reason, the condensing pressure and condensation temperature of refrigeration system are reduced, to reach the purpose for reducing refrigeration system energy consumption
Evaporative condenser.
The operation principle of the present invention is as follows：
After outdoor air exchanges heat with the cold water in one-level cooling coil, temperature reduces relative humidity and risen, then passes through solid
Except wet plate constant enthalpy dehumidifies, air humidity content decline temperature rises, and then after two level cooling coil reduces temperature, delivers to evaporation
Formula condenser main frame carries out hot and humid area with shower water and takes away heat, obtains water at low temperature, water at low temperature makes condensation by septate heat transfer
Refrigerant vapour in device pipeline is condensed into liquid.Due to evaporative condenser main frame inlet air temperature and water capacity compared with
Low, relatively low by the water temperature after hot and humid area, the condensation temperature and condensing pressure that can make refrigeration system decline, and reduce refrigeration system
The energy consumption of system.After solid dehumidifying plate moisture absorption, high temperature air section thermal regeneration is gone to, high temperature air is by outdoor air and solar energy
Obtained after hot water heat exchange caused by thermal-collecting tube.Water at low temperature in I and II cooling coil is supplied by water circulating pump, through air plus
Packing area is sprayed to after heat, heat is taken away by carrying out hot and humid area with the evaporative condenser main frame inlet air of low temperature and low humidity
Reduce water temperature.
The air dewetting cooling pretreatment evaporative condenser of superheated refrigerant thermal source driving proposed by the present invention is using upper
Technical scheme is stated, is had the advantages that：
1) outdoor air cools by one-level cooling coil and two level cooling coil, makes the air after processing and natural air
Compare, its wet-bulb temperature significantly reduces, the water temperature Billy after carrying out hot and humid area with the shower water in evaporative condenser main frame
Water temperature after carrying out hot and humid area with natural air significantly reduces, because water temperature reduces, the refrigerant condensation pressure in condenser coil
Power and condensation temperature also decline therewith, and the COP coefficients of whole refrigeration system rise, and specific refrigerating effect power consumption declines.
2) dehumidified using solid dehumidifying plate, decline air humidity content, promote the hot wet friendship in evaporative condenser main frame
Change；Alleviate influence of the natural air relative humidity variations to condensing pressure simultaneously.
3) solar energy is effectively utilized to regenerate solid dehumidifying plate；
4) the air part after one-level cooling device and two level cooling device cool down enters evaporative condenser from top
Main frame carries out hot and humid area with shower water and takes away heat, makes the refrigerant vapour in the condenser coil in evaporative condenser main frame
Liquid, while the filler heat exchange layer that another part air enters in condenser main frame from side are condensed into, is entered with filler heat exchange layer
Row heat exchange, the air that evaporative condenser main frame is entered from top enter in the same direction with shower water, it is ensured that condenser coil
Outer surface moisture film is uniform, and enthalpy difference is uniform between air and the surface saturated air of water, and then improves the effect of heat exchange,
And the filler heat exchange layer entered from side in condenser main frame, enter because filler heat exchange layer is groove-like structure, therefore from side
Air do not interfere with the direction of shower water.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
The structure chart of Fig. 1 present invention；
In figure：1 one-level cooling coil, 2 two level cooling coils, 3 solid dehumidifying plates, 4 water circulating pumps, 5 filler heat exchange layers, 6
Water leg, 7 water fenders, 8 blower fans, 9 condenser coils, 10 spray equipments, 11 solar energy heat collection pipes, 12 hot water and air heat-exchange disk
Pipe, 13 water at low temperature, 14 solid dehumidifying Regenerated plates, 15 air air inlets, 16 air channels.
Embodiment
The present invention is described in detail below in conjunction with the accompanying drawings：
As shown in figure 1, using the air dewetting cooling pretreatment evaporative condenser of solar source, including along air
One-level cooling device, two level cooling device and the evaporative condenser main frame that flow direction is arranged in order, one-level cooling device and
Solid dehumidifying plate 3 is provided between two level cooling device, the air after one-level cooling device and two level cooling device cool down is a part of
Enter evaporative condenser main frame from top and take away heat with shower water progress hot and humid area, make in evaporative condenser main frame
Refrigerant vapour in condenser coil is condensed into liquid, while the filler that another part air enters in condenser main frame from side
Shower water in heat exchange layer 5, with filler heat exchange layer carries out hot and humid area, and described solid dehumidifying plate is the heat using solar energy
Source regeneration.
Evaporative condenser main frame includes condenser coil 9 above and the filler heat exchange positioned at the lower section of condenser coil 9
Layer 5, spray equipment 10 is equipped with condenser coil 9, filler heat exchange layer；It is provided with the side of condensation winding mountain path 9, filler heat exchange layer 5
Water fender 7, the air after heat exchange are discharged after water fender from the hot air outlet positioned at evaporative condenser main frame side,
Blower fan 8 is provided with hot air outlet position.
The bottom of evaporative condenser main frame is provided with water leg 6, and water leg 6 cools down with one-level cooling device, two level respectively
Device is connected with the spray equipment medium inlet at the top of evaporative condenser main frame, and the water at low temperature 13 in water leg 6 enters one
Spray equipment at the top of level cooling device, two level cooling device and evaporative condenser main frame；One-level cooling device, two level cooling
The high temperature water out of device is connected with the filler heat exchange layer spray equipment entrance of evaporative condenser main frame.
The water of water leg enters one-level cooling device and two level cooling device by water circulating pump 4.
Solar source includes hot water and air heat-exchange coil pipe 12, and the sun is in series between the entrance of heat exchange coil and outlet
Can thermal-collecting tube 11, heat exchange coil be arranged on solid dehumidifying plate side, heat exchange coil 12 heat air, air to solid dehumidifying again
Regeneration is dried in raw plate 14.
Heat exchange coil is arranged on the top of one-level cooling device, and side is outdoor air inlet, and opposite side is solid dehumidifying
Regenerated plate 14, and outdoor air is discharged after solid dehumidifying Regenerated plate 14.Outdoor air is after solid dehumidifying Regenerated plate 14
From the hot air outlet discharge above two level cooling device.
Above-mentioned one-level cooling device, two level cooling device are one-level cooling coil 1 and two level cooling coil 2, certainly also
Can be other cooling devices.
Said apparatus is divided with function, it can be divided into：Air pretreatment system, circulation, evaporation cooling master
Machine and solid dehumidifying plate regenerative system.
Air pretreatment system includes：Air air inlet 15, one-level cooling coil, solid dehumidifying plate, two level cooler pan
Pipe and air channel.Outdoor natural air is entered by air air inlet 15, is cooled through one-level cooling coil, is dehumidified by solid dehumidifying plate
Afterwards, then after being cooled by two level cooling coil divide two-way, enter filler heat exchange layer from side all the way, another way enters through upside to be condensed
Coil pipe.It is characterized in that：Solid dehumidifying plate is provided between one-level cooling coil and two level cooling coil, to be dropped in air
Dehumidified while warm, air themperature is declined with humidity, reduce air enthalpy.
Circulation includes water leg 6, water circulating pump 4, one-level cooling coil 1, two level cooling coil 2, condensate pans
Pipe water injector 10, filler heat exchange layer drainage arrangement and water pipe.Cold water divides two-way after being extracted out by water circulating pump 4 from water leg 6, and one
Road cold water is sprayed to condenser coil 9 to condenser coil spray equipment 10, by with air hot and humid area hot and humid area and heat transfer,
After water temperature rises, by filler heat exchange layer 5, again with air hot and humid area, water temperature drop, water leg 6 is finally dropped down onto；Another way
Cold water respectively enters one-level cooling coil 1 and risen with two level cooling coil 2 and temperature after air septate heat transfer, then delivers to filler and change
The water injector of thermosphere 5, filler heat exchange layer 5 is sprayed to, through with after air hot and humid area, water temperature drop, finally dropping down onto water leg.
Its primary object is：Into after one-level cooling coil 1 and the cold water of two level cooling coil 2, with air progress partition-wall heat transfer,
The temperature of air is reduced, and absorbs the heat being discharged into because of dehumidifying in air, the cold water that temperature rises after heat absorption passes through
The spray system being independently arranged is sprayed to filler heat exchange layer 5.
Evaporating cold doubtful device main frame includes condenser coil, filler heat exchange layer 5, water fender 7, blower fan 8 and housing.Cold water is sprayed to
Septate heat transfer is carried out with the refrigerant vapour in condenser coil behind condenser coil surface, after refrigerant vapour is cooled to saturation temperature
Latent heat is released, condenses into refrigerant liquid, carrying out hot and humid area by surface and air while cold water absorbs heat releases heat.Temperature
Spend elevated cold water to continue to drop to filler heat exchange layer 5, carry out hot and humid area with air, temperature drops down onto water leg after declining；Separately
There is part by one-level cooling coil 1 and two level cooling coil 2 and the cold water after the rising of air heat-exchange temperature, be directly sprayed to and fill out
Expect heat exchange layer, carry out hot and humid area with air, temperature drops down onto water leg after declining.Pretreated air divides two-way, passes through all the way
Side is crossed into filler heat exchange layer with after water progress hot and humid area, temperature and humidity rising, being arranged after water fender dash by blower fan
To outdoor；Another way enters condenser coil through upside and after water progress hot and humid area, temperature rises through water fender dash with humidity
Afterwards, outdoor is drained into by blower fan.Present invention increase partial filler heat exchange layer 5, to cool down the cold water for handling inlet air.
The solid dehumidifying plate regenerative system includes：Outside-air intake 15, solar energy heat collection pipe 11, hot water and air
Heat exchange coil 12, solid dehumidifying Regenerated plate, blower fan 8, air channel 16.Outdoor air is through superheated water and air heat-exchange coil pipe 12, and too
Temperature rises after the hot water of the positive the inside of energy thermal-collecting tube 11 crosses septate heat transfer, through solid dehumidifying Regenerated plate, makes solid dehumidifying Regenerated plate
Interior dehumidizer regeneration, after releasing moisture, outdoor is discharged by blower fan 8.It is characterized in that：Solid dehumidifying plate 3 and solid dehumidifying are again
Raw plate 14 is by motor and chain-driving, timing mutually conversion.
The present invention is cooled down by double flash evaporation, and solid dehumidifying system dehumidification of the solar water for thermal source is used between level, right
Inlet air is pre-processed, and reduces inlet air temperature and water capacity, enthalpy reduces, and by enthalpy difference impetus, makes place
Water temperature drop after reason, the condensing pressure and condensation temperature of refrigeration system are reduced, to reach the purpose for reducing refrigeration system energy consumption
Evaporative condenser.
After outdoor air exchanges heat with the cold water in one-level cooling coil 1, temperature reduces relative humidity and risen, then passes through solid
Except the constant enthalpy of wet plate 3 dehumidifies, air humidity content decline temperature rises, and then after two level cooling coil 2 reduces temperature, delivers to steaming
Hairdo condenser main frame carries out hot and humid area with shower water and takes away heat, obtains water at low temperature, water at low temperature is made cold by septate heat transfer
Refrigerant vapour in condenser pipeline is condensed into liquid.Due to evaporative condenser main frame inlet air temperature and water capacity compared with
Low, relatively low by the water temperature after hot and humid area, the condensation temperature and condensing pressure that can make refrigeration system decline, and reduce refrigeration system
The energy consumption of system.After solid dehumidifying plate moisture absorption, high temperature air section thermal regeneration is gone to, high temperature air is removed by outdoor air and solid
Obtained after hot water heat exchange caused by wet plate 3.Water at low temperature in I and II cooling coil 1,2 is supplied by water circulating pump 4, through sky
Packing area is sprayed to after gas heating, is taken away by carrying out hot and humid area with the evaporative condenser main frame inlet air of low temperature and low humidity
Heat reduces water temperature.
Although above-mentioned the embodiment of the present invention is described with reference to accompanying drawing, model not is protected to the present invention
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need to pay various modifications or deformation that creative work can make still within protection scope of the present invention.
Claims (7)
1. utilize the air dewetting cooling pretreatment evaporative condenser of solar source, it is characterised in that：Including along air
One-level cooling device, two level cooling device and the evaporative condenser main frame that flow direction is arranged in order, one-level cooling device and
Be provided with solid dehumidifying plate between two level cooling device, the air part after one-level cooling device and the cooling of two level cooling device from
Top enters evaporative condenser main frame and takes away heat with shower water progress hot and humid area, makes cold in evaporative condenser main frame
Refrigerant vapour in solidifying coil pipe is condensed into liquid, while the filler that another part air enters in condenser main frame from side changes
Shower water in thermosphere, with filler heat exchange layer carries out hot and humid area, and described solid dehumidifying plate is the thermal source using solar energy
Regeneration, the bottom of described evaporative condenser main frame is provided with water leg, described water leg respectively with one-level cooling device,
Two level cooling device is connected with the medium inlet of the condenser coil spray equipment at the top of evaporative condenser main frame, one-level cooling dress
Put, the filler heat exchange layer of the media outlet of two level cooling device and evaporative condenser main frame spray tube inlet is connected, one-level is cold
But device, the media outlet of two level cooling device are connected with the filler heat exchange layer spray tube inlet of evaporative condenser main frame, institute
One-level cooling device, the two level cooling device stated are cooling coil.
2. the air dewetting cooling pretreatment evaporative condenser of solar source, its feature are utilized as claimed in claim 1
It is：Described solar source includes heat exchange coil, and solar energy is in series between the entrance of described heat exchange coil and outlet
Thermal-collecting tube, solar energy heat collection pipe have heat hot water with heat exchange coil, and heat exchange coil is arranged on the side of solid dehumidifying Regenerated plate, changed
Hot coil heats air, and regeneration is dried to solid dehumidifying Regenerated plate in air.
3. the air dewetting cooling pretreatment evaporative condenser of solar source, its feature are utilized as claimed in claim 2
It is：Described solid dehumidifying Regenerated plate is arranged on the top of solid dehumidifying plate, solid dehumidifying plate and solid dehumidifying Regenerated plate by
Motor and chain-driving, timing mutually conversion.
4. the air dewetting cooling pretreatment evaporative condenser of solar source, its feature are utilized as claimed in claim 3
It is：Described heat exchange coil is arranged on the top of one-level cooling device, and side is outdoor air inlet, and opposite side removes for solid
Wet plate, and outdoor air is discharged after solid dehumidifying plate.
5. the air dewetting cooling pretreatment evaporative condenser of solar source, its feature are utilized as claimed in claim 4
It is：Described outdoor air is after solid dehumidifying plate from the hot air outlet discharge above two level cooling device.
6. the air dewetting cooling pretreatment evaporative condenser of solar source, its feature are utilized as claimed in claim 1
It is：The condenser coil of described evaporative condenser main frame, the side of filler heat exchange layer are provided with water fender.
7. the air dewetting cooling pretreatment evaporative condenser of solar source, its feature are utilized as claimed in claim 1
It is：Air after heat exchange is after water fender from the hot air outlet discharge positioned at evaporative condenser main frame side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610158984.5A CN105783344B (en) | 2016-03-18 | 2016-03-18 | Utilize the air dewetting cooling pretreatment evaporative condenser of solar source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610158984.5A CN105783344B (en) | 2016-03-18 | 2016-03-18 | Utilize the air dewetting cooling pretreatment evaporative condenser of solar source |
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| Publication Number | Publication Date |
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| CN105783344A CN105783344A (en) | 2016-07-20 |
| CN105783344B true CN105783344B (en) | 2018-03-30 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002156148A (en) * | 2000-11-17 | 2002-05-31 | Takasago Thermal Eng Co Ltd | Humidifying method for air conditioning |
| CN2893561Y (en) * | 2006-04-27 | 2007-04-25 | 吴家伟 | Evaporating condenser with cooling water spray tube |
| CN201740319U (en) * | 2010-07-30 | 2011-02-09 | 扬州巨人机械有限公司 | Evaporative type condenser |
| CN104613576A (en) * | 2015-01-05 | 2015-05-13 | 江苏科能电力机械有限公司 | Multistage direct evaporation cooling machine set |
| CN205014522U (en) * | 2015-08-04 | 2016-02-03 | 吕智 | Solar energy and indirect evaporation cooling heat recovery fresh air processing machine of dehumidification runner combined type |
| CN205048602U (en) * | 2015-08-06 | 2016-02-24 | 吕智 | Dehumidification runner and indirect evaporation cooling heat recovery fresh air conditioning of heat pump manifold type |
-
2016
- 2016-03-18 CN CN201610158984.5A patent/CN105783344B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002156148A (en) * | 2000-11-17 | 2002-05-31 | Takasago Thermal Eng Co Ltd | Humidifying method for air conditioning |
| CN2893561Y (en) * | 2006-04-27 | 2007-04-25 | 吴家伟 | Evaporating condenser with cooling water spray tube |
| CN201740319U (en) * | 2010-07-30 | 2011-02-09 | 扬州巨人机械有限公司 | Evaporative type condenser |
| CN104613576A (en) * | 2015-01-05 | 2015-05-13 | 江苏科能电力机械有限公司 | Multistage direct evaporation cooling machine set |
| CN205014522U (en) * | 2015-08-04 | 2016-02-03 | 吕智 | Solar energy and indirect evaporation cooling heat recovery fresh air processing machine of dehumidification runner combined type |
| CN205048602U (en) * | 2015-08-06 | 2016-02-24 | 吕智 | Dehumidification runner and indirect evaporation cooling heat recovery fresh air conditioning of heat pump manifold type |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105783344A (en) | 2016-07-20 |
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