CN105783344A - Air dehumidification cooling pretreatment evaporation condenser using solar heat source - Google Patents
Air dehumidification cooling pretreatment evaporation condenser using solar heat source Download PDFInfo
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- CN105783344A CN105783344A CN201610158984.5A CN201610158984A CN105783344A CN 105783344 A CN105783344 A CN 105783344A CN 201610158984 A CN201610158984 A CN 201610158984A CN 105783344 A CN105783344 A CN 105783344A
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- air
- evaporative condenser
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- water
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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
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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
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
- F25B2339/041—Details of condensers of evaporative condensers
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- Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Central Air Conditioning (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention discloses an air dehumidification cooling pretreatment evaporation condenser using a solar heat source. The condenser is characterized by comprising a first-grade cooling device, a second-grade cooling device and an evaporation condenser host machine arranged in sequence in an air flowing direction; a solid dehumidification plate is arranged between the first-grade cooling device and the second-grade cooling device; one part of air cooled by the first-grade cooling device and the second-grade cooling device enters the evaporation condenser host machine from the upper part to perform the heat and humidity exchange with spraying water to take away heat, so that refrigerant steam in a condensation coil in the evaporation condenser host machine is condensed to liquid; meanwhile, the other part of the air enters a filler heat exchange layer in the condenser host machine from the side surface to perform the heat exchange with the filler heat exchange layer; and the solid dehumidification plate is regenerated by using a heat source of solar energy.
Description
Technical field
The invention discloses a kind of air dewetting cooling pretreatment evaporative condenser utilizing solar source.
Background technology
At present, large-scale freezer refrigeration system adopts the evaporative condenser utilizing natural air to cool down mostly.This condenser mainly utilizes relative humidity relatively low in natural air, makes water surface evaporation, is spread by molecule and turbulent diffusion, forms the hot and humid area of air and water, and water releases heat to air, and water temperature reduces；Refrigerant vapour in condenser coil releases heat by tube wall heat transfer to water simultaneously, makes refrigerant vapour condense into liquid.Utilize the evaporative condenser of natural air, there is heat transfer efficiency height, the features such as water circulating load is few, compact conformation.But the cooling effect utilizing the evaporative condenser of natural air is subject to the impact of natural air relative humidity, particularly under summer high temperature high humidity environment, its heat extraction weak effect, do not reach setting value, the condensing pressure of cold-producing medium raises with condensation temperature, makes the COP coefficient of whole refrigeration system decline；And outdoor temperature is high summer, freezer internal-external temperature difference is big, and refrigeration system long operational time, the operation energy consumption of refrigeration system can be significantly increased.
Summary of the invention
In order to solve the technical problem that prior art exists, the invention discloses a kind of air dewetting cooling pretreatment evaporative condenser utilizing solar source.
The technical solution used in the present invention is as follows:
Utilize the air dewetting cooling pretreatment evaporative condenser of solar source, including the one-level chiller being arranged in order along air-flow direction, two grades of chillers and evaporative condenser main frame, it is provided with solid dehumidifying plate between one-level chiller and two grades of chillers, an air part after one-level chiller and two grades of chiller coolings enters evaporative condenser main frame from top and shower water carries out hot and humid area and takes away heat, the refrigerant vapour in the condenser coil in evaporative condenser main frame is made to be condensed into liquid, another part air enters the filler heat exchange layer in condenser main frame from the side simultaneously, heat exchange is carried out with filler heat exchange layer, and described solid dehumidifying plate is that the thermal source utilizing solar energy regenerates.
Further, the bottom of described evaporative condenser main frame is provided with water leg, described water leg is connected with the medium inlet of the condenser coil spray equipment at one-level chiller, two grades of chillers and evaporative condenser main frame top respectively, and one-level chiller, the media outlet of two grades of chillers are connected with the filler heat exchange layer shower entrance of evaporative condenser main frame.
Further, the water of described water leg enters the condenser coil spray equipment at one-level chiller, two grades of chillers and evaporative condenser main frame top by water circulating pump.
Further, described solar source includes heat exchange coil, it is in series with solar energy heat collection pipe between entrance and the outlet of described heat exchange coil, solar energy heat collection pipe and heat exchange coil have and add thermal medium, heat exchange coil is arranged on the side of solid dehumidifying Regenerated plate, heat exchange coil adds hot-air, and solid dehumidifying Regenerated plate is dried regeneration by air.
Further, described solid dehumidifying Regenerated plate is arranged on the top of solid dehumidifying plate, and solid dehumidifying plate and solid dehumidifying Regenerated plate are by motor and chain-driving, and timing is conversion mutually.
Further, described heat exchange coil is arranged on the top of one-level chiller, and side is outdoor air inlet, and opposite side is solid dehumidifying Regenerated plate, and outdoor air is discharged after solid dehumidifying Regenerated plate.
Further, described outdoor air is discharged from the hot air outlet being positioned at above two grades of chillers after solid dehumidifying Regenerated plate.
Further, described one-level chiller, two grades of chillers are cooling coil.
Further, the described condenser coil of evaporative condenser main frame, the side of filler heat exchange layer are provided with water fender.
Further, the air after heat exchange is discharged from the hot air outlet being positioned at evaporative condenser main frame side after water fender.
The present invention is cooled down by double flash evaporation, the solid dehumidifying system dehumidification that inter-stage adopts solar water to be thermal source, inlet air is carried out pretreatment, inlet air temperature and water capacity is made to reduce, enthalpy reduces, and by enthalpy difference impetus, makes the water temperature drop after process, reduce condensing pressure and the condensation temperature of refrigeration system, to reduce the evaporative condenser of the purpose of refrigeration system energy consumption.
The operation principle of the present invention is as follows:
After cold water heat exchange in outdoor air and one-level cooling coil, temperature reduces relative humidity and rises, dehumidify again through solid dehumidifying plate constant enthalpy, air humidity content decline temperature rises, after being then passed through two grades of cooling coils reduction temperature, deliver to evaporative condenser main frame and shower water carries out hot and humid area and takes away heat, obtain water at low temperature, water at low temperature passes through septate heat transfer, makes the refrigerant vapour in condenser tubes be condensed into liquid.Owing to temperature and the water capacity of evaporative condenser main frame inlet air are relatively low, relatively low by the water temperature after hot and humid area, the condensation temperature of refrigeration system and condensing pressure can be made to decline, reduce the energy consumption of refrigeration system.After solid dehumidifying plate moisture absorption, forwarding high temperature air section thermal regeneration to, high temperature air is to obtain after the hot water heat exchange produced by outdoor air and solar energy heat collection pipe.Water at low temperature in I and II cooling coil is supplied by water circulating pump, is sprayed to packing area after air heats, and takes away heat reduction water temperature by carrying out hot and humid area with the evaporative condenser main frame inlet air of low temperature and low humidity.
The air dewetting cooling pretreatment evaporative condenser that the superheated refrigerant thermal source that the present invention proposes drives adopts technique scheme, has the advantages that
1) outdoor air is through one-level cooling coil and two grades of cooling coil coolings, make the air after process compared with natural air, its wet bulb temperature significantly reduces, water temperature Billy after carrying out hot and humid area with the shower water in evaporative condenser main frame carry out hot and humid area with natural air after water temperature significantly reduce, owing to water temperature reduces, cold-producing medium condensing pressure and condensation temperature in condenser coil also decline therewith, and the COP coefficient of whole refrigeration system rises, and specific refrigerating effect power consumption declines.
2) utilize solid dehumidifying plate to dehumidify, make air humidity content decline, promote the hot and humid area in evaporative condenser main frame；Alleviate the impact on condensing pressure of the natural air relative humidity variations simultaneously.
3) it is effectively utilized solar energy solid dehumidifying plate has been regenerated；
4) the air part after one-level chiller and the cooling of two grades of chillers enters evaporative condenser main frame and carries out hot and humid area with shower water and take away heat from top, the refrigerant vapour in the condenser coil in evaporative condenser main frame is made to be condensed into liquid, another part air enters the filler heat exchange layer in condenser main frame from the side simultaneously, heat exchange is carried out with filler heat exchange layer, the air entering evaporative condenser main frame from top enters in the same direction with shower water, can ensure that condenser coil outer surface moisture film is uniform, and enthalpy difference is uniform between the surface saturated air of air and water, and then improve the effect of heat exchange, and enter the filler heat exchange layer in condenser main frame from the side, owing to filler heat exchange layer is groove-like structure, therefore the air entered from the side is without influence on the direction of shower water.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The structure chart of Fig. 1 present invention；
In figure: 1 one-level cooling coil, 2 two grades of cooling coils, 3 solid dehumidifying plates, 4 water circulating pumps, 5 filler heat exchange layer, 6 water legs, 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 coil pipe, 13 water at low temperature, 14 solid dehumidifying Regenerated plates, 15 air air inlets, 16 air channels.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail:
As shown in Figure 1, utilize the air dewetting cooling pretreatment evaporative condenser of solar source, including the one-level chiller being arranged in order along air-flow direction, two grades of chillers and evaporative condenser main frame, it is provided with solid dehumidifying plate 3 between one-level chiller and two grades of chillers, an air part after one-level chiller and two grades of chiller coolings enters evaporative condenser main frame from top and shower water carries out hot and humid area and takes away heat, the refrigerant vapour in the condenser coil in evaporative condenser main frame is made to be condensed into liquid, another part air enters the filler heat exchange layer 5 in condenser main frame from the side simultaneously, hot and humid area is carried out with the shower water in filler heat exchange layer, and described solid dehumidifying plate is that the thermal source utilizing solar energy regenerates.
Evaporative condenser main frame includes condenser coil 9 above and is positioned at the filler heat exchange layer 5 below condenser coil 9, is equipped with spray equipment 10 in condenser coil 9, filler heat exchange layer；Being provided with water fender 7 in the side of condensation winding mountain path 9, filler heat exchange layer 5, the air after heat exchange is discharged from the hot air outlet being positioned at evaporative condenser main frame side after water fender, is provided with blower fan 8 in hot air outlet position.
The bottom of evaporative condenser main frame is provided with water leg 6, water leg 6 is connected with the spray equipment medium inlet at one-level chiller, two grades of chillers and evaporative condenser main frame top respectively, and the water at low temperature 13 in water leg 6 enters into the spray equipment at one-level chiller, two grades of chillers and evaporative condenser main frame top；One-level chiller, two grades of chillers high-temperature water outlet be connected with the filler heat exchange layer spray equipment entrance of evaporative condenser main frame.
The water of water leg enters one-level chiller and two grades of chillers by water circulating pump 4.
Solar source includes hot water and air heat-exchange coil pipe 12, it is in series with solar energy heat collection pipe 11 between entrance and the outlet of heat exchange coil, heat exchange coil is arranged on the side of solid dehumidifying plate, and heat exchange coil 12 adds hot-air, and solid dehumidifying Regenerated plate 14 is dried regeneration by air.
Heat exchange coil is arranged on the top of one-level chiller, 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 discharged from the hot air outlet being positioned at above two grades of chillers after solid dehumidifying Regenerated plate 14.
Above-mentioned one-level chiller, two grades of chillers are one-level cooling coil 1 and two grades of cooling coils 2, certainly can also is that other chiller.
Said apparatus is divided with function, and it can be divided into: air pretreatment system, circulation, evaporative cooling main frame and solid dehumidifying plate regenerative system.
Air pretreatment system includes: air air inlet 15, one-level cooling coil, solid dehumidifying plate, two grades of cooling coils and air channel.Outdoor natural air is entered by air air inlet 15, lowers the temperature through one-level cooling coil, solid dehumidifying plate after dehumidifying, then by point two-way after two grades of cooling coil coolings, a road enters filler heat exchange layer from the side, and another road enters condenser coil through upside.It is characterized in that: between one-level cooling coil and two grades of cooling coils, be provided with solid dehumidifying plate, in order to dehumidify while air cooling-down, make air themperature and humidity all decline, reduce air enthalpy.
Circulation includes water leg 6, water circulating pump 4,1, two grades of cooling coils 2 of one-level cooling coil, condenser coil water injector 10, filler heat exchange layer drainage arrangement and water pipe.Cold water divides two-way after being extracted out from water leg 6 by water circulating pump 4, one road cold water is to condenser coil spray equipment 10, it is sprayed to condenser coil 9, pass through and air hot and humid area hot and humid area and heat transfer, after water temperature rises, through filler heat exchange layer 5, again with air hot and humid area, water temperature drop, finally drops down onto water leg 6；After another road cold water respectively enters one-level cooling coil 1 and two grades of cooling coils 2 and air septate heat transfer, temperature rises, then delivers to the water injector of filler heat exchange layer 5, is sprayed to filler heat exchange layer 5, through with air hot and humid area after, water temperature drop, finally drop down onto water leg.Its primary object is in that: enter the cold water of one-level cooling coil 1 and two grades of cooling coils 2, after carrying out partition-wall heat transfer with air, reduce the temperature of air, and absorbing the heat being discharged in air because of dehumidifying, the cold water that after heat absorption, temperature rises is sprayed to filler heat exchange layer 5 by the spray system being independently arranged.
Evaporating cold is doubted device main frame and is included condenser coil, filler heat exchange layer 5, water fender 7, blower fan 8 and housing.Cold water carries out septate heat transfer with the refrigerant vapour in condenser coil after being sprayed to condenser coil surface, refrigerant vapour releases latent heat after being cooled to saturation temperature, condense into refrigerant liquid, carry out hot and humid area by surface and air while cold water heat absorption and release heat.The cold water that temperature raises continues to drop to filler heat exchange layer 5, carries out hot and humid area with air, and temperature drops down onto water leg after declining；Cold water after separately having part to be risen with air heat-exchange temperature by one-level cooling coil 1 and two grades of cooling coils 2, is directly sprayed to filler heat exchange layer, carries out hot and humid area with air, and temperature drops down onto water leg after declining.Pretreated air divides two-way, and a road is after side enters filler heat exchange layer and water carries out hot and humid area, and temperature rises with humidity, is drained into outdoor by blower fan after water fender dash；Another road is after upside enters condenser coil and water carries out hot and humid area, and temperature rises after water fender dash with humidity, blower fan drain into outdoor.The present invention increases partial filler heat exchange layer 5, in order to cool down the cold water for processing inlet air.
Described solid dehumidifying plate regenerative system includes: outside-air intake 15, solar energy heat collection pipe 11, hot water and air heat-exchange coil pipe 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 after crossing septate heat transfer with the hot water inside solar energy heat collection pipe 11, temperature rises, and through solid dehumidifying Regenerated plate, makes the dehumidizer in solid dehumidifying Regenerated plate regenerate, after releasing moisture, outside by blower fan 8 discharge chamber.It is characterized in that: solid dehumidifying plate 3 and solid dehumidifying Regenerated plate 14 are by motor and chain-driving, and timing is conversion mutually.
The present invention is cooled down by double flash evaporation, the solid dehumidifying system dehumidification that inter-stage adopts solar water to be thermal source, inlet air is carried out pretreatment, inlet air temperature and water capacity is made to reduce, enthalpy reduces, and by enthalpy difference impetus, makes the water temperature drop after process, reduce condensing pressure and the condensation temperature of refrigeration system, to reduce the evaporative condenser of the purpose of refrigeration system energy consumption.
After cold water heat exchange in outdoor air and one-level cooling coil 1, temperature reduces relative humidity and rises, dehumidify again through solid dehumidifying plate 3 constant enthalpy, air humidity content decline temperature rises, it is then passed through after two grades of cooling coils 2 reduce temperature, delivers to evaporative condenser main frame and carry out hot and humid area with shower water and take away heat, obtain water at low temperature, water at low temperature passes through septate heat transfer, makes the refrigerant vapour in condenser tubes be condensed into liquid.Owing to temperature and the water capacity of evaporative condenser main frame inlet air are relatively low, relatively low by the water temperature after hot and humid area, the condensation temperature of refrigeration system and condensing pressure can be made to decline, reduce the energy consumption of refrigeration system.After solid dehumidifying plate moisture absorption, forwarding high temperature air section thermal regeneration to, high temperature air is to obtain after the hot water heat exchange produced by outdoor air and solid dehumidifying plate 3.Water at low temperature in I and II cooling coil 1,2 is supplied by water circulating pump 4, is sprayed to packing area after air heats, and takes away heat reduction water temperature by carrying out hot and humid area with the evaporative condenser main frame inlet air of low temperature and low humidity.
The specific embodiment of the present invention is described in conjunction with accompanying drawing although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme, those skilled in the art need not pay various amendments or deformation that creative work can make still within protection scope of the present invention.
Claims (10)
1. utilize the air dewetting cooling pretreatment evaporative condenser of solar source, it is characterized in that: include the one-level chiller being arranged in order along air-flow direction, two grades of chillers and evaporative condenser main frame, it is provided with solid dehumidifying plate between one-level chiller and two grades of chillers, an air part after one-level chiller and two grades of chiller coolings enters evaporative condenser main frame from top and shower water carries out hot and humid area and takes away heat, the refrigerant vapour in the condenser coil in evaporative condenser main frame is made to be condensed into liquid, another part air enters the filler heat exchange layer in condenser main frame from the side simultaneously, hot and humid area is carried out with the shower water in filler heat exchange layer, and described solid dehumidifying plate is that the thermal source utilizing solar energy regenerates.
2. utilize the air dewetting cooling pretreatment evaporative condenser of solar source as claimed in claim 1, it is characterized in that: the bottom of described evaporative condenser main frame is provided with water leg, described water leg is connected with the medium inlet of the condenser coil spray equipment at one-level chiller, two grades of chillers and evaporative condenser main frame top respectively, and one-level chiller, the media outlet of two grades of chillers are connected with the filler heat exchange layer shower entrance of evaporative condenser main frame.
3. utilize the air dewetting cooling pretreatment evaporative condenser of solar source as claimed in claim 2, it is characterised in that: one-level chiller, the media outlet of two grades of chillers are connected with the filler heat exchange layer shower entrance of evaporative condenser main frame.
4. utilize the air dewetting cooling pretreatment evaporative condenser of solar source as claimed in claim 1, it is characterized in that: described solar source includes heat exchange coil, it is in series with solar energy heat collection pipe between entrance and the outlet of described heat exchange coil, solar energy heat collection pipe and heat exchange coil have heat hot water, heat exchange coil is arranged on the side of solid dehumidifying Regenerated plate, heat exchange coil adds hot-air, and solid dehumidifying Regenerated plate is dried regeneration by air.
5. utilize the air dewetting cooling pretreatment evaporative condenser of solar source as claimed in claim 4, it is characterized in that: described solid dehumidifying Regenerated plate is arranged on the top of solid dehumidifying plate, solid dehumidifying plate and solid dehumidifying Regenerated plate are by motor and chain-driving, and timing is conversion mutually.
6. utilize the air dewetting cooling pretreatment evaporative condenser of solar source as claimed in claim 5, it is characterized in that: described heat exchange coil is arranged on the top of one-level chiller, side is outdoor air inlet, opposite side is solid dehumidifying plate, and outdoor air is discharged after solid dehumidifying plate.
7. utilize the air dewetting cooling pretreatment evaporative condenser of solar source as claimed in claim 1, it is characterised in that: described outdoor air is discharged from the hot air outlet being positioned at above two grades of chillers after solid dehumidifying plate.
8. utilize the air dewetting cooling pretreatment evaporative condenser of solar source as claimed in claim 1, it is characterised in that: described one-level chiller, two grades of chillers are cooling coil.
9. utilize the air dewetting cooling pretreatment evaporative condenser of solar source as claimed in claim 1, it is characterised in that: the described condenser coil of evaporative condenser main frame, the side of filler heat exchange layer are provided with water fender.
10. utilize the air dewetting cooling pretreatment evaporative condenser of solar source as claimed in claim 1, it is characterised in that: the air after heat exchange is discharged from the hot air outlet being positioned at evaporative condenser main frame side after water fender.
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| Application Number | Priority Date | Filing Date | Title |
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| 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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| Application Number | Priority Date | Filing Date | Title |
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| 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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| CN105783344A true CN105783344A (en) | 2016-07-20 |
| CN105783344B 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 |
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| CN105783344B (en) | 2018-03-30 |
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