CN1532466A - Environment protection energy saving central air conditioner - Google Patents
Environment protection energy saving central air conditioner Download PDFInfo
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- CN1532466A CN1532466A CNA03107846XA CN03107846A CN1532466A CN 1532466 A CN1532466 A CN 1532466A CN A03107846X A CNA03107846X A CN A03107846XA CN 03107846 A CN03107846 A CN 03107846A CN 1532466 A CN1532466 A CN 1532466A
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- heat exchanger
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- evaporative cooling
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Abstract
The present invention relates to air conditioning apparatus, and is especially one environment protecting and energy saving central air conditioner capable of providing fresh air to indoor. The central air conditioner includes casing; blower, heat exchanger, water showering unit and water supply system inside the casing; wind disturbing wet air strainer, pre-cooling indirectly evaporating cooling plate-column heater exchanger with exhaust blower, indirectly evaporating cooling plate-column heater exchanger with air flow channel connected to that of and air flow mixing channel separated from that of the pre-cooling one, directly evaporating cooling plate-column heater exchanger with water blocking board unit, and blower inside a sealed blower chamber and with air exhausting channel to indoor. The present invention has great enthalpy difference between the blown in air and the blown out air, unchanged wind rate, small volume, high heat exchange efficiency, high air quality and great moistening amount.
Description
Technical field
The invention belongs to the apparatus of air conditioning, particularly to the indoor environmental protection and energy saving air-conditioner that new wind is provided.
Background technology
In dry, hot area, to the indoor room conditioning that new wind is provided, a kind of is directly cooling air-conditioner of simple recirculated water evaporation; As: ZL215566.9, " energy-conservation sweat cooling whole fresh wind air-condition device ", the core body of this air-conditioner is to assemble by the core body sheet of sandwich tape folding waveform is stacked, spray pipe is equipped with in its top, drainpipe, water inlet pipe, overflow pipe, immersible pump are equipped with in the core body below, and air conditioner casing has air inlet and air outlet.The outdoor air of introducing when air-introduced machine is during by core body (heat exchanger), and the shower water of heat exchanger top sprays into heat exchanger, and contact with air-flow in the heat exchanger and to carry out the caloic exchange, makes the air realization humidifying cooling of introducing.More suitable in xeothermic area.Regulate room air owing to handle air, do not use fluorine Lyons, so atmospheric ozone layer is not produced destruction with recirculated water evaporative cooling.Both protect the outside atmosphere environment, protected indoor air environment again.
Its weak point is that the air handled of this air-conditioner is less from the enthalpy difference that the air draft of blowing forms, and the gas flow temperature in its exit is higher, finish air-conditioned room and discharge waste heat, surplus wet task, will be with more air capacity.Because air output is bigger, must cause blower fan big, duct dimension is big, and fan vibration and noise are also big.
Also have a kind of recirculated water evaporation indirect refrigeration air-conditioner, its heat exchanger is carried out cross-laminated with identical gradient by the multilayer corrugated plate, and the mutual interlock of dual-side forms gas channel and the water stream channel that does not communicate with each other.Send into water and send into wind by water-spray system respectively to two passages respectively from different directions by air-introduced machine, water and wind cross flow one in heat exchanger, water and wind carry out the caloic exchange indirectly by heat exchanger, make the wet coolings such as air realization of introducing, the air cleaner that its import department installs is made of nonwoven.Its weak point is that air is bigger through the resistance of corrugated plate-type heat exchangers, and heat transfer efficiency is low, and the volume of air-conditioner is big, and it is big to take up room.The resistance of air cleaner is big, and air filter efficiency is low.
Summary of the invention
The object of the present invention is to provide a kind of environmental protection and energy saving air-conditioner, the advantage that not only has direct Evaporative Cooling Air Conditioning device and indirect evaporation cooling air conditioner, and can strengthen the enthalpy difference of air-supply and air draft, do not increase air quantity, make the volume of air-conditioner little, the efficiency of damp and hot exchanging height of heat exchanger, air humidification amount after treatment is little, the air filter efficiency height.
The bright purpose of this law is achieved in that a kind of environmental protection and energy saving air-conditioner, be included in the blower fan of installing in the casing, direct evaporative cooling heat exchanger and indirect evaporation cooling heat exchanger, spray water system is being installed above the heat exchanger and water pump and the cyclic water tank that supplies water to water pipeline is being set below heat exchanger, be positioned at the precooling room fishplate bar pillar heat exchanger of casing air inlet one side, its air inlet place is installed with wind and stirs wet-type cleaner, the gas channel of the gas channel of the indirect evaporative cooling plate column type of precooling heat exchanger and indirect evaporation coldplate pillar heat exchanger is connected as a single entity, and be divided into two parts up and down by horizontal parting bead, the top seal on the indirect evaporative cooling plate column type of precooling heat exchanger gas channel top, the top on indirect evaporation coldplate pillar heat exchanger gas channel top communicates with spray chamber, both mixed flow passages are spaced from each other, the outlet of between its underpart is left, giving a dinner for a visitor from afar, the indirect evaporative cooling plate column type of precooling heat exchanger top be provided with between the exhaust outlet place that gives a dinner for a visitor from afar exhaust blower is installed, the lower stream of airflow passage of indirect evaporation coldplate pillar heat exchanger is communicated with direct evaporative cooling plate column type heat exchanger, place, gas outlet at direct evaporative cooling plate column type heat exchanger is installed with water baffle plate device, at the indoor pressure fan that is installed with of seal fan that is communicated with direct evaporative cooling plate column type heat exchanger gas outlet, the exhausting duct of pressure fan leads to indoor.
The operation principle of air-conditioner of the present invention is: the method with cooling indirectly reduces the temperature that enters the outdoor air of indirect evaporation coldplate pillar heat exchanger to get off earlier, what realize in this process wet cooling such as is,, remove to do indirect cooling medium (give a dinner for a visitor from afar) and remove to cool off another part outdoor air through behind the moistening and lowering temperature with a part of outdoor air.Its course of work is: outdoor air enters the indirect evaporation plate pillar of precooling heat exchanger, carry out pre-cooled earlier, the outside air temperature that enters the indirect evaporative cooling plate column type of precooling heat exchanger is reduced 6-8 ℃, enter indirect evaporation coldplate pillar heat exchanger then, 6-8 ℃ of wet cooling such as indirect cooling, at this moment, since the outdoor wind of cutting apart wet coolings such as making of horizontal parting bead be divided into the direct wind of bottom and top between give a dinner for a visitor from afar, between give a dinner for a visitor from afar and enter spray chamber from the top on indirect evaporation coldplate pillar heat exchanger gas channel top, turn back from spray chamber again and enter the mixed flow passage of indirect evaporation coldplate pillar heat exchanger downwards, from the outlet of giving a dinner for a visitor from afar between its underpart, enter the mixed flow passage of the indirect evaporative cooling plate column type of precooling heat exchanger, this moment, the direct wind of gas channel bottom was given a dinner for a visitor from afar between the mixed flow passage and the shower water cooling, give a dinner for a visitor from afar between after the heat exchange by top be provided with between the give a dinner for a visitor from afar exhaust blower at exhaust outlet place discharge outdoor, the direct wind that is cooled enters direct evaporative cooling plate column type heat exchanger humidifying cooling at last to apparatus dew point, sends into air-conditioned room by pressure fan again.The plate column type heat exchanger is fixing by the cylindrical tube series connection by having laminated aluminium foil plate at interval, surface plate is little to the resistance of air-flow, cylindrical tube makes and plays the support fixation effect between the plane, also current, air-flow are played the flow-disturbing effect, promptly destroy the laminar boundary layer of fluid, make laminar flow become turbulent flow, thereby improved the efficiency of damp and hot exchanging of heat exchanger.
In process of the test, the outdoor air amount of getting by wet coolings such as indirect evaporation plate column type heat exchanger quilts is V
1, get again and regulate a part and be V through the air capacity of trickle moistening and lowering temperature (give a dinner for a visitor from afar)
2, work as V
1=V
2The time, under this ratio, can make behind the trickle humidification cooling air exit temp at t
2About=22 ℃, this temperature and outdoor air dry-bulb temperature t
wCompare for=34.1 ℃, not very too high.Though this moment, humid air relative humidity reached about 90%, went the higher outdoor air of temperature is carried out pre-cooled again with this part humid air, utilized the energy fully, the heat exchange efficiency of raising air-conditioner.In addition, this part humid air has passed through the trickle dedusting, and is cleaner, can not pollute heat-transfer area, improved the heat exchange effect of heat exchanger.Outdoor air carries out direct evaporative cooling again through after the indirect cooling, make it reach apparatus dew point after, send into air-conditioned room again, take away the room waste heat, surplusly drain after wet.We find that in experiment general relative humidity is all lower when outdoor temperature raises, and each department are incomplete same certainly.When outdoor temperature raise, relative humidity reduced, as works as t in the area, Urumchi
wIn the time of 〉=35 ℃, about φ ≈ 15%-12%, these characteristics are applied on the Evaporative Cooling Air Conditioning device, just make indirect evaporation cooling and the directly supply and exhaust enthalpy difference increasing of the air-conditioner of evaporative cooling combination, thereby air output is reduced.Air-conditioner of the present invention is that precooling zone adds that indirect cooling section adds direct cooling section and combine, and then can make air output reduce one times, and therefore air-conditioner volume of the present invention is little, the heat exchange efficiency height.
The air inlet place of the air-conditioner of the present invention indirect evaporative cooling plate column type of precooling heat exchanger of air inlet one side in its casing is installed with wind and stirs wet-type cleaner, the water smoke and the dust laden air collision opportunity of water injection system ejection are increased, the rotation wind of tuyere ejection simultaneously makes and contains water flow and constantly change its direction of motion, reaching increases the chance of collision mutually, improve efficiency of dust collection, dust removal efficiency is reached more than 99%.Because the place, gas outlet at direct evaporative cooling plate column type heat exchanger is installed with water baffle plate device, when making the air-conditioning wind that reaches apparatus dew point pass through water baffle plate device, water smoke in the air-conditioning wind is run into water baffle plate device and is worked as, reduced the humidity in the air-conditioning wind, made the air humidification amount after air-conditioner of the present invention is handled little.
Description of drawings
Fig. 1 removes the plan structure schematic diagram of top cover and spray water system for the present invention, Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1, Fig. 3 is the B-B sectional structure schematic diagram of Fig. 1, Fig. 4 is the C-C sectional structure schematic diagram of Fig. 2, Fig. 5 is the D-D sectional structure schematic diagram of Fig. 2, Fig. 6 is a tuyere sectional structure schematic diagram, and Fig. 7 is the structural representation of water fender, and Fig. 8 is the air heater structural representation that has rotating shaft.
The specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing, as Fig. 1, Fig. 2, shown in Figure 3, a kind of environmental protection and energy saving air-conditioner, be included in the blower fan of installing in the casing, direct evaporative cooling heat exchanger and indirect evaporation cooling heat exchanger, changeing spray water system and water pump and the cyclic water tank that supplies water to water pipeline is being set below heat exchanger in peace above the heat exchanger, be positioned at the indirect evaporation plate pillar of the precooling heat exchanger device 3 of casing 1 air inlet 13 1 sides, its air inlet place is installed with wind and stirs wet-type cleaner, wind stirs wet-type cleaner for the uniform sparge pipe 12 that nozzle is housed is being set in metal cloth filter 10 the place aheads, the uniform airduct that tuyere 11 is housed is installed between metal cloth filter 10 and sparge pipe 12, as shown in Figure 6, the endoporus of tuyere 11 has the tapered opening 20 to external diffusion, the uniform helix groove 21 that is being provided with on tapered opening 20 inwalls.When air communication is crossed the helix groove 21 of tapered opening 20, produce rotation wind.Under the moving situation of gas mixing, accelerate the movement velocity of dust laden air and constantly changed the direction of motion, increased the collision opportunity of dust laden air with the water spray water droplet, on metal screen, form moisture film, dust laden air is with inertial collision and gas diffusion effect, caught by water droplet, moisture film and bubble, washed to rhone by water.As Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, the gas channel 15 of the indirect evaporative cooling plate column type of precooling heat exchanger 3 is connected as a single entity with the gas channel 17 of indirect evaporation coldplate pillar heat exchanger 4, and be divided into two parts up and down by horizontal parting bead 27, the top seal on the indirect evaporative cooling plate column type of precooling heat exchanger 3 gas channels 15 tops, the top on indirect evaporation coldplate pillar heat exchanger 4 gas channels 17 tops communicates with spray chamber, both mixed flow passages 14,16 are spaced from each other, between its underpart is left, give a dinner for a visitor from afar and export 19, the indirect evaporative cooling plate column type of precooling heat exchanger 3 tops be provided with between the exhaust outlet place that gives a dinner for a visitor from afar exhaust blower 2 is installed, enter in the indirect evaporative cooling plate column type of the precooling heat exchanger 3 between give a dinner for a visitor from afar, after fore-cooling room's outer air, be discharged to outdoor by exhaust blower 2.The gas channel 17 of indirect evaporation coldplate pillar heat exchanger 4 bottoms is communicated with direct evaporative cooling plate column type heat exchanger 5.Indirect evaporation coldplate pillar heat exchanger 4 is the stacked hydrophilic aluminium foil plate group that has the interval mutually, connect by uniform metal tube on its aluminium foil plate face, affixed relatively being assembled together, its dual-side and the both sides up and down staggered sealing in space respectively form obstructed each other horizontal gas flow passage 17 and vertical mixed flow passage 16.Directly evaporative cooling plate column type heat exchanger 5 is the stacked hydrophilic aluminium foil plate group that has the interval mutually, connect by uniform metal tube on its aluminium foil plate face, affixed relatively being assembled together, metal tube are copper pipe, and the mutual interval of stacked hydrophilic aluminium foil plate forms water, gas mixed flow passage 18.Because the plate column type heat exchanger is stacked by aluminium foil plate space, plane, by metal tube relative fixed assembled in series together, metal tube one has been to playing series connection and supporting role between the aluminium foil plate; The 2nd, gas, water are played the flow-disturbing effect, thereby improve heat, wet exchange efficiency.Dull and stereotyped aluminium foil plate is compared its resistance with corrugated plating little, the heat exchange efficiency height, and power of fan is little, energy savings.Place, gas outlet at direct evaporative cooling plate column type heat exchanger 5 is installed with water baffle plate device 6, as shown in Figure 7, water baffle plate device 6 is in water fender framework 22, the uniform broken line shape wind deflector 23 of fixing, the trend of wind deflector 23 is consistent with wind direction, staggered uniform close branch water baffle plate 24 on 23 of broken line shape wind deflectors.Progressively adjust the interval S=10-12mm that determines between the wind deflector 23 through experiment, when wind speed reached 3.0m/s, the dash effect was best.Be provided with rhone in water baffle plate device 6 bottoms, the water that water baffle plate device 6 keeps off is in time got rid of.With seal fan chamber 8 that direct evaporative cooling plate column type heat exchanger 5 gas outlets are communicated with in pressure fan 9 is installed, the exhausting duct of pressure fan 9 leads to indoor.The heater 7 of band door-hinge is installed at the opposite side of water baffle plate device 6, as shown in Figure 8, the heater 7 of band door-hinge is a spiral heater, and the water inlet pipe and water outlet pipe of spiral heater is installed in the door-hinge cover 25 as central siphon 26, and central siphon 26 is tightly connected pipeline extension device and heat supply pipeline by sleeve pipe.To close with the heater 7 that rotates door-hinge in the time of in the winter time, and, make heater 7 heat radiations heat air-conditioning wind, for air-conditioned room send hot blast by spiral heater by the heat supply pipeline heat supply.When the same day, heat need not be sent hot blast, band is rotated the heater 7 of door-hinge and open, air-conditioning wind is directly passed through, send into air-conditioned room.
Claims (7)
1. environmental protection and energy saving air-conditioner, be included in the blower fan of installing in the casing, direct evaporative cooling heat exchanger and indirect evaporation cooling heat exchanger, spray water system is being installed above the heat exchanger and water pump and the cyclic water tank that supplies water to water pipeline is being set below heat exchanger, it is characterized in that: the precooling room fishplate bar pillar heat exchanger (3) that is positioned at casing (1) air inlet (13) one sides, its air inlet place is installed with wind and stirs wet-type cleaner, the gas channel (15) of the indirect evaporative cooling plate column type of precooling heat exchanger (3) is connected as a single entity with the gas channel (17) of indirect evaporation coldplate pillar heat exchanger (4), and be divided into two parts up and down by horizontal parting bead (27), the top seal on the indirect evaporative cooling plate column type of precooling heat exchanger (3) gas channel (15) top, the top on coldplate pillar heat exchanger (4) gas channel (17) top communicates with spray chamber indirectly, both mixed flow passages (14,16) be spaced from each other, the outlet (19) of between its underpart is left, giving a dinner for a visitor from afar, the indirect evaporative cooling plate column type of precooling heat exchanger (3) top be provided with between the exhaust outlet place that gives a dinner for a visitor from afar exhaust blower (2) is installed, the gas channel (17) of indirect evaporation coldplate pillar heat exchanger (4) bottom is communicated with direct coldplate pillar heat exchanger (5), place, gas outlet at direct evaporative cooling plate column type heat exchanger (5) is installed with water baffle plate device (6), with seal fan chamber (8) that direct evaporative cooling plate column type heat exchanger (5) gas outlet is communicated with in pressure fan (9) is installed, the exhausting duct of pressure fan (9) leads to indoor.
2. environmental protection and energy saving air-conditioner according to claim 1, it is characterized in that: indirect evaporation coldplate pillar heat exchanger (4) is the stacked hydrophilic aluminium foil plate group that has the interval mutually, connect by uniform metal tube on its aluminium foil plate face, affixed relatively being assembled together, its dual-side and the both sides up and down staggered sealing in space respectively form obstructed each other horizontal gas flow passage (17) and vertical mixed flow passage (16).
3. environmental protection and energy saving air-conditioner according to claim 1, it is characterized in that: directly evaporative cooling plate column type heat exchanger (5) is the stacked hydrophilic aluminium foil plate group that has the interval mutually, connect by uniform metal tube on its aluminium foil plate face, affixed relatively being assembled together, metal tube is a copper pipe, and the mutual interval of stacked hydrophilic aluminium foil plate forms water, gas mixed flow passage (18).
4. environmental protection and energy saving air-conditioner according to claim 1, it is characterized in that: wind stirs wet-type cleaner in metal cloth filter (10) the place ahead the uniform sparge pipe (12) that nozzle is housed to be set, and between metal cloth filter (10) and sparge pipe (12) the uniform airduct that tuyere (11) are housed is installed.
5. environmental protection and energy saving air-conditioner according to claim 1 is characterized in that: the endoporus of tuyere (11) has the tapered opening (20) to external diffusion, the uniform helix groove (21) that is being provided with on tapered opening (20) inwall.
6. environmental protection and energy saving air-conditioner according to claim 1, it is characterized in that: water baffle plate device (6) is in water fender framework (22), the uniform broken line shape wind deflector (23) of fixing, the trend of wind deflector (23) is consistent with wind direction, staggered uniform close branch water baffle plate (24) on broken line shape wind deflector (23) face.
7. environmental protection and energy saving air-conditioner according to claim 1, it is characterized in that: the heater (7) that the band door-hinge is installed at the opposite side of water baffle plate device (6), the heater (7) of band door-hinge is a spiral heater, the water inlet pipe and water outlet pipe of spiral heater is installed in the door-hinge cover (25) as central siphon (26), and central siphon (26) is tightly connected pipeline extension device and heat supply pipeline by sleeve pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA03107846XA CN1532466A (en) | 2003-03-22 | 2003-03-22 | Environment protection energy saving central air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA03107846XA CN1532466A (en) | 2003-03-22 | 2003-03-22 | Environment protection energy saving central air conditioner |
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| CN1532466A true CN1532466A (en) | 2004-09-29 |
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| CNA03107846XA Pending CN1532466A (en) | 2003-03-22 | 2003-03-22 | Environment protection energy saving central air conditioner |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101162100B (en) * | 2006-10-11 | 2012-06-27 | 于向阳 | Cross-current composite indirect evaporation cooling air processor |
| CN102539108A (en) * | 2012-01-06 | 2012-07-04 | 合肥通用机械研究院 | Energy-saving wind tunnel for enthalpy potential method experiment device |
| CN103398431A (en) * | 2013-07-23 | 2013-11-20 | 于向阳 | Distributed fresh air supply air-conditioning method and air conditioner |
| CN103453602A (en) * | 2013-08-10 | 2013-12-18 | 新疆绿色使者干空气能源有限公司 | Tall-big-packing direct-evaporation refrigerating air conditioning unit |
| CN104819536A (en) * | 2015-05-08 | 2015-08-05 | 西安工程大学 | Heat recovery air conditioning unit combining evaporative cooling with heat pipe and heat pump |
| CN105920960A (en) * | 2016-06-15 | 2016-09-07 | 高境 | Method and system for removing fine particulate matters from aerosol |
| CN106068437A (en) * | 2014-03-13 | 2016-11-02 | 施耐德电气It公司 | Water collection system for indirect evaporation cooler |
| CN108826462A (en) * | 2018-07-12 | 2018-11-16 | 郑州大学 | A kind of air cleaning unit and method based on mobile vehicle |
| CN109340911A (en) * | 2018-11-21 | 2019-02-15 | 珠海格力电器股份有限公司 | A kind of indoor unit, air-conditioning system and control method |
| CN114000908A (en) * | 2021-11-08 | 2022-02-01 | 中国矿业大学 | Modularized air cooler for underground tunnel or tunnel and use method |
| CN114000908B (en) * | 2021-11-08 | 2024-05-07 | 中国矿业大学 | Modularized air cooler for underground tunnel or tunnel and use method |
-
2003
- 2003-03-22 CN CNA03107846XA patent/CN1532466A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101162100B (en) * | 2006-10-11 | 2012-06-27 | 于向阳 | Cross-current composite indirect evaporation cooling air processor |
| CN102539108A (en) * | 2012-01-06 | 2012-07-04 | 合肥通用机械研究院 | Energy-saving wind tunnel for enthalpy potential method experiment device |
| CN102539108B (en) * | 2012-01-06 | 2014-07-23 | 合肥通用机械研究院 | Energy-saving wind tunnel for enthalpy potential method experiment device |
| CN103398431A (en) * | 2013-07-23 | 2013-11-20 | 于向阳 | Distributed fresh air supply air-conditioning method and air conditioner |
| CN103453602B (en) * | 2013-08-10 | 2016-03-23 | 新疆绿色使者干空气能源有限公司 | The direct evaporation refrigeration air conditioner group of tall and big filler |
| CN103453602A (en) * | 2013-08-10 | 2013-12-18 | 新疆绿色使者干空气能源有限公司 | Tall-big-packing direct-evaporation refrigerating air conditioning unit |
| CN106068437A (en) * | 2014-03-13 | 2016-11-02 | 施耐德电气It公司 | Water collection system for indirect evaporation cooler |
| US9970719B2 (en) | 2014-03-13 | 2018-05-15 | Schneider Electric It Corporation | Water collection system for indirect evaporative cooler |
| CN106068437B (en) * | 2014-03-13 | 2018-12-04 | 施耐德电气It公司 | Water collection system for indirect evaporation cooler |
| US10317151B2 (en) | 2014-03-13 | 2019-06-11 | Schneider Electric It Corporation | Water collection system for indirect evaporative cooler |
| CN104819536A (en) * | 2015-05-08 | 2015-08-05 | 西安工程大学 | Heat recovery air conditioning unit combining evaporative cooling with heat pipe and heat pump |
| CN104819536B (en) * | 2015-05-08 | 2017-11-10 | 西安工程大学 | The heat recovery air conditioner unit that evaporation cooling is combined with heat pipe, heat pump |
| CN105920960A (en) * | 2016-06-15 | 2016-09-07 | 高境 | Method and system for removing fine particulate matters from aerosol |
| CN108826462A (en) * | 2018-07-12 | 2018-11-16 | 郑州大学 | A kind of air cleaning unit and method based on mobile vehicle |
| CN109340911A (en) * | 2018-11-21 | 2019-02-15 | 珠海格力电器股份有限公司 | A kind of indoor unit, air-conditioning system and control method |
| CN114000908A (en) * | 2021-11-08 | 2022-02-01 | 中国矿业大学 | Modularized air cooler for underground tunnel or tunnel and use method |
| CN114000908B (en) * | 2021-11-08 | 2024-05-07 | 中国矿业大学 | Modularized air cooler for underground tunnel or tunnel and use method |
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