CN102798181A - Indirect air source heat pump radiant heating system assisted by solar energy - Google Patents

Indirect air source heat pump radiant heating system assisted by solar energy Download PDF

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Publication number
CN102798181A
CN102798181A CN2012100357679A CN201210035767A CN102798181A CN 102798181 A CN102798181 A CN 102798181A CN 2012100357679 A CN2012100357679 A CN 2012100357679A CN 201210035767 A CN201210035767 A CN 201210035767A CN 102798181 A CN102798181 A CN 102798181A
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China
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water
stop valve
input
copper pipe
heat exchanger
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CN2012100357679A
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Inventor
吴金顺
张维亚
潘天泉
潘嵩
魏鋆
崔蕾
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吴金顺
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Priority to CN2012100357679A priority Critical patent/CN102798181A/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/27Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y02A30/272Solar heating or cooling
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/20Solar thermal

Abstract

The invention provides an energy conservation type air source heat pump system relating to a solar thermal collecting device, a heat pump device, a fluorinated water plate type heat exchanger, a radiant heat exchange capillary network, an air conditioner and a circulating water pump. By using the energy conservation type air source heat pump system, the problems that an air source heat pump cannot run normally under the condition that an outdoor evaporator frosts seriously, and the water temperature is too low and the heat is insufficient due to direct hot water heating of a solar thermal collector can be solved. The energy conservation type air source heat pump system has the beneficial effects that the thermal collecting temperature of the solar thermal collector is reduced through the fluorinated water plate type heat exchanger, the thermal collecting efficiency of the solar thermal collector is improved by about 30%; the COP (Coefficient Of Performance) of a heat pump set is improved by 20% at least, the high-grade electric energy is saved; and as the radiant capillary network is used for cooling and heating indoors, the comfort degree of an indoor environment is improved.

Description

A kind of indirect type solar auxiliary air source heat pump radiant heating system
Technical field
The invention belongs to the heat pump technical field, is a kind of energy-saving air source heat pump air-conditioning system that makes full use of solar energy, improves the unit heating efficiency.
Background technology
Along with the day of energy form is becoming tight the energy-conservation vital task that becomes industry-by-industry.And the building energy consumption that accounts for social total energy consumption large percentage becomes one of energy-conservation major part, and wherein the air conditioning and heating energy consumption accounts for about 80% of building energy consumption, is the chief component of building energy consumption.Therefore, practicing thrift the air conditioning and heating energy consumption is the important step of energy-saving and emission-reduction.
At present, solar energy combines the conservation measures of earth source heat pump, air source heat pump and water resource heat pump to begin to use, and has obtained certain achievement.Wherein, the system of solar auxiliary air source heat pump radiant heating is paid attention to by people just gradually, for this type systematic; Improve solar energy utilization rate; Reduce the unit energy consumption, guarantee that the temperature of recirculated water is the difficult point of this system always, main cause is: when water temperature is higher in the solar thermal collector; Collecting efficiency descends, and solar energy utilization rate reduces; In winter, when outside air temperature was low, the outdoor heat exchanger frosting was serious, and air source heat pump is difficult in draw heat in the outdoor air, caused source pump operation heating efficiency lower, and energy consumption raises.Therefore, the traditional direct heat cycles water of solar energy auxiliary air source heat pump heating system is difficult to make full use of solar energy, improves unit efficiency and guarantees circulating water temperature.
As solar auxiliary air source heat pump radiant heating mode, domestic scholars has proposed some new systems, and has carried out experimental study." the air source heat pump assisted solar capillary radiation heating system " of " coal gas and heating power ", in its system, the shared hot water storage tank of solar thermal collector and heat pump by the water in solar thermal collector and the direct heating water tank of heat pump, supplies heating to use.The direct heat cycles water of solar thermal collector carries out heating in this system, and collecting efficiency is lower, greatly reduces solar energy utilization rate, and the heating efficiency of net for air-source heat pump units is lower." configuration of solar energy central hot-water heating system auxiliary thermal source air source heat pump " of " Shanghai railway science and technology "; The master thesis of the Chen Yan of University Of Tianjin " solar auxiliary air source heat pump heating experiment and analog study ", in its system, the direct heating clamber outer air of solar thermal collector, the outdoor air of heating again with the evaporimeter heat exchange.This method has improved the temperature of outdoor air, helps improving the heating efficiency of unit, but can't store more than heat, cause solar energy utilization rate not high, and the specific heat of air is less, the operating condition deficient in stability.
Combine air source heat pump system with respect to traditional solar energy; Indirect type solar auxiliary air source heat pump radiant heating energy conserving system has adopted and fluorine water plate type heat exchanger of outdoor evaporimeter parallel connection, and the indoor air-conditioner is parallelly connected to indoor heating with wall hanging copper capillary tube net.This system can make full use of solar energy, has improved the collecting efficiency of thermal-collecting tube, solves net for air-source heat pump units frosting in winter and heating efficiency problem of lower.
This system mainly is applicable to the winter heating and the summer cooling of the office building of cold district, and daytime in the winter time is when outside air temperature is low; Outdoor evaporimeter frosting is serious; Cause the unit heating efficiency to decline to a great extent, serious can also cause the compressor emergency shutdown protection, can't move.At this moment, to source pump heat is provided by solar thermal collector, the heat that solar thermal collector is accumulated is through fluorine water plate type heat exchanger and cold-producing medium heat exchange.Promptly improved the collecting efficiency of solar thermal collector, improved the heating efficiency of unit again, practiced thrift the high-grade electric energy, environment has been had no negative effect.For the indoor, adopted the copper capillary tube net to carry out radiant heating, reduced condensation temperature and pressure, reduced the compressor power consumption, improved the heating efficiency of unit, simultaneously, also improved the indoor heating comfort level.Therefore, this system is making full use of regenerative resource---in the solar energy, and distinct issues when also having solved conventional air source heat pump and moving in the winter time, and optimized the operating condition of unit, and improved the heating efficiency of unit, practiced thrift the high-grade electric energy.
Summary of the invention
The objective of the invention is to solve traditional solar auxiliary air source heat pump heating system exists as: the problem that solar energy utilization ratio is low, thermal-collecting tube efficient is low, the source pump heating efficiency is low has proposed a kind of indirect type solar auxiliary air source heat pump radiant heating energy conserving system.System features is to adopt winter fluorine water plate type heat exchanger parallelly connected with outdoor evaporimeter, and indoor heat exchanger adopts copper capillary network parallelly connected with air-conditioner.This invention is a kind of air source heat pump system of suitable cold district office type building, and system can satisfy the demand of office building summer cooling, winter heating and annual hot-water supply.
Technical scheme: the present invention is a kind of indirect type solar auxiliary air source heat pump radiant heating energy conserving system, is made up of two cyclic systems: water circulation loop system, cold-producing medium circulation loop system.Water circulation loop system comprises vacuum heat collection pipe, heat collection water tank, venting water replanishing device, circulation line, water pipe heat-insulating layer, stop valve, pipe circle pump, flowmeter, thermocouple, fluorine water plate type heat exchanger, interface pipe fitting and equipment supporter composition.Recirculated water flows into thermal-collecting tube from thermal-collecting tube (23) bottom, flows into heat collection water tank (34) from thermal-collecting tube top, and recirculated water flows out heat-collecting box; Through water pipe stop valve (22), get into pipeline water circulating pump (17), between water pipe stop valve (22) and pipeline water circulating pump (17); A thermocouple (19) is arranged; Recirculated water is from pipeline water circulating pump (17) output, and input fluorine water plate type heat exchanger (15) is exported from fluorine water plate type heat exchanger (15); Input flow rate meter (20); Between fluorine water plate type heat exchanger (15) and flowmeter (20), a thermocouple (18) is arranged, recirculated water is from flowmeter (20) output, through water pipe stop valve (21) input thermal-collecting tube (23); Cold-producing medium circulation loop system comprises: refrigeration unit, four-way change-over valve, room air conditioner, copper capillary tube net, choke valve, fluorine water plate type heat exchanger, outdoor heat exchanger, valve, connecting line, copper pipe heat-insulation layer, interface pipe fitting and equipment supporter are formed.Export from compressor (1) gas outlet; Connect four-way change-over valve (2); Four-way change-over valve (2) output; Input room air conditioner (35) or copper capillary tube net (3) are installed a thermocouple (8) between four-way change-over valve (2) and copper capillary tube net (3), copper pipe stop valve (4) and copper pipe stop valve (6) are installed on the input pipe of copper capillary tube net (3) and room air conditioner (35); In its outlet copper pipe stop valve (5) and copper pipe stop valve (7) are installed; The input port of choke valve (10) connects air-conditioner (35) and copper capillary tube net (3), and delivery outlet connects fluorine water plate type heat exchanger (15) and outdoor heat exchanger (16), and thermocouple (9) is installed in choke valve (10) input port; Fluorine water plate type heat exchanger (15) and outdoor heat exchanger (16) are connected in parallel; Stop valve (11) and stop valve (13) are installed respectively in its input port, at its delivery outlet stop valve (12) and stop valve (14) are installed respectively, the outlet of fluorine water plate type heat exchanger (15) and outdoor heat exchanger (16) connects four-way change-over valve (2).
Concrete implementation method: (one) winter operation operating mode: 1. when outside air temperature is higher than 4 ℃ by day; Water pump in the solar heat-preservation system is not opened; Stop valve (11) and stop valve (12) are closed; Cold-producing medium comes out directly to get into room air conditioner or the heat supply of copper capillary tube net from compressor, and the high pressure liquid refrigerant after the release heat is through the outer evaporimeter heat absorption of choke valve inlet chamber.Because outside air temperature is higher than 4 ℃, the evaporator coil frosting can be not serious, and the decrease in efficiency of unit is not too obvious, and at this moment, unit is in the high effective model operation; 2. when daytime, outside air temperature was lower than 4 ℃; Outdoor evaporimeter frosting is serious; Heat exchange efficiency with air behind the evaporimeter frosting reduces greatly, and unit heating efficiency COP also can reduce greatly, and operation departs from declared working condition; Cause the compressor emergency shutdown protection, serious meeting damages compressor bank or pipe fitting equipment.This moment close chamber outside evaporimeter; Launch the solar heat-preservation system; Promptly open copper pipe stop valve (11) and copper pipe stop valve (12), close copper pipe stop valve (13) and copper pipe stop valve (14), start water circulating pump; Make solar thermal collection system work, the recirculated water in the system in fluorine water plate type heat exchanger with the cold-producing medium heat exchange.At this moment, need only when water gets into fluorine water plate type heat exchanger in the solar energy system and be not less than 12 ℃, unit just is in efficient operational mode.Directly supply the system of floor heating for solar energy heating recirculated water, the hot water temperature will reach about 40 ℃.And for native system, solar thermal collection system is heated to 12 ℃ to water temperature and gets final product, and has so just improved the collecting efficiency of thermal-collecting tube greatly, also improved solar energy utilization rate, and compressor bank also is in efficient operational mode.When cold-producing medium during through fluorine water plate type heat exchanger, close copper pipe stop valve (6) and copper pipe stop valve (7) indoor cold-producing medium only passes through the copper capillary tube net.Because the desired refrigerant temperature of radiant heating is lower than the temperature of cold-producing medium in the room air conditioner, the temperature that suitably reduces cold-producing medium in the capillary network can improve heating efficiency, and helps improving the operational efficiency of unit.(2) operation condition in summer: open copper pipe stop valve (13) and copper pipe stop valve (14), close copper pipe stop valve (11) and copper pipe stop valve (12), cold-producing medium comes out from compressor; Through the covert valve of four-way; Inlet chamber external condenser (16) cold-producing medium gets into choke valve in outdoor condenser cooling back, gets into room air conditioner or copper capillary tube net from choke valve, then; Cold-producing medium flows back to compressor, accomplishes a circulation.In cooling season; Room air conditioner is parallelly connected with the copper capillary tube net, and room air conditioner or copper capillary tube net can move, but can not move simultaneously; That is: 1. close copper pipe stop valve (6) and copper pipe stop valve (7), open copper pipe stop valve (4) and copper pipe stop valve (5); 2. close copper pipe stop valve (4) and copper pipe stop valve (5), open copper pipe stop valve (6) and copper pipe stop valve (7).
Beneficial effect
The present invention contrasts prior art and has following innovative point:
(1) for the outside; Directly supply floor heating system to compare with traditional solar water; Native system is characterized in that having increased fluorine water plate type heat exchanger to the indirect auxiliary thermal source of solar thermal collection system as outdoor evaporimeter as indirect heat exchange equipment;
(2) for the indoor, traditional air-conditioning system has only equipment of room air conditioner, and native system has increased the equipment of indoor copper capillary tube net as cooling and heat supply, the mode that adopts copper capillary tube net and room air conditioner to be connected in parallel.
The present invention contrasts prior art and has following remarkable advantage:
(1) owing to adopted fluorine water plate type heat exchanger as indirect heat exchange equipment, the solar water supply temperature is reduced to present 12 ℃ by original 40 ℃, and solar energy heating efficient has improved 30%, has increased solar energy utilization rate greatly;
(2) recirculated water that adopts solar thermal collector when winter is during as low-temperature heat source, and the mean temperature of recirculated water is 9.5 ℃; When adopting air source as low-temperature heat source, the mean temperature of air is about-1 ℃.Therefore, adopt the operational mode of the recirculated water of solar thermal collector as low-temperature heat source, the temperature of low-temperature heat source has improved 10.5 ℃, and the heating efficiency of source pump has improved 20%;
(3) indoor employing copper capillary tube net carries out radiation heat transfer, and traditional room air conditioner air supply mode blowing feeling is stronger, and comfortableness is poor, adopts the radiation heat transfer mode to significantly improve indoor hot comfort.
Description of drawings
Fig. 1 is a systematic schematic diagram of the present invention
Among the figure: 1. compressor, 2. four-way change-over valve, 3. copper capillary tube net, 4. copper pipe stop valve, 5. copper pipe stop valve; 6. copper pipe stop valve, 7. copper pipe stop valve, 8. thermocouple, 9. thermocouple, 10. choke valve; 11. the copper pipe stop valve, 12. copper pipe stop valves, 13. copper pipe stop valves, 14. copper pipe stop valves, 15. fluorine water plate type heat exchangers; 16. outdoor heat exchanger, 17. pipeline water circulating pumps, 18. thermocouples, 19. thermocouples, 20. flowmeters; 21. the water pipe stop valve, 22. water pipe stop valves, 23. thermal-collecting tubes, 34. heat collection water tanks, 35. air-conditioners
Fig. 2 is solar thermal collection system venting water supplement apparatus sketch map
Among the figure: 24. venting filling pipes, 25. water supply tanks, 26. protection elbows
Fig. 3 is a fluorine water plate type heat exchanger sketch map
Among the figure: 27. refrigerant inlet, 28. refrigerant outlets, 29. circulating water intakes, 30. circulating water outlets
Fig. 4 is indoor copper capillary tube web frame sketch map
Among the figure: 31. feed pipes, 32. liquid back pipes, 33. capillaries.

Claims (12)

1. indirect type solar auxiliary air source heat pump radiant heating energy conserving system; Be mainly used in the heat pump type air conditioner system of cold and severe cold area minimized office type building; It is characterized in that comprising two cyclic systems, i.e. solar energy water circulation loop and cold-producing medium circulation loop:
(1) in the solar energy water circulation loop; The input of the output termination heat collection water tank (34) of thermal-collecting tube (23); The input of the output water receiving pipe stop valve (22) of heat collection water tank (34); The output of water pipe stop valve (22) is taken over the input of road water circulating pump (17), the circulating water intake (29) of the output termination fluorine water plate type heat exchanger (15) of pipeline water circulating pump (17), and the circulating water outlet (30) of fluorine water plate type heat exchanger (15) connects the input of flowmeter (20); The input of the output water receiving pipe stop valve (21) of flowmeter (20); The input of the output termination thermal-collecting tube (23) of water pipe stop valve (21) is installed thermocouple (19) and thermocouple (18) respectively in fluorine water plate type heat exchanger (15) import and export, and whole water loops connects with the PPR pipe;
(2) in the cold-producing medium circulation loop; The input of the output termination four-way change-over valve (2) of compressor (1); The input of the output termination copper pipe stop valve (4) of four-way change-over valve (2) and the input of copper pipe stop valve (6); Copper pipe stop valve (4) output connects copper capillary tube net (3) input; The input of the output termination copper pipe stop valve (5) of copper capillary tube net (3); The output of the output of copper pipe stop valve (5) and copper pipe stop valve (7) all inserts the input of choke valve (10), the input of the output termination air-conditioner (35) of copper pipe stop valve (6), the input of the output termination copper pipe stop valve (7) of air-conditioner (35); Wherein, Copper capillary tube net (3) is parallelly connected with air-conditioner (35), the input of the output termination copper pipe stop valve (11) of choke valve (10) and the input of copper pipe stop valve (13), the refrigerant inlet (27) of the output termination fluorine water plate type heat exchanger (15) of copper pipe stop valve (11); The input of the output termination outdoor heat exchanger (16) of copper pipe stop valve (13); The input of the output termination copper pipe stop valve (12) of the refrigerant outlet (28) of fluorine water plate type heat exchanger (15), the input of the output termination copper pipe stop valve (14) of outdoor heat exchanger (16), fluorine water plate type heat exchanger (15) and outdoor heat exchanger (16) parallel connection; The output of the output of copper pipe stop valve (12) and copper pipe stop valve (14) all connects the input of four-way change-over valve (2); The input of the output termination compressor (1) of four-way change-over valve (2) is installed thermocouple (8) and thermocouple (9) respectively on air-conditioner (35) the import and export house steward parallelly connected with copper capillary tube net (3), whole refrigerant loop connects with copper pipe.
2. the connection device in the water circulation loop as claimed in claim 1 is characterized in that adopting the PPR pipe to connect.
3. water pipe as claimed in claim 2 connects pipeline, it is characterized in that pipeline adds the thick polyurethane material heat-insulation layer of 30mm, and heat-insulation layer twines layer of glass cloth outward as protective layer.
4. in the water circulation loop as claimed in claim 1; Be provided with the venting water replanishing device; See accompanying drawing 2; It is characterized in that said device is installed as the venting filling pipe (24) of a φ 15mm, a water supply tank (25) is arranged, connect a protection elbow (26) on the top of venting filling pipe (24) in the centre of venting filling pipe (24).
5. the thermal-collecting tube (23) that is used for native system as claimed in claim 1 is characterized in that adopting vertical arrangement thermal-collecting tube, and thermal-collecting tube (23) becomes 60 with ground oThe angle, thermal-collecting tube (23) top and bottom connect branch, water collector respectively, and water flows to from downside, and upside flows out.
6. heat collection water tank as claimed in claim 1 (34) is characterized in that said water tank is placed on the front side at water circulating pump.
7. pipeline water circulating pump as claimed in claim 1, it is indoor to it is characterized in that said water pump is installed in, and is placed on the back of heat collection water tank (34), the front of fluorine water plate type heat exchanger (15).
8. fluorine water plate type heat exchanger (15) according to claim 1; It is characterized in that said equipment is 2.0 standard heteropleural heat exchangers; Recirculated water side pipe mouth connects the PPR pipe of φ 20mm, and connected mode is the cutting ferrule loose joint, and refrigerant side connects the copper pipe of φ 10mm; Connected mode adopts the reducing welding, and reducing is: φ 15mm becomes the pipe fitting of φ 10mm.
9. like claim 1 or the said fluorine water of claim 8 plate type heat exchanger (15), it is characterized in that said equipment is parallelly connected with outdoor heat exchanger (16), connected mode all adopts φ 10mm etc. to be welded to connect through threeway.
10. copper capillary tube net (3) according to claim 1; It is characterized in that said equipment is that heteropleural is with the journey connected mode; Every capillary (33) length is 2m, curves S shape, is connected to side by side on the liquid back pipe (32) of feed pipe (31) and φ 12mm of φ 12mm; Welding manner is adopted at two ends, and capillary (33) adopts the copper pipe of φ 3mm to purchase into radiation recuperator.
11. like claim 1 or the said copper capillary tube net of claim 10 (3), it is characterized in that said equipment is parallelly connected with air-conditioner (35), connected mode all adopts φ 10mm etc. to be welded to connect through threeway.
12. cold-producing medium circulation loop as claimed in claim 1 is characterized in that the copper pipe of connection device is all done the insulation processing, heat-insulation layer adopts the thick rubber-plastic insulating insulation material of 30mm.
CN2012100357679A 2012-02-17 2012-02-17 Indirect air source heat pump radiant heating system assisted by solar energy Pending CN102798181A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104154644A (en) * 2014-08-21 2014-11-19 珠海格力电器股份有限公司 Air conditioner
CN111306717A (en) * 2019-12-05 2020-06-19 广东志高暖通设备股份有限公司 Calculation control method for heating capacity of hybrid heat pump system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002031416A (en) * 2000-07-21 2002-01-31 Toshiba Electric Appliance Co Ltd Solar energy collecting apparatus
CN2727650Y (en) * 2004-08-24 2005-09-21 董占云 Anti-freezing vacuum tube solar hot-water tank
CN1945173A (en) * 2006-11-09 2007-04-11 中国科学技术大学 Multiple heat source multifunction solar energy heat pump
CN102213470A (en) * 2010-04-12 2011-10-12 王春刚 Radiation and ventilation combined air-conditioning system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002031416A (en) * 2000-07-21 2002-01-31 Toshiba Electric Appliance Co Ltd Solar energy collecting apparatus
CN2727650Y (en) * 2004-08-24 2005-09-21 董占云 Anti-freezing vacuum tube solar hot-water tank
CN1945173A (en) * 2006-11-09 2007-04-11 中国科学技术大学 Multiple heat source multifunction solar energy heat pump
CN102213470A (en) * 2010-04-12 2011-10-12 王春刚 Radiation and ventilation combined air-conditioning system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104154644A (en) * 2014-08-21 2014-11-19 珠海格力电器股份有限公司 Air conditioner
CN111306717A (en) * 2019-12-05 2020-06-19 广东志高暖通设备股份有限公司 Calculation control method for heating capacity of hybrid heat pump system

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Application publication date: 20121128