CN111928515A - Composite heat pump system - Google Patents

Composite heat pump system Download PDF

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Publication number
CN111928515A
CN111928515A CN202010671688.1A CN202010671688A CN111928515A CN 111928515 A CN111928515 A CN 111928515A CN 202010671688 A CN202010671688 A CN 202010671688A CN 111928515 A CN111928515 A CN 111928515A
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CN
China
Prior art keywords
heat
water
pump
electromagnetic valve
heat exchanger
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010671688.1A
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Chinese (zh)
Inventor
赵密升
周超越
刘伟飞
徐维振
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong New Energy Technology Development Co Ltd
Original Assignee
Guangdong New Energy Technology Development Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong New Energy Technology Development Co Ltd filed Critical Guangdong New Energy Technology Development Co Ltd
Priority to CN202010671688.1A priority Critical patent/CN111928515A/en
Publication of CN111928515A publication Critical patent/CN111928515A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B13/00Compression machines, plant or systems with reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00Solar heat collectors specially adapted for particular uses or environments
    • F24S20/40Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B27/00Machines, plant, or systems, using particular sources of energy
    • F25B27/002Machines, plant, or systems, using particular sources of energy using solar energy
    • F25B27/005Machines, plant, or systems, using particular sources of energy using solar energy in compression type systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plant or systems
    • 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
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers

Abstract

The invention discloses a composite heat pump system, which comprises an air source heat pump system and a solar heat exchange system; the air source heat pump system comprises a compressor, a four-way valve, a water side heat exchanger, a throttling device, a fin heat exchanger, a gas-liquid separator and related pipelines; the compressor forms a loop with the gas-liquid separator through the four-way valve and the pipeline; the four-way valve, the water side heat exchanger, the throttling device and the fin heat exchanger are connected in sequence through pipelines to form a loop; the solar heat exchange system comprises a solar heat collecting pipe, a water pump, a heat storage water tank and related pipelines; a heat exchange coil is arranged in the heat storage water tank and connected with the fin heat exchanger in parallel through a pipeline; the water path of the heat storage water tank is connected with the solar heat collecting pipe through a water pump and a related pipeline to form a circulation loop. According to the invention, the solar heat storage water tank is connected with the outdoor fin heat exchanger of the air source heat pump system in parallel, and under the condition of sufficient illumination, the refrigerant absorbs the heat of hot water generated by the solar heat collecting pipe to realize heating.

Description

Composite heat pump system
Technical Field
The invention relates to the technical field of air source heat pumps, in particular to a compound heat pump system.
Background
Air source heat pumps are developed to the present, the energy efficiency of the unit capacity cannot be effectively improved by simply stacking the unit configuration, and people begin to consider more and more to introduce other new energy forms into the air source heat pump system. The combination of an air source and solar energy is one scheme, the prior method is to carry out heat exchange on hot water generated by a solar heat collecting pipe and water in a water-side heat exchanger of an air source heat pump through a solar coil pipe to achieve the purpose of reducing the energy consumption of the air source heat pump, but the efficiency of water-water heat exchange by directly introducing the water in the solar heat collecting pipe into the water-side heat exchanger of the air source heat pump is low, and the heat generated by the solar energy cannot be effectively utilized.
To solve this problem, the present invention is hereby proposed.
Disclosure of Invention
The invention aims to provide a composite heat pump system, which realizes heating by connecting a solar heat storage water tank and an outdoor fin heat exchanger of an air source heat pump system in parallel.
The purpose of the invention can be realized by the following technical scheme:
a composite heat pump system comprises an air source heat pump system and a solar heat exchange system; the air source heat pump system comprises a compressor, a four-way valve, a water side heat exchanger, a throttling device, a fin heat exchanger, a gas-liquid separator and related pipelines; the compressor forms a loop with the gas-liquid separator through the four-way valve and the pipeline; the four-way valve, the water side heat exchanger, the throttling device and the fin heat exchanger are connected in sequence through pipelines to form a loop; the solar heat exchange system comprises a solar heat collecting pipe, a water pump, a heat storage water tank and related pipelines; a heat exchange coil is arranged in the heat storage water tank and connected with the fin heat exchanger in parallel through a pipeline; the water path of the heat storage water tank is connected with the solar heat collecting pipe through a water pump and a related pipeline to form a circulation loop.
Furthermore, a first electromagnetic valve and a first one-way valve are sequentially arranged on a pipeline between the throttling device and the fin heat exchanger.
Furthermore, the solar heat exchange system also comprises a second electromagnetic valve and a second one-way valve, wherein two ends of the second one-way valve are respectively connected with the heat storage water tank and the second electromagnetic valve; the heat exchange coil is connected with the fin heat exchanger, the first electromagnetic valve and the first one-way valve in parallel through the second electromagnetic valve, the second one-way valve and related pipelines.
Further, the heat storage water tank also comprises a water tank temperature sensor.
Further, the water side heat exchanger further comprises a water inlet pipe and a water outlet pipe.
Further, the heating control method of the compound heat pump system comprises the following steps:
s1, opening the first electromagnetic valve, closing the second electromagnetic valve, absorbing the heat in the air by the fin heat exchanger to heat the water in the water side heat exchanger, and turning to S2;
s2, starting the water pump, heating the water in the heat storage water tank by the solar heat collecting pipe after absorbing heat, and turning to S3;
s3, judging whether the temperature of the water tank is more than or equal to T1, if so, turning to S4, and if not, turning to S5;
s4, closing the second electromagnetic valve, opening the first electromagnetic valve and immediately closing the water pump;
s5, judging whether the water temperature of the heat storage water tank is more than or equal to T2, if so, turning to S6, and if not, turning to S7;
s6, closing the first electromagnetic valve, opening the second electromagnetic valve, absorbing the heat of the water in the heat storage water tank by the refrigerant through the heat exchange coil, and then heating the water in the water side heat exchanger;
s7, judging whether the water temperature of the heat storage water tank is less than or equal to T3, if so, turning to S8, and if not, turning to S3;
and S8, closing the second electromagnetic valve, opening the first electromagnetic valve, and closing the water pump after the water pump operates for T4 time.
Further, the refrigeration control method of the compound heat pump system comprises the following steps: and opening the first electromagnetic valve, closing the second electromagnetic valve, and closing the water pump, so that the solar heat exchange system does not participate in heat exchange.
Preferably, T1 is 45 ℃.
Preferably, T2 is 15 ℃.
Preferably, T3 is 0 ℃ and T4 is 10 minutes.
The solar heat storage water tank is connected with the outdoor fin heat exchanger of the air source heat pump system in parallel, and under the condition of sufficient illumination, the refrigerant of the air source heat pump system absorbs the heat of hot water generated by the solar heat collecting pipe to realize heating; under the condition of no illumination, the refrigerant of the air source heat pump system absorbs heat in the air through the fin heat exchanger to realize heating through electromagnetic valve switching.
The invention has the beneficial effects that:
1. according to the invention, the solar heat storage water tank is connected with the outdoor fin heat exchanger of the air source heat pump system in parallel, and under the condition of sufficient illumination, the refrigerant of the air source heat pump system absorbs the heat of hot water generated by the solar heat collecting pipe to realize heating.
2. Under the condition of no illumination, the refrigerant of the air source heat pump system absorbs heat in the air through the fin heat exchanger to realize heating through electromagnetic valve switching.
Drawings
The invention will be further described with reference to the accompanying drawings.
Fig. 1 is a block diagram of the composite heat pump system of the present invention.
Fig. 2 is a flow chart of a heating control method of the compound heat pump system of the invention.
Reference numerals:
1-a compressor; 11-a water pump; 12-a first one-way valve; 13-a second one-way valve; 14-a first solenoid valve; 15-a second solenoid valve; 2-a four-way valve; 3-a gas-liquid separator; 4-a throttling device; 5-a water side heat exchanger; 51-a water inlet pipe; 52-water outlet pipe; 6-a finned heat exchanger; 8-solar heat collecting pipe; 9-a heat storage water tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, a compound heat pump system includes an air source heat pump system and a solar heat exchange system.
The air source heat pump system comprises a compressor 1, a four-way valve 2, a water side heat exchanger 5, a throttling device 4, a fin heat exchanger 6, a gas-liquid separator 3 and related pipelines; the compressor 1 forms a loop with the gas-liquid separator 3 through the four-way valve 2 and a pipeline; the four-way valve 2, the water side heat exchanger 5, the throttling device 4 and the fin heat exchanger 6 are connected in sequence through pipelines to form a loop; the solar heat exchange system comprises a solar heat collecting pipe 8, a water pump 11, a heat storage water tank 9 and related pipelines; the heat storage water tank 9 is internally provided with a heat exchange coil 7, and the heat exchange coil 7 is connected with the fin heat exchanger 6 in parallel through a pipeline; the water path of the heat storage water tank 9 is connected with the solar heat collecting pipe 8 through a water pump 11 and related pipelines to form a circulation loop.
Further, one end of the compressor 1 is connected with the gas-liquid separator 3 through a pipeline, the other end of the compressor is connected with the four-way valve 2 through a pipeline, the other end of the gas-liquid separator 3 is connected with the four-way valve 2 through a pipeline, one end of the water side heat exchanger 5 is connected with the four-way valve 2 through a pipeline, the other end of the water side heat exchanger is connected with the throttling device 4 through a pipeline, the other end of the throttling device 4 passes through the pipeline fin heat exchanger 6, and a first electromagnetic valve 14 and a first one-way valve 12 are sequentially arranged on the pipeline between the throttling device.
The solar heat exchange system further comprises a second electromagnetic valve 15 and a second one-way valve 13, and two ends of the second one-way valve 13 are respectively connected with the heat storage water tank 9 and the second electromagnetic valve 15.
A water tank temperature sensor 10 is arranged in the heat storage water tank 9, and the heat exchange coil 7 is connected with the fin heat exchanger 6, the first electromagnetic valve 14 and the first one-way valve 12 in parallel through a second electromagnetic valve 15, a second one-way valve 13 and related pipelines. The tank temperature sensor 10 is used to detect the temperature of water in the hot water storage tank 9.
The water side heat exchanger 5 further comprises a water inlet pipe 51 and a water outlet pipe 52.
When the unit has heating requirements:
the unit is started to operate, the first electromagnetic valve 14 is opened, the second electromagnetic valve 15 is closed, and the refrigerant in the air source heat pump system flows to the compressor 1, the four-way valve 2, the water side heat exchanger 5, the throttling device 4, the first electromagnetic valve 14, the first one-way valve 12, the fin heat exchanger 6, the four-way valve 2, the gas-liquid separator 3 and the compressor 1; at the moment, the water pump 11 is started, the solar heat collecting pipe 8 absorbs heat to heat water in the heat storage water tank 9, when the water tank temperature sensor 10 detects that the water temperature of the heat storage water tank 9 is larger than or equal to 15 ℃, the first electromagnetic valve 14 is closed, the second electromagnetic valve 15 is opened, and the refrigerant in the air source heat pump system flows to the compressor 1, the four-way valve 2, the water side heat exchanger 5, the throttling device 4, the second electromagnetic valve 15, the second one-way valve 13, the heat exchange coil 7, the four-way valve 2, the gas-liquid separator 3 and the compressor 1. The refrigerant absorbs the heat of the water in the heat storage water tank 9 through the heat exchange coil 7, and heats the water in the water side heat exchanger 5, so that the unit heating function is realized.
The water tank temperature sensor 10 continuously detects the temperature of water in the heat storage water tank 9, when the water tank temperature sensor 10 detects that the temperature of the water tank is less than or equal to 0 ℃, the second electromagnetic valve 15 is closed, the first electromagnetic valve 14 is opened, and the water pump 11 is closed after running for 10 minutes, so that the water in the heat storage water tank 9 is prevented from being frozen due to stopping flowing. The refrigerant flow direction in the air source heat pump system is compressor 1-four-way valve 2-water side heat exchanger 5-throttling device 4-first electromagnetic valve 14-first one-way valve 12-fin heat exchanger 6-four-way valve 2-gas-liquid separator 3-compressor 1. The refrigerant absorbs heat in the air through the fin heat exchanger 6, water in the water side heat exchanger 5 is heated, and the unit heating function is achieved.
When the temperature of the water tank is detected to be more than or equal to 45 ℃ by the water tank temperature sensor 10, the second electromagnetic valve 15 is closed, the first electromagnetic valve 14 is opened, and the water pump 11 is immediately closed, so that system faults caused by overhigh evaporation temperature are prevented. The refrigerant flow direction in the air source heat pump system is compressor 1-four-way valve 2-water side heat exchanger 5-throttling device 4-first electromagnetic valve 14-first one-way valve 12-fin heat exchanger 6-four-way valve 2-gas-liquid separator 3-compressor 1. The refrigerant absorbs heat in the air through the fin heat exchanger 6, water in the water side heat exchanger 5 is heated, and the unit heating function is achieved.
Specifically, the heating control method of the compound heat pump system comprises the following steps:
s1, opening the first electromagnetic valve, closing the second electromagnetic valve, absorbing the heat in the air by the fin heat exchanger to heat the water in the water side heat exchanger, and turning to S2;
s2, starting the water pump 11, heating the water in the heat storage water tank by the solar heat collecting pipe after absorbing heat, and turning to S3;
s3, judging whether the temperature of the water tank is more than or equal to T1, if so, turning to S4, and if not, turning to S5;
s4, closing the second electromagnetic valve 15, opening the first electromagnetic valve 14 and immediately closing the water pump 11;
s5, judging whether the water temperature of the heat storage water tank is more than or equal to T2, if so, turning to S6, and if not, turning to S7;
s6, closing the first electromagnetic valve, opening the second electromagnetic valve, absorbing the heat of the water in the heat storage water tank by the refrigerant through the heat exchange coil, and then heating the water in the water side heat exchanger;
s7, judging whether the water temperature of the heat storage water tank is less than or equal to T3, if so, turning to S8, and if not, turning to S3;
and S8, closing the second electromagnetic valve, opening the first electromagnetic valve, and closing the water pump after the water pump operates for T4 time.
Preferably, T1 is 45 ℃, T2 is 15 ℃, T3 is 0 ℃, and T4 is 10 minutes.
When the unit has refrigeration requirements:
the first electromagnetic valve 14 is opened, the second electromagnetic valve 15 is closed, the water pump 9 is closed, and the solar heat exchange system does not participate in heat exchange.
Namely, the refrigeration control method of the compound heat pump system comprises the following steps: and opening the first electromagnetic valve 14, closing the second electromagnetic valve 15, and closing the water pump 9, so that the solar heat exchange system does not participate in heat exchange.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. The compound heat pump system is characterized by comprising an air source heat pump system and a solar heat exchange system; the air source heat pump system comprises a compressor (1), a four-way valve (2), a water side heat exchanger (5), a throttling device (4), a fin heat exchanger (6), a gas-liquid separator (3) and related pipelines; the compressor (1) forms a loop with the gas-liquid separator (3) through the four-way valve (2) and a pipeline; the four-way valve (2), the water side heat exchanger (5), the throttling device (4) and the fin heat exchanger (6) are connected in sequence through pipelines to form a loop; the solar heat exchange system comprises a solar heat collecting pipe (8), a water pump (11), a heat storage water tank (9) and related pipelines; a heat exchange coil (7) is arranged in the heat storage water tank (9), and the heat exchange coil (7) is connected with the fin heat exchanger (6) in parallel through a pipeline; the water path of the heat storage water tank (9) is connected with the solar heat collecting pipe (8) through a water pump (11) and related pipelines to form a circulation loop.
2. The compound heat pump system according to claim 1, characterized in that a first electromagnetic valve (14) and a first one-way valve (12) are arranged on the pipeline between the throttling device (4) and the finned heat exchanger (6) in sequence.
3. The compound heat pump system according to claim 2, wherein the solar heat exchange system further comprises a second solenoid valve (15) and a second check valve (13), and two ends of the second check valve (13) are respectively connected with the hot water storage tank (9) and the second solenoid valve (15); the heat exchange coil (7) is connected in parallel with the fin heat exchanger (6), the first electromagnetic valve (14) and the first one-way valve (12) through the second electromagnetic valve (15), the second one-way valve (13) and related pipelines.
4. The compound heat pump system according to claim 1, characterized in that the hot water storage tank (9) further comprises a tank temperature sensor (10).
5. The compound heat pump system according to claim 1, wherein the water side heat exchanger (5) further comprises a water inlet pipe (51) and a water outlet pipe (52).
6. The compound heat pump system according to claim 1, wherein the heating control method of the compound heat pump system comprises the steps of:
s1, opening the first electromagnetic valve, closing the second electromagnetic valve, absorbing the heat in the air by the fin heat exchanger to heat the water in the water side heat exchanger, and turning to S2;
s2, starting the water pump, heating the water in the heat storage water tank by the solar heat collecting pipe after absorbing heat, and turning to S3;
s3, judging whether the temperature of the water tank is more than or equal to T1, if so, turning to S4, and if not, turning to S5;
s4, closing the second electromagnetic valve, opening the first electromagnetic valve and immediately closing the water pump;
s5, judging whether the water temperature of the heat storage water tank is more than or equal to T2, if so, turning to S6, and if not, turning to S7;
s6, closing the first electromagnetic valve, opening the second electromagnetic valve, absorbing the heat of the water in the heat storage water tank by the refrigerant through the heat exchange coil, and then heating the water in the water side heat exchanger;
s7, judging whether the water temperature of the heat storage water tank is less than or equal to T3, if so, turning to S8, and if not, turning to S3;
and S8, closing the second electromagnetic valve, opening the first electromagnetic valve, and closing the water pump after the water pump operates for T4 time.
7. The compound heat pump system according to claim 1, wherein the refrigeration control method of the compound heat pump system is: and opening the first electromagnetic valve, closing the second electromagnetic valve, and closing the water pump, so that the solar heat exchange system does not participate in heat exchange.
8. The compound heat pump system of claim 6,
t1 was 45 ℃.
9. The compound heat pump system of claim 6,
t2 was 15 ℃.
10. The compound heat pump system of claim 6, wherein T3 is 0 ℃ and T4 is 10 minutes.
CN202010671688.1A 2020-07-14 2020-07-14 Composite heat pump system Pending CN111928515A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010671688.1A CN111928515A (en) 2020-07-14 2020-07-14 Composite heat pump system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010671688.1A CN111928515A (en) 2020-07-14 2020-07-14 Composite heat pump system

Publications (1)

Publication Number Publication Date
CN111928515A true CN111928515A (en) 2020-11-13

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100586460B1 (en) * 2004-06-15 2006-06-09 (주)뉴그린테크 Hybrid heat-pump system using solar-heat and air-heat
CN202734111U (en) * 2012-08-03 2013-02-13 天津天地源科技发展有限公司 Air source heat pump and solar energy combined air-conditioning system
CN103206807A (en) * 2013-05-03 2013-07-17 广东吉荣空调有限公司 Multi-source heat pump cold and hot water unit integrating solar energy, air energy and sleeve accumulated energy
EP2669585A1 (en) * 2012-06-01 2013-12-04 TEV Limited Solar air source heat pump system
CN104833109A (en) * 2015-05-14 2015-08-12 中国科学院广州能源研究所 Waste heat recovery multiple-heat-source composite type heat pump hot water supply system
CN106016771A (en) * 2016-07-18 2016-10-12 常州海卡太阳能热泵有限公司 Solar air source heat pump triple co-generation system and control method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100586460B1 (en) * 2004-06-15 2006-06-09 (주)뉴그린테크 Hybrid heat-pump system using solar-heat and air-heat
EP2669585A1 (en) * 2012-06-01 2013-12-04 TEV Limited Solar air source heat pump system
CN202734111U (en) * 2012-08-03 2013-02-13 天津天地源科技发展有限公司 Air source heat pump and solar energy combined air-conditioning system
CN103206807A (en) * 2013-05-03 2013-07-17 广东吉荣空调有限公司 Multi-source heat pump cold and hot water unit integrating solar energy, air energy and sleeve accumulated energy
CN104833109A (en) * 2015-05-14 2015-08-12 中国科学院广州能源研究所 Waste heat recovery multiple-heat-source composite type heat pump hot water supply system
CN106016771A (en) * 2016-07-18 2016-10-12 常州海卡太阳能热泵有限公司 Solar air source heat pump triple co-generation system and control method thereof

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