CN204880849U - Energy storage of tape unit tool straighten formula of driving wind energy heat pump system - Google Patents
Energy storage of tape unit tool straighten formula of driving wind energy heat pump system Download PDFInfo
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- CN204880849U CN204880849U CN201520531652.8U CN201520531652U CN204880849U CN 204880849 U CN204880849 U CN 204880849U CN 201520531652 U CN201520531652 U CN 201520531652U CN 204880849 U CN204880849 U CN 204880849U
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- Y—GENERAL 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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model relates to an energy storage of tape unit tool straighten formula of driving wind energy heat pump system, including wind energy conversion system, mechanical energy memory, jet -propelled enthalpy compressor, four -way reversing valve, refrigerant - water heat exchanger I, refrigerant - air heat exchanger, refrigerant - water heat exchanger II, one -level expansion valve and the compound expansion valve of increasing, machinery energy memory with the wind energy conversion system is connected, jet -propelled increase the enthalpy compressor by the drive of machinery energy memory, adjustment four -way reversing valve can make heat pump system be in and heat and freeze two types. The utility model discloses an energy storage of tape unit tool straighten formula of driving wind energy heat pump system adopts wind energy conversion system direct drive heat pump, and the conversion process's energy conversion loss has improved wind energy utilization efficiency in the middle of can reducing effectively, and mechanical energy memory exports changeable problem then solved wind -force, reaches the purpose that improves system efficiency and operational reliability.
Description
Technical field
The utility model relates to a kind of wind energy heat pump system, particularly a kind of direct-drive type wind energy heat pump system with mechanical energy storage.
Background technology
THE WIND ENERGY RESOURCES IN CHINA is enriched, and has the prospect large-scale developed and utilized.Wind-powered electricity generation plays an important role in China's energy supply, but due to wind-powered electricity generation be motive power with natural wind, therefore wind power system presents intermittence, fluctuation and acyclic feature.Therefore wind-electricity integration also has influence on stability and the quality of power supply of electrical network, causes system energy supply imbalance, fluctuation appears in voltage and the series of problems such as flickering, system frequency appearance skew.
China severe cold area and cold district belong to winter heating area, mainly comprise Heilungkiang, Jilin, Liaoning, Xinjiang, Qinghai, Gansu, Ningxia, the Inner Mongol, Hebei, Shanxi, Beijing, Tianjin and North Shaanxi, Northern Shandong, the north, Henan etc., nearly more than 90 hundred million square metres of these Regional City construction area total amounts.Tibet also belongs to cold plateau area, but not universal concentrated supply of heating in the city facility.The regional heating of Northern Part of China is the industry of a high energy consumption traditionally, and along with the quickening of urbanization process and urban population growth speed, urban heat supplying demand is in quick growth, and China's central heating also exists larger breach.
And China's winter heating area belongs to the abundant area of wind energy or the comparatively abundant area of wind energy mostly, the direct-drive type wind energy heat pump system of band mechanical energy storage is adopted then to avoid the stability problem affecting electrical network that wind-electricity integration causes, in addition, wind-force Direct driver heat pump is adopted to carry out heat supply, effectively can reduce the energy conversion loss of intermediate conversion process, improve wind energy utilization efficiency, fill up China's heat supply breach.
At present, the representative patent utilizing wind energy to drive heat pump to carry out heat supply has the heating system of wind-force heating (Chinese publication publication number CN101619871A), a kind of wind energy heat pump unit (application publication number CN102261767A), energy storage type wind power generation refrigerating and heating systems (application publication number CN102287963A).
Existing Chinese utility model patent number is the heating system of (CN101619871A) wind-force heating, wind energy system is utilized to be mechanical energy by Wind resource change, by pyrogenicity device, mechanical energy is converted to heat energy, send into heat reservoir, start auxiliary heating system when heat energy is not enough and meet heat supply.But the pyrogenicity device in this patent is rubbed by the water in stirring vane and container to produce heat, and mechanical energy is converted to heat energy, and conversion efficiency is low, the science not meeting " temperature counterpart, cascade utilization " can principle.
Existing application publication number is (CN102261767A) a kind of wind energy heat pump unit, utilize the compressor of wind energy Direct driver source pump, eliminate generating intermediate link, but off-premises station evaporimeter is by cooling tower and outdoor air indirect heat exchange in this patent, when the temperature of the surroundings is low, source pump heating efficiency is on the low side.
Existing application publication number is (CN102287963A) energy storage type wind power generation refrigerating and heating systems, Wind resource change is utilized to become mechanical energy to drive air compression system, high pressure gas storage is stored in gas cylinder, generate electricity via air driven motor drive electrical generators again, the pressurization utilizing air compression system to be formed supplies heat effect, heat energy needed for supply water heater, electric furnace or room heater system.But heating refrigeration in this patent is utilize gas compression and gas expansion refrigeration, and system energy efficiency is low.
Utility model content
For the shortcoming and defect of above-mentioned prior art, the utility model aims to provide a kind of direct-drive type wind energy heat pump heating system with mechanical energy storing device, adopt wind energy conversion system Direct driver heat pump, effectively can reduce the energy conversion loss of intermediate conversion process, improve wind energy utilization efficiency, mechanical energy storing device then solves wind-force and exports changeable problem, reaches the object improving system effectiveness and operational reliability.
Problem described in the utility model is solved by following scheme:
A kind of direct-drive type wind energy heat pump system with mechanical energy storage, comprise wind energy conversion system, mechanical energy storing device, air injection enthalpy-increasing compressor, four-way change-over valve, cold-producing medium-water-to-water heat exchanger I, refrigerant-air heat exchanger, cold-producing medium-water-to-water heat exchanger II, one-stage expansion valve and compound expansion valve, it is characterized in that
Described mechanical energy storing device is connected with described wind energy conversion system, and described air injection enthalpy-increasing compressor is driven by described mechanical energy storing device,
Described air injection enthalpy-increasing compressor comprises bottom air entry I, middle part air entry II and exhaust outlet, and described cold-producing medium-water-to-water heat exchanger I, II includes refrigerant side part and water side part,
Described four-way change-over valve comprises four interfaces, be respectively interface I, interface II, interface III and interface IV, wherein, interface I is communicated with through refrigerant line one end with the refrigerant side part of described cold-producing medium-water-to-water heat exchanger II, interface II is communicated with through refrigerant line one end with the refrigerant side part of described cold-producing medium-water-to-water heat exchanger I, and interface III, interface IV are communicated with the exhaust outlet of described air injection enthalpy-increasing compressor, middle part air entry II respectively;
One end of the refrigerant side part of described cold-producing medium-water-to-water heat exchanger I is communicated with the interface II of described four-way change-over valve, the other end is communicated with one end of described one-stage expansion valve, the other end of described one-stage expansion valve is communicated with two refrigerant flow paths in parallel, one of them refrigerant flow path is communicated with the bottom air entry I of described air injection enthalpy-increasing compressor after the refrigerant side part of described compound expansion valve, described refrigerant-air heat exchanger, and another refrigerant flow path is communicated with the interface IV of described four-way change-over valve through the refrigerant side part of described cold-producing medium-water-to-water heat exchanger II.
Preferably, described wind energy conversion system adopts Horizontal-shaft windmill.Mainly comprise wind wheel, pitch-controlled system, gear-box, brakes, yaw system, control system, pylon etc., compared with existing wind energy conversion system, wind energy conversion system in the utility model eliminates generating link, decrease pilot process energy conversion loss, also make fuselage weight and cost greatly reduce, improve efficiency and the economy of wind energy conversion system.Wind energy conversion system just uses as the driving power of native system, and therefore, the utility model simplifies wind energy conversion system.
Preferably, described air injection enthalpy-increasing compressor adopts rotary or vortex.This compressor increases the life-span of compressor and the heating performance of unit by air injection enthalpy-increasing technology, in the outlet of one-stage expansion valve, refrigerant fluid is divided into two-way, one tunnel enters the middle part air entry II of compressor scroll plate after entering cold-producing medium-water-to-water heat exchanger evaporation, make up compressor poor inspiration; Another road enters the evaporation of refrigerant-air heat exchanger after compound expansion valve two-step throttle, enters the bottom air entry I of compressor scroll plate afterwards.
Preferably, described mechanical energy storing device adopts spiral power spring storaging energy device.Spiral power spring storaging energy mainly comprises power shaft, change-speed gearing, clockwork spring, output shaft etc.When wind energy conversion system rotates, by belt, wind energy conversion system kinetic energy is passed to the power shaft of mechanical energy storing device, power shaft by reduction gearing by kinetic energy storage in clockwork spring, and the energy in clockwork spring exports from output shaft as power.
Preferably, the two ends of the water side part of described cold-producing medium-water-to-water heat exchanger I are communicated with user's circulating water line.
Preferably, the two ends of the water side part of described cold-producing medium-water-to-water heat exchanger II are communicated with heat source water circulation line.
Preferably, described cold-producing medium-water-to-water heat exchanger II can according to local concrete condition, and selectively thermal source or solar energy are as thermal source.
Preferably, the two ends of the refrigerant side part of described refrigerant-air heat exchanger are provided with control valve.
Preferably, the direct-drive type wind energy heat pump system of band mechanical energy storage of the present utility model, when the thermal source selecting solar energy as cold-producing medium-water-to-water heat exchanger II, then system only heats one; When the thermal source selecting soil as cold-producing medium-water-to-water heat exchanger II, then system comprises the two kinds of patterns that heat and freeze.
Further, when described direct-drive type wind energy heat pump system is in heating mode, control valve on ownership refrigerant circuit is all in opening, the interface II of described four-way change-over valve is communicated with interface III, the interface I of described four-way change-over valve is communicated with interface IV, the higher pressure refrigerant gas that described air injection enthalpy-increasing compressor is discharged enters one-stage expansion valve after described four-way change-over valve passes into described cold-producing medium-water-to-water heat exchanger I and user's recirculated water carries out heat exchange, be divided into two-way afterwards, one tunnel enters described refrigerant-air heat exchanger after compound expansion valve expands further, another road enters cold-producing medium-cold-producing medium-water-to-water heat exchanger II, described refrigerant-air heat exchanger exit refrigerant gas enters the air entry I of air injection enthalpy-increasing compressor, described cold-producing medium-water-to-water heat exchanger II exports refrigerant gas after four-way change-over valve, enters air injection enthalpy-increasing compressor air suction mouth II.
Further, when described direct-drive type wind energy heat pump system is in refrigeration mode, the interface II of described four-way change-over valve is communicated with interface IV, the interface I of described four-way change-over valve is communicated with interface III, the control valve at the refrigerant side part two ends of described refrigerant-air heat exchanger is in closed condition, described air injection enthalpy-increasing compressor outlet refrigerant gas after four-way change-over valve, enter described cold-producing medium-water-to-water heat exchanger II and soil carries out heat exchange, the cold-producing medium that described cold-producing medium-water-to-water heat exchanger II exports enters described cold-producing medium-water-to-water heat exchanger I after described one-stage expansion valve expands, air injection enthalpy-increasing compressor air suction mouth II is entered through four-way change-over valve after carrying out heat exchange with user's recirculated water.
Direct-drive type wind energy heat pump system of the present utility model adopts air injection enthalpy-increasing technology, build composite heat power supply air injection enthalpy-increasing heat pump, the refrigerant gas evaporation endothermic at a lower temperature of refrigerant-air evaporimeter, the refrigerant gas evaporation endothermic at relatively high temperatures of cold-producing medium-water evaporimeter, air injection enthalpy-increasing compressor sucks the refrigerant gas from cold-producing medium-water evaporimeter, improve the capacity of compressor, there is higher heating capacity.Under outdoor temperature-15 DEG C of conditions, produce 65 DEG C of heating hot waters, heating efficiency reaches more than 3.0, solves the difficult problem that conventional air source heat pump system low temperature environment heating capacity is little, heating efficiency is low.
The direct-drive type wind energy heat pump system of Novel belt mechanical energy storage of the present utility model, be applicable to China severe cold area and cold district, higher heating efficiency can also be obtained under outdoor temperature-15 DEG C of conditions, when selecting soil as thermal source, system can start respectively with summer in the winter time and heats and refrigeration mode, under heating mode, cold-producing medium-water-to-water heat exchanger heat-obtaining from soil, under refrigeration mode, cold-producing medium-water-to-water heat exchanger is to heat extraction in soil, the amount of unbalance of suction heat is regulated by refrigerant-air heat exchanger, solve ground source heat pump soil suction thermal unbalance problem, and ensure that unit Effec-tive Function.
The direct-drive type wind energy heat pump system of Novel belt mechanical energy storage of the present utility model, in a heating mode, air injection enthalpy-increasing compressor outlet refrigerant gas enters one-stage expansion valve after condenser condenses, be divided into two-way afterwards, one tunnel enters refrigerant-air evaporimeter after compound expansion valve expands further, another road enters cold-producing medium-water evaporimeter, the evaporating temperature of refrigerant-air evaporimeter is-20 DEG C, from soil, the evaporating temperature of the cold-producing medium-water evaporimeter of heat-obtaining is 7 DEG C, from solar thermal collector, the evaporating temperature of the cold-producing medium-water evaporimeter of heat-obtaining is 30 DEG C, after evaporation endothermic, refrigerant-air evaporator outlet refrigerant gas enters low pressure compressor, cold-producing medium-water evaporimeter outlet refrigerant gas enters high pressure compressor after four-way change-over valve.
The direct-drive type wind energy heat pump system of band mechanical energy storage of the present utility model, in cooling mode, air injection enthalpy-increasing compressor outlet refrigerant gas enters cold-producing medium-water condenser after four-way change-over valve, after through one-stage expansion valve expand after enter cold-producing medium-water evaporimeter, evaporator outlet refrigerant gas enters air injection enthalpy-increasing compressor after four-way change-over valve.
Compared with the existing technology, the direct-drive type wind energy heat pump system of band mechanical energy storage of the present utility model adopts wind energy conversion system Direct driver heat pump, effectively can reduce the energy conversion loss of intermediate conversion process, improve wind energy utilization efficiency, mechanical energy storing device then solves wind-force and exports changeable problem, reaches the object improving system effectiveness and operational reliability.
Accompanying drawing explanation
The direct-drive type wind energy heat pump system heating condition schematic diagram of Fig. 1 band mechanical energy storage of the present utility model;
The direct-drive type wind energy heat pump cooling system operating mode schematic diagram of Fig. 2 band mechanical energy storage of the present utility model;
Fig. 3 mechanical energy storing device schematic diagram of the present utility model.
Detailed description of the invention
One or more specific embodiment of the present utility model will be described below.These described embodiments are only of the present utility model illustrating.In addition, describe these embodiments for the sake of simplicity, the actual all features realized may all not describe in the present note.Should be understood that, in the exploitation that any this reality realizes, identical with in any engineering or design object, in order to realize the specific objective of developer, many specific implementation judgements must be carried out, such as obey related system restriction and relative commercial restriction, many specific implementation judge that being implemented to another kind of realization from one can change.In addition, it should be understood that this development may be complicated and is consuming time, but however, development is still for benefiting from those of ordinary skill of the present disclosure the regular works being engaged in design, assembling and manufacture.
Referring to Fig. 1, the direct-drive type wind energy heat pump system of band mechanical energy storage of the present utility model comprises wind energy conversion system 1, belt pulley 2-1, belt pulley 2-2, mechanical energy storing device 3, shaft coupling 4, air injection enthalpy-increasing compressor 5, four-way change-over valve 6, cold-producing medium-water-to-water heat exchanger 7, one-stage expansion valve 8, control valve 9, refrigerant-air heat exchanger 10, control valve 11, compound expansion valve 12, cold-producing medium-water-to-water heat exchanger 13 and connecting line.Refrigerant-air heat exchanger 10 adopts fin-tube heat exchanger, for carrying out heat exchange with outdoor air, cold-producing medium-water-to-water heat exchanger 10 is for carrying out heat exchange with the recirculated water in native pipe laying or solar thermal collector, and cold-producing medium-water-to-water heat exchanger 7 is for carrying out heat exchange with user's recirculated water.Four-way change-over valve 6 has four import and export, be respectively interface I, interface II, interface III and interface IV, interface III, interface IV are communicated with the exhaust outlet of air injection enthalpy-increasing compressor 5, air entry II respectively, interface I is communicated with through refrigerant line one end with the refrigerant side part of cold-producing medium-water-to-water heat exchanger 13, and interface II is communicated with through refrigerant line one end with the refrigerant side part of cold-producing medium-water-to-water heat exchanger 7.The other end of the refrigerant side part of cold-producing medium-water-to-water heat exchanger 7 is communicated with one end of one-stage expansion valve 8, the other end of one-stage expansion valve 8 is communicated with two refrigerant flow paths in parallel, one of them refrigerant flow path is communicated with the air entry I of air injection enthalpy-increasing compressor after the refrigerant side part of compound expansion valve 12, refrigerant-air heat exchanger 10, and another refrigerant flow path is communicated with the interface I of four-way change-over valve 6 through the refrigerant side part of cold-producing medium-water-to-water heat exchanger 13; The two ends of the water side part of cold-producing medium-water-to-water heat exchanger 7 are communicated with user's circulating water line; The two ends of the water side part of cold-producing medium-water-to-water heat exchanger 13 are communicated with the water circulation pipe in native pipe laying or solar thermal collector.
Adjustment four-way change-over valve 6 can make source pump be in the two states that heats and freeze.
Referring to Fig. 1, in a heating mode, the interface II of four-way change-over valve 6 is communicated with interface III, the interface I of four-way change-over valve 6 is communicated with interface IV, air injection enthalpy-increasing compressor 5 has two air entries and an exhaust outlet, the refrigerant gas that refrigerant-air heat exchanger 10 exports enters the air entry I of air injection enthalpy-increasing compressor, another air entry II absorbs the refrigerant gas from cold-producing medium-water-to-water heat exchanger 13, and two-way refrigerant gas mixes and discharged by the exhaust outlet of compressor after further compression in air injection enthalpy-increasing compressor 5.Air injection enthalpy-increasing compressor 5 exports refrigerant gas and enters after four-way change-over valve after cold-producing medium-water-to-water heat exchanger 7 and user's recirculated water carry out heat exchange and enter one-stage expansion valve 8, be divided into two-way afterwards, one tunnel enters refrigerant-air heat exchanger 10 after compound expansion valve 12 expands further, another road enters cold-producing medium-water source heat exchanger 13, now, control valve 9,11, be all in opening.
Referring to Fig. 2, in cooling mode, the interface II of four-way change-over valve 6 is communicated with interface IV, the interface I of four-way change-over valve 6 is communicated with interface III, air injection enthalpy-increasing compressor 5 exports refrigerant gas and enter cold-producing medium-water-to-water heat exchanger 13 after four-way change-over valve 6, the blower fan of refrigerant-air heat exchanger 10 stops, control valve 9,11 is closed, cold-producing medium-water-to-water heat exchanger 13 export cold-producing medium through one-stage expansion valve 8 expand after enter cold-producing medium-water-to-water heat exchanger 7, and user's recirculated water carry out heat exchange after after four-way change-over valve 6, enter air injection enthalpy-increasing compressor 5.
Referring to Fig. 3, when wind energy conversion system rotates, by belt, wind energy conversion system kinetic energy is passed to the power shaft 3-1 of mechanical energy storing device, power shaft passes through reduction gearing 3-2,3-3 by kinetic energy storage in clockwork spring 3-4, and the energy in clockwork spring exports from output shaft 3-5 as power.
This printed instructions uses the open the utility model of example, comprises optimal mode, and makes any technical staff of this area to put into practice the utility model, comprises the method making and use any device or system and perform any combination.The scope that the utility model can be awarded patent is limited by claims, and can comprise other example expected by those skilled in the art.If this type of other example has there is no different structural details from the word language of claims, or they comprise and the equivalent structural elements of the word language of claims without essential distinction, then this type of other example intention is in the scope of claims.
Claims (8)
1. the direct-drive type wind energy heat pump system with mechanical energy storage, comprise wind energy conversion system, mechanical energy storing device, air injection enthalpy-increasing compressor, four-way change-over valve, cold-producing medium-water-to-water heat exchanger I, refrigerant-air heat exchanger, cold-producing medium-water-to-water heat exchanger II, one-stage expansion valve and compound expansion valve, it is characterized in that
Described mechanical energy storing device is connected with described wind energy conversion system, and described air injection enthalpy-increasing compressor is driven by described mechanical energy storing device,
Described air injection enthalpy-increasing compressor comprises bottom air entry I, middle part air entry II and exhaust outlet,
Described cold-producing medium-water-to-water heat exchanger I, II includes refrigerant side part and water side part,
Described four-way change-over valve comprises four interfaces, be respectively interface I, interface II, interface III and interface IV, wherein, interface I is communicated with through refrigerant line one end with the refrigerant side part of described cold-producing medium-water-to-water heat exchanger II, interface II is communicated with through refrigerant line one end with the refrigerant side part of described cold-producing medium-water-to-water heat exchanger I, and interface III, interface IV are communicated with the exhaust outlet of described air injection enthalpy-increasing compressor, middle part air entry II respectively;
One end of the refrigerant side part of described cold-producing medium-water-to-water heat exchanger I is communicated with the interface II of described four-way change-over valve, the other end is communicated with one end of described one-stage expansion valve, the other end of described one-stage expansion valve is communicated with two refrigerant flow paths in parallel, one of them refrigerant flow path is communicated with the bottom air entry I of described air injection enthalpy-increasing compressor after the refrigerant side part of described compound expansion valve, described refrigerant-air heat exchanger, and another refrigerant flow path is communicated with the interface IV of described four-way change-over valve through the refrigerant side part of described cold-producing medium-water-to-water heat exchanger II.
2. the direct-drive type wind energy heat pump system of band mechanical energy storage according to claim 1, is characterized in that, described wind energy conversion system adopts Horizontal-shaft windmill.
3. the direct-drive type wind energy heat pump system of band mechanical energy storage according to claim 1, is characterized in that, described air injection enthalpy-increasing compressor adopts rotary or vortex.
4. the direct-drive type wind energy heat pump system of band mechanical energy storage according to claim 1, is characterized in that, described mechanical energy storing device adopts spiral power spring storaging energy device.
5. the direct-drive type wind energy heat pump system of band mechanical energy storage according to claim 1, is characterized in that, the two ends of the water side part of described cold-producing medium-water-to-water heat exchanger I are communicated with user's circulating water line.
6. the direct-drive type wind energy heat pump system of band mechanical energy storage according to claim 1, is characterized in that, the two ends of the water side part of described cold-producing medium-water-to-water heat exchanger II are communicated with heat source water circulation line.
7. the direct-drive type wind energy heat pump system of band mechanical energy storage according to claim 1, is characterized in that, described cold-producing medium-water-to-water heat exchanger II is using thermal source or solar energy as thermal source.
8. the direct-drive type wind energy heat pump system of band mechanical energy storage according to claim 1, is characterized in that, the two ends of the refrigerant side part of described refrigerant-air heat exchanger are provided with control valve.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109028627A (en) * | 2018-07-04 | 2018-12-18 | 海南华盈泰能源科技有限公司 | A kind of system that cold medium compressor refrigeration and heating is driven based on wind-force |
| CN111380240A (en) * | 2018-12-28 | 2020-07-07 | 青岛海尔空调电子有限公司 | Air conditioning system with two-stage compression |
| CN111577547A (en) * | 2020-06-17 | 2020-08-25 | 龙源（北京）风电工程设计咨询有限公司 | Wind-driven cogeneration system and method with mechanical energy storage function |
| WO2021094779A1 (en) * | 2019-11-14 | 2021-05-20 | Global Partnerships Ltd | Improvements in or relating to heating, ventilation and air conditioning systems |
| CN114608218A (en) * | 2022-03-23 | 2022-06-10 | 无锡中天新能源科技发展有限公司 | Double-heat-source coupling type heat pump system |
-
2015
- 2015-07-21 CN CN201520531652.8U patent/CN204880849U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109028627A (en) * | 2018-07-04 | 2018-12-18 | 海南华盈泰能源科技有限公司 | A kind of system that cold medium compressor refrigeration and heating is driven based on wind-force |
| CN111380240A (en) * | 2018-12-28 | 2020-07-07 | 青岛海尔空调电子有限公司 | Air conditioning system with two-stage compression |
| WO2021094779A1 (en) * | 2019-11-14 | 2021-05-20 | Global Partnerships Ltd | Improvements in or relating to heating, ventilation and air conditioning systems |
| CN111577547A (en) * | 2020-06-17 | 2020-08-25 | 龙源（北京）风电工程设计咨询有限公司 | Wind-driven cogeneration system and method with mechanical energy storage function |
| CN114608218A (en) * | 2022-03-23 | 2022-06-10 | 无锡中天新能源科技发展有限公司 | Double-heat-source coupling type heat pump system |
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