CN108180666A - CO is subcooled in a kind of non-azeotropic working medium mechanical-assisted2Cooling and warming integral system - Google Patents
CO is subcooled in a kind of non-azeotropic working medium mechanical-assisted2Cooling and warming integral system Download PDFInfo
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- CN108180666A CN108180666A CN201810093088.4A CN201810093088A CN108180666A CN 108180666 A CN108180666 A CN 108180666A CN 201810093088 A CN201810093088 A CN 201810093088A CN 108180666 A CN108180666 A CN 108180666A
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- cooling
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- evaporator
- azeotropic
- compressor
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/07—Details of compressors or related parts
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention discloses a kind of non-azeotropic working medium mechanical super cooling CO2Cooling and warming integral system.Non-azeotrope mixed vapour is compressed cycle and CO by the present invention2Trans critical cycle is combined, and non-azeotropic working medium is there are temperature glide in phase transition process, and the condenser that return water flows through non-azeotropic working medium auxiliary circulation all the way is heated, and another way flows through CO2The gas cooler of cycle is heated, and the inlet and outlet temperature difference of two-way hot water is smaller, with auxiliary circulation non-azeotropic mixed working medium condensation process and CO2Fluid temperature reduction process forms preferable Temperature Matching.Non-azeotropic refrigerant evaporation process and supercritical CO2Fluid temperature reduction process journey forms good Temperature Matching, and the heat exchange irreversible loss in condenser, gas cooler and cooling evaporator can be greatly reduced by combined heating system, and compressor input work can be reduced by recycling expansion work by expanding machine, ensure CO2Cooling and warming integral system Effec-tive Function.
Description
Technical field
The present invention relates to the CO of non-azeotropic working medium mechanical-assisted supercooling2Cooling and warming integral system.
Background technology
Zhangjiakou is taken by the hand with Beijing and successfully bids to host Winter Olympic Games in 2022, and China's winter sports welcomes unprecedented development
Opportunity.In order to realize " 300,000,000 people participate in winter sports " target, winter sports can be gradually universal to masses.It is transported with ice and snow is participated in
Dynamic people is more and more, and winter sports venues and facilities also can rapidly increase.Large-scale gymnasium can be equipped with simultaneously artificial ice rink,
Swimming pool and and the summer in winter have the demand for warm cooling.Ensure the normal operation of large-scale stadium, need to pass through system
Cool equipment provides cold, and provide heat for swimming pool and heating equipment for ice rink.In order to meet refrigeration and system simultaneously
The heat that ice rink ice making equipment condenser side discharges can be recycled, be carried for swimming pool and heating equipment by the demand of heat
Heating load to improve refrigeration system comprehensive energy efficiency, achieves energy-saving and emission reduction purposes.
To ensure that water temperature temperature is 26~28 DEG C, water is warming to 50 DEG C or so and reinjects in swimming pool, adds for cycle
Heat.And the heating system of the stadiums for northern area, end generally use radiator, it is desirable that general radiator water inlet
60~85 DEG C of temperature, 50~75 DEG C of return water temperature, supply backwater temperature difference is smaller, is also circulating-heating.And heating system be all according to
By fire coal, the pollutant generated that burns is more, a big inducement big to the harm of environment and leading to north of china in winter haze.
For administer north of china in winter haze problem, government it is also proposed that using coal change the measures such as electricity solve north of china in winter heating, i.e., by electricity consumption,
The clean energy resourcies such as combustion gas replace traditional coal heating, need to be transformed the heating system of stadiums.Such as use heat pump
After systematic substitution coal-burning boiler, if heat supply end (radiator) is not transformed, supply and return water temperature should remain unchanged.
However the refrigerant that uses of current market sales of heat pump product for meeting this working condition be mainly HFC or
The artificial synthesized refrigerant of HCFC classes, these refrigerant GWP values are higher, have stronger greenhouse effects.In October, 2016, the whole world reached
Into《Montreal Protocol Kigali's amendment》It is proposed wants emphasis to cut down HFC class compounds.Therefore, natural refrigerant CO2By
Gradually cause the extensive concern of people.Using CO2System both can be used for freezing can also be used to heat.However, CO2Heat pump system
System is suitable for the big system of backwater temperature difference (such as heat pump water heater system), such as uses CO2Heat pump is for heating, energy
It imitates relatively low.And CO2Restriction loss is larger, and leading to it, efficiency is relatively low under cooling condition.
Such as use CO2System carries out cooling for ice rink, and the thermal discharge of gas cooler is recycled to swim
Swimming pool and heating, it is necessary to overcome problems with：1) reduce CO2Throttle irreversible loss, increases refrigerating capacity；2) confession is being reduced
Under the premise of backwater temperature difference, ensure CO2The higher efficiency of system；3) ensure system safety and environmental protection.
Invention content
Present invention aims at provide a kind of non-azeotropic working medium mechanical-assisted supercooling CO2Trans-critical cycle cooling and warming integration system
System, wherein mechanical super cooling heat pump system are traditional vapor-compression refrigerant cycle, and refrigerant is R32/R152a or R32/
The rational non-azeotropic refrigerant of R11234ze (E) temperature glide.
The technical solution used in the present invention is：CO is subcooled in a kind of non-azeotropic working medium mechanical-assisted2Trans-critical cycle cooling and warming
Heat pump system and expanding machine auxiliary CO is subcooled including non-azeotropic working medium mechanical-assisted in integral system2Cooling and warming integration system
System；
Non-azeotropic working medium mechanical-assisted supercooling heat pump system includes auxiliary circulation compressor, condenser, auxiliary circulation throttling
Valve and cooling evaporator；The refrigerant of cooling evaporator outflow is through auxiliary circulation compressor by refrigerant compression into high temperature and pressure gas
Body exchanges heat into condenser and return water, and the refrigerant after heat exchange enters cold after auxiliary circulation throttle valve expansion throttling
But evaporator, to CO2The CO of gas cooler outlet2Fluid is cooled down；
Expanding machine assists CO2Cooling and warming integral system include compressor, gas cooler, expanding machine, evaporator and
Shaft coupling forms；CO2Exchange heat through evaporator outflow into gas cooler with return water after compressor, after by expanding
The heat that evaporator absorbs coolant is flowed into after machine expansion throttling, coolant is flowed out from evaporator flows into evaporator again through coil pipe,
Expanding machine is coaxially coupled by shaft coupling with compressor；
The return water of radiator flows through triple valve, is divided into two-way, flows through the condenser that mechanical-assisted crosses cooling system all the way, another
Road return water flow to CO2The gas cooler of cycle, final two-way hot water flow to blending tank, mixed delivery to heating
Piece.
Non-azeotropic refrigerant is compressed into height by auxiliary circulation compressor in non-azeotropic working medium mechanical-assisted supercooling heat pump system
Warm high pressure gas, exchanges heat into condenser and return water.Refrigerant becomes after auxiliary circulation throttle valve expansion throttling later
For the gas-liquid two-phase fluid of low-temp low-pressure, by cooling evaporator to CO2The CO of gas cooler outlet2Fluid carries out cooling and reaches
To supercooling effect.
Expanding machine assists CO2CO in cooling and warming integral system2The working medium filled in heat pump system is CO2, compressor will
Refrigerant compression is exchanged heat into gas cooler and return water into high temperature and high pressure gas, after become after expander
Then the gas-liquid two-phase fluid of low-temp low-pressure flows into evaporator and absorbs heat, sucking compressor enters after becoming low temperature low pressure gas
Mouthful, evaporator realizes refrigeration, completes cycle to external environment absorbing and cooling temperature.Expanding machine is coaxially connected by shaft coupling with compressor
It connects, the expansion work of recycling provides kinetic energy for compressor, reduces compressor input work.
The invention has the advantages and positive effects that：
(1)CO2The refrigerant of cooling and warming integral system is natural refrigerant CO2。CO2GWP for 1, ODP 0, safety
Nontoxic non-combustible, cheap easily acquisition.The refrigerant that auxiliary circulation uses is slided for R32/R152a or R32/R11234ze (E) temperature
Move the relatively low non-azeotropic refrigerants of rational GWP.CO2The refrigerant of cycle and auxiliary circulation is environmental-friendly working medium.
(2) there are temperature glides during evaporative condenser for the agent of mechanical super cooling circularly cooling, are recycled according to Lorenz general
It reads, non-azeotropic mixed working medium evaporation process and overcritical supercooling CO2Fluid forms preferable Temperature Matching.Non-azeotropic mixed working medium
Condensation process forms good Temperature Matching with hot water temperature-rise period.CO2 gas cooler exit temperatures are higher, with adding for hot water
The Temperature Matching of thermal process is preferable.It realizes under the premise of hot water enters the smaller operating mode of water backwater temperature difference, rationally reduces and exchanged heat
Irreversible loss in journey promotes CO2The whole efficiency of cooling and warming integral system.
(3) for return water, it is divided into two-way, the condenser for flowing through auxiliary circulation all the way is heated, and another way flows through CO2It follows
The gas cooler of ring is heated.Two-way hot water after heating enters blending tank and is mixed, and supplies radiator heating later
Or natatorium heating system uses, the inlet and outlet temperature difference of two-way return water is smaller, under the premise of radiator supplying thermal condition is ensured, ensures system
System efficiency replaces coal-burning boiler to be heated by heat pump.
(4) by mechanical super cooling system to CO2The CO of system gas cooler outlet2It is subcooled, is lowered into throttle valve
Preceding CO2Temperature reduces restriction loss, and further reduces CO2Run high pressure；By expanding machine to CO2Expansion in expansion process
Work(is recycled, and expanding machine is connected with compressor by shaft coupling, and recycling work(reduces compressor due to driving compressor work
Input work ensures CO2Heat pump system Effec-tive Function.
(5) CO is made full use of2The cold and hot amount that cooling and warming integral system is produced, evaporator to coolant absorbing and cooling temperature,
Freezed by coolant to ice rink ice face.
Description of the drawings
Fig. 1 is the tephigram of the present invention；
Fig. 2 is the system schematic of the present invention.
Specific embodiment
In order to further understand the content, features and effects of the present invention, detailed description are as follows for attached drawing：
Heat pump system and expanding machine auxiliary CO is subcooled in non-azeotropic mixed working medium mechanical-assisted2The tephigram of refrigerating and heating systems
As shown in Figure 1, wherein fine dotted line is CO2Trans critical cycle (1-2-3-4-1), fine line for non-azeotropic working medium cycle (1 ' -2 ' -
3 ' -4 ' -1 '), heavy line is the temperature-rise period of water, and thick dashed line is coolant temperature-fall period.
Referring to Fig. 2, a kind of non-azeotropic working medium mechanical-assisted supercooling CO2Trans-critical cycle cooling and warming integral system.For
Return water, is divided into two-way, and the condenser for flowing through auxiliary circulation (refrigerant uses non-azeotropic working medium) all the way is heated, another way stream
Through CO2The gas cooler of cycle is heated, and the two-way hot water after heating enters blending tank and mixed, and supplies user later
Heating uses, at this time CO2The CO of system gas cooler outlet2Temperature is higher to pass through auxiliary system (since return water temperature is higher)
To CO2It is subcooled, CO before throttle valve can be lowered into2Temperature can thus play reduction throttling irreversible loss, reduce
CO2Run the effect of high pressure.Under the smaller working condition of supply backwater temperature difference, CO2Heat pump system remains able to Effec-tive Function.It is auxiliary
The non-azeotrope system for helping the refrigerant of recycling relatively low for the R32/R152a or rational GWP of R32/R11234ze (E) temperature glide
Cryogen.In CO2In heat pump system, absorbed heat using refrigerant in evaporator, to coolant refrigeration cool-down.
Its specific embodiment is：
The first step：Return water is exchanged heat by flowing through condenser 2 after triple valve 1 all the way, after gas coming through cooler 9 exchanges heat all the way
It reaches blending tank 10 to be mixed, then heat supply or heat swimming pools is carried out through radiator or heat exchanger 12, so on circulate.
Second step：Auxiliary circulation compressor 5 sucks the refrigerant gas of the low-temp low-pressure in 4 exit of cooling evaporator, will
It is compressed into the gas of high temperature and pressure, and temperature reduces after being exchanged heat with hot water, flows through the throttling drop of auxiliary circulation throttle valve 3 later
Pressure, becomes gas-liquid two-phase state.Enter auxiliary circulation compressor 5 after 4 evaporation endothermic of cooling evaporator as overheated gas again,
Complete auxiliary circulation.
Third walks：Compressor 8 absorbs the low-temp low-pressure CO in 7 exit of evaporator2Gas compresses it into high temperature and pressure
Supercritical fluid exchanges heat through gas cooler 9 and water in pipeline, then is subcooled through cooling evaporator 4, by expanding machine
Become the gas-liquid two-phase state of low-temp low-pressure after 6 expansions, enter back into compressor 8 after the evaporation of evaporator 7, and so on follow
Ring.Expanding machine 6 is connect with compressor 8 by shaft coupling 13, and the expansion work that expanding machine 6 exports is used for that compressor 8 is driven to realize CO2
The compression of fluid.
4th step：CO in evaporator 72Evaporation absorbs the heat of coolant, and coolant flows through coil pipe 11, realizes refrigeration.
Although the preferred embodiment of the present invention is described above in conjunction with attached drawing, the invention is not limited in upper
The specific embodiment stated, above-mentioned specific embodiment is only schematical, be not it is restricted, this field it is common
Technical staff is not departing from present inventive concept and scope of the claimed protection, may be used also under the enlightenment of the present invention
By make it is many in the form of, within these are all belonged to the scope of protection of the present invention.
Claims (2)
1. CO is subcooled in a kind of non-azeotropic working medium mechanical-assisted2Cooling and warming integral system, which is characterized in that including non-azeotrope work
Heat pump system and expanding machine auxiliary CO is subcooled in matter mechanical-assisted2Cooling and warming integral system；Non-azeotropic working medium mechanical-assisted mistake
Cold and hot pumping system includes auxiliary circulation compressor, condenser, auxiliary circulation throttle valve and cooling evaporator；Cooling evaporator flows out
Refrigerant through auxiliary circulation compressor by refrigerant compression into high temperature and high pressure gas, exchange heat into condenser and return water,
Refrigerant after heat exchange enters cooling evaporator after auxiliary circulation throttle valve expansion throttling, to CO2Gas cooler exports
CO2Fluid is cooled down；
Expanding machine assists CO2Cooling and warming integral system includes compressor, gas cooler, expanding machine, evaporator and shaft coupling
Composition；CO2Exchange heat through evaporator outflow into gas cooler with return water after compressor, after by expander
The heat that evaporator absorbs coolant is flowed into after throttling, coolant is flowed out from evaporator flows into evaporator, expanding machine again through coil pipe
Coaxially coupled with compressor by shaft coupling；
The return water of radiator flows through triple valve, is divided into two-way, flows through the condenser that mechanical-assisted crosses cooling system all the way, and another way is returned
Water flow to CO2The gas cooler of cycle, final two-way hot water flow to blending tank, mixed delivery to radiator.
2. CO is subcooled in non-azeotropic working medium mechanical-assisted according to claim 12Cooling and warming integral system, feature exist
In the refrigerant of non-azeotropic working medium mechanical-assisted supercooling heat pump system is R32/R152a or R32/R11234ze.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810093088.4A CN108180666A (en) | 2018-01-31 | 2018-01-31 | CO is subcooled in a kind of non-azeotropic working medium mechanical-assisted2Cooling and warming integral system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810093088.4A CN108180666A (en) | 2018-01-31 | 2018-01-31 | CO is subcooled in a kind of non-azeotropic working medium mechanical-assisted2Cooling and warming integral system |
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| Publication Number | Publication Date |
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| CN108180666A true CN108180666A (en) | 2018-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810093088.4A Pending CN108180666A (en) | 2018-01-31 | 2018-01-31 | CO is subcooled in a kind of non-azeotropic working medium mechanical-assisted2Cooling and warming integral system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113670974A (en) * | 2021-09-18 | 2021-11-19 | 天津大学合肥创新发展研究院 | Supercritical CO2Mixed working medium heat exchange experimental system |
| CN113776215A (en) * | 2021-09-18 | 2021-12-10 | 青岛科技大学 | Circulating system applied to cascade refrigeration or heat pump system and supercooling method |
| CN116592536A (en) * | 2023-06-09 | 2023-08-15 | 森创中汇(北京)热电科技有限公司 | Dual-cycle refrigerating and heating system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105021A (en) * | 2013-01-22 | 2013-05-15 | 秦海涛 | Refrigeration heat pump unit of carbon dioxide (CO2) transcritical cycle and control method thereof |
| CN104949390A (en) * | 2015-06-25 | 2015-09-30 | 西安交通大学 | Transcritical CO2 heat pump system for heating radiator heating |
| CN105042672A (en) * | 2015-09-01 | 2015-11-11 | 中国铁道科学研究院 | Air source CO2 heat pump system suitable for connecting heating radiators |
| CN204923159U (en) * | 2015-09-01 | 2015-12-30 | 北京嘉孚科技有限公司 | Be applicable to heating carbon dioxide air source heat pump system of high return water temperature |
| CN106568194A (en) * | 2016-10-17 | 2017-04-19 | 广东工业大学 | Carbon dioxide trans-critical cycle heat pump type hot water system, and heating method of the same |
| CN107631510A (en) * | 2017-10-19 | 2018-01-26 | 天津商业大学 | CO based on hydraulic recovery2Middle cryogenic freezing refrigerating system |
-
2018
- 2018-01-31 CN CN201810093088.4A patent/CN108180666A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105021A (en) * | 2013-01-22 | 2013-05-15 | 秦海涛 | Refrigeration heat pump unit of carbon dioxide (CO2) transcritical cycle and control method thereof |
| CN104949390A (en) * | 2015-06-25 | 2015-09-30 | 西安交通大学 | Transcritical CO2 heat pump system for heating radiator heating |
| CN105042672A (en) * | 2015-09-01 | 2015-11-11 | 中国铁道科学研究院 | Air source CO2 heat pump system suitable for connecting heating radiators |
| CN204923159U (en) * | 2015-09-01 | 2015-12-30 | 北京嘉孚科技有限公司 | Be applicable to heating carbon dioxide air source heat pump system of high return water temperature |
| CN106568194A (en) * | 2016-10-17 | 2017-04-19 | 广东工业大学 | Carbon dioxide trans-critical cycle heat pump type hot water system, and heating method of the same |
| CN107631510A (en) * | 2017-10-19 | 2018-01-26 | 天津商业大学 | CO based on hydraulic recovery2Middle cryogenic freezing refrigerating system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113670974A (en) * | 2021-09-18 | 2021-11-19 | 天津大学合肥创新发展研究院 | Supercritical CO2Mixed working medium heat exchange experimental system |
| CN113776215A (en) * | 2021-09-18 | 2021-12-10 | 青岛科技大学 | Circulating system applied to cascade refrigeration or heat pump system and supercooling method |
| CN113670974B (en) * | 2021-09-18 | 2023-10-31 | 天津大学合肥创新发展研究院 | Supercritical CO 2 Mixed working medium heat exchange experiment system |
| CN116592536A (en) * | 2023-06-09 | 2023-08-15 | 森创中汇(北京)热电科技有限公司 | Dual-cycle refrigerating and heating system |
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Application publication date: 20180619 |