CN105674621A - Domestic energy comprehensive utilization system with carbon dioxide as refrigerant - Google Patents
Domestic energy comprehensive utilization system with carbon dioxide as refrigerant Download PDFInfo
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- CN105674621A CN105674621A CN201610204340.5A CN201610204340A CN105674621A CN 105674621 A CN105674621 A CN 105674621A CN 201610204340 A CN201610204340 A CN 201610204340A CN 105674621 A CN105674621 A CN 105674621A
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- heat exchanger
- carbon dioxide
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- water
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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
- 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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
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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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention discloses a domestic energy comprehensive utilization system with carbon dioxide as a refrigerant. In a high-pressure level, an intermediate heat exchanger, a transcritical carbon dioxide compressor, a high-temperature water-cooling heat exchanger, an intermediate-temperature water-cooling heat exchanger and a transcritical carbon dioxide expansion valve are sequentially and circularly connected, and the intermediate-temperature water-cooling heat exchanger is further connected with a high-pressure air-cooling heat exchanger through a pipeline in parallel. In a low-pressure level, a subcritical carbon dioxide compressor, a low-temperature water-cooling heat exchanger, an ultra-low-temperature air-cooling coil heat exchanger and a subcritical carbon dioxide expansion valve are sequentially and circularly connected, a pipeline between the subcritical carbon dioxide compressor and the subcritical carbon dioxide expansion valve communicates with the intermediate heat exchanger of the high-pressure level, and the low-temperature water-cooling heat exchanger is connected with a low-pressure air-cooling heat exchanger in parallel. According to the domestic energy comprehensive utilization system, domestic energy is integrated in one system, and the comfortable and convenient using environment is provided; meanwhile, scattered energy consumption systems are integrated, more energy is saved, and the domestic energy comprehensive utilization system can be used in the region with the low environment temperature; and efficiency is higher, and compared with a fluorine-containing working medium, using of a carbon dioxide working medium is more environment-friendly.
Description
Technical field
The present invention relates to a kind of residential energy sources utilization system. Particularly relate to a kind of residential energy sources utilization system utilizing carbon dioxide as cold-producing medium based on CO 2 cross-critical heat pump techniques and carbon dioxide sub critical heat pump techniques.
Background technology
CO 2 cross-critical heat pump techniques, main by Trans-critical cycle compressor, expansion valve, air cooler, vaporizer forms, in Trans-critical cycle system, low-pressure section, the pressure of inspiration(Pi) of compressor is lower than critical pressure, and evaporating temperature is also below critical temperature, the endothermic process of circulation still carries out under undercritical conditions, and heat transfer process mainly relies on latent heat to complete. But the pressure at expulsion of compressor is higher than critical pressure, and at supercritical range, it does not have phase transformation, pressure and temperature is each independent parameter, overcomes the restriction that subcritical cycle is affected by environment. So, CO2 Trans-critical cycle kind of refrigeration cycle has an advantage of continuously adjustable cold within the specific limits, affected by environment not quite. This technology is mainly used in indoor heating refrigerating field.
Carbon dioxide sub critical heat pump techniques, the flow process of carbon dioxide sub critical kind of refrigeration cycle is just the same with the circulation of common steam compression type refrigeration, and its cyclic process is all carried out below in critical point. Due to, the freezing fields such as carbon dioxide critical temperature is 31.3 DEG C, relatively low, is now mainly used in refrigerator-freezer meter, fridge.
Summary of the invention
The technical problem to be solved is to provide a kind of Energy and comfort, the energy-efficient residential energy sources utilization system utilizing carbon dioxide as cold-producing medium.
The technical solution adopted in the present invention is: a kind of residential energy sources utilization system utilizing carbon dioxide as cold-producing medium, include the hiigh pressure stage and low-pressure stage that mutually carry out heat exchange, described hiigh pressure stage includes has the pipeline of cold-producing medium to circulate the Intermediate Heat Exchanger of connection successively by stream, critical-cross carbon dioxide compressor, high-temperature water cooling heat exchanger, middle warm water cold heat exchanger and critical-cross carbon dioxide expansion valve, described middle warm water cold heat exchanger is connected in parallel to high-pressure blast cold heat exchanger also by pipeline, wherein, refrigerant inflow port and the flow export of described middle warm water cold heat exchanger are each provided with a high-pressure ball valve according to Season select refrigerant flow direction respectively, the refrigerant inflow port of described high-pressure blast cold heat exchanger and flow export are also each provided with a high-pressure ball valve according to Season select refrigerant flow direction respectively, described low-pressure stage includes has the pipeline of cold-producing medium to circulate the subcritical carbon dioxide compressor of connection successively by stream, water at low temperature cold heat exchanger, ultralow temperature ventilated disc heat exchange of heat pipe and subcritical carbon dioxide expansion valve, the Intermediate Heat Exchanger of the pipeline connection hiigh pressure stage between described subcritical carbon dioxide compressor and subcritical carbon dioxide expansion valve, and carry out heat exchange with the cold-producing medium flowing through Intermediate Heat Exchanger from hiigh pressure stage, described water at low temperature cold heat exchanger is connected in parallel to low-pressure air cold heat exchanger also by pipeline, wherein, the refrigerant inflow port of described water at low temperature cold heat exchanger and flow export are each provided with a low pressure ball valve according to Season select refrigerant flow direction respectively, the refrigerant inflow port of described low-pressure air cold heat exchanger and flow export are also each provided with a low pressure ball valve according to Season select refrigerant flow direction respectively.
Described cold-producing medium is carbon dioxide.
The water inlet of the water pipe for carrying out heat exchange with described cold-producing medium in described high-temperature water cooling heat exchanger and outlet are connected respectively outlet and the water inlet of Indoor Thermal water tank.
The outlet being connected respectively in room conditioning fan coil for the water inlet of water pipe and outlet carrying out heat exchange with described cold-producing medium in described middle warm water cold heat exchanger and water inlet.
The outlet being connected respectively in room conditioning fan coil for the water inlet of water pipe and outlet carrying out heat exchange with described cold-producing medium in described water at low temperature cold heat exchanger and water inlet.
Described ultralow temperature ventilated disc heat exchange of heat pipe is arranged on refrigerator inside as the low-temperature receiver of refrigerator.
A kind of residential energy sources utilization system utilizing carbon dioxide as cold-producing medium of the present invention, residential energy sources is incorporated in a system, provide not only and comfortable use environment easily, and scattered dissipative system is integrated, more energy-conservation, use carbon dioxide as cooling and warming working medium simultaneously, be possible not only to use in ambient temperature lower ground territory, and in hgher efficiency, use carbon dioxide working medium more environmentally-friendly compared to fluorine-containing working medium. Have the advantages that
1, by multi-stage compression (making superposition type compression into), reduce compressor pressure ratio, reduce compressor and do manual work, improve system effectiveness, save the energy.
2, operation that can be more stable under environment colder in the winter time, during winter, the evaporating temperature of low side evaporator is minimum is down to-35 DEG C, can meet most area heat supply in winter demand.
3, integrating control, it is simple to regulate, Energy and comfort, more energy-conservation.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
In figure
1: high-pressure blast cold heat exchanger 2: high-temperature water cooling heat exchanger
3: middle warm water cold heat exchanger 4: Intermediate Heat Exchanger
5: critical-cross carbon dioxide compressor 6: critical-cross carbon dioxide expansion valve
7: subcritical carbon dioxide compressor 8: ultralow temperature ventilated disc heat exchange of heat pipe
9: water at low temperature cold heat exchanger 10: low-pressure air cold heat exchanger
11: subcritical carbon dioxide expansion valve 12,13: high-pressure ball valve
14,15: high-pressure ball valve 16,17: low pressure ball valve
18,19: low pressure ball valve
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, a kind of residential energy sources utilization system utilizing carbon dioxide as cold-producing medium of the present invention is described in detail.
A kind of residential energy sources utilization system utilizing carbon dioxide as cold-producing medium of the present invention, include the hiigh pressure stage and low-pressure stage that mutually carry out heat exchange, utilize CO 2 cross-critical and subcritical heat pump can provide the heat energy of different temperatures, be applied in home energy source system and realize the cold and hot of family warm up cold efficiently integrated four alliances. As shown in Figure 1, described hiigh pressure stage includes has the pipeline of cold-producing medium to circulate the Intermediate Heat Exchanger 4 of connection, critical-cross carbon dioxide compressor 5, high-temperature water cooling heat exchanger 2, middle warm water cold heat exchanger 3 and critical-cross carbon dioxide expansion valve 6 successively by stream, described middle warm water cold heat exchanger 3 is connected in parallel to high-pressure blast cold heat exchanger 1 also by pipeline, and described cold-producing medium is carbon dioxide. Wherein, the refrigerant inflow port of described middle warm water cold heat exchanger 3 and flow export are each provided with a high-pressure ball valve 12,13 according to Season select refrigerant flow direction respectively, and the refrigerant inflow port of described high-pressure blast cold heat exchanger 1 and flow export are also each provided with a high-pressure ball valve 14,15 according to Season select refrigerant flow direction respectively;Described low-pressure stage includes has the pipeline of cold-producing medium to circulate the subcritical carbon dioxide compressor 7 of connection, water at low temperature cold heat exchanger 9, ultralow temperature ventilated disc heat exchange of heat pipe 8 and subcritical carbon dioxide expansion valve 11 successively by stream, the Intermediate Heat Exchanger 4 of the pipeline connection hiigh pressure stage between described subcritical carbon dioxide compressor 7 and subcritical carbon dioxide expansion valve 11, and carry out heat exchange with the cold-producing medium flowing through Intermediate Heat Exchanger 4 from hiigh pressure stage, described water at low temperature cold heat exchanger 9 is connected in parallel to low-pressure air cold heat exchanger 10 also by pipeline, and described cold-producing medium is carbon dioxide. Wherein, the refrigerant inflow port of described water at low temperature cold heat exchanger 9 and flow export are each provided with a low pressure ball valve 16,17 according to Season select refrigerant flow direction respectively, the refrigerant inflow port of described low-pressure air cold heat exchanger 10 and flow export are also each provided with a low pressure ball valve 18,19 according to Season select refrigerant flow direction respectively, and described ultralow temperature ventilated disc heat exchange of heat pipe 8 can be arranged on refrigerator inside as the low-temperature receiver of refrigerator.
The water inlet of the water pipe for carrying out heat exchange with described cold-producing medium in described high-temperature water cooling heat exchanger 2 and outlet are connected respectively outlet and the water inlet of Indoor Thermal water tank.
The outlet being connected respectively in room conditioning fan coil for the water inlet of water pipe and outlet carrying out heat exchange with described cold-producing medium in described middle warm water cold heat exchanger 3 and water inlet.
The outlet being connected respectively in room conditioning fan coil for the water inlet of water pipe and outlet carrying out heat exchange with described cold-producing medium in described water at low temperature cold heat exchanger 9 and water inlet.
A kind of residential energy sources utilization system utilizing carbon dioxide as cold-producing medium of the present invention, during installation, first the size of all parts is determined according to the heat exchange scale of system, then by high-pressure blast cold heat exchanger 1, high-temperature water cooling heat exchanger 2, middle warm water cold heat exchanger 3, Intermediate Heat Exchanger 4, critical-cross carbon dioxide compressor 5, critical-cross carbon dioxide expansion valve 6, subcritical carbon dioxide compressor 7, ultralow temperature ventilated disc heat exchange of heat pipe 8, water at low temperature cold heat exchanger 9, low-pressure air cold heat exchanger 10, subcritical carbon dioxide expansion valve 11, relative position shown in Fig. 1 welds respectively, finally by water lines, the water side of middle warm water cold heat exchanger 3 with water at low temperature cold heat exchanger 9 is connected to room conditioning fan coil again, high-temperature water cooling heat exchanger 2 is connected to boiler, outcase of refrigerator is installed additional outside ultralow temperature ventilated disc heat exchange of heat pipe 8, thus constitute complete a kind of residential energy sources utilization system utilizing carbon dioxide as cold-producing medium.
The operation principle of a kind of residential energy sources utilization system utilizing carbon dioxide as cold-producing medium of the present invention is: during winter, the high-pressure ball valve 12,13 at middle warm water cold heat exchanger 3 two ends is opened, the high-pressure ball valve 14,15 of high-pressure blast cold heat exchanger 1 both sides is closed, the low pressure ball valve 16,17 of water at low temperature cold heat exchanger both sides is closed, and the low pressure ball valve 18,19 of low-pressure air cold heat exchanger both sides is opened. middle warm water cold heat exchanger 3 is connected with indoor fan coil pipe by water route reversal valve, hiigh pressure stage carbon dioxide is compressed to 12MPa by critical-cross carbon dioxide compressor 5, after high-temperature water cooling heat exchanger 2 heat exchange, high-temperature water cooling heat exchanger 2 leaving water temperature is 60 DEG C, flow into Indoor Thermal water tank and domestic bathing water is provided, flow through the high-pressure carbon dioxide steam of high-temperature water cooling heat exchanger 2 by mid temperature heat exchanger 3 and fan coil, heating indoor heating water, after the heat absorption of indoor heating water, temperature reaches 45 DEG C, it is indoor heating by circulating pump, the carbon dioxide flowing through mid temperature heat exchanger 3 reduces pressure through critical-cross carbon dioxide expansion valve 6, it is depressurized to 7MPa, enter Intermediate Heat Exchanger 4 and low-pressure side carbon dioxide heat exchange, form the superheated steam of certain mass dryness fraction, return on high-tension side critical-cross carbon dioxide compressor 5, complete high-pressure side circulation.The carbon dioxide of low-pressure side high temperature condenses in Intermediate Heat Exchanger 4, enter subcritical expansion valve 11 expansion decompression to 2.4MPa, laggard excess of imports low-temperature air-cooling coil heat exchanger 8, ventilated disc heat exchange of heat pipe 8 is arranged on refrigerator inside, low-temperature receiver as refrigerator, now evaporating temperature is-13 DEG C, evaporating temperature can be adjusted by expansion valve, after the air-cooled coil pipe evaporation of ultralow temperature, low pressure CO 2 enters low-pressure air cold heat exchanger 10, low-pressure air cold heat exchanger 10 is placed in outdoor, important (mainly) is for balancing and regulate the heat different between refrigeration that heats, pass through and outdoor air heat exchange, form the superheated steam of certain mass dryness fraction, enter subcritical carbon dioxide compressor 7 and complete low-pressure stage circulation.
During summer, the high-pressure ball valve 12,13 at middle warm water cold heat exchanger 3 two ends is closed, the high-pressure ball valve 14,15 of high-pressure blast cold heat exchanger 1 both sides is opened, and the low pressure ball valve 16,17 of water at low temperature cold heat exchanger both sides is opened, and the low pressure ball valve 18,19 of low-pressure air cold heat exchanger both sides is closed. hiigh pressure stage carbon dioxide is compressed to 9MPa by critical-cross carbon dioxide compressor 5, after high-temperature water cooling heat exchanger 2 heat exchange, high-temperature water cooling heat exchanger 2 leaving water temperature is 45 DEG C, domestic bathing water is provided, flow through the carbon dioxide-vapor of high pressure of high-temperature water cooling heat exchanger 2 by high-pressure blast cold heat exchanger 1, with outdoor air heat exchange, after reducing temperature, make temperature lower than 40 DEG C, reduce pressure through critical-cross carbon dioxide expansion valve 6, it is depressurized to 6.5MPa, enter Intermediate Heat Exchanger 4 and low-pressure side carbon dioxide heat exchange, form the superheated steam of certain mass dryness fraction, return to high-pressure side critical-cross carbon dioxide compressor 5, complete high-pressure side circulation. the carbon dioxide of low-pressure side high temperature condenses in Intermediate Heat Exchanger 4, enter subcritical expansion valve 11 expansion decompression to 2.4MPa, laggard excess of imports low-temperature air-cooling coil heat exchanger, ventilated disc heat exchange of heat pipe is arranged on refrigerator inside, low-temperature receiver as refrigerator, now evaporating temperature is-13 DEG C, evaporating temperature can be adjusted by expansion valve, after the air-cooled coil pipe evaporation of ultralow temperature, low pressure CO 2 enters complete evaporation in water at low temperature cold heat exchanger 9, form superheated steam, absorb the heat of fan coil water in room conditioning, water at low temperature cold heat exchanger leaving water temperature is made to be reduced to 7 DEG C, it is indoor refrigeration through circulating pump. the overheated carbon dioxide-vapor entrance subcritical carbon dioxide compressor 7 flowing through water at low temperature cold heat exchanger 9 completes low-pressure stage circulation.
Claims (6)
1. the residential energy sources utilization system utilizing carbon dioxide as cold-producing medium, include the hiigh pressure stage and low-pressure stage that mutually carry out heat exchange, it is characterized in that, described hiigh pressure stage includes has the pipeline of cold-producing medium to circulate the Intermediate Heat Exchanger (4) of connection successively by stream, critical-cross carbon dioxide compressor (5), high-temperature water cooling heat exchanger (2), middle warm water cold heat exchanger (3) and critical-cross carbon dioxide expansion valve (6), described middle warm water cold heat exchanger (3) is connected in parallel to high-pressure blast cold heat exchanger (1) also by pipeline, wherein, refrigerant inflow port and the flow export of described middle warm water cold heat exchanger (3) are each provided with a high-pressure ball valve (12 according to Season select refrigerant flow direction respectively, 13), the refrigerant inflow port of described high-pressure blast cold heat exchanger (1) and flow export are also each provided with a high-pressure ball valve (14 according to Season select refrigerant flow direction respectively, 15), described low-pressure stage includes has the pipeline of cold-producing medium to circulate the subcritical carbon dioxide compressor (7) of connection successively by stream, water at low temperature cold heat exchanger (9), ultralow temperature ventilated disc heat exchange of heat pipe (8) and subcritical carbon dioxide expansion valve (11), the Intermediate Heat Exchanger (4) of the pipeline connection hiigh pressure stage between described subcritical carbon dioxide compressor (7) and subcritical carbon dioxide expansion valve (11), and carry out heat exchange with the cold-producing medium flowing through Intermediate Heat Exchanger (4) from hiigh pressure stage, described water at low temperature cold heat exchanger (9) is connected in parallel to low-pressure air cold heat exchanger (10) also by pipeline, wherein, the refrigerant inflow port of described water at low temperature cold heat exchanger (9) and flow export are each provided with a low pressure ball valve (16 according to Season select refrigerant flow direction respectively, 17), the refrigerant inflow port of described low-pressure air cold heat exchanger (10) and flow export are also each provided with a low pressure ball valve (18 according to Season select refrigerant flow direction respectively, 19).
2. a kind of residential energy sources utilization system utilizing carbon dioxide as cold-producing medium according to claim 1, it is characterised in that described cold-producing medium is carbon dioxide.
3. a kind of residential energy sources utilization system utilizing carbon dioxide as cold-producing medium according to claim 1, it is characterized in that, the water inlet of the water pipe for carrying out heat exchange with described cold-producing medium in described high-temperature water cooling heat exchanger (2) and outlet are connected respectively outlet and the water inlet of Indoor Thermal water tank.
4. a kind of residential energy sources utilization system utilizing carbon dioxide as cold-producing medium according to claim 1, it is characterized in that, the outlet being connected respectively in room conditioning fan coil for the water inlet of water pipe and outlet carrying out heat exchange with described cold-producing medium in described middle warm water cold heat exchanger (3) and water inlet.
5. a kind of residential energy sources utilization system utilizing carbon dioxide as cold-producing medium according to claim 1, it is characterized in that, the outlet being connected respectively in room conditioning fan coil for the water inlet of water pipe and outlet carrying out heat exchange with described cold-producing medium in described water at low temperature cold heat exchanger (9) and water inlet.
6. a kind of residential energy sources utilization system utilizing carbon dioxide as cold-producing medium according to claim 1, it is characterised in that described ultralow temperature ventilated disc heat exchange of heat pipe (8) is arranged on refrigerator inside as the low-temperature receiver of refrigerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610204340.5A CN105674621A (en) | 2016-03-31 | 2016-03-31 | Domestic energy comprehensive utilization system with carbon dioxide as refrigerant |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610204340.5A CN105674621A (en) | 2016-03-31 | 2016-03-31 | Domestic energy comprehensive utilization system with carbon dioxide as refrigerant |
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| CN105674621A true CN105674621A (en) | 2016-06-15 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106352547A (en) * | 2016-10-25 | 2017-01-25 | 李家海 | Spiral wound heat exchanger special for double-heat pump water heater |
| CN106855326A (en) * | 2017-02-23 | 2017-06-16 | 黄安东 | The integrated machine of multisystem cool-heat-exchanger efficient water-heating and its method of work |
| CN106996599A (en) * | 2017-05-15 | 2017-08-01 | 中国铁路设计集团有限公司 | Carbon dioxide overlapping multi-gang air-conditioner device |
| CN107933594A (en) * | 2017-12-18 | 2018-04-20 | 中车大连机车研究所有限公司 | One kind is based on CO2The trans critical cycle railway vehicle air conditioner system of refrigerant |
| CN109520167A (en) * | 2019-01-02 | 2019-03-26 | 天津城建大学 | A kind of multistage folding type cooling system for large-size air conditioning system |
| CN111351290A (en) * | 2020-04-28 | 2020-06-30 | 河南新飞制冷器具有限公司 | household ultra-low temperature refrigerator freezer |
| CN115854578A (en) * | 2022-05-24 | 2023-03-28 | 浙江高晟光热发电技术研究院有限公司 | A cooler and supercritical carbon dioxide Brayton cycle power generation system |
| CN119196971A (en) * | 2024-11-26 | 2024-12-27 | 北京大学南昌创新研究院 | An ice storage pool and a transcritical and subcritical cold storage refrigeration system thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106352547A (en) * | 2016-10-25 | 2017-01-25 | 李家海 | Spiral wound heat exchanger special for double-heat pump water heater |
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| CN115854578A (en) * | 2022-05-24 | 2023-03-28 | 浙江高晟光热发电技术研究院有限公司 | A cooler and supercritical carbon dioxide Brayton cycle power generation system |
| CN115854578B (en) * | 2022-05-24 | 2025-05-13 | 浙江高晟光热发电技术研究院有限公司 | A cooler and supercritical carbon dioxide Brayton cycle power generation system |
| CN119196971A (en) * | 2024-11-26 | 2024-12-27 | 北京大学南昌创新研究院 | An ice storage pool and a transcritical and subcritical cold storage refrigeration system thereof |
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Application publication date: 20160615 |