CN110186221A - CO 2 trans-critical heat pump system - Google Patents
CO 2 trans-critical heat pump system Download PDFInfo
- Publication number
- CN110186221A CN110186221A CN201910569968.9A CN201910569968A CN110186221A CN 110186221 A CN110186221 A CN 110186221A CN 201910569968 A CN201910569968 A CN 201910569968A CN 110186221 A CN110186221 A CN 110186221A
- Authority
- CN
- China
- Prior art keywords
- gas
- heat pump
- gas cooler
- trans
- pump system
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 238000001816 cooling Methods 0.000 claims abstract description 31
- 239000012530 fluid Substances 0.000 claims abstract description 26
- 239000000498 cooling water Substances 0.000 claims description 27
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 20
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 10
- 239000001569 carbon dioxide Substances 0.000 claims description 10
- 230000008676 import Effects 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 108091006146 Channels Proteins 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- 102000010637 Aquaporins Human genes 0.000 description 1
- 108010063290 Aquaporins Proteins 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000021760 high fever Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- 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
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The present invention relates to heat pump air conditioner technical fields, a kind of CO 2 trans-critical heat pump system is provided, including sequentially connected compressor, throttling set and evaporator, it further include gas cooling device, gas cooling device includes concatenated first gas cooler and second gas cooler, the cycle fluid channel of first gas cooler is connect with compressor, and the cycle fluid channel of second gas cooler is connect with throttling set.CO 2 trans-critical heat pump system provided by the invention, pass through the gas cooling device of subsection setup, realize the segmentally heating to water, obtain the hot water of different temperatures, it not only can satisfy different use heat demands, and better cooling effect can be generated to cycle fluid, to realize the highly efficient operation of CO 2 trans-critical heat pump system on the whole.
Description
Technical field
The present invention relates to heat pump air conditioner technical field more particularly to a kind of CO 2 trans-critical heat pump systems.
Background technique
CO 2 trans-critical heat pump system is as a kind of environment-friendly high-efficiency and reliable and stable comprehensive utilization system for heat energy, often
As building air conditioning, for meeting the commercialization such as supermarket, market, hotel, cinema, school, office building and hospital and public service
The heat supply in winter and summer cooling demand of field heavy construction.
Some researches show that, maximum temperature is up to 140 DEG C in CO 2 trans-critical heat pump system gas cooler, therefore,
CO 2 trans-critical heat pump system is capable of providing the hot water of higher temperature.But existing CO 2 trans-critical heat pump system
System is often merely provided for 45 DEG C or so of constructure heating hot water as building air conditioning, it is difficult to realize the efficient operation of system.
Summary of the invention
The embodiment of the present invention provides a kind of CO 2 trans-critical heat pump system, to solve or part solve it is existing across
Critical carbon dioxide heat pump system is normal as building air conditioning, is only capable of providing constructure heating hot water, running efficiency of system is low to ask
Topic.
The embodiment of the present invention provides a kind of CO 2 trans-critical heat pump system, including sequentially connected compressor, throttling
Device and evaporator further include gas cooling device, and the gas cooling device includes concatenated first gas cooler and
The cycle fluid channel of two gas coolers, the first gas cooler is connect with the compressor, and the second gas is cold
But the cycle fluid channel of device is connect with the throttling set.
CO 2 trans-critical heat pump system provided in an embodiment of the present invention, gas cooling device include concatenated first gas
Body cooler and second gas cooler, the carbon dioxide recycle working medium of high temperature and pressure be introduced into first gas cooler and with stream
Heat exchange occurs for cooling water through first gas cooler, enter back into second gas cooler and with flow through second gas cooler
Cooling water occur heat exchange, cycle fluid the temperature in first gas cooler be higher than its in second gas cooler
Temperature, therefore, the cooling water for flowing through first gas cooler can have compared to the cooling water for flowing through second gas cooler
Higher outlet temperature.By the gas cooling device of subsection setup, realizes to the segmentally heating of water, obtain the heat of different temperatures
Water not only can satisfy different heat demands of using, and can generate better cooling effect to cycle fluid, thus on the whole
Realize the highly efficient operation of CO 2 trans-critical heat pump system.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is CO 2 trans-critical heat pump system structure diagram provided in an embodiment of the present invention；
In figure: 1, compressor；2, throttling set；3, evaporator；4, first gas cooler；5, second gas cooler；
6, preheating gas cooler；7, gas-liquid separator.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
As shown in Figure 1, the embodiment of the invention provides a kind of CO 2 trans-critical heat pump system, including it is sequentially connected
Compressor 1, throttling set 2 and evaporator 3, further include gas cooling device, and gas cooling device includes concatenated first gas
The cycle fluid channel of cooler 4 and second gas cooler 5, first gas cooler 4 is connect with compressor 1, second gas
The cycle fluid channel of cooler 5 is connect with throttling set 2.
CO 2 trans-critical heat pump system provided in an embodiment of the present invention, gas cooling device include concatenated first gas
Body cooler 4 and second gas cooler 5, the carbon dioxide recycle working medium of high temperature and pressure be introduced into first gas cooler 4 with
Heat exchange occurs for the cooling water for flowing through first gas cooler 4, enters back into second gas cooler 5 and flows through second gas cooling
Heat exchange occurs for the cooling water of device 5, and temperature of the cycle fluid in first gas cooler 4 is higher than it in second gas cooler
Temperature in 5, therefore, the cooling water for flowing through first gas cooler 4 can compared to the cooling water for flowing through second gas cooler 5
With higher outlet temperature.
Such as the cooling water that can flow through second gas cooler 5 goes out water temperature in its cooling-water duct water outlet
Degree is 40-50 DEG C, meets the hot water demand of constructure heating；The cooling water that first gas cooler 4 can be flowed through is cold at its
But the leaving water temperature of aquaporin water outlet is 65-90 DEG C, meets the hot water for life demand such as bathing in building.
By the gas cooling device of subsection setup, realizes to the segmentally heating of water, obtain the hot water of different temperatures, not only
Can satisfy it is different use heat demand, and better cooling effect can be generated to cycle fluid, thus realize on the whole across
The highly efficient operation of critical carbon dioxide heat pump system.
CO 2 trans-critical heat pump system provided in an embodiment of the present invention, the cooling-water duct of first gas cooler 4
Including the first water inlet and the first water outlet, the cooling-water duct of second gas cooler 5 includes that the second water inlet and second goes out
The mouth of a river；Gas cooling device can also include preheating gas cooler 6, and preheating gas cooler 6 is set to second gas cooler 5
Between throttling set 2；Preheating gas cooler 6 includes preheating water inlet and pre- hot water outlet, pre- hot water outlet and first into
Mouth of a river connection.Preheating gas cooler 6 is set, makes the carbon dioxide recycle working medium of the compressed high temperature and pressure of compressor 1 successively
By first gas cooler 4, second gas cooler 5 and preheating gas cooler 6, realize further to cycle fluid
It is cooling, and cooling water is preheated using the cycle fluid in preheating gas cooler 6 compared with low-heat quality, thus on the whole
Further improve the Operating ettectiveness of CO 2 trans-critical heat pump system.
Further, CO 2 trans-critical heat pump system provided in an embodiment of the present invention, gas cooling device can be with
It include the first triple valve, the first triple valve includes a water inlet and two water outlets, the water inlet of the first triple valve and pre-
Hot water outlet connection, a water outlet of the first triple valve are connect with the second water inlet, another water outlet of the first triple valve
It is connect with the first water inlet.By the way that the first triple valve is arranged, utilize preheating gas cooler 6 pre- compared with low-heat quality cycle fluid
The cooling water of heat can enter second gas cooler 5 by the second water inlet, and it is cold to enter first gas by the first water inlet
But device 4, and change the water flow of two water outlet by adjusting the first triple valve, further increase critical-cross carbon dioxide
The Operating ettectiveness of heat pump system.
CO 2 trans-critical heat pump system provided in an embodiment of the present invention, gas cooling device can also include second
Triple valve, the second triple valve include a water inlet and two water outlets, and the water inlet of the second triple valve and the second water outlet connect
It connects, a water outlet of the second triple valve is connect with the first water inlet.By the way that the second triple valve is arranged, make cooling through second gas
The cooling water of 5 medium temperature of device heating can be entered in first gas cooler 4 further by a water outlet of the second triple valve
Heating, another water outlet of the second triple valve are then used to directly provide the hot water of medium temperature.From the second of second gas cooler 5
Water outlet draws middle warm water and enters first gas cooler 4, and can be further improved in first gas cooler 4 has relatively
The thermal energy of the cycle fluid of high fever quality efficiently uses, and improves the Operating ettectiveness of CO 2 trans-critical heat pump system.
In gas cooler, cycle fluid and cooling water generate heat exchange, cycle fluid heat release, temperature in heat exchange flowing
Degree reduces, and cooling water heat absorption, temperature increase；Therefore, cycle fluid is higher than its outlet temperature, cooling water in its entrance temperature
It is higher than its entrance temperature in its outlet temperature.So in order to improve heat exchanger efficiency, cycle fluid and cold in gas cooler
But water can be flowed using reverse heat-exchange, make first gas cooler 4, second gas cooler 5 and preheating gas cooler 6
Interior, the flow direction of cycle fluid and the flow direction of cooling water are opposite.
CO 2 trans-critical heat pump system provided in an embodiment of the present invention, can also be between evaporator 3 and compressor 1
Gas-liquid separator 7 is set, 1 air-breathing feed liquor of compressor is prevented.Further, critical-cross carbon dioxide provided in an embodiment of the present invention
Heat pump system is also provided with intercooler, and intercooler includes cold side and heat absorbing side, the cycle fluid of preheating gas cooler 6
Outlet is connect with the import of cold side, and the outlet of cold side is connect with the import of throttling set 2, the import of heat absorbing side and gas-liquid point
Outlet connection from device 7, the outlet of heat absorbing side is connect with the import of compressor 1.It is cooling to outflow preheating gas by intercooler
The cycle fluid of device 6 is further cooled down before throttling set, improves the circulation efficiency of refrigeration cycle.
As can be seen from the above embodiments, CO 2 trans-critical heat pump system provided by the invention, gas cooling device
Including concatenated first gas cooler 4 and second gas cooler 5, the carbon dioxide recycle working medium of high temperature and pressure is introduced into
Simultaneously with the cooling water for flowing through first gas cooler 4 heat exchange occurs for one gas cooler 4, enters back into second gas cooler 5
And heat exchange occurs with the cooling water for flowing through second gas cooler 5, temperature of the cycle fluid in first gas cooler 4 is high
In its temperature in second gas cooler 5, therefore, the cooling water of first gas cooler 4 is flowed through compared to flowing through second
The cooling water of gas cooler 5 can have higher outlet temperature.By the gas cooling device of subsection setup, realize to water
Segmentally heating, obtain the hot water of different temperatures, not only can satisfy it is different use heat demand, and cycle fluid can be produced
Raw better cooling effect, to realize the highly efficient operation of CO 2 trans-critical heat pump system on the whole.
The apparatus embodiments described above are merely exemplary, wherein described, unit can as illustrated by the separation member
It is physically separated with being or may not be, component shown as a unit may or may not be physics list
Member, it can it is in one place, or may be distributed over multiple network units.It can be selected according to the actual needs
In some or all of the modules achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not paying creativeness
Labour in the case where, it can understand and implement.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (9)
1. a kind of CO 2 trans-critical heat pump system, including sequentially connected compressor, throttling set and evaporator, feature
It is, further includes gas cooling device, the gas cooling device includes that concatenated first gas cooler and second gas are cold
But the cycle fluid channel of device, the first gas cooler is connect with the compressor, and the second gas cooler follows
Ring working medium passage is connect with the throttling set.
2. CO 2 trans-critical heat pump system according to claim 1, which is characterized in that the first gas cooler
Cooling-water duct include the first water inlet and the first water outlet, the cooling-water duct of the second gas cooler includes second
Water inlet and the second water outlet；
The gas cooling device further includes preheating gas cooler, and it is cold that the preheating gas cooler is set to the second gas
But between device and the throttling set；
The preheating gas cooler includes preheating water inlet and pre- hot water outlet, and the pre- hot water outlet and described first are intake
Mouth connection.
3. CO 2 trans-critical heat pump system according to claim 2, which is characterized in that the gas cooling device is also
Including the first triple valve, the water inlet of first triple valve is connect with the pre- hot water outlet, and the one of first triple valve
A water outlet is connect with second water inlet, another water outlet of first triple valve and first water inlet connect
It connects.
4. CO 2 trans-critical heat pump system according to claim 2, which is characterized in that the gas cooling device is also
Including the second triple valve, the water inlet of second triple valve is connect with second water outlet, and the one of second triple valve
A water outlet is connect with first water inlet.
5. CO 2 trans-critical heat pump system according to claim 2, which is characterized in that the first gas is cooling
In device, the second gas cooler and the preheating gas cooler, cycle fluid and cooling water are reverse heat-exchange flowing.
6. CO 2 trans-critical heat pump system according to claim 5, which is characterized in that the critical-cross carbon dioxide
Heat pump system further includes gas-liquid separator, and the gas-liquid separator is set between the evaporator and the compressor.
7. CO 2 trans-critical heat pump system according to claim 6, which is characterized in that the critical-cross carbon dioxide
Heat pump system further includes intercooler, and the intercooler includes cold side and heat absorbing side, the circulation industrial of the preheating gas cooler
Matter outlet is connect with the import of the cold side, and the outlet of the cold side is connect with the import of the throttling set, the suction
The import of hot side is connect with the outlet of the gas-liquid separator, and the outlet of the heat absorbing side is connect with the import of the compressor.
8. according to the described in any item CO 2 trans-critical heat pump systems of claim 2-7, which is characterized in that described second goes out
The leaving water temperature at the mouth of a river is 40-50 DEG C.
9. according to the described in any item CO 2 trans-critical heat pump systems of claim 2-7, which is characterized in that described first goes out
The leaving water temperature at the mouth of a river is 65-90 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910569968.9A CN110186221A (en) | 2019-06-27 | 2019-06-27 | CO 2 trans-critical heat pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910569968.9A CN110186221A (en) | 2019-06-27 | 2019-06-27 | CO 2 trans-critical heat pump system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110186221A true CN110186221A (en) | 2019-08-30 |
Family
ID=67723798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910569968.9A Pending CN110186221A (en) | 2019-06-27 | 2019-06-27 | CO 2 trans-critical heat pump system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110186221A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007022778A1 (en) * | 2005-08-25 | 2007-03-01 | Knudsen Køling A/S | A transcritical cooling system with improved cooling capacity |
| CN201244179Y (en) * | 2008-07-22 | 2009-05-27 | 天津商业大学 | High-efficient energy-saving heat pump sauna system |
| CN105042931A (en) * | 2015-07-03 | 2015-11-11 | 浙江大学 | Combined heat pump system adopting trans-critical circulation and absorption heat pump co-production |
| CN105222385A (en) * | 2015-10-20 | 2016-01-06 | 西安交通大学 | A kind of Trans-critical cycle CO 2combined heat-pump system |
| CN106766316A (en) * | 2016-12-23 | 2017-05-31 | 燕园德普科技（北京）有限公司 | A kind of Gas-supplying enthalpy-increasing CO suitable for cold district2Part overlapping heat pump |
| CN106801995A (en) * | 2017-01-16 | 2017-06-06 | 清华大学 | Carbon dioxide heat-pump hot-water heating system and the carbon dioxide heat-pump hot water apparatus with it |
| CN210425633U (en) * | 2019-06-27 | 2020-04-28 | 中国科学院理化技术研究所 | Transcritical carbon dioxide heat pump system |
-
2019
- 2019-06-27 CN CN201910569968.9A patent/CN110186221A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007022778A1 (en) * | 2005-08-25 | 2007-03-01 | Knudsen Køling A/S | A transcritical cooling system with improved cooling capacity |
| CN201244179Y (en) * | 2008-07-22 | 2009-05-27 | 天津商业大学 | High-efficient energy-saving heat pump sauna system |
| CN105042931A (en) * | 2015-07-03 | 2015-11-11 | 浙江大学 | Combined heat pump system adopting trans-critical circulation and absorption heat pump co-production |
| CN105222385A (en) * | 2015-10-20 | 2016-01-06 | 西安交通大学 | A kind of Trans-critical cycle CO 2combined heat-pump system |
| CN106766316A (en) * | 2016-12-23 | 2017-05-31 | 燕园德普科技（北京）有限公司 | A kind of Gas-supplying enthalpy-increasing CO suitable for cold district2Part overlapping heat pump |
| CN106801995A (en) * | 2017-01-16 | 2017-06-06 | 清华大学 | Carbon dioxide heat-pump hot-water heating system and the carbon dioxide heat-pump hot water apparatus with it |
| CN210425633U (en) * | 2019-06-27 | 2020-04-28 | 中国科学院理化技术研究所 | Transcritical carbon dioxide heat pump system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103822398B (en) | Heat pump air-conditioning hot water group | |
| US20100170655A1 (en) | Air Supply Unit | |
| CN110278691A (en) | Pump for high power density cabinet drives two-phase loop cooling system | |
| CN106642792B (en) | Enhanced vapor injection air conditioning unit | |
| CN101749812A (en) | Multifunctional air-conditioning system | |
| CN106705298A (en) | Multi-connection type fresh air conditioner unit with exhaust air heat pump heat recovery function and heat exchange method | |
| JP2007139262A (en) | Water-cooled heat pump type air conditioner | |
| CN106123174A (en) | A kind of split type semiconductor air-conditioner of cold, hot two-purpose | |
| CN101290148A (en) | Water energy-saving system for air quantity variable air conditioner | |
| CN108332327B (en) | Air treatment equipment | |
| CN106440149A (en) | Closed indirect evaporative cooling and mechanical refrigerating combined operation water chilling unit | |
| CN110186221A (en) | CO 2 trans-critical heat pump system | |
| CN210425633U (en) | Transcritical carbon dioxide heat pump system | |
| JP2005195265A (en) | Compression exhaust heat using system and compression exhaust heat using method of multi-stage air compressor | |
| CN209756713U (en) | heat management device and vehicle with same | |
| CN103225930A (en) | Total heat recovery multi-cycle multipurpose air conditioning unit | |
| CN203323448U (en) | Coolant multi-branch-circuit total heat recovery air conditioning unit | |
| CN203880864U (en) | Heat exchange system for air conditioner and water heater | |
| CN107917547A (en) | The coolant circulating device of heat pump air-conditioner/water heater | |
| CN219036870U (en) | Multi-split air conditioner system | |
| CN205425257U (en) | Device of energy -saving air conditioner cooling | |
| CN111660754A (en) | Thermal management device, control method thereof and vehicle with thermal management device | |
| US20240044556A1 (en) | Air Conditioning, Heat Pump and Water Heating System | |
| CN214307400U (en) | Air conditioning system utilizing waste heat of air separation production | |
| CN208978588U (en) | The heat pump air conditioning system of electric car |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |