CN108458512A - A kind of carbon dioxide air source heat pump system - Google Patents
A kind of carbon dioxide air source heat pump system Download PDFInfo
- Publication number
- CN108458512A CN108458512A CN201810205416.5A CN201810205416A CN108458512A CN 108458512 A CN108458512 A CN 108458512A CN 201810205416 A CN201810205416 A CN 201810205416A CN 108458512 A CN108458512 A CN 108458512A
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- China
- Prior art keywords
- carbon dioxide
- heat pump
- temperature
- compressors
- air source
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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
- 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
-
- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
-
- 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
- F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure
Abstract
The present invention relates to a kind of carbon dioxide air source heat pump systems, including R744 compressors, first kind absorption heat exchange device, electromagnetic expanding valve, outdoor evaporator and R744 gas-liquid separators, the R744 compressors, first kind absorption heat exchange device, electromagnetic expanding valve, outdoor evaporator and R744 gas-liquid separators are sequentially connected along carbon dioxide flow direction, and the first kind absorption heat exchange device includes absorption type heat pump assembly and heat exchanger.The present invention replaces traditional gas cooler using first kind absorption heat exchange device, and condensation temperature is limited by the technical barrier of water side entrance temperature when efficiently solving single stage carbon dioxide system trans critical cycle system operation.
Description
Technical field
The present invention relates to field of heating ventilation air conditioning, and in particular to a kind of carbon dioxide air source heat pump system.
Background technology
The destruction of ozone layer and climate warming are the main Environmental Problems that the current whole world is faced.Due to refrigeration, air-conditioning, heat
The widely used CFC and HCFC class refrigerants of industries such as pump have the problems such as destroying ozone layer and causing greenhouse effects, in addition people
Improvement of living standard, various countries the demand of the systems such as refrigeration, air-conditioning, heat pump is continuously increased, refrigerant substitute become people
The problem of becoming more concerned with.
In the substitute research of CFC, FCHC, natural refrigerant causes each national literature due to its good environment friendly
Person's note that CO2Due to its good thermophysical property it is the ideal substitute of conventional refrigerants as a kind of natural refrigerant
One of.CO2Global warming index (GWP=1) very little, while not destroying ozone layer (ODP=0), safety, low toxicity, not burning.
In addition, CO2Chemical property stabilization is not reacted with lubricating oil and metal and nonmetallic equal materials, will not be decomposed under high temperature
Evil gas, compares the device easily revealed suitable for refrigerants such as air conditioning for automobiles, household heat pump water heaters.In addition, CO2Stagnation temperature
It spends relatively low, it is easy to accomplish Trans-critical cycle operates, and since the refrigerating capacity of its unit volume is big, it is possible to reduce compressor and heat exchanger
Size, applied to there is certain advantage in refrigeration compression cycle.In addition, carbon dioxide heat pump system is transported under Trans-critical cycle state
When row, the temperature glide in carbon dioxide exothermic process can preferably match with temperature-variable heat source, reduce heat transfer temperature difference, therefore it is across facing
High exhaust temperature and temperature glide possessed by boundary's cycle are very suitable for for carrying out water temperature heating.
Carbon dioxide heat pump system disclosed in the prior art (such as CN104061704A) mainly include liquid storage device, compressor,
Gas cooler and evaporator etc., since return water temperature is often higher in heating system, and conventional gas cooler outlet temperature
Degree is typically slightly above the inlet temperature (i.e. the outlet temperature of gas cooler is limited by water side entrance temperature) of cooling medium, can not
Carbon dioxide is cooled to critical-temperature hereinafter, therefore cannot achieve trans critical cycle, is followed to limit CO 2 cross-critical
The application of ring.
Invention content
For the above-mentioned technical problems in the prior art, the present invention replaces tradition using first kind absorption heat exchange device
Gas cooler, be used for carbon dioxide air source heat pump system, to realize the Trans-critical cycle of carbon dioxide in heating circulation system
Cycle.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：A kind of carbon dioxide air source heat pump system,
It is described including R744 compressors, first kind absorption heat exchange device, electromagnetic expanding valve, outdoor evaporator and R744 gas-liquid separators
R744 compressors, first kind absorption heat exchange device, electromagnetic expanding valve, outdoor evaporator and R744 gas-liquid separators are along carbon dioxide
Flow direction is sequentially connected, wherein
The first kind absorption heat exchange device includes absorption type heat pump assembly and heat exchanger, after R744 compressor compresses
Supercritical carbon dioxide gas passes through the generator of absorption type heat pump assembly, heat exchanger, the evaporation of absorption type heat pump assembly successively
Device is cooled to the carbon dioxide liquid of cryogenic high pressure, flows to electromagnetic expanding valve, and the heating water return of water side one end is successively through absorbing
It is flowed out after absorber and condenser and the heat exchanger heating of formula heat pump machine.
Further, the input end of the first kind absorption heat exchange device is respectively equipped with the first temperature, pressure one with outlet end
One body surface of body surface and second temperature pressure.
Further, the outlet temperature of carbon dioxide is less than returning in water lateral line in the first kind absorption heat exchange device
Coolant-temperature gage.
Further, the outdoor evaporator includes electric-heating defrosting device, when the outdoor evaporator detects wall surface temperature
When degree is less than 1 DEG C, R744 compressors are out of service, and electric-heating defrosting device is opened, while outdoor fan is remained operational to accelerate to remove
White rate.
Beneficial effects of the present invention：The present invention replaces common gas cooler using first kind absorption heat exchange device, uses
In carbon dioxide air source heat pump system so that return water temperature is higher in the circulatory system of water side, and postcritical two
Carbon oxide gas remains to the carbon dioxide liquid for being cooled to cryogenic high pressure after first kind absorption heat exchange device, realizes dioxy
Change the trans critical cycle of carbon.Meanwhile the return water temperature of the sides the Zhong Shui of the present invention circulatory system is more than by first kind absorption heat exchange
Refrigerant exit temperature after device, when efficiently solving single stage carbon dioxide system trans critical cycle system operation condensation temperature by
It is formed on the technical barrier of water side entrance temperature.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of carbon dioxide air source heat pump system provided in an embodiment of the present invention；
In figure：
1-R744 compressors, 2- first kind absorption heat exchanges device, 21- absorption type heats pump assembly, 22- heat exchangers, 3- electromagnetism
Expansion valve, 4- outdoor evaporators, 41- electric-heating defrosting devices, 5-R744 gas-liquid separators, one body surface of the first temperature, pressures of 6-, 7-
One body surface of second temperature pressure.
Specific implementation mode
In the following, specific embodiments of the present invention are described in detail in conjunction with attached drawing, but it is not as limiting to the invention.
As shown in Figure 1, a kind of carbon dioxide air source heat pump system, including R744 compressors 1, first kind absorption heat exchange
Device 2, electromagnetism expansion 3, outdoor evaporator 4 and R744 gas-liquid separators 5, the R744 compressors 1, first kind absorption heat exchange device
2, electromagnetic expanding valve 3, outdoor evaporator 4 and R744 gas-liquid separators 5 are sequentially connected along carbon dioxide flow direction, wherein
First kind absorption heat exchange device 2 includes absorption type heat pump assembly 21 and heat exchanger 22, after the compression of R744 compressors 1
Supercritical carbon dioxide gas enter absorption type heat pump assembly 21, in its generator heating concentration lithium-bromide solution, reduce
It is flowed out after certain temperature, is used as heat source into heat exchanger 22, the heating water return in water lateral line is heated, from heat exchanger 22 after cooling
Outflow, again returns to absorption type heat pump assembly 21, and cooling is flows out in its evaporator after liquid, into the section of electromagnetic expanding valve 3
Stream decompression；And the heating water return in the circulatory system of water side divides two-way to enter first kind absorption heat exchange device 2 is heated, all the way directly
Tap into absorption type heat pump assembly 21, absorb heat in its absorber and condenser, flowed out after being heated, another way by into
Enter heat exchanger 22, the carbon dioxide heat exchange with high temperature is flowed out after heating up, and two-way hot water is sent out after converging and carries out heat supply.
The carbon dioxide liquid of cryogenic high pressure throttles after the outflow of first kind absorption heat exchange device 2 into electromagnetic expanding valve 3
Decompression, subsequently into outdoor evaporator 4, at this point, the heat that carbon dioxide liquid absorbs in air becomes gas, into R744 gas
Liquid/gas separator 5, the carbon dioxide gas for being again transformed into low-temp low-pressure enter R744 compressors 1.
In operational process, the first temperature, pressure of observation first kind absorption heat exchange device 2 input end and outlet end can be passed through
One body surface 7 of one body surface 6 and second temperature pressure confirms whether system operation is normal, while being also seen that the carbon dioxide air
Whether source heat pump system realizes carbon dioxide trans-critical cycle.
The outdoor evaporator 4 further includes electric-heating defrosting device 41, when the outdoor evaporator 4 detects that wall surface temperature is low
When 1 DEG C, R744 compressors 1 are out of service, and electric-heating defrosting device 41 is opened, while outdoor fan is remained operational to accelerate to defrost
Rate.
The present invention replaces gas cooler using first kind absorption heat exchange device 2, real to the heat of supercritical carbon dioxide
Existing cascade utilization, when the return water temperature in the circulatory system of water side is higher, the outlet temperature of refrigerant carbon dioxide can be less than water
Return water temperature in the circulatory system of side, at this point, remaining to realize the trans critical cycle of carbon dioxide.
Above example is only exemplary embodiment of the present invention, is not used in the limitation present invention, protection scope of the present invention
It is defined by the claims.Those skilled in the art can within the spirit and scope of the present invention make respectively the present invention
Kind modification or equivalent replacement, this modification or equivalent replacement also should be regarded as being within the scope of the present invention.
Claims (4)
1. a kind of carbon dioxide air source heat pump system, which is characterized in that changed including R744 compressors (1), the first kind absorption type
Hot device (2), electromagnetic expanding valve (3), outdoor evaporator (4) and R744 gas-liquid separators (5), the R744 compressors (1), first
Kind absorption type heat exchanger (2), electromagnetic expanding valve (3), outdoor evaporator (4) and R744 gas-liquid separators (5) are along carbon dioxide stream
To being sequentially connected, wherein the first kind absorption heat exchange device (2) includes absorption type heat pump assembly (21) and heat exchanger (22),
Pass through the generator of absorption type heat pump assembly (21) successively through R744 compressors (1) compressed supercritical carbon dioxide gas,
Heat exchanger (22), the evaporator of absorption type heat pump assembly (21), is cooled to the carbon dioxide liquid of cryogenic high pressure, it is swollen to flow to electromagnetism
Swollen valve (3), and the successively absorber through absorption heat pump unit (21) and condenser and the heat exchange of the heating water return of water side one end
It is flowed out after device (22) heating.
2. a kind of carbon dioxide air source heat pump system according to claim 1, which is characterized in that the first kind absorbs
The input end of formula heat exchanger (2) is respectively equipped with one body surface of one body surface of the first temperature, pressure (6) and second temperature pressure with outlet end
(7)。
3. a kind of carbon dioxide air source heat pump system according to claim 2, which is characterized in that the first kind absorbs
The outlet temperature of carbon dioxide is less than the return water temperature in water lateral line in formula heat exchanger (2).
4. a kind of carbon dioxide air source heat pump system according to claim 3, which is characterized in that the outdoor evaporator
(4) include electric-heating defrosting device (41), when the outdoor evaporator (4) detects that wall surface temperature is less than 1 DEG C, R744 compressors
(1) out of service, electric-heating defrosting device (41) is opened, while outdoor fan is remained operational to accelerate the rate that defrosts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810205416.5A CN108458512A (en) | 2018-03-13 | 2018-03-13 | A kind of carbon dioxide air source heat pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810205416.5A CN108458512A (en) | 2018-03-13 | 2018-03-13 | A kind of carbon dioxide air source heat pump system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108458512A true CN108458512A (en) | 2018-08-28 |
Family
ID=63219855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810205416.5A Pending CN108458512A (en) | 2018-03-13 | 2018-03-13 | A kind of carbon dioxide air source heat pump system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595844A (en) * | 2018-12-21 | 2019-04-09 | 无锡市富邦纺机制造有限公司 | A kind of Auto-cascade cycle carbon dioxide air source heat pump |
| CN110103668A (en) * | 2019-05-24 | 2019-08-09 | 上汽大众汽车有限公司 | The heat pump air conditioner of automobile |
| CN110920646A (en) * | 2019-12-23 | 2020-03-27 | 甘肃一德新能源设备有限公司 | Sterilization carbon dioxide heat pump locomotive air-conditioning heat unit |
| US20230213247A1 (en) * | 2022-01-02 | 2023-07-06 | AirMyne, Inc. | Using Carbon Dioxide From A Direct Air Capture System As A Low Global Warming Car And Industrial Refrigerant |
| US11801476B2 (en) | 2022-01-02 | 2023-10-31 | AirMyne, Inc. | Efficient and fully automated catalytic direct carbon dioxide capture from air system |
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| US6374630B1 (en) * | 2001-05-09 | 2002-04-23 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Carbon dioxide absorption heat pump |
| JP2004286289A (en) * | 2003-03-20 | 2004-10-14 | Sanyo Electric Co Ltd | Refrigerant cycle device |
| CN101943470A (en) * | 2009-07-09 | 2011-01-12 | 清华大学 | Novel absorption gas-water heat exchange unit |
| CN102563969A (en) * | 2012-02-10 | 2012-07-11 | 山东美琳达再生能源开发有限公司 | Double-system heat pump device capable of realizing circular heating and heating method |
| 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 |
| 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 |
| CN208091001U (en) * | 2018-03-13 | 2018-11-13 | 中铁工程设计咨询集团有限公司 | A kind of carbon dioxide air source heat pump system |
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2018
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Patent Citations (7)
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| JP2004286289A (en) * | 2003-03-20 | 2004-10-14 | Sanyo Electric Co Ltd | Refrigerant cycle device |
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| CN102563969A (en) * | 2012-02-10 | 2012-07-11 | 山东美琳达再生能源开发有限公司 | Double-system heat pump device capable of realizing circular heating and heating method |
| 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 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595844A (en) * | 2018-12-21 | 2019-04-09 | 无锡市富邦纺机制造有限公司 | A kind of Auto-cascade cycle carbon dioxide air source heat pump |
| CN109595844B (en) * | 2018-12-21 | 2024-03-19 | 无锡市富邦纺机制造有限公司 | Self-overlapping carbon dioxide air source heat pump |
| CN110103668A (en) * | 2019-05-24 | 2019-08-09 | 上汽大众汽车有限公司 | The heat pump air conditioner of automobile |
| CN110920646A (en) * | 2019-12-23 | 2020-03-27 | 甘肃一德新能源设备有限公司 | Sterilization carbon dioxide heat pump locomotive air-conditioning heat unit |
| US20230213247A1 (en) * | 2022-01-02 | 2023-07-06 | AirMyne, Inc. | Using Carbon Dioxide From A Direct Air Capture System As A Low Global Warming Car And Industrial Refrigerant |
| US11801476B2 (en) | 2022-01-02 | 2023-10-31 | AirMyne, Inc. | Efficient and fully automated catalytic direct carbon dioxide capture from air system |
| US11906227B2 (en) * | 2022-01-02 | 2024-02-20 | AirMyne, Inc. | Using carbon dioxide from a direct air capture system as a low global warming car and industrial refrigerant |
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