CN108826728A - A kind of efficient CO2Heat pump waste-heat recovery device - Google Patents
A kind of efficient CO2Heat pump waste-heat recovery device Download PDFInfo
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- CN108826728A CN108826728A CN201810638447.XA CN201810638447A CN108826728A CN 108826728 A CN108826728 A CN 108826728A CN 201810638447 A CN201810638447 A CN 201810638447A CN 108826728 A CN108826728 A CN 108826728A
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- Prior art keywords
- refrigerant
- heat
- pressure pipeline
- outlet
- entrance
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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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)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a kind of efficient CO2Heat pump waste-heat recovery device, including compressor, gas cooler, throttle valve, residual evaporator and gas-liquid separator, the residual evaporator includes waste heat fluid line, refrigerant tubing, liquid separation packet, capillary and injector, refrigerant tubing includes refrigerant high pressure pipeline and refrigerant low pressure pipeline, the outlet of refrigerant high pressure pipeline is connected with the entrance of liquid separation packet, the gas vent of liquid separation packet is connected with the Working-fluid intaking of injector, the liquid outlet of liquid separation packet is connected through capillary with the entrance of refrigerant low pressure pipeline, the outlet of refrigerant low pressure pipeline is connected with the driving fluid entrance of injector.The present invention realizes the heat transfer of multiple temperature ranges using single evaporator, effectively improves utilization rate of waste heat, promotes compressor inlet pressure by injector and improves the thermal efficiency of heat pump system so that compressor power consumption be effectively reduced.
Description
Technical field
The present invention relates to heat recovery technology fields, and in particular to a kind of efficient CO2Heat pump waste-heat recovery device.
Background technique
CO2Heat pump is a kind of heat pump techniques of environment-friendly high-efficiency, compared with existing heat pump, has leaving water temperature height (60-90
DEG C), efficiency it is high, using outstanding advantages such as environmental protection refrigerants, be particularly suitable for using low temperature exhaust heat (such as power plant cooling water waste heat,
Industrial wastewater waste heat, sewer waste heat, subway waste heat etc.) recycling substitution boiler progress central heating, as northern coal changes electricity etc.
The implementation of environmentally friendly behave, CO2Heat pump will become the major technique of northern China cleaning heating.
Utilize CO2Heat pump carries out in waste heat removal process, and waste heat exchanges heat with the refrigerant in evaporator.Wherein freeze
Agent is absorbed heat in evaporator to be undergone phase transition, and steam is generated, and whole process refrigerant temperature is held essentially constant；And it is for heating
Waste heat supply temperature reduces, and realizes the recycling of partial heat.Refrigerant power pressure in conventional heat pump system, in evaporator
It is held essentially constant.When evaporating pressure setting is higher, heat pump system efficiency is improved, but waste heat recovery rate is lower；And it uses low
When evaporating pressure, evaporating temperature is reduced, and improves the utilization rate of waste heat, but the thermal efficiency of heat pump system can decrease.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of efficient CO2Heat pump waste-heat recovery device is based on exhaust heat stepped benefit
Principle improves the thermal efficiency of heat pump system while effectively improving waste heat recovery rate.
In order to achieve the above object, the technical solution adopted by the present invention is that：
A kind of efficient CO2Heat pump waste-heat recovery device, including compressor, gas cooler, throttle valve, residual evaporator and
Gas-liquid separator, the residual evaporator include waste heat fluid line, refrigerant tubing, liquid separation packet, capillary and injector, system
Cryogen pipeline includes refrigerant high pressure pipeline and refrigerant low pressure pipeline, and the outlet of compressor and the refrigerant of gas cooler enter
Mouth is connected, and the refrigerant outlet of gas cooler is connected through throttle valve with the entrance of refrigerant high pressure pipeline, refrigerant high pressure pipe
The outlet in road is connected with the entrance of liquid separation packet, and the gas vent of liquid separation packet is connected with the Working-fluid intaking of injector, liquid separation packet
Liquid outlet be connected through capillary with the entrance of refrigerant low pressure pipeline, the outlet of refrigerant low pressure pipeline and drawing for injector
Jet body entrance is connected, and the outlet of injector is connected with the entrance of gas-liquid separator, the gas vent of gas-liquid separator and compression
The entrance of machine is connected.
Further, the residual evaporator uses double pipe heat exchanger, and refrigerant tubing is set in waste heat fluid line
In.
Further, in the residual evaporator, waste heat fluid is consistent with the flow direction of refrigerant.
Further, the waste heat fluid line includes the supervisor of multilayer parallel setting, passes through setting between each layer supervisor
Branch pipe in end is connected to.
Further, the refrigerant high pressure pipeline and refrigerant low pressure pipeline are that single pipe is integrally formed, pressure-bearing property
Can be good, it is not easy to reveal.
Further, the liquid separation packet is the gas-liquid separator of spherical shell type structure, and structure is simple, and liquid separation is high-efficient.
Compared with the prior art, the advantages of the present invention are as follows：
The present invention realizes the heat transfer of multiple temperature ranges using single evaporator, effectively improves utilization rate of waste heat.Pass through
Injector promotes compressor inlet pressure and improves the thermal efficiency of heat pump system so that compressor power consumption be effectively reduced.In addition, this
The advantages that invention device also has structure simple, easy to process, and load performance is good and low manufacture cost.
Detailed description of the invention
Fig. 1 is CO of the present invention2The structural schematic diagram of heat pump waste-heat recovery device.
Fig. 2 is the structural schematic diagram of residual evaporator of the present invention.
Description of symbols：1- compressor；2- gas cooler；The outlet of 3- heat donor fluid；4- heat donor fluid entrance；More than 5-
Hot vaporizer；6- waste heat fluid inlet；7- waste heat fluid outlet；8- capillary；9- injector；10- gas-liquid separator；11- points
Liquid packet；12- throttle valve；13- refrigerant high pressure pipeline；14- refrigerant low pressure pipeline；15- supervisor；16- branch pipe.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Embodiment：
As depicted in figs. 1 and 2, a kind of efficient CO2Heat pump waste-heat recovery device, including compressor 1, gas cooler 2, confession
Hot fluid outlet ports 3, heat donor fluid entrance 4, residual evaporator 5, gas-liquid separator 10 and throttle valve 12.
Residual evaporator 5 uses double pipe heat exchanger, and refrigerant walks inner tube, and waste heat fluid walks outer tube, including waste heat fluid
Entrance 6, waste heat fluid outlet 7, capillary 8, injector 9, liquid separation packet 11, waste heat fluid line and refrigerant tubing.
Refrigerant tubing is different according to refrigerant pressure and is divided into upper layer and lower layer, and upper layer is refrigerant high pressure pipeline 13,
Interior refrigerant pressure is higher, and lower layer is refrigerant low pressure pipeline 14, in refrigerant pressure it is lower, it is logical among two layers pipeline
It crosses liquid separation packet 11 and capillary 8 connects.Refrigerant high pressure pipeline 13 and refrigerant low pressure pipeline 14 by single copper pipe one at
Type (bends to shape shown in Fig. 2), in addition to two end interfaces, does not set other interfaces, to ensure its pressure-bearing and sealing performance.
Waste heat fluid line includes multilayer supervisor 15 disposed in parallel from top to bottom, passes through end between each layer supervisor 15
Branch pipe 16 is connected to.Refrigerant high pressure pipeline 13 and 14 middle section of refrigerant low pressure pipeline are set in each supervisor 15, and end is stretched
15 outside of supervisor out.
The connection type of various parts is as follows：The outlet of compressor 1 is connected with the refrigerant inlet of gas cooler 2,
The refrigerant outlet of gas cooler 2 is connected through throttle valve 12 with the entrance of refrigerant high pressure pipeline 13, refrigerant high pressure pipeline
13 outlet is connected with the entrance of liquid separation packet 11, and the gas vent of liquid separation packet 11 is connected with the Working-fluid intaking of injector 9, point
The liquid outlet of liquid packet 11 is connected through capillary 8 with the entrance of refrigerant low pressure pipeline 14, the outlet of refrigerant low pressure pipeline 14
It is connected with the driving fluid entrance of injector 9, the outlet of injector 9 is connected with the entrance of gas-liquid separator 10, gas-liquid separator
10 gas vent is connected with the entrance of compressor 1.
The working principle of apparatus of the present invention is：
Refrigerant fluid after compressor 1 temperature increase, high temperature refrigerant enter in gas cooler 2 with external heating
Fluid exchanges heat, and refrigerant temperature reduces, and external heating fluid temperature (F.T.) increases, outward supplying heat；The lower refrigerant stream of temperature
Body temperature and pressure reduction after throttle valve 12, subsequently into absorbing heat in residual evaporator 5,5 exit of residual evaporator connects
The gas-liquid separator 10 connect is for separating gaseous state and liquid refrigerant；Gaseous refrigerant 10 separation from gas-liquid separator, then
Into compressor 1, heat pump cycle is so far completed.
In residual evaporator 5, waste heat fluid is entered by the waste heat fluid inlet 6 that 15 left ends are responsible at top, then from upper and
Lower flowing is finally flowed out from the waste heat fluid outlet 7 that 15 right ends are responsible in bottom.The entrance of refrigerant is located at refrigerant high pressure pipeline
13 top lefts, the outlet of refrigerant is located at 14 bottom right end of refrigerant low pressure pipeline, so that waste heat fluid and refrigerant fluid
Flow direction in pipe is consistent.
The low-temperature refrigerant fluid come out from throttle valve 12 enters cryogen pressure piping 13 and the higher waste heat of external temperature
Fluid is once exchanged heat, residual heat stream temperature reduction, and refrigerant temperature enters liquid separation packet 11 after increasing.Liquid separation packet 11 is a kind of
Easy gas-liquid separator, using spherical shell type structure, structure is simple, and liquid separation is high-efficient, and entrance is arranged in centre.Liquid separation packet 11 divides
It separates out the high pressure refrigerant vapor come and injector 9 is entered by the gas vent at top, the working fluid as injector 9；Liquid
State refrigerant is then flowed out from the liquid outlet of bottom, and pressure declines when entering refrigerant low pressure pipeline 14 after capillary 8, by
It is lower in refrigerant pressure at this time, therefore secondary heat exchange can be carried out with the waste heat fluid after primary heat exchange, further more than absorption
The heat of hot fluid becomes low pressure refrigerant vapor and enters injector 9, the driving fluid as injector 9.Injector 9 is promoted low
The pressure of steam is pressed to be sent into gas-liquid separator 10, so that 1 inlet pressure of compressor is improved, so that compressor 1 be effectively reduced
Power consumption, the thermal efficiency for improving heat pump system.
To sum up, the present invention realizes the UTILIZATION OF VESIDUAL HEAT IN of more potential temperatures by the residual evaporator with injector, and effectively improves pressure
Contracting machine inlet pressure realizes the efficient utilization of waste heat while improving the heat pump system thermal efficiency.
Simply to illustrate that technical concepts and features of the invention, its purpose is allows in the art above-described embodiment
Those of ordinary skill cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all
It is the equivalent changes or modifications that the essence of content according to the present invention is made, should be covered by the scope of protection of the present invention.
Claims (6)
1. a kind of efficient CO2Heat pump waste-heat recovery device, including compressor, gas cooler, throttle valve, residual evaporator are gentle
Liquid/gas separator, it is characterised in that：The residual evaporator include waste heat fluid line, refrigerant tubing, liquid separation packet, capillary and
Injector, refrigerant tubing include refrigerant high pressure pipeline and refrigerant low pressure pipeline, the outlet of compressor and gas cooler
Refrigerant inlet be connected, the refrigerant outlet of gas cooler is connected through throttle valve with the entrance of refrigerant high pressure pipeline, make
The outlet of cryogen pressure piping is connected with the entrance of liquid separation packet, the Working-fluid intaking phase of the gas vent and injector of liquid separation packet
Even, the liquid outlet of liquid separation packet is connected through capillary with the entrance of refrigerant low pressure pipeline, the outlet of refrigerant low pressure pipeline and
The driving fluid entrance of injector is connected, and the outlet of injector is connected with the entrance of gas-liquid separator, the gas of gas-liquid separator
Outlet is connected with the entrance of compressor.
2. efficient CO according to claim 12Heat pump waste-heat recovery device, it is characterised in that：The residual evaporator uses
Double pipe heat exchanger, refrigerant tubing are set in waste heat fluid line.
3. efficient CO according to claim 22Heat pump waste-heat recovery device, it is characterised in that：In the residual evaporator,
Waste heat fluid is consistent with the flow direction of refrigerant.
4. efficient CO according to claim 32Heat pump waste-heat recovery device, it is characterised in that：The waste heat fluid line packet
The supervisor of multilayer parallel setting is included, is connected between each layer supervisor by the way that the branch pipe of end is arranged in.
5. efficient CO according to claim 1 to 42Heat pump waste-heat recovery device, it is characterised in that：The refrigerant is high
Pressure pipeline and refrigerant low pressure pipeline are that single pipe is integrally formed.
6. efficient CO according to claim 52Heat pump waste-heat recovery device, it is characterised in that：The liquid separation packet is spherical shell type
The gas-liquid separator of structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810638447.XA CN108826728A (en) | 2018-06-20 | 2018-06-20 | A kind of efficient CO2Heat pump waste-heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810638447.XA CN108826728A (en) | 2018-06-20 | 2018-06-20 | A kind of efficient CO2Heat pump waste-heat recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108826728A true CN108826728A (en) | 2018-11-16 |
Family
ID=64141644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810638447.XA Pending CN108826728A (en) | 2018-06-20 | 2018-06-20 | A kind of efficient CO2Heat pump waste-heat recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108826728A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392969A (en) * | 2008-10-23 | 2009-03-25 | 浙江理工大学 | Heat pump air conditioning system |
| JP2013213605A (en) * | 2012-04-02 | 2013-10-17 | Sharp Corp | Refrigeration cycle, and refrigerator-freezer |
| CN103982933A (en) * | 2014-05-26 | 2014-08-13 | 北京建筑大学 | Spraying-compression combination type large temperature difference heat exchanger unit |
| CN104949390A (en) * | 2015-06-25 | 2015-09-30 | 西安交通大学 | Transcritical CO2 heat pump system for heating radiator heating |
-
2018
- 2018-06-20 CN CN201810638447.XA patent/CN108826728A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392969A (en) * | 2008-10-23 | 2009-03-25 | 浙江理工大学 | Heat pump air conditioning system |
| JP2013213605A (en) * | 2012-04-02 | 2013-10-17 | Sharp Corp | Refrigeration cycle, and refrigerator-freezer |
| CN103982933A (en) * | 2014-05-26 | 2014-08-13 | 北京建筑大学 | Spraying-compression combination type large temperature difference heat exchanger unit |
| CN104949390A (en) * | 2015-06-25 | 2015-09-30 | 西安交通大学 | Transcritical CO2 heat pump system for heating radiator heating |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181116 |
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| RJ01 | Rejection of invention patent application after publication |