CN107869857A - One kind is based on the second kind absorption type mixing heat pump - Google Patents
One kind is based on the second kind absorption type mixing heat pump Download PDFInfo
- Publication number
- CN107869857A CN107869857A CN201711085622.9A CN201711085622A CN107869857A CN 107869857 A CN107869857 A CN 107869857A CN 201711085622 A CN201711085622 A CN 201711085622A CN 107869857 A CN107869857 A CN 107869857A
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- Prior art keywords
- heat
- evaporator
- heat exchanger
- condenser
- absorber
- Prior art date
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- Pending
Links
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 20
- 238000002156 mixing Methods 0.000 title claims abstract description 9
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims abstract description 40
- 239000006096 absorbing agent Substances 0.000 claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 229940059936 lithium bromide Drugs 0.000 claims abstract description 20
- 239000010865 sewage Substances 0.000 claims abstract description 17
- 238000013461 design Methods 0.000 claims abstract description 10
- 239000008236 heating water Substances 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 230000008929 regeneration Effects 0.000 claims abstract description 4
- 238000011069 regeneration method Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000001704 evaporation Methods 0.000 claims description 7
- 239000000110 cooling liquid Substances 0.000 claims description 6
- 230000008020 evaporation Effects 0.000 claims description 6
- 238000009833 condensation Methods 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims description 2
- 239000000243 solution Substances 0.000 description 24
- 238000000034 method Methods 0.000 description 10
- 239000010779 crude oil Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 239000003129 oil well Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 241000237983 Trochidae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002351 wastewater Substances 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/18—Hot-water central heating systems using heat pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/12—Heat pump
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/05—Cost reduction
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention discloses one kind to be based on the second kind absorption type mixing heat pump, and the heat pump includes evaporator, condenser, heat exchanger, compressor, absorber, heat exchanger, regenerator and cooler；Outside sewage is discharged after entering the tube side heat exchange of evaporator, and evaporator is connected with condenser, and the shell-side outlet of evaporator is connected with absorber；Absorber, heat exchanger form heat-exchanging loop after being connected with regenerator；Sewage flows through the regeneration that regenerator ensures lithium-bromide solution in heat exchanger outside another way, and regenerator is connected with condenser；Condenser, cooler and pump form cooling circuit, liquid organic circulation working medium enters absorber, absorber enters compressor after liquid organic circulation working medium is thermally formed into gaseous working medium, compressor heats after compressing it design temperature and pressure into heat exchanger to the heating water of outside, and becoming liquid organic circulation working medium after gaseous working medium heat exchange continues to participate in cycle heat exchange.Operating cost can be reduced more than 50% by the present invention, significantly shorten payoff period, have great economic benefit.
Description
Technical field
The present invention relates to the oil extraction-generated waste water technical field of waste heat utilization of petroleum industry, and in particular to one kind is inhaled based on the second class
Receipts formula mixes heat pump.
Background technology
At present, the mined water content in crude oil of oil field at home is very high (typically more than 90%), and crude oil is from ground
Under produce after be aggregated into the multi-purpose station in region by terminal on the way dewater treatment carried out to crude oil.Domestic diverse geographic location
Crude oil be not quite similar due to physical property, so handling process is also not exclusively the same.But main process is the methods of passing through sedimentation
Water-oil separating is realized, the moisture content of crude oil is reduced to less than 0.03%.
In oil water separation process, the sewage after separation still has certain heat (38~45 DEG C), after simple process
Discharge or be recycled into oil well after being aggregated into sewage treatment plant's processing, be if to the heat energy in sewage effectively utilize
One kind of heat energy is wasted.
At present, it is directly to use the direct temperature raising of compression heat pump using low grade heat energy method one kind, this method really may be used
To utilize the part of waste heat, but power consumption is very big, and because electricity is secondary energy sources, grade is higher, is used directly to lift potential temperature
Economy is very improper.Another method is to extract the heat in reinjected water, and industry is used for after being heated up by absorption heat pump
Production and civil heating, absorption heat pump although basic not consuming electric power, but because the limitation temperature rise of its technical principle is limited, it is impossible to
The technology is promoted on a large scale.
Absorption heat pump is divided into first-class absorption type heat pump and second-kind absorption-type heat pump again.First-class absorption type heat pump is again
Referred to as increase heating type heat pump, it is to reclaim low temperature exhaust heat heat by driving heat source of heat of high temperature, then output can in the form of middle potential temperature
With heat；Second-kind absorption-type heat pump is also known as temperature-increasing type heat pump, and it is the which part heat using medium temperature waste heat as driving heat source
Heat can be used with high temperature form output, remaining is discharged into environment in the form of more low temperature position.
The content of the invention
In view of this, the invention provides one kind to be based on the second kind absorption type mixing heat pump, is ensureing cost of investment raising
In the case of amplitude very little, operating cost is reduced more than 50%, significantly shortens payoff period, there is great economic benefit.Overcome
Prior art energy consumption is big, it is costly the shortcomings that, using the less energy can obtain more available heat energy.
One kind is based on the second kind absorption type mixing heat pump, and the heat pump includes evaporator, condenser, heat exchanger, compressor, suction
Receive device, heat exchanger, regenerator and cooler；
Outside sewage is discharged after entering the tube side heat exchange of evaporator, and the shell side inlet of evaporator is connected with condenser, dirty
The condensed water heating evaporation that water will enter in evaporator shell side from condenser, the shell-side outlet of evaporator are connected with absorber；Institute
State absorber, heat exchanger forms heat-exchanging loop after being connected with regenerator by lithium-bromide solution pipeline；Sewage outside another way
The regeneration that regenerator ensures lithium-bromide solution in heat exchanger is flowed through, regenerator is connected by water vapour pipeline with condenser；It is described
Condenser, cooler and pump form cooling circuit, and the cooling liquid after heat exchange enters cooler circulation after being pressurizeed by pump cold
But arrive design temperature and be recycled into condenser again；
Liquid organic circulation working medium enters absorber, after liquid organic circulation working medium is thermally formed gaseous working medium by absorber
Into compressor, compressor heats after compressing it design temperature and pressure into heat exchanger to the heating water of outside,
Be heated after heating water be admitted to heating grid heated, gaseous working medium heat exchange after become liquid organic circulation working medium after
It is continuous to participate in cycle heat exchange.
Further, there are two circulation lines arranged side by side between the absorber and heat exchanger, heat exchanger flow direction is inhaled
Receive and pump is installed on the pipeline in device direction；There are two circulation lines arranged side by side, heat exchanger flow direction between heat exchanger and regenerator
Choke valve is installed on the pipeline in regenerator direction.
Further, pump is connected on the pipeline between the evaporator and condenser, it is therefore an objective to by the condensation in condenser
Water is pumped into evaporator.
Beneficial effect：
1st, absorption heat pump is combined by the present invention with two kinds of technologies of compression heat pump, using absorption heat pump technology as base
Plinth, coordinate the compression heat pump auxiliary gain of heat, heat required potential temperature.In the case where ensureing cost of investment increase rate very little,
Operating cost is reduced more than 50%, significantly shortens payoff period, there is great economic benefit.
2nd, the present invention has good operating characteristics, very strong followability and self-balance ability, when external process parameter is (as given up
Temperature, pressure, hot water inlet's temperature and the flow of thermal source, circulating cooling water temperature etc.) when remaining unchanged, heat pump can enter steady quickly
Determine state, and run very steady.Once external process parameter changes, heat pump inner parameter (such as lithium-bromide solution it is dense
Degree, evaporating pressure, condensing pressure etc.) new equalization point will be automatically adjusted to rapidly and enter stable state, without operating personnel
Make any regulation.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, the invention provides one kind to be based on the second kind absorption type mixing heat pump, and the heat pump includes evaporation
Device, condenser, heat exchanger, compressor, absorber, heat exchanger, regenerator and cooler；
Outside sewage is discharged after entering the tube side heat exchange of evaporator, and the shell side inlet of evaporator is connected with condenser, steams
Pump is connected on pipeline between hair device and condenser, it is therefore an objective to which the condensed water in condenser is pumped into evaporator；Sewage will be from
The condensed water heating evaporation that condenser enters in evaporator shell side, the shell-side outlet of evaporator are connected with absorber；The absorption
Device, heat exchanger and regenerator form heat-exchanging loop after being connected by lithium-bromide solution pipeline；Between absorber and heat exchanger
There are two circulation lines arranged side by side, heat exchanger flows to and installs pump on the pipeline in absorber direction；Heat exchanger and regenerator it
Between have two circulation lines arranged side by side, heat exchanger flows to and installs choke valve on the pipeline in regenerator direction.
Sewage flows through the regeneration that regenerator ensures lithium-bromide solution in heat exchanger outside another way, and regenerator passes through water vapour
Pipeline is connected with condenser；The condenser, cooler and pump form cooling circuit, and the cooling liquid after heat exchange is by pump
After pressurization condenser again is recycled into cooler circulating cooling to design temperature；
Liquid organic circulation working medium enters absorber, after liquid organic circulation working medium is thermally formed gaseous working medium by absorber
Into compressor, compressor heats after compressing it design temperature and pressure into heat exchanger to the heating water of outside,
Be heated after heating water be admitted to heating grid heated, gaseous working medium heat exchange after become liquid organic circulation working medium after
It is continuous to participate in cycle heat exchange.
Operation principle：First, the lithium bromide weak solution 5 from solution heat exchanger enters regenerator, is made by choke valve
With pressure, which reduces, causes lithium bromide weak solution that partial gasification occurs, and vapor liquid equilibrium is rapidly reached at regenerator liquid distribution plate, and reach
Minimum temperature into regenerator；Subsequent lithium bromide weak solution absorbs the heat discharged in pipe outside the heat exchanger tube of regenerator
It is concentrated by evaporation, lithium-bromide solution concentration gradually rises, temperature rise；Lithium bromide concentrated solution 6 after concentration closely enters solution heat exchanger
Lithium bromide weak solution 4 with carrying out self-absorption/evaporator exchanges heat, and the lithium bromide concentrated solution 7 after heat exchange is pumped to absorption/evaporator；
Steam 8 caused by lithium bromide weak solution concentration process enters condenser after exporting in regenerator；Regenerator Bottomhole pressure is oil
38~45 DEG C of sewage 14 caused by field re-injection oil well, by being exchanged heat with lithium-bromide solution outside pipe, the outlet temperature of sewage 15 is 28
~35 DEG C.
From regenerator produce into condenser steam 8, by with cooling liquid in pipe 13 carry out heat exchange be cooled to it is cold
Condensate 9, the condensed water 10 after being pressurizeed by pump are heated again evaporation into evaporator；And the cooling liquid 11 after exchanging heat is entered
Enter pump pressurization, the cooling liquid 12 after pressurization is recycled into condenser into cooler circulating cooling to design temperature.
38~45 DEG C of oilfield sewage 1 enters evaporator tube side, and its heat is used for heating the condensed water 10 of shell side, after heat exchange
Sewage 2 go out evaporator temperature for 28~35 DEG C；Evaporator shell side is to come the condensed water 10 of condenser and following certainly for evaporator
Ring water mixed liquid body, after distribution grid cloth liquid, uniformly flowed downward along pipe outer wall falling liquid film, saturation is progressively reached by heat exchange
Shape simultaneously starts to evaporate, and produces steam 3 and is absorbed into absorber/evaporator, unevaporated water is back to evaporator shell side inlet
Place, the self-circulating water as evaporator continue next heat cycles.
After water vapour 3 caused by evaporator enters absorber/evaporator, full of the whole shell including above liquid distribution plate
Journey space；Lithium bromide concentrated solution 7 from solution heat exchanger, absorber/evaporator distribution grid is admitted to, now solution is in not
Saturation state, reach distribution grid above and landing very short time in, absorb a large amount of water vapours and reach saturation, absorber/
The top shell side of evaporator forms an obvious temperature rise area, turns into the highest temperature zone of whole absorption cycle system, solution gas
Liquid two-phase is in dynamic equilibrium all the time during falling liquid film, is conducted heat by mass transfer enhancement, and solution temperature declines, and concentration reduces, most
Formation lithium bromide weak solution 4 enters back into regenerator after being exchanged heat into solution heat exchanger and regenerated afterwards；It is from heat exchanger in pipe
~50 DEG C of liquid organic circulation working medium 18, by absorber/evaporator with managing outer high temperature lithium-bromide solution countercurrent flow, obtain
The organic circulation working substance steam 16 of design code temperature rise~55 DEG C is obtained, design temperature and pressure are compressed to subsequently into compressor
Power.
About 55 DEG C of organic circulation working substance steam 16 flows into compressor from absorber/evaporator, is done by using compressor
Organic circulation working substance steam 17 is reached about 70 DEG C by work, subsequently into heat exchanger；About 70 DEG C of the organic circulation work in heat exchanger
Matter steam is exchanged heat with about 50 DEG C of heating water 19, heating water is heated into about 65 DEG C, heated heating water 20, which enters, to be supplied
Hot water pipe net is heated, and becomes about 50 DEG C of liquid organic circulation working medium after about 70 DEG C of the heat exchange of organic circulation working substance steam 17
18 continue to participate in cycle heat exchange.
In summary, presently preferred embodiments of the present invention is these are only, is not intended to limit the scope of the present invention.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., it should be included in the present invention's
Within protection domain.
Claims (3)
1. one kind be based on the second kind absorption type mixing heat pump, it is characterised in that the heat pump including evaporator, condenser, heat exchanger,
Compressor, absorber, heat exchanger, regenerator and cooler；
Outside sewage is discharged after entering the tube side heat exchange of evaporator, and the shell side inlet of evaporator is connected with condenser, and sewage will
The condensed water heating evaporation entered from condenser in evaporator shell side, the shell-side outlet of evaporator are connected with absorber；The suction
Receive device, heat exchanger forms heat-exchanging loop after being connected with regenerator by lithium-bromide solution pipeline；Sewage flows through outside another way
Regenerator ensures the regeneration of lithium-bromide solution in heat exchanger, and regenerator is connected by water vapour pipeline with condenser；The condensation
Device, cooler and pump form cooling circuit, and the cooling liquid after heat exchange arrives after being pressurizeed by pump into cooler circulating cooling
Design temperature circulation is again introduced into condenser；
Liquid organic circulation working medium enters absorber, and absorber enters after liquid organic circulation working medium is thermally formed into gaseous working medium
Compressor, compressor heat after compressing it design temperature and pressure into heat exchanger to the heating water of outside, quilt
Heating water after heating is admitted to heating grid and heated, and becomes the continuation of liquid organic circulation working medium after gaseous working medium heat exchange
Participate in cycle heat exchange.
2. one kind as claimed in claim 1 is based on the second kind absorption type mixing heat pump, it is characterised in that the absorber and heat
There are two circulation lines arranged side by side between exchanger, heat exchanger flows to and installs pump on the pipeline in absorber direction；Heat exchanger
There are two circulation lines arranged side by side between regenerator, heat exchanger flows to and installs choke valve on the pipeline in regenerator direction.
3. one kind as claimed in claim 2 is based on the second kind absorption type mixing heat pump, it is characterised in that the evaporator with it is cold
Pump is connected on pipeline between condenser, it is therefore an objective to which the condensed water in condenser is pumped into evaporator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711085622.9A CN107869857A (en) | 2017-11-07 | 2017-11-07 | One kind is based on the second kind absorption type mixing heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711085622.9A CN107869857A (en) | 2017-11-07 | 2017-11-07 | One kind is based on the second kind absorption type mixing heat pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107869857A true CN107869857A (en) | 2018-04-03 |
Family
ID=61753726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711085622.9A Pending CN107869857A (en) | 2017-11-07 | 2017-11-07 | One kind is based on the second kind absorption type mixing heat pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107869857A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108844253A (en) * | 2018-09-06 | 2018-11-20 | 华北电力大学 | A kind of superhigh temperature non-azeotropic working medium heat pump unit |
| CN110057128A (en) * | 2019-05-29 | 2019-07-26 | 华北电力大学 | A kind of coupling heat pump heat exchanger |
| CN110057127A (en) * | 2019-05-29 | 2019-07-26 | 华北电力大学 | A kind of coupling heat pump heat exchanger |
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| CN1195398A (en) * | 1996-04-25 | 1998-10-07 | 中国电力株式会社 | Compression absorption hybrid heat pump |
| CN2474966Y (en) * | 2000-07-03 | 2002-01-30 | 潘卫东 | An absorption refrigerator |
| CN1536295A (en) * | 2003-04-11 | 2004-10-13 | 清华大学 | A dual heat pump combined heat and power system powered by an internal combustion engine |
| CN101067526A (en) * | 2006-09-28 | 2007-11-07 | 李华玉 | Heat pump phase transformation heat supply and application technique thereof |
| CN101464067A (en) * | 2008-11-26 | 2009-06-24 | 王宁和 | Energy-saving and compact absorption type refrigerating machine |
| CN101832681A (en) * | 2009-03-13 | 2010-09-15 | 上海青浦工业园区热电有限公司 | Lithium bromide refrigerating machine capable of recycling heat energy by utilizing heat pump |
| CN102997482A (en) * | 2012-12-19 | 2013-03-27 | 双良节能系统股份有限公司 | Direct-fired lithium bromide absorption cold-hot water unit for recovering flue gas waste heat under heating working condition |
| CN105466016A (en) * | 2015-12-25 | 2016-04-06 | 力聚热力设备科技有限公司 | Vacuum boiler with built-in absorption type heat pump |
| CN106507647A (en) * | 2016-12-23 | 2017-03-15 | 广东申菱环境系统股份有限公司 | The cooling system that a kind of solar energy absorption type refrigeration is closed with liquid cold junction |
| CN207585140U (en) * | 2017-11-07 | 2018-07-06 | 北京拓首能源科技股份有限公司 | One kind is based on the second kind absorption type mixing heat pump |
| CN108518890A (en) * | 2018-05-11 | 2018-09-11 | 宋世海 | A kind of direct fired absorption air source heat pump circulating heating system |
-
2017
- 2017-11-07 CN CN201711085622.9A patent/CN107869857A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1195398A (en) * | 1996-04-25 | 1998-10-07 | 中国电力株式会社 | Compression absorption hybrid heat pump |
| CN2474966Y (en) * | 2000-07-03 | 2002-01-30 | 潘卫东 | An absorption refrigerator |
| CN1536295A (en) * | 2003-04-11 | 2004-10-13 | 清华大学 | A dual heat pump combined heat and power system powered by an internal combustion engine |
| CN101067526A (en) * | 2006-09-28 | 2007-11-07 | 李华玉 | Heat pump phase transformation heat supply and application technique thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108844253A (en) * | 2018-09-06 | 2018-11-20 | 华北电力大学 | A kind of superhigh temperature non-azeotropic working medium heat pump unit |
| CN108844253B (en) * | 2018-09-06 | 2023-11-24 | 华北电力大学 | An ultra-high temperature non-azeotropic working fluid heat pump unit |
| CN110057128A (en) * | 2019-05-29 | 2019-07-26 | 华北电力大学 | A kind of coupling heat pump heat exchanger |
| CN110057127A (en) * | 2019-05-29 | 2019-07-26 | 华北电力大学 | A kind of coupling heat pump heat exchanger |
| CN110057128B (en) * | 2019-05-29 | 2023-12-19 | 北京华电东晟科技有限公司 | Coupling heat pump heat exchanger |
| CN110057127B (en) * | 2019-05-29 | 2023-12-19 | 北京华电东晟科技有限公司 | Coupling heat pump heat exchanger |
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Application publication date: 20180403 |