CN107388657B - One kind compressing the regenerated Frostless air-source heat pump system of solution based on low pressure - Google Patents
One kind compressing the regenerated Frostless air-source heat pump system of solution based on low pressure Download PDFInfo
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- CN107388657B CN107388657B CN201710427339.3A CN201710427339A CN107388657B CN 107388657 B CN107388657 B CN 107388657B CN 201710427339 A CN201710427339 A CN 201710427339A CN 107388657 B CN107388657 B CN 107388657B
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- solution
- solenoid valve
- output
- input terminal
- air
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- 239000003570 air Substances 0.000 claims abstract description 48
- 230000008929 regeneration Effects 0.000 claims abstract description 24
- 238000007906 compression Methods 0.000 claims abstract description 22
- 239000003507 refrigerants Substances 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 239000011901 water Substances 0.000 claims description 17
- 238000007791 dehumidification Methods 0.000 claims description 7
- 239000007788 liquids Substances 0.000 claims description 6
- AMXOYNBUYSYVKV-UHFFFAOYSA-M Lithium bromide Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims description 3
- 230000000875 corresponding Effects 0.000 claims description 3
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- 238000000034 methods Methods 0.000 description 14
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- 280000987138 Zhejiang University companies 0.000 description 1
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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[C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000001808 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reactions Methods 0.000 description 1
- 230000004059 degradation Effects 0.000 description 1
- 238000006731 degradation reactions Methods 0.000 description 1
- 238000010586 diagrams Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
Classifications
-
- 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
- F24D15/00—Other domestic- or space-heating systems
- F24D15/04—Other domestic- or space-heating systems using heat pumps
-
- 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
- F25B47/02—Defrosting cycles
-
- F25B41/31—
-
- 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
- F24D2200/123—Compression type heat pumps
-
- 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
- F25B2347/00—Details for preventing or removing deposits or corrosion
- F25B2347/02—Details of defrosting cycles
-
- 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
-
- 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]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
Description
Technical field
The present invention relates to one kind to compress the regenerated Frostless air-source heat pump system of solution based on low pressure, belongs to refrigeration air-conditioner system System technical field.
Background technique
Currently, air source heat pump as it is a kind of take into account refrigeration and heat dual function equipment, with its energy utilization rate compared with High, energy-saving and environmental protection and flexible and convenient advantage are used widely in Yangtze river basin, while in northern country area It is widelyd popularize in " coal changes electricity " engineering, become the vast southern area heating of solution and alleviates the important of northern haze weather One of approach.But there is the frosting of outdoor heat exchanger surface in the operation of air source heat pump winter heating, it is larger in relative humidity The Yangtze river basin and areas to the south be particularly acute.The frosting of heat pump heat exchanger can seriously affect the normal work of heat pump unit, make Equipment performance decline or even cisco unity malfunction.
Presently the most common air source heat pump defrosting method be reverse cycle defrosting, this method have the disadvantage in that first is that Defrosting process is needed from indoor heat absorption, causes indoor thermal comfort degradation during this；Second is that reverse circulation needs four-way valve Frequently commutation switches refrigeration system height laminate section, reduces the reliability and service life of system.In addition, this method is held It is also easy to produce and accidentally defrosts, therefore defrosting control method also needs further to study.
In recent years, some scholars constantly proposed Frostless air-source heat pump, and this method is based on solution humidifying, is sprayed by solution Leaching reduces the humidity of outdoor evaporator inlet air, realizes the frostless operation of heat pump, while improving heat pump performance, more improves The thermal comfort of indoor environment.Typically there is a kind of old bright frost-free type air source heat pump system proposed of Zhejiang University (specially Sharp application number: CN200910098008.5), the device is using anti-freezing solution as the outer Cryogenic air heat of heat-carrying agent absorption chamber Amount, then the heat of solution is transmitted to outdoor evaporator, so as to avoid the frosting of air source heat pump, but the system is not fine Solution solution regeneration issues, consume energy it is higher.However, dehumidification solution while spray drying outside air concentration not yet Disconnected decline, wet-out property also constantly decline therewith, efficient solution regeneration method is the key that the system can be asked with continuous operation Topic.
Currently, regeneration method the most conventional is heated solution regeneration, but this method need to consume amount of heat, while Need to improve air themperature under normal pressure to promote the water capacity in air, the humid air after hot and humid area occurs with solution contains greatly The reactivation heat of amount, and these heats are usually discharged or partially recycled, cause a large amount of thermal loss, so that system effectiveness Extremely decline.Therefore, it using suitable regeneration method and coupling heat pump system, completes to realize solution while heat pump frostless operation Highly efficient regeneration, improving entire heat pump system winter operation efficiency seems particularly significant.
Summary of the invention
Goal of the invention: existing serious frosting when to solve the problems, such as air source heat pump winter operation in the prior art, and The frostless higher problem of heat pump system regeneration energy consumption of conventional solution humidifying, the present invention provide a kind of based on low pressure compression solution Regenerated Frostless air-source heat pump system and regulation method, adjust regenerator pressure and compressed steam using vapour compression machine, One side can make the rapid evaporation under low pressure of the water vapour in actified solution, pass through temperature and pressure that compressor promotes vapor Power, and condensation heat dehumidification regeneration system solution is utilized, it realizes whole recycling of condenser heat, greatly improves frostless heat pump system Efficiency.
Technical solution: to achieve the above object, the technical solution adopted by the present invention are as follows:
One kind compressing the regenerated Frostless air-source heat pump system of solution, including refrigerant circuit, solution loop based on low pressure And both vapor compression condensing circuit:
Refrigerant circuit includes compressor one, aerial condenser, solution condenser, electric expansion valve, solution evaporator, sky Gas evaporator, solenoid valve one, solenoid valve two, solenoid valve three, solenoid valve four and its relevant connection pipeline, the solution condenser and Solution evaporator while the still building block of solution loop；
In refrigerant circuit, the input terminal of the output end of compressor one and aerial condenser is connected, aerial condenser it is defeated Outlet is connect with the input terminal of solenoid valve one and solenoid valve two simultaneously, the output end of solenoid valve one and the input terminal of solution condenser Connection, the output end two of solution condenser are connect with the input terminal of electric expansion valve, the output end and electronic expansion of solenoid valve two The input terminal of valve connects, and the output end of electric expansion valve is connect with the input terminal one of solution evaporator, the output of solution evaporator End one is connect with the input terminal of air evaporator and solenoid valve three respectively, the input of the output end and solenoid valve four of air evaporator End connection, solenoid valve three and the output end of solenoid valve four are connected with the input terminal of compressor one simultaneously；
Solution loop includes dehumidifier, regenerator, solution condenser, solution heat exchanger, solution evaporator, solution circulation Pump one, solution circulation pump two, solenoid valve five, solenoid valve six, solenoid valve seven, solenoid valve eight, check valve one, check valve two, fan And respective line, the regenerator and solution heat exchanger are also the building block of both vapor compression condensing circuit simultaneously；
In solution loop, the output end one of dehumidifier is successively by solenoid valve five and solution circulation pump one and solution evaporator Input terminal two connect, the output end two of solution evaporator connect with the input terminal of dehumidifier, and the output end two of dehumidifier is through electricity Magnet valve eight and check valve one are connect with the input terminal one of solution heat exchanger, and the output end of solution heat exchanger is recycled once solution Pump two is connect with the input terminal two of solution condenser, and the output end one of solution condenser is connect with regenerator entrance, regenerator Output end is connect once solenoid valve seven with two entrance of solution circulation pump, and the output end two of regenerator is through solenoid valve six and check valve two It is connect with the input terminal two of solution heat exchanger, the output end two of solution heat exchanger and the input terminal of solution circulation pump one connect It connects；
Both vapor compression condensing circuit includes regenerator, compressor two, water receiver, solenoid valve nine, solenoid valve ten, check valve three And corresponding connecting line, the output end of regenerator are connect with the input terminal of compressor two, the output end of compressor two is through regenerating Device is connect with the input terminal of solenoid valve nine, and the output end of solenoid valve nine and the input terminal of water receiver connect, the output end of water receiver It is connect through solenoid valve ten and check valve three with the output end of condensed water；
In apparatus of the present invention, dehumidifier uses distributary pattern, positioned at the air intake passage of air evaporator, dry outside air Enter air evaporator afterwards, realizes frostless operation.
In apparatus of the present invention, the dehumidification solution that dehumidifier uses is lithium-bromide solution.
In apparatus of the present invention, the vapor in regenerator in solution is absorbed and is compressed by compressor two under low pressure, is become The vapor of high temperature and pressure flows into regenerator and releases condensation heat heating actified solution.
In apparatus of the present invention, the concentration of solution is adjusted jointly by pressure in regenerator and two pressure at expulsion of compressor after regeneration It determines.
In apparatus of the present invention, compressor two is variable-flow compressor, changes using compressor flowrate and adjusts solution regeneration Speed.
In apparatus of the present invention, the heat supplement of regenerator is provided by solution condenser, and solution circulation pump two is variable frequency pump, is led to It crosses and changes the adjustable solution condenser of liquid inventory to the heating amount of solution.
The utility model has the advantages that compared with prior art, the present invention having the advantage that
It is proposed by the present invention that the regenerated Frostless air-source heat pump system of solution is compressed based on low pressure, entered using solution humidifying The air of evaporator guarantees that heat pump system realizes frostless operation；Solution reclaiming process is greatly improved again using regeneration low pressure regeneration Come into force rate, while the vapor being evaporated is become high temperature and high pressure steam using compressor and carries out condensation release in a regenerator Condenser heat actified solution, completes heat recovery, ensure that most heats of heat pump system for indoor heating and is The efficient operation of system.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
In figure: 1 compressor one, 2 aerial condensers, 3 solenoid valves one, 4 solenoid valves two, 5 solution condensers, 6 economize on electricity are swollen Swollen valve, 7 solution evaporators, 8 solenoid valves three, 9 solenoid valves four, 10 air evaporators, 11 dehumidifiers, 12 solenoid valves five, 13 solution Circulating pump one, 14 regenerators, 15 compressors two, 16 solution heat exchangers, 17 solenoid valves six, 18 solenoid valves seven, 19 solution circulation Pump two, 20 solenoid valves nine, 21 solenoid valves eight, 22 water receivers, 23 solenoid valves ten, 24 fans, 25 check valves one, 26 check valves two, 27 check valves three.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the present invention is furture elucidated, it should be understood that these examples are merely to illustrate this It invents rather than limits the scope of the invention, after the present invention has been read, those skilled in the art are to of the invention various The modification of equivalent form falls within the application range as defined in the appended claims.
It is disclosed referring to Fig. 1 a kind of based on the low pressure compression regenerated Frostless air-source heat pump system of solution, including refrigerant Circuit, solution loop and both vapor compression condensing circuit.
Refrigerant circuit includes compressor 1, aerial condenser 2, solution condenser 5, electric expansion valve 6, solution evaporation Device 7, air evaporator 10, solenoid valve 1, solenoid valve 24, solenoid valve 38, solenoid valve 49 and its relevant connection pipeline, it is described Solution condenser 5 and solution evaporator 7 while the still building block of solution loop；
In refrigerant circuit, the output end of compressor 1 is connect with the input terminal of aerial condenser 2, aerial condenser 2 Output end is connect with the input terminal of solenoid valve 1 and solenoid valve 24 simultaneously, output end and the solution condenser 5 of solenoid valve 1 Input terminal one connects, and the output end two of solution condenser 5, the output end of solenoid valve 24 connect with the input terminal of electric expansion valve 6 Connect, the output end of electric expansion valve 6 is connect with the input terminal one of solution evaporator 7, the output end one of solution evaporator 7 respectively with Air evaporator 10 is connected with the input terminal of solenoid valve 38, and the output end of air evaporator 10 and the input terminal of solenoid valve 49 connect It connects, solenoid valve 38 is connected with the input terminal of compressor 1 simultaneously with the output end of solenoid valve 49；
Solution loop include dehumidifier 11, regenerator 14, solution condenser 5, solution heat exchanger 16, solution evaporator 7, Solution circulation pump 1, solution circulation pump 2 19, solenoid valve 5 12, solenoid valve 6 17, solenoid valve 7 18, solenoid valve 8 21, list To valve 1, check valve 2 26, fan 24 and respective line, the regenerator 14 and solution heat exchanger 16 are also to steam simultaneously The building block of vapour pressure contracting condensing circuit；
In solution loop, one 11b of output end of dehumidifier 11 successively pass through solenoid valve 5 12 and solution circulation pump 1 with The input terminal two of solution evaporator 7 connects, and the output end two of solution evaporator 7 is connect with the input terminal of dehumidifier 11, dehumidifier 11 two 11a of output end is connect through solenoid valve 8 21 and check valve 1 with one 16a of input terminal of solution heat exchanger 16, solution One 16c of output end of heat exchanger 16 is connect through solution circulation pump 2 19 with the input terminal two of solution condenser 5, solution condenser 5 output end one is connect with 14 entrance of regenerator, and one 14a of output end of regenerator 14 is through solenoid valve 7 18 and solution circulation pump two The connection of 19 entrances, input of two 14b of output end through solenoid valve 6 17 and check valve 2 26 and solution heat exchanger 16 of regenerator Two 16b connections are held, two 16d of output end of solution heat exchanger 16 is connect with the input terminal of solution circulation pump 1；
Both vapor compression condensing circuit includes regenerator 14, compressor 2 15, water receiver 22, solenoid valve 9 20, solenoid valve ten 23, the output end 14c of check valve 3 27 and corresponding connecting line, the regenerator is connect with the input terminal of compressor 2 15, The output end of compressor 2 15 is connect through regenerator 14 with the input terminal of solenoid valve 9 20, the output end and water storage of solenoid valve 9 20 The input terminal of device 22 connects, and the output end of water receiver 22 connects through the output end of solenoid valve 10 and check valve 3 27 and condensed water It connects；
The dehumidifier 11 is distributary pattern, positioned at the air intake passage of air evaporator 10.
The dehumidification solution of the dehumidifier 11 is lithium-bromide solution.
In the present invention, the vapor of low pressure regenerator 14 is absorbed and is compressed, the vapor of high temperature and pressure by compressor 2 15 Condensation heat heating actified solution is released in regenerator 14.
In the present invention, the concentration of solution is determined by 14 pressure of regenerator and the adjusting of 2 15 pressure at expulsion of compressor after regeneration.
The compressor 2 15 is variable-flow compressor, changes using compressor flowrate and adjusts solution reproduction speed.
In the present invention, the heat supplement of regenerator 14 is provided by solution condenser 5, and solution circulation pump 2 19 is variable frequency pump, By changing the adjustable solution condenser 5 of liquid inventory to the heating amount of solution.
A kind of regulation method based on the low pressure compression regenerated Frostless air-source heat pump system of solution:
When Frostless air-source heat pump system heat supply in winter, operation is divided into Three models, (1) heat supply mode: returning in refrigerant Lu Zhong, solenoid valve 24, solenoid valve 9 are opened, and solenoid valve 1 and solenoid valve 8 are closed, at this point, refrigerant working medium is from compressor 1 Outlet enters aerial condenser 2, and net quantity of heat release is used for indoor heating in aerial condenser 2, is condensed into after liquid, Enter electric expansion valve 6 through solenoid valve 24 and carry out throttling process, the refrigerant working medium after throttling enters solution evaporator 7 and sky Gas evaporator 10 completes evaporation process and absorbs heat from solution and air, and the low-temp low-pressure working substance steam of generation passes through electromagnetism Valve 49 enters compressor second compression again, so recycles；In solution loop, solenoid valve 5 12, blower 24 and solution circulation pump 1 In the open state, remaining part is in closed state.At this point, the solution of dehumidifier 11 is followed through solenoid valve 5 12 by solution Ring pump 1 is sent to solution evaporator 7 and exchanges with refrigerant progress heat, partial heat is passed to refrigerant working medium, later Spray process is carried out into dehumidifier 11, hot and humid area is carried out with the outside air that blower 24 is sent, absorbs the moisture in air, And circulation completes dehumidification process again, until concentration is reduced to and is unable to complete moisture removal.Air after drying enters air evaporation It is outdoor to become Cryogenic air discharge for device 10 after exchanging heat with evaporator 10.
(2) transition mode: this process, solution concentration reduction cannot achieve frostless operation in dehumidifier 11, solenoid valve 6 17, Solenoid valve 8 21, solution circulation pump 1 and solution circulation pump 2 19 are opened, and solenoid valve 5 12 and solenoid valve 7 18 are in and close State.Weak solution in dehumidifier 11 enters solution heat exchanger 16 through solenoid valve 8 21 and check valve 1 and goes out with regenerator 14 The concentrated solution come carries out heat exchange, and being sent into solution condenser 5 by solution circulation pump 2 19 later, further absorption heat is laggard Enter regenerator 14. on the other hand, the concentrated solution stored in regenerator 14 enters solution heat through solenoid valve 6 17 and check valve 2 26 Exchanger 16 carries out heat with weak solution and exchanges, and lag is sent into solution evaporator 7 by solution circulation pump 1 and is further cooled down Enter dehumidifier 11 afterwards.
(3) regeneration mode: in refrigerant circuit, solenoid valve 1, solenoid valve 9 are opened, and solenoid valve 24 and solenoid valve 8 close It closes, at this point, refrigerant working medium enters aerial condenser 2 from the outlet of compressor 1, big portion's heat is discharged in aerial condenser 2 In be used for indoor heating, by solenoid valve 1 enter solution condenser 5 heat actified solution after, into electric expansion valve 6 into Row throttling process, the refrigerant working medium after throttling enter solution evaporator 7 and air evaporator 10, complete evaporation process from solution With absorb heat in air, the low-temp low-pressure working substance steam of generation enters compressor second compression again by solenoid valve 49, so follows Ring；In solution loop, solenoid valve 5 12, solenoid valve 7 18, blower 24 and solution circulation pump 1, solution circulation pump 2 19 and Compressor 2 15 is in the open state, and solenoid valve 6 17, solenoid valve 8 21 are in closed state.At this point, dehumidifier 11 is molten Liquid is sent to solution evaporator 7 by solution circulation pump 1 and exchanges with refrigerant progress heat through solenoid valve 5 12, will part heat Amount passes to refrigerant working medium, enters dehumidifier 11 later and carries out spray process, carries out heat with the outside air that blower 24 is sent Wet exchange absorbs the moisture in air, and circulation completes dehumidification process again, until concentration is reduced to and is unable to complete moisture removal. Air after drying enters air evaporator 10, and it is outdoor to become Cryogenic air discharge after exchanging heat with evaporator 10.In regenerator 14 The vapor of solution enters the superheated steam that compressor 2 15 becomes high temperature and pressure after compression, and then entering regenerator 14 will be hot Amount is released to after low-temp recovery solution becomes liquid water, and water receiver 22 is entered after solenoid valve 9 20.
In heat supply mode, solution concentration carries out air dewetting enough in dehumidifier, and regenerative system is not necessarily to work, all cold Solidifying heat guarantees system high efficiency operation for heating.
In transition mode, it is substantially carried out the heat exchange of concentrated solution and weak solution, heat pump system does not heat at this time, but by It is shorter in the time, have no effect on indoor thermal comfort.
In regeneration mode, most of origin of heat needed for solution regeneration generates cold in high-temperature high-pressure steam condensation Solidifying heat, small part additional heat carry out the solution condensation heat of source heat pump system offer, therefore, in the process, still most of heat It pumps heat and is used for indoor heating, ensure that frostless heat pump system keeps efficient operation in regeneration mode.
It is proposed by the present invention that the regenerated Frostless air-source heat pump system of solution is compressed based on low pressure, entered using solution humidifying The air of evaporator guarantees that heat pump system realizes frostless operation；Solution reclaiming process is greatly improved again using regeneration low pressure regeneration Come into force rate, while the vapor being evaporated is become high temperature and high pressure steam using compressor and carries out condensation release in a regenerator Condenser heat actified solution, completes heat recovery, ensure that most heats of heat pump system for indoor heating and is The efficient operation of system.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered It is considered as protection scope of the present invention.
Claims (6)
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| CN107388657B (en) * | 2017-05-19 | 2019-09-10 | 东南大学 | One kind compressing the regenerated Frostless air-source heat pump system of solution based on low pressure |
| CN109186119B (en) * | 2018-08-27 | 2020-12-11 | 浙江理工大学 | Frost-free air source heat pump system device and method for membrane distillation regeneration |
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