CN101963412B - Solar energy and electric energy combined heat pump system and cooling and heating method - Google Patents
Solar energy and electric energy combined heat pump system and cooling and heating method Download PDFInfo
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- CN101963412B CN101963412B CN201010510300A CN201010510300A CN101963412B CN 101963412 B CN101963412 B CN 101963412B CN 201010510300 A CN201010510300 A CN 201010510300A CN 201010510300 A CN201010510300 A CN 201010510300A CN 101963412 B CN101963412 B CN 101963412B
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Abstract
The invention discloses a solar energy and electric energy combined heat pump system and a cooling and heating method. The heat pump system comprises a solar energy absorption heat pump unit, an intermediate work medium circulating device and a compression heat pump unit, wherein a solar drive absorption heat pump drives the absorption heat pump unit to prepare a lower-temperature intermediate work medium or higher-temperature intermediate work medium; the intermediate work medium bears partial/all cold energy/heat energy required by a user through first heat mass exchange equipment, and enters an intermediate heat exchanger of the compression heat pump unit for heat exchange; and the cold energy/heat energy contained in the intermediate work medium is recycled once again through the heat pump unit so as to save the electric consumption of the compressor of the compression heat pump unit. The system realizes high-efficiency utilization of a low-level renewable energy source solar energy, and has the advantages of stable and reliable operation, efficient energy utilization, good energy-saving effect and wild application prospect.
Description
Technical field
The present invention relates to technical field of heat pumps, relate in particular to absorption heat pump and compression heat pump.
Background technology
The Driven by Solar Energy absorption heat pump is driving force with solar energy, is absorbent with lithium bromide water solution or ammonia spirit, is cold-producing medium with water, ammonia, and energy-conserving and environment-protective are one of better refrigeration modes that replace electrically driven (operated) compression heat pump.Yet the Driven by Solar Energy absorption heat pump exists occurrence temperature to have relatively high expectations, need that assistant heating, unit efficiency are low, intensity of sunshine changes shortcomings such as presenting discontinuous operation, limits it and applies.
Electric energy drive compression formula heat pump has advantages such as the user's of satisfying hot-cool demand, continous-stable operation, yet the compression heat pump consumption that electric energy drives is high-grade electric energy, does not have the energy-saving and emission-reduction advantage.In addition, a large amount of uses of the compression heat pump of electric energy driving also cause " electric power peak valley " problem in summer in winter easily.
Summary of the invention
The solar energy and the electric energy associated working combined heat pump system that the purpose of this invention is to provide a kind of low power consumption provide the refrigerating and heating method that adopts this system to realize simultaneously.
For realizing above-mentioned purpose; System of the present invention adopts following technical scheme: a kind of solar energy and electric energy associated working combined heat pump system; Comprise being used for and indoor heat-mass exchange equipment of carrying out heat exchange, also comprise solar absorption heat pump unit, middle working media EGR and compression heat pump unit; The solar absorption heat pump unit comprises generator, condenser, evaporimeter and absorber; Said generator has solution inlet port, taphole and steam (vapor) outlet; Be provided with the spiral heater that is used for the heating of wherein working medium solution in the generator; Be connected with the low grade heat energy heater between the import and export of spiral heater; Said absorber has refrigerant inlet, absorber solution inlet port and absorber taphole; Be equipped with the cooling device that is used for the fluid temperature reduction in it in said condenser and the absorber; Said evaporimeter have import, outlet and in establish be serially connected with said in the middle of heat exchange coil on the working media EGR; The steam (vapor) outlet of said generator is serially connected with condenser, first throttle parts, first check valve successively through pipeline, and the taphole of generator is through the high temperature side passage of pipeline access solution heat exchanger, and the downstream pipeline of the high temperature side channel outlet of solution heat exchanger is divided into two-way; Lead up to and link to each other with the solution inlet port of absorber through first control valve; The forward outlet of another road second control valve and said first check valve converges and links to each other evaporimeter 5 with evaporator) outlet link to each other with the refrigerant inlet of absorber, the absorber taphole of absorber is connected in series the solution inlet port of access generator behind the low temperature side passage of solution pump, solution heat exchanger successively through pipeline; Described heat-mass exchange equipment is first heat-mass exchange equipment and second heat-mass exchange equipment that is connected the compression heat pump unit of working media EGR in the middle of connecting; Be provided with in-between Intermediate Heat Exchanger between working media EGR and the compression heat pump unit in the middle of said, comprise the middle working media passage and the refrigeration working medium passage that inserts the compression heat pump unit of the middle working media EGR of access that can carry out heat exchange each other in the said Intermediate Heat Exchanger; The working media EGR comprises circulating pump that the mobile forward through pipeline longshore current body is connected in series successively, is located at heat exchange coil in the said evaporimeter, is located at the middle working media passage in said first heat-mass exchange equipment, the middle working media passage of Intermediate Heat Exchanger in the middle of said; Said compression heat pump unit comprises the refrigeration working medium passage of compressor, four-way change-over valve, outdoor heat exchanger, Intermediate Heat Exchanger, the refrigeration working medium passage of second heat-mass exchange equipment; Said exhaust outlet of compressor links to each other with the four-way change-over valve inlet; Four-way change-over valve is totally three outlets; Link to each other with a port of the refrigeration working medium passage of compressor air suction mouth, second heat-mass exchange equipment, a port of outdoor heat exchanger respectively, another port of refrigeration working medium passage of the refrigeration working medium passage of another port of outdoor heat exchanger through pipeline and Intermediate Heat Exchanger, second throttle part, second heat-mass exchange equipment is connected successively.
In said condenser and the absorber cooling device be provided with respectively in said condenser and the absorber by cooling tower or river, underground water the cooling coil of cold is provided.
Described low grade heat energy heater is heat cycles pump, solar thermal collector, the auxiliary heater that the port of export from spiral heater is connected in series through pipeline to entrance point successively.
It is lithium bromide water solution or ammonia spirit that said solar absorption heat pump unit adopts working medium solution; Working media was water, saline solution or ethylene glycol solution in the middle of the working media EGR adopted in the middle of said, and said compression heat pump unit refrigeration working medium is HFC class or HC class cold-producing medium.
Said first heat-mass exchange equipment is radiant panel, air cooling fin pipe heat exchanger or spray chamber, and said second heat-mass exchange equipment is water-cooled heat exchanger or air-cooled heat exchanger.
Be serially connected with the refrigerant liquid storage tank between said condenser and the first throttle parts; Be serially connected with the solution storage tank on the downstream pipeline of the high temperature side channel outlet of said solution heat exchanger, the described pipeline that is divided into two-way is that the exit from said solution storage tank is separated.
Method of the present invention adopts following technical scheme: but solar absorption heat pump unit and the both associated working of compression heat pump unit also can work independently; When solar absorption heat pump unit and the work of compression heat pump unit associations; Utilize Driven by Solar Energy absorption heat pump unit to produce middle working media of lower temperature or the middle working media of higher temperature; Middle working media is born the required part cold energy/heat energy of user through first heat-mass exchange equipment earlier; Get into the first heat exchanger heat exchange of compression heat pump unit again, cold energy/heat energy that working media is contained in the middle of recycling once more through the source pump unit is supplied with the user; When the solar absorption heat pump unit works alone, utilize Driven by Solar Energy absorption heat pump unit to produce middle working media of lower temperature or the middle working media of higher temperature, bear the required whole cold energy/heat energy of user through first heat-mass exchange equipment; When the compression heat pump unit worked alone, the compression heat pump unit provided the user required whole cold energy/heat energy through second heat-mass exchange equipment.
Described solar energy and electric energy associated working combined heat pump system are with refrigeration mode or heating mode work; Be serially connected with the refrigerant liquid storage tank between said condenser and the first throttle parts; Be serially connected with the solution storage tank on the downstream pipeline of the high temperature side channel outlet of said solution heat exchanger, the described pipeline that is divided into two-way is that the exit from said solution storage tank is separated; When work with refrigeration mode in Driven by Solar Energy absorption heat pump unit; First control valve is opened; Second control valve is closed; During refrigeration mode work, the pyrosol that utilizes solar energy indirect generator to be produced gets into the solution storage jar after getting into solution heat exchanger and the heat exchange of low temperature side solution, and a part of solution is stored in the solution storage tank; Another part solution gets into that absorber absorbs the refrigerant vapour of flash-pot and the low solution of the temperature that is cooled, and flows into generator again after sending into solution heat exchanger by solution pump again; In the generator working medium solution be heated the refrigerant vapour that produces become liquid to get into the refrigerant liquid storage tank again through condenser condenses; Part liquid refrigerant is stored in the refrigerant liquid storage tank; The working media heat exchange was vaporized into refrigerant vapour in the middle of another part became in cryogenic liquid cold-producing medium entering evaporimeter and the heat exchange coil after the first throttle parts are by the throttling step-down; The working media temperature is reduced to below 20 ℃ in the middle of in the heat exchange coil; When first heat-mass exchange equipment undertakes the whole thing the required cold of user side; The compression heat pump unit quits work; Only Driven by Solar Energy absorption heat pump and middle working media EGR work, the Driven by Solar Energy absorption heat pump provides refrigerating capacity to satisfy the chilling requirement requirement of user institute, when first heat-mass exchange equipment and second heat-mass exchange equipment are born the required cold of user side jointly; All work in Driven by Solar Energy absorption heat pump, middle working media EGR and compression heat pump unit; The Driven by Solar Energy absorption heat pump drives the absorption heat pump unit and produces the middle working media of lower temperature, and middle working media is directly born the required part cold energy of user through first heat-mass exchange equipment earlier, gets into the first heat exchanger heat exchange of compression heat pump unit again; Recycle the cold energy that middle working media is contained once more through the source pump unit; When second heat-mass exchange equipment was independently born the required cold of user side, Driven by Solar Energy absorption heat pump and middle working media EGR all quit work, and the required cold of user is produced in the compression heat pump unit; When heating mode was worked, second control valve was opened, and first control valve is closed; The pyrosol that utilizes solar energy indirect generator to be produced gets into the solution storage jar after getting into solution heat exchanger and the heat exchange of low temperature side solution; Part solution is stored in the solution storage tank; Another part solution gets into the evaporimeter absorption and is cooled to lower temperature solution from the refrigerant vapour of generator and by middle working media in the heat exchange coil, and lower temperature solution inflow absorber flows into generator after sending into solution heat exchanger by solution pump again; The entering evaporimeter was absorbed by the solution from the solution storage tank after working medium solution was heated the refrigerant vapour that produces and flows through condenser, refrigerant liquid storage tank successively in the generator; Absorption process discharges absorption heat and is used to heat middle working media in the heat exchange coil; The working media temperature rises to more than 30 ℃ in the middle of in the heat exchange coil; When first heat-mass exchange equipment undertakes the whole thing the required thermic load of user side; The compression heat pump unit quits work; Only Driven by Solar Energy absorption heat pump and middle working media EGR work, the Driven by Solar Energy absorption heat pump provides heating capacity to satisfy the required thermic load requirement of user, when first heat-mass exchange equipment and second heat-mass exchange equipment are born the required thermic load of user side jointly; All work in Driven by Solar Energy absorption heat pump, middle working media EGR and compression heat pump unit; The Driven by Solar Energy absorption heat pump drives the absorption heat pump unit and produces the middle working media of higher temperature, and middle working media is directly born the required portion of hot load of user, the first heat exchanger heat exchange that gets into the compression heat pump unit again through first heat-mass exchange equipment earlier; Recycle the heat energy that middle working media is contained once more through the source pump unit; When second heat-mass exchange equipment was independently born the required thermic load of user side, Driven by Solar Energy absorption heat pump and middle working media EGR all quit work, and the required heat energy of user is produced in the compression heat pump unit.
Effect of the present invention and benefit are that working media is born the required part cold energy/heat energy of user in the middle of utilizing middle working media of Driven by Solar Energy absorption heat pump lower temperature that the unit is produced or higher temperature; And the cold energy that contained of working media/heat energy is supplied with the user in the middle of recycling once more through the source pump unit, thereby realize cold energy/heat energy classification utilization.
Further, be that latent heat or sensible heat store through refrigerant liquid storage tank and solution storage tank are set with conversion of solar energy, with the assurance system in night or cloudy continuous operation.
The also associated working but Driven by Solar Energy absorption heat pump of the present invention and electric energy drive compression formula heat pump can work independently; When solar energy is sufficient; The Driven by Solar Energy absorption heat pump works alone provides cold energy/heat energy can satisfy user's hot-cool demand, and energy-saving effect is best; When solar energy was not too sufficient, Driven by Solar Energy absorption heat pump and electric energy drive compression formula heat pump provided the user required cold energy/heat energy jointly, and energy-saving effect is better; When absorption heat pump can't be worked, electric energy drive compression formula heat pump can independently be born the required cold energy/heat energy of user.This system realizes the efficient utilization of low-grade regenerative resource such as solar energy, has stable and reliable operation, efficiency of energy utilization, good energy-conserving effect, has a extensive future.
Description of drawings
Fig. 1 is the structural principle sketch map of the embodiment of heat pump of the present invention.
The specific embodiment
As shown in Figure 1, a kind of embodiment of solar energy of the present invention and electric energy associated working combined heat pump system comprises solar absorption heat pump unit, middle working media EGR and compression heat pump unit three parts.The arrow display direction is the forward that fluid flows among the figure.In this embodiment, it is lithium bromide water solution that said solar absorption heat pump unit adopts working medium solution, and working media was a water in the middle of said middle working media EGR adopted, and said compression heat pump unit refrigeration working medium is a HFC class cold-producing medium.Certainly in other embodiments of the present invention; It is working medium solution that said solar absorption heat pump unit perhaps adopts ammonia spirit; It is middle working media that said middle working media EGR perhaps adopts saline solution or ethylene glycol solution, and it is refrigeration working medium that said compression heat pump unit perhaps adopts HC class cold-producing medium.
Said solar absorption heat pump unit comprises generator 1, condenser 2, refrigerant liquid storage tank 3, first throttle parts 4, the first check valve 8b, evaporimeter 5, absorber 6, solution pump 7, solution heat exchanger 9, solution storage tank 3a, first control valve 8, the second control valve 8a.The structure of the absorber in the solar absorption heat pump unit, generator, condenser, evaporimeter, throttle part and existing absorption type heat pump structure are similar.Said generator 1 is provided with solution inlet port, taphole and steam (vapor) outlet; Be provided with in the generator 1 and be used to heat the spiral heater 22 that flows into the working medium solution in the generator 1; Be connected with the low grade heat energy heater between the import and export of spiral heater 22; Low grade heat energy heater among this embodiment of the present invention is heat cycles pump 20, solar thermal collector 19, the auxiliary heater 21 that the port of export from spiral heater 22 is connected in series through pipeline to entrance point successively; Solar thermal collector 19 can be to carrying heating-supplied hot water in the spiral heater 22, the auxiliary heater 21 of combustion gas or fuel oil can provide assistant heating when shining upon deficiency.In other embodiments of the present invention, the low grade heat energy heater can only be provided with solar thermal collector and auxiliary heater is not set.Said absorber 6 has refrigerant inlet, absorber solution inlet port and absorber taphole, and the spray thrower of wherein establishing in absorber solution inlet port and the absorber 6 is communicated with.Be provided with in the said evaporimeter 5 be serially connected with said in the middle of heat exchange coil 5a in the working media EGR, evaporimeter 5 has import and outlet, evaporator is communicated with spray thrower in the evaporimeter 5.Be respectively equipped with first cooling coil 17 in said condenser 2 and the absorber 6 and the required cooling water of second cooling coil, 18, two cooling coils is provided by cooling tower, also can effluent water or the water source of lower temperature such as underground water provide.Said first throttle parts 4 can be selected U bend stream valve, manual throttle valve, heating power expansion valve or electric expansion valve.Said solution heat exchanger 9 has the low temperature side passage and the high temperature side passage that can carry out heat exchange each other.
The steam (vapor) outlet of generator 1 is connected with condenser 2, refrigerant liquid storage tank 3, first throttle parts 4, the first check valve 8b forward import successively; The taphole of generator 1 links to each other with the solution inlet port of solution heat exchanger 9 high temperature side passages; The taphole of the high temperature side passage of solution heat exchanger 9 links to each other with solution storage tank 3a; The outlet of solution storage tank 3a is divided into two-way; One road warp, first control valve 8 links to each other with the solution inlet port of absorber 6; Another road second control valve 8a converges with the outlet of the first check valve 8b forward again and links to each other with evaporimeter 5 imports; The outlet of evaporimeter 5 links to each other with the refrigerant inlet of absorber 6, and the absorber taphole of absorber 6 is through the solution inlet port of the low temperature side passage of pipeline, solution pump 7 access solution heat exchangers 9, and the taphole of the low temperature side passage of solution heat exchanger 9 links to each other with the solution inlet port of generator 1.
The working media EGR comprises circulating pump 7a that the mobile forward through pipeline longshore current body is connected in series successively, is located at the heat exchange coil 5a in the said evaporimeter 5, the middle working media passage of first heat-mass exchange equipment 10, the middle working media passage of Intermediate Heat Exchanger 11 in the middle of said.Said Intermediate Heat Exchanger 11 is between middle working media EGR and compression heat pump unit heat-exchanger rig between the two; The middle working media passage that had wherein both comprised working media EGR in the middle of inserting; Comprise the refrigeration working medium passage that inserts the compression heat pump unit again, the Intermediate Heat Exchanger 11 in the embodiments of the invention can be selected plate type heat exchanger, double pipe heat exchanger or shell and tube exchanger.First heat-mass exchange equipment 10 is responsible for to room cooling or heat supply, and first heat-mass exchange equipment 10 in the embodiments of the invention is radiant panel, air cooling fin pipe heat exchanger or spray chamber.
Said compression heat pump unit and of the prior art roughly the same with electric energy compressor driven formula air conditioner structure; Comprise the refrigeration working medium passage of compressor 15, four-way change-over valve 14, outdoor heat exchanger 16, Intermediate Heat Exchanger 11, the refrigeration working medium passage of second heat-mass exchange equipment 13; Compressor 15 exhaust outlets link to each other with four-way change-over valve 14 inlets; Four-way change-over valve 14 is totally three outlets; Link to each other with a port of the refrigeration working medium passage of compressor 15 air entries, second heat-mass exchange equipment 13, a port of outdoor heat exchanger 16 respectively, another port of refrigeration working medium passage of the refrigeration working medium passage of another port of outdoor heat exchanger 16 through pipeline and Intermediate Heat Exchanger 11, second throttle part 12, second heat-mass exchange equipment 13 is connected successively.
Second heat-mass exchange equipment 13 is responsible for to room cooling or heat supply, and first heat-mass exchange equipment 13 in the embodiments of the invention is water-cooled heat exchanger or air-cooled heat exchanger.Said second throttle part 12 can be selected capillary, heating power expansion valve or electric expansion valve commonly used in the prior art.Outdoor heat exchanger 16 is responsible for and the external environment heat exchange, and the outdoor heat exchanger 16 in the embodiments of the invention can be selected air-cooled hot heat exchange or water-cooled heat exchanger commonly used in the prior art.
But solar absorption heat pump unit in the above embodiment of the present invention and the both associated working of compression heat pump unit also can work independently; When solar absorption heat pump unit and the work of compression heat pump unit associations; Utilize Driven by Solar Energy absorption heat pump unit to produce middle working media of lower temperature or the middle working media of higher temperature; Middle working media is born the needed part cold energy/heat energy of user through first heat-mass exchange equipment earlier; Get into the refrigeration working medium heat exchange in Intermediate Heat Exchanger and the compression heat pump unit again, cold energy/heat energy that working media is contained in the middle of recycling once more through the source pump unit is supplied with the user; When the solar absorption heat pump unit works alone, utilize Driven by Solar Energy absorption heat pump unit to produce middle working media of lower temperature or the middle working media of higher temperature, bear the required whole cold energy/heat energy of user through first heat-mass exchange equipment; When the compression heat pump unit worked alone, the compression heat pump unit provided the user required whole cold energy/heat energy through second heat-mass exchange equipment.
Refrigerant liquid storage tank in the foregoing description among the present invention and solution storage tank are that/heat cold in order to store uses for no sunshine situation; Certainly also refrigerant liquid storage tank and solution storage tank can be set in other embodiments of the invention; Use the absorption heat pump back work under the sunlight conditions and such embodiment only is set at having, also can realize energy-saving and cost-reducing purpose to a certain extent.
The embodiment of the refrigerating and heating method of solar energy of the present invention and electric energy associated working combined heat pump system, adopt above-mentioned solar energy and electric energy associated working combined heat pump system implementation example under refrigeration mode or heating mode, to work and realize:
When work with refrigeration mode in Driven by Solar Energy absorption heat pump unit; First control valve 8 is opened; The second control valve 8a closes; During refrigeration mode work; The pyrosol that utilizes solar energy indirect generator 1 to be produced gets into solution storage jar 3a after getting into the solution heat exchange in solution heat exchanger 9 and the low temperature side passage wherein, and a part of solution is stored in solution storage tank 3a, and another part solution gets into absorber 6 through the absorber solution inlet port of control valve 8, absorber 6; Absorb the refrigerant vapour of flash-pot 5 and be cooled into the lower solution of temperature, after solution pump 7 is sent into solution heat exchanger 9 low temperature side imports, flow into generator 1 by the absorber taphole again again; In the generator 1 working medium solution be heated the refrigerant vapour that produces be condensed into liquid through condenser 2 and get into refrigerant liquid storage tank 3 again; Part liquid refrigerant is stored in refrigerant liquid storage tank 3; Another part after first throttle parts 4 are by the throttling step-down, become the cryogenic liquid cold-producing medium get in evaporimeter 5 and the heat exchange coil 5a in the middle of the working media heat exchange be vaporized into refrigerant vapour, refrigerant vapour gets in the absorber 6 through the refrigerant inlet of evaporimeter 5 outlets, absorber 6.The working media temperature is reduced to below 20 ℃ in the middle of in the said heat exchange coil 5a; When first heat-mass exchange equipment 10 undertakes the whole thing the required cold of user side; The compression heat pump unit quits work; Only Driven by Solar Energy absorption heat pump and middle working media EGR work, the Driven by Solar Energy absorption heat pump provides refrigerating capacity to satisfy the chilling requirement requirement of user institute, when first heat-mass exchange equipment 10 and second heat-mass exchange equipment 13 are born the required cold of user side jointly; All work in Driven by Solar Energy absorption heat pump, middle working media EGR and compression heat pump unit; The Driven by Solar Energy absorption heat pump drives the absorption heat pump unit and produces the middle working media of lower temperature, and middle working media is directly born the required part cold energy of user through first heat-mass exchange equipment 10 earlier, gets into Intermediate Heat Exchanger 11 heat exchange of compression heat pump unit again; Recycle the cold energy that middle working media is contained once more through the source pump unit; When second heat-mass exchange equipment 13 was independently born the required cold of user side, Driven by Solar Energy absorption heat pump and middle working media EGR all quit work, and the required cold of user is produced in the compression heat pump unit.
When work with heating mode in Driven by Solar Energy absorption heat pump unit, the second control valve 8a opens, and first control valve 8 is closed; The pyrosol that utilizes solar energy indirect generator 1 to be produced gets into solution storage jar 3a after getting into solution heat exchanger 9 and the heat exchange of low temperature side solution; Part solution is stored in solution storage tank 3a; Another part solution through pipeline and control valve 8a get into evaporimeter 5 absorb from the refrigerant vapour of generator 1 and in the middle of in by heat exchange coil 5a working media be cooled to lower temperature solution, lower temperature solution inflow absorber 6 flows into generator 1 after sending into solution heat exchanger 9 by solution pump 7 again; In the generator 1 working medium solution be heated the refrigerant vapour that produces flow through successively condenser (frozen-free process), refrigerant liquid storage tank 3 afterwards entering evaporimeters 5 absorbed by solution from solution storage tank 3a; Absorption process discharges absorption heat and is used to heat middle working media in the heat exchange coil 5a; The working media temperature rises to more than 30 ℃ in the middle of in the heat exchange coil 5a; When first heat-mass exchange equipment 10 undertakes the whole thing the required thermic load of user side; The compression heat pump unit quits work; Only Driven by Solar Energy absorption heat pump and middle working media EGR work, the Driven by Solar Energy absorption heat pump provides heating capacity to satisfy the required thermic load requirement of user, when first heat-mass exchange equipment 10 and second heat-mass exchange equipment 13 are born the required thermic load of user side jointly; All work in Driven by Solar Energy absorption heat pump, middle working media EGR and compression heat pump unit; The Driven by Solar Energy absorption heat pump drives the absorption heat pump unit and produces the middle working media of higher temperature, and middle working media is directly born the required portion of hot load of user, Intermediate Heat Exchanger 11 heat exchange that get into the compression heat pump unit again through first heat-mass exchange equipment 10 earlier; Recycle the heat energy that middle working media is contained once more through the source pump unit; When second heat-mass exchange equipment was independently born the required thermic load of user side, Driven by Solar Energy absorption heat pump and middle working media EGR all quit work, and the required heat energy of user is produced in the compression heat pump unit.
Said refrigerant liquid storage tank 3 is arranged between condenser 2 and the first throttle parts 4 in order to the storaging liquid cold-producing medium; Said solution storage tank 3a is arranged between high temperature side taphole, first control valve 8 and the second control valve 8a of solution heat exchanger 9 and is used for storage solutions; Refrigerant liquid storage tank and solution storage tank are that latent heat or sensible heat store on the daytime that sunlight is arranged with conversion of solar energy, with the assurance system in night or cloudy continuous operation.When night or when cloudy day illumination is all the time penetrated and absorption heat pump is worked with refrigeration mode; Refrigerant liquid storage tank 3 inner refrigerants after 4 throttlings of first throttle parts, get in the evaporimeter 5 with heat exchange coil 5a in the middle of working media heat exchange and be vaporizated into refrigerant vapour; Get into absorber 6 again and absorbed from the solution in the solution storage tank 3a, the solution after being cooled in the absorber 6 is sent solution storage tank 3a back to again through solution pump 7; When night or when cloudy day illumination is all the time penetrated and absorption heat pump is worked with heat supply mode; Working media heat exchange in the middle of the higher solution of temperature in the solution storage tank 3a is sent in evaporimeter 5 and the heat exchange coil 5a by solution pump 7; Solution temperature descends, and middle working media temperature raises.
Claims (7)
1. solar energy and electric energy associated working combined heat pump system comprise being used for and indoor heat-mass exchange equipment of carrying out heat exchange, it is characterized in that: also comprise solar absorption heat pump unit, middle working media EGR and compression heat pump unit; The solar absorption heat pump unit comprises generator (1), condenser (2), evaporimeter (5) and absorber (6); Said generator (1) has solution inlet port, taphole and steam (vapor) outlet; Be provided with the spiral heater (22) that is used for the heating of wherein working medium solution in the generator (1); Be connected with the low grade heat energy heater between the import and export of spiral heater (22), described low grade heat energy heater is heat cycles pump (20) from pipeline to entrance point that be connected in series successively through of the port of export from spiral heater (22), solar thermal collector (19), auxiliary heater (21) or the heat cycles pump (20) and the solar thermal collector (19) of serial connection successively; Said absorber (6) has refrigerant inlet, absorber solution inlet port and absorber taphole; Be equipped with the cooling device that is used for the fluid temperature reduction in it in said condenser and the absorber; Said evaporimeter (5) have import, outlet and in establish be serially connected with said in the middle of heat exchange coil (5a) on the working media EGR; The steam (vapor) outlet of said generator (1) is serially connected with condenser (2), first throttle parts (4), first check valve (8b) successively through pipeline; The taphole of generator (1) inserts the high temperature side passage of solution heat exchanger (9) through pipeline; The downstream pipeline of the high temperature side channel outlet of solution heat exchanger (9) is divided into two-way; Lead up to and link to each other through the solution inlet port of first control valve (8) with absorber (6); Another road second control valve (8a) converges with the forward outlet of said first check valve (8b) again and links to each other with evaporimeter (5) import; The outlet of evaporimeter (5) links to each other with the refrigerant inlet of absorber (6), and the absorber taphole of absorber (6) is connected in series the solution inlet port that inserts generator (1) behind the low temperature side passage of solution pump (7), solution heat exchanger (9) successively through pipeline; Described heat-mass exchange equipment is first heat-mass exchange equipment (10) and second heat-mass exchange equipment (13) that is connected the compression heat pump unit of working media EGR in the middle of connecting; Be provided with in-between Intermediate Heat Exchanger (11) between working media EGR and the compression heat pump unit in the middle of said, comprise the middle working media passage and the refrigeration working medium passage that inserts the compression heat pump unit of the middle working media EGR of access that can carry out heat exchange each other in the said Intermediate Heat Exchanger (11); The working media EGR comprises circulating pump (7a) that the mobile forward through pipeline longshore current body is connected in series successively, is located at heat exchange coil (5a) in the said evaporimeter (5), is located at the middle working media passage in said first heat-mass exchange equipment (10), the middle working media passage of Intermediate Heat Exchanger (11) in the middle of said; Said compression heat pump unit comprises the refrigeration working medium passage of compressor (15), four-way change-over valve (14), outdoor heat exchanger (16), Intermediate Heat Exchanger (11), the refrigeration working medium passage of second heat-mass exchange equipment (13); Said compressor (15) exhaust outlet links to each other with four-way change-over valve (14) inlet; Four-way change-over valve (14) is totally three outlets; Link to each other with a port of the refrigeration working medium passage of compressor (15) air entry, second heat-mass exchange equipment (13), a port of outdoor heat exchanger (16) respectively, another port of refrigeration working medium passage of the refrigeration working medium passage of another port of outdoor heat exchanger (16) through pipeline and Intermediate Heat Exchanger (11), second throttle part (12), second heat-mass exchange equipment (13) is connected successively.
2. solar energy according to claim 1 and electric energy associated working combined heat pump system is characterized in that: in said condenser and the absorber cooling device be provided with respectively in said condenser (2) and the absorber (6) by cooling tower or river, underground water the cooling coil of cold is provided.
3. solar energy according to claim 1 and electric energy associated working combined heat pump system; It is characterized in that: it is lithium bromide water solution or ammonia spirit that said solar absorption heat pump unit adopts working medium solution; Working media was water, saline solution or ethylene glycol solution in the middle of the working media EGR adopted in the middle of said, and said compression heat pump unit refrigeration working medium is HFC class or HC class cold-producing medium.
4. solar energy according to claim 1 and electric energy associated working combined heat pump system; It is characterized in that: said first heat-mass exchange equipment (10) is radiant panel, air cooling fin pipe heat exchanger or spray chamber, and said second heat-mass exchange equipment (13) is water-cooled heat exchanger or air-cooled heat exchanger.
5. according to any described solar energy in the claim 1～4 and electric energy associated working combined heat pump system; It is characterized in that: be serially connected with refrigerant liquid storage tank (3) between said condenser (3) and the first throttle parts (4); Be serially connected with solution storage tank (3a) on the downstream pipeline of the high temperature side channel outlet of said solution heat exchanger (9), the described pipeline that is divided into two-way is that the exit from said solution storage tank (3a) is separated.
6. the refrigerating and heating method of solar energy as claimed in claim 1 and electric energy associated working combined heat pump system is characterized in that: but solar absorption heat pump unit and the both associated working of compression heat pump unit also can work independently; When solar absorption heat pump unit and the work of compression heat pump unit associations; Utilize Driven by Solar Energy absorption heat pump unit to produce middle working media of lower temperature or the middle working media of higher temperature; Middle working media is born the required part cold energy/heat energy of user through first heat-mass exchange equipment earlier; Get into the first heat exchanger heat exchange of compression heat pump unit again, cold energy/heat energy that working media is contained in the middle of recycling once more through the source pump unit is supplied with the user; When the solar absorption heat pump unit works alone, utilize Driven by Solar Energy absorption heat pump unit to produce middle working media of lower temperature or the middle working media of higher temperature, bear the required whole cold energy/heat energy of user through first heat-mass exchange equipment; When the compression heat pump unit worked alone, the compression heat pump unit provided the user required whole cold energy/heat energy through second heat-mass exchange equipment.
7. method according to claim 6 is characterized in that: described solar energy and electric energy associated working combined heat pump system are with refrigeration mode or heating mode work; Be serially connected with refrigerant liquid storage tank (3) between said condenser (3) and the first throttle parts (4); Be serially connected with solution storage tank (3a) on the downstream pipeline of the high temperature side channel outlet of said solution heat exchanger (9), the described pipeline that is divided into two-way is that the exit from said solution storage tank (3a) is separated; When work with refrigeration mode in Driven by Solar Energy absorption heat pump unit; First control valve (8) is opened; Second control valve (8a) is closed; During refrigeration mode work, the pyrosol that utilizes solar energy indirect generator (1) to be produced gets into solution storage jar (3a) after getting into solution heat exchanger (9) and the heat exchange of low temperature side solution, and a part of solution is stored in solution storage tank (3a); Another part solution gets into absorber (6) and absorbs the refrigerant vapour of flash-pot (5) and the low solution of the temperature that is cooled, and flows into generator (1) again after sending into solution heat exchanger (9) by solution pump (7) again; The interior working medium solution of generator (1) be heated the refrigerant vapour that produces be condensed into liquid through condenser (2) and get into refrigerant liquid storage tank (3) again; Part liquid refrigerant is stored in refrigerant liquid storage tank (3); The working media heat exchange was vaporized into refrigerant vapour in the middle of another part became in cryogenic liquid cold-producing medium entering evaporimeter (5) and the heat exchange coil (5a) after first throttle parts (4) are by the throttling step-down; The working media temperature is reduced to below 20 ℃ in the middle of in the heat exchange coil (5a); When first heat-mass exchange equipment (10) undertakes the whole thing the required cold of user side; The compression heat pump unit quits work; Only Driven by Solar Energy absorption heat pump and middle working media EGR work, the Driven by Solar Energy absorption heat pump provides refrigerating capacity to satisfy the chilling requirement requirement of user institute, when first heat-mass exchange equipment (10) and second heat-mass exchange equipment (13) are born the required cold of user side jointly; All work in Driven by Solar Energy absorption heat pump, middle working media EGR and compression heat pump unit; The Driven by Solar Energy absorption heat pump drives the absorption heat pump unit and produces the middle working media of lower temperature, and middle working media is directly born the required part cold energy of user through first heat-mass exchange equipment (10) earlier, gets into first heat exchanger (11) heat exchange of compression heat pump unit again; Recycle the cold energy that middle working media is contained once more through the source pump unit; When second heat-mass exchange equipment (13) was independently born the required cold of user side, Driven by Solar Energy absorption heat pump and middle working media EGR all quit work, and the required cold of user is produced in the compression heat pump unit; When heating mode was worked, second control valve (8a) was opened, and first control valve (8) is closed; The pyrosol that utilizes solar energy indirect generator (1) to be produced gets into solution storage jar (3a) after getting into solution heat exchanger (9) and the heat exchange of low temperature side solution; Part solution is stored in solution storage tank (3a); Another part solution gets into evaporimeter (5) absorption and is cooled to lower temperature solution from the refrigerant vapour of generator (1) and by middle working media in the heat exchange coil (5a), and lower temperature solution inflow absorber (6) flows into generator (1) after sending into solution heat exchanger (9) by solution pump (7) again; The interior working medium solution of generator (1) is heated the refrigerant vapour that produces and flows through condenser (frozen-free process), refrigerant liquid storage tank (3) back successively and get into evaporimeter (5) and absorbed by the solution from solution storage tank (3a); Absorption process discharges absorption heat and is used to heat middle working media in the heat exchange coil (5a); The working media temperature rises to more than 30 ℃ in the middle of in the heat exchange coil (5a); When first heat-mass exchange equipment (10) undertakes the whole thing the required thermic load of user side; The compression heat pump unit quits work; Only Driven by Solar Energy absorption heat pump and middle working media EGR work; The Driven by Solar Energy absorption heat pump provides heating capacity to satisfy the required thermic load requirement of user; When first heat-mass exchange equipment (10) and second heat-mass exchange equipment (13) are born the required thermic load of user side jointly, all work in Driven by Solar Energy absorption heat pump, middle working media EGR and compression heat pump unit, and the Driven by Solar Energy absorption heat pump drives the absorption heat pump unit and produces working media in the middle of the higher temperature; Middle working media is directly born the required portion of hot load of user through first heat-mass exchange equipment (10) earlier; Get into first heat exchanger (11) heat exchange of compression heat pump unit again, the heat energy that working media is contained in the middle of recycling once more through the source pump unit is when second heat-mass exchange equipment is independently born the required thermic load of user side; Driven by Solar Energy absorption heat pump and middle working media EGR all quit work, and the required heat energy of user is produced in the compression heat pump unit.
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| CN201010510300A CN101963412B (en) | 2010-10-18 | 2010-10-18 | Solar energy and electric energy combined heat pump system and cooling and heating method |
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| CN201010510300A CN101963412B (en) | 2010-10-18 | 2010-10-18 | Solar energy and electric energy combined heat pump system and cooling and heating method |
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| CN101963412B true CN101963412B (en) | 2012-09-26 |
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| CN102116539B (en) * | 2011-03-31 | 2012-09-05 | 中国科学院广州能源研究所 | Adsorption and compression composite heat pump system driven by multiple heat sources |
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| CN102679621B (en) * | 2011-12-24 | 2014-04-09 | 河南科技大学 | Solar driven combined cooling, heating and power system |
| CN102628624A (en) * | 2012-04-25 | 2012-08-08 | 上禾谷能源科技（北京）有限公司 | Cascade lithium bromide refrigeration and cold storage system |
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| CN103090587A (en) * | 2013-01-21 | 2013-05-08 | 深圳市庄合地能产业科技有限公司 | Cold and hot external balance system for combined use of lithium bromide unit and refrigeration storage |
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| CN111076327B (en) * | 2019-12-20 | 2021-02-19 | 珠海格力电器股份有限公司 | Air conditioning system, control method and device thereof, and storage medium |
| CN113124584A (en) * | 2019-12-30 | 2021-07-16 | 阿里巴巴集团控股有限公司 | Refrigeration system, control method and data center |
| CN114017947B (en) * | 2020-07-17 | 2023-08-22 | 香港城市大学 | Multifunctional absorption energy storage type solar hybrid power heat pump and operation method |
| CN112629067B (en) * | 2020-10-28 | 2021-11-23 | 华南理工大学 | Two-stage compression composite refrigeration system with parallel thermal compression and mechanical compression and method thereof |
| CN114076422A (en) * | 2022-01-19 | 2022-02-22 | 湖南大学 | Solar energy absorption and compression combined type heat pump system and radiation heating and cooling method |
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