CN113654261A - Ocean temperature difference energy cold, heat and electricity and fresh water poly-generation system based on solar energy assistance - Google Patents

Ocean temperature difference energy cold, heat and electricity and fresh water poly-generation system based on solar energy assistance Download PDF

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Publication number
CN113654261A
CN113654261A CN202110985746.2A CN202110985746A CN113654261A CN 113654261 A CN113654261 A CN 113654261A CN 202110985746 A CN202110985746 A CN 202110985746A CN 113654261 A CN113654261 A CN 113654261A
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China
Prior art keywords
working medium
cycle
sub
heat
cold
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CN202110985746.2A
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Chinese (zh)
Inventor
卞永宁
杨童赟
王博
张宇彤
马骏
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Dalian University of Technology
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Dalian University of Technology
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Priority to CN202110985746.2A priority Critical patent/CN113654261A/en
Publication of CN113654261A publication Critical patent/CN113654261A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/08—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using ejectors
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/06—Flash evaporation
    • 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
    • F25B30/00—Heat pumps
    • F25B30/02—Heat pumps of the compression type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/40—Fluid line arrangements
    • 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
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
    • H02N11/002—Generators
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/08—Seawater, e.g. for desalination

Abstract

The invention belongs to the technical field of low-grade heat source efficient conversion, and provides an ocean temperature difference energy cold, heat and electricity and fresh water poly-generation system based on solar energy assistance. The invention uses ocean surface layer temperature seawater after solar energy heat collection as a heat source to heat and vaporize the low boiling point working medium from the working medium pump, and the seawater after heat exchange enters a single-pole flash tank to be flashed to generate fresh water. The vaporized working medium enters an expansion machine for working, dead steam discharged from the expansion machine enters a flow divider, and the flow divider divides the dead steam into two paths, wherein one path provides heat for a working fluid of an ejector in an ejection refrigeration sub-cycle; and the other path provides heat for the working medium in the sub-cycle of the vapor compression heat pump, so that the working medium is vaporized and enters the compressor, and the temperature is raised to supply heat to the outside. The two paths of working media after heat exchange enter a mixer for mixing, enter the generator again after being pressurized by a working medium pump, and are circulated in a reciprocating way. The invention realizes the recycling of low-grade heat energy of ocean temperature difference energy based on the assistance of solar energy, and can simultaneously output electric energy, cold energy, heat and fresh water.

Description

Ocean temperature difference energy cold, heat and electricity and fresh water poly-generation system based on solar energy assistance
Technical Field
The invention belongs to the technical field of low-grade heat source efficient conversion, and particularly relates to a solar-assisted ocean temperature difference energy cold, heat and electricity and fresh water poly-generation system, which is a circulating system for generating electricity, refrigerating, supplying heat and desalinating seawater by using solar energy and ocean temperature difference energy.
Background
With the rapid development of economy, the energy demand is more urgent, and a great amount of energy is consumed every year, wherein the mineral energy accounts for 92 percent of the total amount. In these fossil energy sources, coal accounts for over 70%. With the imminent exhaustion of mineral energy reserves and the serious environmental hazard caused in the utilization process of the mineral energy reserves, renewable energy sources such as solar energy, ocean temperature difference energy and the like are urgently needed to be developed so as to change an energy structure. Therefore, the development of a low-grade heat energy efficient conversion technology and the establishment of a sustainable energy supply system have great significance on strategic energy planning.
The ocean temperature difference energy is clean energy with great development value and potential, the ocean surface temperature in partial areas is above 25 ℃ all the year round, the deep sea temperature is about 5 ℃, and the ocean temperature difference energy resource is very rich. Ocean thermoelectric energy power generation mainly utilizes the difference in temperature of different degree of depth sea water temperatures, absorbs heat, drive generator blade electricity generation through working medium operation in the pipeline, then obtains the activity of lasting big electric energy through the circulation of resorption heat after the cooling. Ocean thermal energy power generation cycles are mainly divided into open, closed and mixed types. The ocean temperature difference energy power generation cycle has small temperature difference and low heat efficiency, so that commercialization is difficult to realize all the time.
The southern area is influenced by high temperature in summer, the power consumption and the water demand of the air conditioner in summer account for a large proportion, the fishery resources in coastal areas are rich, and the storage and the processing of seafood require the input of cold energy, heat and electric power. Therefore, the invention provides an ocean temperature difference energy cold, heat and electricity and fresh water poly-generation system based on solar energy assistance.
Disclosure of Invention
The invention aims to solve the problems in the prior art, provides an ocean temperature difference energy cooling, heating and power and fresh water poly-generation system based on solar energy assistance, and achieves the purpose of simultaneously providing electric energy, cold energy, heat and fresh water for users.
The technical scheme of the invention is as follows:
an ocean temperature difference energy cold, heat and electricity and fresh water poly-generation system based on solar energy assistance comprises a warm sea water pump 1, a solar panel 2, a generator 3, an expander 4, a generator 5, an adjustable flow splitter 6, a heating sub-cycle heat exchanger 7, a refrigerating sub-cycle heat exchanger 8, a mixer 9, a working medium pump 10, a flash tank 11, a condenser 12, a concentrated brine output channel 13, a compressor 14, a heating sub-cycle evaporator 15, a place requiring heat 16, a heating sub-cycle throttle valve 17, a refrigerating sub-cycle working medium pump 18, a refrigerating sub-cycle throttle valve 19, a refrigerating sub-cycle evaporator 20, a place requiring cold 21, an ejector 22, a refrigerating sub-cycle condenser 23 and a cold sea water pump 24.
The warm sea water pump 1 is connected with the solar panel 2 through a warm sea water conveying pipeline, and the warm sea water subjected to solar heat collection is connected with a warm sea water inlet end of the generator 3 through a pipeline and is used for transferring heat of the warm sea water to a circulating working medium; the outlet end of the warm sea water of the generator 3 is connected with the inlet end of the warm sea water of the flash tank 11, make the warm sea water enter the flash tank 11 and flash to produce vapor and strong brine, the cold sea water pumped out by the cold sea water pump 24 is connected with the cold sea water inlet end of the condenser 12 through the cold sea water transfer pipe, used for condensing the vapor to produce fresh water, the cold sea water outlet end of the condenser 12 is connected with the cold sea water drain pipe, the strong brine produced in the flash tank 11 is discharged through the strong brine output channel 13 at the same time; the working medium outlet end of the generator 3 is connected with the working medium inlet end of the expander 4, the expander 4 is connected with the generator 5, the generator 5 is driven to run to generate electric power to form a generator cycle, the generator 5 is connected with the compressor 14, the warm sea water pump 1, the cold sea water pump 24, the working medium pump 10 and the refrigerating sub cycle working medium pump 18, and the compressor 14, the warm sea water pump 1, the cold sea water pump 24, the working medium pump 10 and the refrigerating sub cycle working medium pump 18 are powered; the working medium outlet end of the expander 4 is connected with the working medium inlet end of the adjustable flow splitter 6, two working medium outlet ends of the adjustable flow splitter 6 are respectively connected with the working medium inlet end of the heating sub-cycle heat exchanger 7 and the working medium inlet end of the refrigerating sub-cycle heat exchanger 8, liquid-state circulating working mediums which are subjected to heat exchange from the heating sub-cycle heat exchanger 7 and the refrigerating sub-cycle heat exchanger 8 are respectively connected with the two working medium inlet ends of the mixer 9, the working medium outlet end of the mixer 9 is connected with the working medium inlet end of the working medium pump 10, and the working medium outlet end of the working medium pump 10 is connected with the working medium inlet end of the generator 3;
after the liquid circulating working medium passes through the throttling and pressure reducing effects of the heating sub-circulating throttle valve 17, the liquid circulating working medium enters the heating sub-circulating heat exchanger 7 to exchange heat with the circulating working medium flowing in from the flow-adjustable flow divider 6 and becomes a saturated or supersaturated steam state, the vapor circulating working medium coming out of the heating sub-circulating heat exchanger 7 is connected with the working medium inlet end of the compressor 14, the working medium outlet end of the compressor 14 is connected with the working medium inlet end of the heating sub-circulating evaporator 15, the heat output end of the heating sub-circulating evaporator 15 is connected with a place 16 needing heat, and the working medium outlet end of the heating sub-circulating evaporator 15 is connected with the working medium inlet end of the heating sub-circulating throttle valve 17, so that a heating sub-cycle is formed;
the working medium outlet end of the refrigeration sub-cycle working medium pump 18 is connected with the working medium inlet end of the refrigeration sub-cycle heat exchanger 8, the cycle working medium exchanges heat with the working medium flowing in by the adjustable flow diverter 6 through the refrigeration sub-cycle heat exchanger 8 and then flows into the injection end of the injector 22 as the working fluid of the injector 22, the working medium outlet end of the refrigeration sub-cycle throttle valve 19 is connected with the working medium inlet end of the refrigeration sub-cycle evaporator 20, the cold output end of the refrigeration sub-cycle evaporator 20 is connected with the place 21 requiring cold energy, the working medium output end of the refrigeration sub-cycle evaporator 20 is connected with the injected flow end of the injector 22, the working medium outlet end of the injector 22 is connected with the working medium inlet end of the refrigeration sub-cycle condenser 23, the cold sea water pumped out by the cold sea water pump 24 is connected with the cold sea water inlet end of the refrigeration sub-cycle condenser 23 through a cold sea water delivery pipeline, and the cold sea water outlet end of the refrigeration sub-cycle condenser 23 is connected with a cold sea water drainage pipe, the liquid-state circulating working fluid flowing out of the refrigerant sub-cycle condenser 23 flows into the refrigerant sub-cycle throttle valve 19 and the refrigerant sub-cycle working fluid pump 18, respectively, thereby forming a refrigerant sub-cycle.
The location 16 requiring heat is a domestic heat supply area.
The place 21 needing the cold energy is a cold storage.
The flow-adjustable flow divider 6 adjusts the flow of the two outlet ends in an automatic control or manual mode.
The circulating working medium is R123, R134a, R141b or R600a refrigerant.
The compressor 14 is connected with an external power supply device through a mechanical device, and additional mechanical energy is obtained from the outside.
The invention has the beneficial effects that:
1. organic Rankine cycle, steam compression heat pump cycle, injection refrigeration cycle and unipolar flash evaporation seawater desalination are organically integrated, low-grade heat energy recycling based on ocean temperature difference energy is achieved, and power supply, cold supply, heat supply and fresh water can be simultaneously provided for users.
2. The jet refrigeration sub-cycle is used for generating cold, wherein the jet replaces a compressor, so that the refrigeration sub-cycle has no other moving parts except a pump, the equipment is simple, the operation is stable, and the electric energy is saved.
3. The warm seawater after heat exchange with the working medium in the generator is used for flash evaporation seawater desalination, solar energy and surface warm seawater waste heat are fully utilized, and the energy conversion efficiency of the system is improved.
4. Compared with the common refrigeration cycle, the refrigeration cycle cools air at ambient temperature, and the cycle takes cold seawater as a cold source, so that the refrigeration energy efficiency ratio of the cycle is far higher than that of the common cycle.
5. The flow-adjustable flow divider is adopted, so that the refrigerating capacity and the heating capacity of the circulating output can be adjusted by adjusting the flow divider.
6. The invention not only can use warm seawater after solar heat collection as a heat source, but also can use waste heat, waste heat and other heat sources.
Drawings
Fig. 1 is a schematic diagram of an ocean temperature difference energy cooling, heating and power and fresh water poly-generation system based on solar energy assistance.
In the figure: the system comprises a 1-temperature sea water pump, a 2-solar panel, a 3-generator, a 4-expander, a 5-generator, a 6-flow-adjustable splitter, a 7-heating sub-cycle heat exchanger, a 8-refrigerating sub-cycle heat exchanger, a 9-mixer, a 10-working-medium pump, a 11-flash-evaporation tank, a 12-condenser, a 13-concentrated brine output channel, a 14-compressor, a 15-heating sub-cycle evaporator, a 16-required-heat place, a 17-heating sub-cycle throttle valve, an 18-refrigerating sub-cycle working-medium pump, a 19-refrigerating sub-cycle throttle valve, a 20-refrigerating sub-cycle evaporator, a 21-required-cold place, a 22-ejector, a 23-refrigerating sub-cycle condenser and a 24-cold sea water pump.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 1, the ocean temperature difference energy cold, heat and electricity and fresh water poly-generation system based on solar energy assistance comprises a warm sea water pump 1, a solar panel 2, a generator 3, an expander 4, a generator 5, an adjustable flow splitter 6, a heating sub-cycle heat exchanger 7, a refrigerating sub-cycle heat exchanger 8, a mixer 9, a working medium pump 10, a flash tank 11, a condenser 12, a concentrated brine output channel 13, a compressor 14, a heating sub-cycle evaporator 15, a place requiring heat 16, a heating sub-cycle throttle valve 17, a refrigerating sub-cycle working medium pump 18, a refrigerating sub-cycle throttle valve 19, a refrigerating sub-cycle evaporator 20, a place requiring cold 21, an ejector 22, a refrigerating sub-cycle condenser 23 and a cold sea water pump 24.
The working principle of the invention is as follows:
the warm sea water pump 1 extracts warm sea water from the surface layer of the sea and conveys the warm sea water to the solar panel 2 for heat collection, the collected warm sea water is used as a heat source of the poly-generation system to transfer heat to a working medium flowing into the generator 3 in the generator 3, so that a liquid working medium is changed into a saturated or supersaturated steam state, the warm sea water after heat release is conveyed into the flash tank 11 for flash evaporation to generate steam and strong brine, the steam discharged from the top of the flash tank 11 is condensed by cold sea water conveyed by the cold sea water pump 24 to obtain pure water, and meanwhile, the strong brine is discharged through a strong brine output channel 13 at the bottom of the flash tank 11; the gaseous working medium from the generator 3 enters the expander 4 to push the expander 4 to do work, the expander 4 drives the generator 5 to operate to generate electric power to form a generator sub-cycle, the generator 5 supplies power to the compressor 14, the warm sea water pump 1, the cold sea water pump 24, the working medium pump 10 and the refrigeration sub-cycle working medium pump 18, and the residual electric power is transmitted to a user for use; the exhaust steam from the expansion machine 4 enters an adjustable flow splitter 6 for splitting, and the flow of the working medium entering a heating sub-cycle heat exchanger 7 and a refrigerating sub-cycle heat exchanger 8 is controlled by the adjustable flow splitter 6, so that the heating capacity of the heating sub-cycle and the refrigerating capacity of the refrigerating sub-cycle can be controlled; the exhaust steam after heat exchange in the heating sub-cycle heat exchanger 7 and the refrigerating sub-cycle heat exchanger 8 is completely converted into liquid state and flows into the mixer 9 for mixing, the working medium outlet end of the mixer 9 is connected with the working medium inlet end of the working medium pump 10, and the working medium outlet end of the working medium pump 10 is connected with the working medium inlet end of the generator 3.
After the throttling and pressure reducing effects of the heating sub-cycle throttle valve 17, the liquid working medium enters the heating sub-cycle heat exchanger 7 to exchange heat with the working medium flowing in from the flow-adjustable splitter 6, the liquid working medium is changed into a saturated or supersaturated steam state, the vapor working medium coming out of the heating sub-cycle heat exchanger 7 enters the compressor 14 to be compressed in an isentropic manner, the temperature of the vapor working medium is increased, the working medium outlet end of the compressor 14 is connected with the working medium inlet end of the heating sub-cycle evaporator 15, the heat is transferred to a place 16 needing the heat in the heating sub-cycle evaporator 15 and is changed into the liquid state from the vapor state, and the working medium outlet end of the heating sub-cycle evaporator 15 is connected with the working medium inlet end of the heating sub-cycle throttle valve 17, so that the heating sub-cycle is formed.
The working medium outlet end of the refrigeration sub-cycle working medium pump 18 is connected with the working medium inlet end of the refrigeration sub-cycle heat exchanger 8, so that the working medium is changed into a saturated or supersaturated steam state after being subjected to heat exchange with the working medium flowing in by the flow-adjustable flow divider 6, the working fluid serving as the ejector 22 flows into the injection flow end of the ejector 22, the liquid working medium after throttling and pressure reduction by the refrigeration sub-cycle throttle valve 19 flows into the refrigeration sub-cycle evaporator 20 to absorb heat, and the cold output end of the refrigeration sub-cycle evaporator 20 is connected with a place 21 needing cold, so that cold is generated; the working medium output end of the refrigerating sub-circulation evaporator 20 is connected with the injected flow end of the injector 22, the working medium outlet end of the injector 22 is connected with the working medium inlet end of the refrigerating sub-circulation condenser 23, cold seawater pumped by the cold seawater pump 24 is connected with the cold seawater inlet end of the refrigerating sub-circulation condenser 23 through a cold seawater conveying pipeline, the working medium discharged from the injector is completely condensed into liquid in the refrigerating sub-circulation condenser 23, and the liquid working medium discharged from the refrigerating sub-circulation condenser 23 flows into the refrigerating sub-circulation throttle valve 19 and the refrigerating sub-circulation working medium pump 18 respectively, so that the refrigerating sub-circulation is formed.

Claims (10)

1. The solar-assisted ocean temperature difference energy cold, heat and electricity and fresh water poly-generation system is characterized by comprising a temperature sea water pump (1), a solar panel (2), a generator (3), an expander (4), a generator (5), an adjustable flow divider (6), a heating sub-cycle heat exchanger (7), a refrigerating sub-cycle heat exchanger (8), a mixer (9), a working medium pump (10), a flash tank (11), a condenser (12), a concentrated brine output channel (13), a compressor (14), a heating sub-cycle evaporator (15), a place (16) requiring heat, a heating sub-cycle throttle valve (17), a refrigerating sub-cycle working medium pump (18), a refrigerating sub-cycle throttle valve (19), a refrigerating sub-cycle evaporator (20), a place (21) requiring cold, and a heat pump, An ejector (22), a refrigeration sub-cycle condenser (23) and a cold seawater pump (24);
the warm sea water pump (1) is connected with the solar panel (2) through a warm sea water conveying pipeline, and the warm sea water subjected to solar heat collection is connected with a warm sea water inlet end of the generator (3) through a pipeline and is used for transferring heat of the warm sea water to a circulating working medium; the outlet end of the warm sea water of the generator (3) is connected with the inlet end of the warm sea water of the flash tank (11), make the warm sea water enter the flash tank (11) and flash and thus produce vapor and strong brine, the cold sea water pumped out by the cold sea water pump (24) is connected with cold sea water inlet end of the condenser (12) through the cold sea water transfer pipe, used for condensing the vapor in order to produce the fresh water, the cold sea water outlet end of the condenser (12) is connected with water drain pipe of the cold sea water, the strong brine produced in the flash tank (11) is discharged through the strong brine output channel (13) at the same time; the working medium outlet end of the generator (3) is connected with the working medium inlet end of the expander (4), the expander (4) is connected with the generator (5) to drive the generator (5) to operate to generate electric power to form generator circulation, and the generator (5) is connected with the compressor (14), the warm sea water pump (1), the cold sea water pump (24), the working medium pump (10) and the refrigerating sub-circulation working medium pump (18) to supply power to the compressor (14), the warm sea water pump (1), the cold sea water pump (24), the working medium pump (10) and the refrigerating sub-circulation working medium pump (18); the working medium outlet end of the expander (4) is connected with the working medium inlet end of the adjustable flow splitter (6), two working medium outlet ends of the adjustable flow splitter (6) are respectively connected with the working medium inlet end of the heating sub-cycle heat exchanger (7) and the working medium inlet end of the refrigerating sub-cycle heat exchanger (8), liquid-state circulating working medium which is discharged after heat exchange of the heating sub-cycle heat exchanger (7) and the refrigerating sub-cycle heat exchanger (8) is respectively connected with the two working medium inlet ends of the mixer (9), the working medium outlet end of the mixer (9) is connected with the working medium inlet end of the working medium pump (10), and the working medium outlet end of the working medium pump (10) is connected with the working medium inlet end of the generator (3);
after the liquid circulating working medium passes through the throttling and pressure reducing effects of the heating sub-circulating throttle valve (17), the liquid circulating working medium enters the heating sub-circulating heat exchanger (7) to exchange heat with the circulating working medium flowing in from the flow-adjustable flow divider (6) and becomes a saturated or supersaturated steam state, the vapor circulating working medium coming out of the heating sub-circulating heat exchanger (7) is connected with the working medium inlet end of the compressor (14), the working medium outlet end of the compressor (14) is connected with the working medium inlet end of the heating sub-circulating evaporator (15), the heat output end of the heating sub-circulating evaporator (15) is connected with a place (16) needing heat, the working medium outlet end of the heating sub-circulating evaporator (15) is connected with the working medium inlet end of the heating sub-circulating throttle valve (17), and a heating sub-cycle is formed;
the working medium outlet end of the refrigerating sub-cycle working medium pump (18) is connected with the working medium inlet end of the refrigerating sub-cycle heat exchanger (8), the cycle working medium exchanges heat with the cycle working medium flowing in the flow-adjustable flow divider (6) after exchanging heat through the refrigerating sub-cycle heat exchanger (8) and then flows into the injection end of the injector (22) as the working fluid of the injector (22), the working medium outlet end of the refrigerating sub-cycle throttle valve (19) is connected with the working medium inlet end of the refrigerating sub-cycle evaporator (20), the cold output end of the refrigerating sub-cycle evaporator (20) is connected with the place (21) needing cold, the working medium output end of the refrigerating sub-cycle evaporator (20) is connected with the injected flow end of the injector (22), the working medium outlet end of the injector (22) is connected with the working medium inlet end of the refrigerating sub-cycle condenser (23), and the cold sea water pumped by the cold sea water pump (24) is connected with the cold sea water inlet end of the refrigerating sub-cycle condenser (23) through a cold sea water delivery pipeline The cold seawater outlet end of the refrigeration sub-cycle condenser (23) is connected with a cold seawater drainage pipe, and the liquid cycle working medium flowing out of the refrigeration sub-cycle condenser (23) respectively flows into the refrigeration sub-cycle throttle valve (19) and the refrigeration sub-cycle working medium pump (18) to form refrigeration sub-cycle.
2. The solar-assisted ocean thermal energy cold, heat, electricity and fresh water poly-generation system according to claim 1, wherein the site (16) requiring heat is a domestic heat supply area.
3. The solar-assisted ocean thermal energy cold, heat and electricity and fresh water poly-generation system according to claim 1 or 2, wherein the place (21) requiring refrigeration is a refrigeration house.
4. The solar-assisted ocean thermal energy cooling, heating, and power and fresh water poly-generation system according to claim 1 or 2, wherein the flow divider (6) is capable of adjusting the flow at the two outlet ends automatically or manually.
5. The solar-assisted ocean thermal energy, thermal electricity and fresh water poly-generation system as claimed in claim 1 or 2, wherein the circulating working medium is R123, R134a, R141b or R600a refrigerant.
6. The solar-assisted ocean thermal energy, thermal electricity and fresh water poly-generation system according to claim 3, wherein the circulating working medium is R123, R134a, R141b or R600a refrigerant.
7. The solar-assisted ocean thermal energy, thermal electricity and fresh water poly-generation system according to claim 4, wherein the circulating working medium is R123, R134a, R141b or R600a refrigerant.
8. A combined cycle power generation and refrigeration system based on ocean thermal energy as claimed in claim 1, 2, 6 or 7 wherein the compressor (14) and the external power supply are connected by mechanical means to take additional mechanical energy from the outside.
9. A combined cycle system for power generation and refrigeration based on ocean thermal energy as claimed in claim 3 wherein the compressor (14) and the external power supply are connected by mechanical means to take additional mechanical energy from the outside.
10. A combined cycle for power generation and refrigeration based on ocean thermal energy as claimed in claim 4 wherein the compressor (14) and the external power supply are connected by mechanical means to take additional mechanical energy from the outside.
CN202110985746.2A 2021-08-26 2021-08-26 Ocean temperature difference energy cold, heat and electricity and fresh water poly-generation system based on solar energy assistance Pending CN113654261A (en)

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CN202110985746.2A CN113654261A (en) 2021-08-26 2021-08-26 Ocean temperature difference energy cold, heat and electricity and fresh water poly-generation system based on solar energy assistance

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CN202110985746.2A CN113654261A (en) 2021-08-26 2021-08-26 Ocean temperature difference energy cold, heat and electricity and fresh water poly-generation system based on solar energy assistance

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