CN106286170B - Solar energy, sea water source heat pump, combustion gas and supercritical carbon dioxide combined marine electricity generation system - Google Patents

Solar energy, sea water source heat pump, combustion gas and supercritical carbon dioxide combined marine electricity generation system Download PDF

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Publication number
CN106286170B
CN106286170B CN201610670264.7A CN201610670264A CN106286170B CN 106286170 B CN106286170 B CN 106286170B CN 201610670264 A CN201610670264 A CN 201610670264A CN 106286170 B CN106286170 B CN 106286170B
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heat
outlet
carbon dioxide
supercritical carbon
entrance
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CN106286170A (en
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谢永慧
王宇璐
张荻
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Xi an Jiaotong University
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Xi an Jiaotong University
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03GSPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G6/00Devices for producing mechanical power from solar energy
    • F03G6/06Devices for producing mechanical power from solar energy with means for concentrating solar rays
    • F03G6/064Devices for producing mechanical power from solar energy with means for concentrating solar rays having a gas turbine cycle, i.e. compressor and gas turbine combination
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03GSPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G6/00Devices for producing mechanical power from solar energy
    • F03G6/003Devices for producing mechanical power from solar energy having a Rankine cycle
    • F03G6/005Devices for producing mechanical power from solar energy having a Rankine cycle using an intermediate fluid for heat transfer
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F01K23/10Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/08Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
    • F01K25/10Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
    • F01K25/103Carbon dioxide
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/32Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines using steam of critical or overcritical pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use
    • F02C6/18Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use
    • F02C6/20Adaptations of gas-turbine plants for driving vehicles
    • F02C6/203Adaptations of gas-turbine plants for driving vehicles the vehicles being waterborne vessels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03GSPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/04Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using pressure differences or thermal differences occurring in nature
    • F03G7/05Ocean thermal energy conversion, i.e. OTEC
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00Solar heat collectors using working fluids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S60/00Arrangements for storing heat collected by solar heat collectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B30/00Heat pumps
    • F25B30/06Heat pumps characterised by the source of low potential heat
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03GSPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G2007/007Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using heat pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2400/00General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/24Storage receiver heat
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/30Energy from the sea, e.g. using wave energy or salinity gradient
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/44Heat exchange systems
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/46Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/14Combined heat and power generation [CHP]

Abstract

Solar energy, sea water source heat pump, combustion gas and supercritical carbon dioxide combined marine electricity generation system of the present invention, including solar thermal collection system, seawater source heat pump system, gas turbine generating system and supercritical carbon dioxide recompress Brayton cycle electricity generation system.When work, low grade heat energy is extracted from seawater using water resource heat pump, it consumes less electric energy and is promoted to origin of heat of the high-grade thermal energy as the supercritical carbon dioxide circulatory system, origin of heat using solar thermal collector acquisition thermal energy as the supercritical carbon dioxide circulatory system simultaneously, the exhaust gas of gas turbine discharge and the waste heat of heat exchange are recycled, realizes the cascade utilization of the energy;Supercritical carbon dioxide recompression Brayton cycle uses supercritical carbon dioxide for working medium, and dynamic power machine is compact-sized, and economic performance is good.Realize that stable combined marine power generation, generated electric energy finally enter network of ship in conjunction with gas turbine generating system and supercritical carbon dioxide recompression Brayton Cycle system.

Description

Solar energy, sea water source heat pump, combustion gas and the power generation of supercritical carbon dioxide combined marine System
Technical field:
The present invention relates to a kind of solar energy, sea water source heat pump, combustion gas and supercritical carbon dioxide combined marine electricity generation system, Belong to energy conversion field, it is dynamic for solar energy source, the utilization of marine energy and supercritical carbon dioxide recompression Bretton The application of power cycle.
Background technology:
Since industry in recent years and manufacturing industry are grown rapidly, the demand of conventional fossil fuel rises steadily, this directly leads Global energy shortages is caused, the exhaust gas of direct emission can cause the waste of residual heat resources after burning, reduce the energy of fossil fuel Source utilization rate.Novel energy utilization patterns are developed, using the clean energy resource of nature, the waste heat energy in exhaust gas is recycled, carries High energy source utilization rate etc. is the existing feasible method for capableing of alleviating energy crisis and greenhouse effects.
Solar energy is clean regenerative resource, inexhaustible, there is huge solar energy resources on the earth For directly developing and using, and convenient for acquisition.In the case where fossil fuel is reduced increasingly, solar energy has become mankind's use The important component of the energy, and be constantly developed.According to statistics, the solar radiant energy reached on earth surface every year is about suitable In 150,000,000,000,000 tons of coals, total amount belongs to the maximum energy that can be developed in the world now.The thought of sustainable development is adhered to, rationally, Solar energy is made full use of, alleviates the pressure that traditional energy is brought to resource environment, becomes the hot spot of research.
Carbon dioxide has huge development potentiality as green working medium emerging in recent years in terms of thermodynamic cycle.Two Carbonoxide is widely present in nature, and the influence to environment is small, rich reserves and cheap and easy to get, nontoxic and chemical property stabilization. The critical-temperature of carbon dioxide is 304.21K, critical pressure 7.377MPa, is easier to realize overcritical condition, to equipment It is required that it is relatively low, reduce manufacturing cost.Carbon dioxide has the objects such as high density, low viscosity, high diffusivity coefficient in Near The Critical Point Rationality matter, less work done during compression need to be only consumed in thermodynamic cycle can make fluid compression to elevated pressures, be conducive to raising heat Force system net efficiency.Using supercritical carbon dioxide as the compact-sized of the dynamic power machines such as the compressor of working medium, gas-turbine, volume compared with It is small.
Heat pump, can be from the empty gas and water of nature and soil etc. as the novel energy utilization technology being concerned in recent years Low grade heat energy is obtained in surrounding medium, by consuming seldom electric energy, extract 4-7 times of electric energy for the high-grade that utilizes Thermal energy.Water resource heat pump is with earth surface shallow-layer water source, such as underground water, lake and ocean are low-temperature heat source, realize low-grade heat The transfer of high-grade thermal energy can be arrived, it the advantages of be water source temperature generally variation it is smaller, can be in Various Seasonal and day gas bar Metastable low-temperature heat source is provided under part.Wherein, sea water source heat pump is to rely on sufficient Ocean thermal energy, is extracted from seawater Available thermal energy realizes the development and utilization to regenerative resource.
To promote the utilization rate of the clean energy resource including solar energy source, Ocean thermal energy, existing application mode is improved, is subtracted Few traditional energy has become the common recognition of international community to the harm that environment for human survival is brought.On large ship, because of ground system Preferably, using clean energy resourcies such as abundant solar energy, Ocean thermal energys, the cascade utilization of the energy is realized, for improving using energy source effect Rate reduces the consumption of the traditional energy on ship in electric energy production process and is of great significance.
Invention content:
The purpose of the present invention is to provide the utilization Ocean thermal energys that can be applied on large ship, pass through sea water source heat pump Low grade heat energy in seawater is promoted to available high-grade thermal energy, realizes the utilization of clean energy resource, while being the sun The utilization of the energy, the utilization of Ocean thermal energy and the application of supercritical carbon dioxide recompression Brayton cycle provide the one of new approaches Kind solar energy, sea water source heat pump, combustion gas and supercritical carbon dioxide combined marine electricity generation system.The power generation of the power generation system of ship Process, which has, to be made full use of abundant sea water heat energy, is imitated using cleaning solar energy, realization energy cascade utilization, raising using energy source The good characteristics such as rate, cogeneration, while supercritical carbon dioxide cycle has that dynamic power machine is compact-sized, occupies little space Advantage, space on ship can be saved by being applied to large ship electricity generation system.
In order to achieve the above objectives, the present invention, which adopts the following technical scheme that, is achieved:
Solar energy, sea water source heat pump, combustion gas and supercritical carbon dioxide combined marine electricity generation system, including solar energy heating System, seawater source heat pump system, gas turbine generating system and supercritical carbon dioxide recompress Brayton cycle electricity generation system, Wherein,
The solar thermal collection system includes solar thermal collector, heat dump, second throttle, the second heat exchanger, Three throttle valves, high-temperature heat-storage tank, third heat exchanger and low temperature heat storage can;
The seawater source heat pump system includes seawater water source, water pump, evaporator, the first compressor, condenser, throttling dress It sets, the first heat storage can and First Heat Exchanger;
The gas turbine generating system includes fuel storage tank, the 5th heat exchanger, the second compressor, burner, combustion Gas turbine, gas turbine powered generator, the 4th throttle valve, first throttle valve and the 4th heat exchanger;
The supercritical carbon dioxide recompression Brayton cycle electricity generation system includes supercritical carbon dioxide turbine, hair Motor, high temperature regenerator, cryogenic regenerator, cooler, main compressor, recompression machine, First Heat Exchanger and third heat exchanger;
Solar thermal collector is connected with the entrance of heat dump, and the outlet of heat dump is divided into two branches, and a branch is through second Throttle valve is connected with the cycle fluid entrance of the second heat exchanger, the cycle fluid outlet of the second heat exchanger and entering for high-temperature heat-storage tank Mouth is connected;Another branch is connected through third throttle valve with the entrance of high-temperature heat-storage tank, and outlet and the third of high-temperature heat-storage tank exchange heat The high temperature side fluid inlet of device is connected, and the high temperature side fluid outlet of third heat exchanger is connected with the entrance of low temperature heat storage can, low temperature The outlet of heat storage can is connected with another entrance of heat dump;
Seawater water source is connected with the entrance of water pump, and the outlet of water pump is connected with the entrance of evaporator, the outlet of evaporator with The entrance of first compressor is connected, and the outlet of the first compressor is connected with the entrance of condenser, condenser and the first heat storage can Entrance is connected, and the outlet of condenser is connected with the entrance of throttling set, and the outlet of throttling set is connected with the entrance of evaporator, shape At the working cycles of heat pump, the outlet of the first heat storage can is connected with the high temperature side fluid inlet of First Heat Exchanger, First Heat Exchanger High temperature side fluid outlet be connected with the high temperature side fluid inlet of the 5th heat exchanger, the high temperature side fluid outlet of the 5th heat exchanger with The entrance of first heat storage can is connected;
Second compressor is equipped with air intake, and the outlet of the second compressor is connected with the gas access of burner, burns Device is equipped with fuel inlet, and the outlet of fuel storage tank is connected with the fuel inlet of the 5th heat exchanger, the fuel of the 5th heat exchanger Outlet is connected with the fuel inlet of burner, and the outlet of burner is connected with the entrance of combustion gas turbine, the outlet point of combustion gas turbine For two branches, a branch is connected by the 4th throttle valve with the exhaust gas entrance of the second heat exchanger;Another branch passes through first segment Stream valve is connected with the high temperature side fluid inlet of the 4th heat exchanger;Combustion gas turbine is connected by shafting with gas turbine powered generator, band Dynamic gas turbine powered generator power generation;
The cycle fluid entrance of First Heat Exchanger is connected with the low temperature side fluid outlet of high temperature regenerator, First Heat Exchanger Cycle fluid outlet is connected with the cycle fluid entrance of third heat exchanger, the cycle fluid outlet and overcritical two of third heat exchanger The entrance of carbonoxide turbine is connected, the outlet of supercritical carbon dioxide turbine and the high temperature side fluid inlet phase of high temperature regenerator Even, supercritical carbon dioxide turbine is connected by shafting with generator, drives electrical power generators;The high temperature effluent of high temperature regenerator Body outlet is connected with the high temperature side fluid inlet of cryogenic regenerator, the high temperature side fluid outlet working medium shunting of cryogenic regenerator, Enter all the way from the entrance of cooler, the outlet of cooler is connected with the entrance of main compressor, the outlet of main compressor and low temperature The low temperature side fluid inlet of regenerator is connected, the low temperature side fluid outlet of cryogenic regenerator and the low temperature side liquid of high temperature regenerator Entrance is connected;Another way enters from the entrance of recompression machine, and the outlet for recompressing machine and the low temperature side liquid of high temperature regenerator enter Mouth is connected.
The present invention, which further improves, to be, the supercritical carbon dioxide, which recompresses Brayton Cycle system and selects, to be surpassed Critical carbon dioxide utilizes solar energy heating working medium supercritical carbon dioxide as working medium.
The present invention, which further improves, to be, is acquired to Ocean thermal energy using water resource heat pump, super for heating working medium Critical carbon dioxide.
The present invention, which further improves, to be, the overcritical titanium dioxide of waste gas residual heat heating working medium of discharge of gas turbine is utilized Carbon ensures to provide certain heat in solar energy deficiency, and realizes the cascade utilization of the energy.
The present invention, which further improves, to be, supercritical carbon dioxide recompression Brayton Cycle system is provided with Shunting recompression cycle.
The present invention, which further improves, to be, is provided hot water peculiar to vessel using the waste gas residual heat of discharge of gas turbine, is realized energy The cascade utilization in source.
The present invention, which further improves, to be, using the waste heat of the extracted heat of water resource heat pump to fuel preheating.
The present invention, which further improves, to be, outlet is provided on the second heat exchanger so that the exhaust gas after UTILIZATION OF VESIDUAL HEAT IN is discharged.
The present invention, which further improves, to be, outlet is provided on the 4th heat exchanger so that the exhaust gas after UTILIZATION OF VESIDUAL HEAT IN is discharged.
The present invention, which further improves, to be, the seawater source heat pump system includes the 5th throttle valve, is connected to water Between pump and evaporator, to adjust seawater flow.
Compared with spot ship electricity generation system, the main distinction is to utilize cleaning energy the combined marine electricity generation system of the present invention Solar energy using Ocean thermal energy and realizes the cascade utilization of the energy.This combined generating system is to extract sea using water resource heat pump Foreign thermal energy recompresses the primary heat exchange heat source in Brayton cycle as supercritical carbon dioxide;Made using clean energy resource solar energy The secondary heat exchange heat source in Brayton cycle is recompressed for supercritical carbon dioxide;Using the exhaust gas of combustion gas turbine as solar energy The heat source of supplemental heat source and supply hot water peculiar to vessel when insufficient;Brayton cycle and combustion gas are recompressed by supercritical carbon dioxide Turbine realizes cogeneration.The system has the advantages that following:
1, the system realizes the utilization to containing abundant Ocean thermal energy, and less electric energy is consumed by water resource heat pump, The available high-grade thermal energy of 4-7 times of electric energy is extracted, the temperature fluctuation at seawater water source is small, and heat deposit is big, is to obtain Stablize the reliable sources of heat.The system is applied on large ship, and adaptation to local conditions is provided using the seawater water source being available anywhere Heat not only realizes the utilization to regenerative resource, is also had little effect to ecological environment, realizes sustainable development.
2, the system is realized pair using regenerative resource solar energy acquisition heat with heating working medium supercritical carbon dioxide The utilization of clean energy resource reduces the utilization rate of non-renewable energy resources in entire electricity generation system, is provided for the utilization of solar energy New approaches.
3, supercritical carbon dioxide recompression Brayton Cycle system is used in the system, is provided with shunting recompression knot Structure can occur " folder point " to avoid regenerator, improve system circulation efficiency.
4, the recompression Brayton Cycle system in the present invention uses supercritical carbon dioxide for working medium, since working medium is being faced Excellent hot physical property matter near boundary's point, the structure of dynamic power machine is more compact in cycle, the space occupied smaller, suitable in large size It is applied on ship, there is preferable economy.
5, the present invention combines solar energy, sea water source heat pump, combustion gas and supercritical carbon dioxide recompression Brayton cycle system System realizes the cascade utilization to the energy, can reach the target that joint provides electric energy needed for stable ship.
Description of the drawings:
Fig. 1 is solar energy, sea water source heat pump, combustion gas and the supercritical carbon dioxide combined marine electricity generation system.
In figure:1 is seawater water source, and 2 be water pump, and 3 be the 5th throttle valve, and 4 be evaporator, and 5 be the first compressor, and 6 be cold Condenser, 7 be throttling set, and 8 be the first heat storage can, and 9 be First Heat Exchanger, and 10 be fuel storage tank, and 11 be the 5th heat exchanger, 12 For the second compressor, 13 be burner, and 14 be combustion gas turbine, and 15 be gas turbine powered generator, and 16 be the 4th throttle valve, and 17 be the One throttle valve, 18 be the 4th heat exchanger, and 19 be solar thermal collector, and 20 be heat dump, and 21 be second throttle, and 22 change for second Hot device, 23 be third throttle valve, and 24 be high-temperature heat-storage tank, and 25 be third heat exchanger, and 26 be low temperature heat storage can, and 27 be overcritical two Carbonoxide turbine, 28 be generator, and 29 be high temperature regenerator, and 30 be cryogenic regenerator, and 31 be cooler, and 32 be main compressor, 33 be recompression machine.
Specific implementation mode:
Below in conjunction with attached drawing, the present invention is described in further detail.
Referring to Fig. 1, a kind of solar energy of the present invention, sea water source heat pump, combustion gas and the power generation of supercritical carbon dioxide combined marine System, including solar thermal collection system, seawater source heat pump system, gas turbine generating system and supercritical carbon dioxide recompression Brayton cycle electricity generation system.
Wherein, the solar thermal collection system includes solar thermal collector 19, heat dump 20, second throttle 21, Two heat exchangers 22, third throttle valve 23, high-temperature heat-storage tank 24, third heat exchanger 25 and low temperature heat storage can 26.Wherein, the solar energy Heat collector 19 is connected with the entrance of heat dump 20, and the outlet of heat dump 20 is divided into two branches, and a branch passes through second throttle 21 are connected with the cycle fluid entrance of the second heat exchanger 22, cycle fluid outlet and the high-temperature heat-storage tank 24 of the second heat exchanger 22 Entrance is connected;Another branch is connected by third throttle valve 23 with the entrance of high-temperature heat-storage tank 24, the outlet of high-temperature heat-storage tank 24 It is connected with the high temperature side fluid inlet of third heat exchanger 25, high temperature side fluid outlet and the low temperature heat storage can 26 of third heat exchanger 25 Entrance be connected, the outlet of low temperature heat storage can 26 is connected with another entrance of heat dump 20.It is acquired using solar thermal collector 19 Luminous energy is pooled in heat dump 20 and is converted into thermal energy by solar energy, in solar energy abundance, closes second throttle 21, opens Third throttle valve 23 is opened, heat is exported from the outlet of heat dump 20 using the cycle fluid of collecting system as carrier, throttled through third Valve 23 enters from the entrance of high-temperature heat-storage tank 24;In solar energy scarcity, third throttle valve 23 is closed, opens second throttle 21, using the exhaust gas that gas turbine 14 is discharged as the heat source of the second heat exchanger 22, cycle fluid is exported from the outlet of heat dump 20, Enter from the cycle fluid entrance of the second heat exchanger 22 through second throttle 21 and exchange heat, by the second heat exchanger 22 after heat exchange Cycle fluid outlet outflow, enters from the entrance of high-temperature heat-storage tank 24.Heat enters accumulation of heat in high-temperature heat-storage tank 24, stable heat It can be exported from the outlet of high-temperature heat-storage tank 24, enter from the high temperature side fluid inlet of third heat exchanger 25, third heat exchanger is provided 25 calorific requirements, the working medium after heat exchange is flowed out from the high temperature side fluid outlet of third heat exchanger 25, by entering for low temperature heat storage can 26 Mouth enters and stores waste heat, and working medium is flowed out by the outlet of low temperature heat storage can 26, entered from another entrance of heat dump 20, completes one A cycle;
The seawater source heat pump system includes seawater water source 1, water pump 2, the 5th throttle valve 3, the compression of evaporator 4, first Machine 5, condenser 6, throttling set 7, the first heat storage can 8 and First Heat Exchanger 9.Seawater water source 1 is connected with the entrance of water pump 2, water The 5th throttle valve 3 of outlet of pump 2 is connected with evaporator 4, and the outlet of evaporator 4 is connected with the entrance of the first compressor 5, and first The outlet of compressor 5 is connected with the entrance of condenser 6, and the outlet of condenser 6 is connected with the entrance of throttling set 7, throttling set 7 Outlet be connected with the entrance of evaporator 4, form the working cycles of heat pump, i.e., water resource heat pump structure is compressed by evaporator 4, first Machine 5, condenser 6 and throttling set 7 are constituted.Condenser 6 is connected with the entrance of the first heat storage can 8, the outlet of the first heat storage can 8 with The high temperature side fluid inlet of First Heat Exchanger 9 is connected, the height of the high temperature side fluid outlet and the 5th heat exchanger 11 of First Heat Exchanger 9 Warm side liquid entrance is connected, and the high temperature side fluid outlet of the 5th heat exchanger 11 is connected with the entrance of the first heat storage can 8.Pass through water pump 2 pumping seawater, seawater enter water source heat pump system for supplying low grade heat energy through the 5th throttle valve 3, are adjusted by the 5th throttle valve 3 Seawater flow is controlled, seawater transfers heat to evaporator 4, so that the liquid refrigerant of the low-temp low-pressure in evaporator 4 is absorbed heat and gasify It is flowed out from the outlet of evaporator 4 for high-temperature low-pressure gas, high-temperature low-pressure gas enters from the entrance of the first compressor 5, compressed It flows out from the outlet of the first compressor 5 as high temperature and high pressure gas, enters from the entrance of condenser 6, it is condensed to become low temperature height Press liquid is flowed out from the outlet of condenser 6, and the heat for condensing releasing is inputted by the entrance of the first heat storage can 8, condensed low temperature Highly pressurised liquid enters from the entrance of throttling set 7, and become low temperature and low pressure liquid by throttling flows out from the outlet of throttling set 7, It is flowed into from the entrance of evaporator 4, completes the working cycles of a heat pump.Stable heat is entered by the outlet of the first heat storage can 8 The high temperature side fluid inlet of First Heat Exchanger 9 provides First Heat Exchanger 9 calorific requirements, and the waste heat after heat exchange is from First Heat Exchanger 9 High temperature side fluid outlet enter the high temperature side fluid inlet of the 5th heat exchanger 11, the cascade utilization of waste heat is realized, later by the The high temperature side fluid outlet of five heat exchangers 11 flows out, and is entered by the entrance of the first heat storage can 8;
The gas turbine generating system includes fuel storage tank 10, the 5th heat exchanger 11, the second compressor 12, burning Device 13, combustion gas turbine 14, gas turbine powered generator 15, the 4th throttle valve 16, first throttle valve 17 and the 4th heat exchanger 18.Second Compressor 12 is equipped with air intake, and the outlet of the second compressor 12 is connected with the gas access of burner 13, on burner 13 Equipped with fuel inlet, the outlet of fuel storage tank 10 is connected with the fuel inlet of the 5th heat exchanger 11, the combustion of the 5th heat exchanger 11 Material outlet is connected with the fuel inlet of burner 13, and the outlet of burner 13 is connected with the entrance of combustion gas turbine 14, combustion gas turbine 14 outlet is divided into two branches, and a branch is connected by the 4th throttle valve 16 with the exhaust gas entrance of the second heat exchanger 22;It is another Branch is connected by first throttle valve 17 with the high temperature side fluid inlet of the 4th heat exchanger 18, and combustion gas turbine 14 passes through shafting and combustion Gas-turbine generator 15 is connected, and gas turbine powered generator 15 is driven to generate electricity.Air by the air intake on the second compressor 12 into Enter and compressed, compressed air is flowed out by the outlet of the second compressor 12, is entered from the air intake of burner 13, combustion Material is flowed out from the fuel outlet of fuel storage tank 10, is entered from the fuel inlet of the 5th heat exchanger 11 and is exchanged heat, after preheating Fuel is flowed out from the fuel outlet of the 5th heat exchanger 11, is entered by the fuel inlet of burner 13, fuel is being fired with compressed air Burning in burner 13, high-temperature fuel gas are flowed out by the outlet of burner 13, are entered by the entrance of combustion gas turbine 14, and in combustion gas turbine Expansion work in 14, by exporting electric energy by the gas turbine powered generator 15 of coupling of shaft system, the exhaust gas after acting is in combustion gas turbine 14 exit is divided into two branches:1) in solar energy abundance, the 4th throttle valve 16 is closed, opens first throttle valve 17, is given up Gas enters through first throttle valve 17 from the high temperature side fluid inlet of the 4th heat exchanger 18, and required heat is provided for the 4th heat exchanger 18 It measures, waste gas outlet is provided on the 4th heat exchanger 18, exhaust gas is discharged by waste gas outlet after UTILIZATION OF VESIDUAL HEAT IN, realizes the step profit of the energy With the 4th heat exchanger 18 is equipped with cold water inlet, and cold water is entered after 18 draw heat of the 4th heat exchanger by cold water inlet by hot water Outlet outflow, supplies hot water peculiar to vessel;2) in solar energy scarcity, first throttle valve 17 is closed, opens the 4th throttle valve 16, exhaust gas Enter from the exhaust gas entrance of the second heat exchanger 22 through the 4th throttle valve 16, institute's calorific requirement is provided to make up too for the second heat exchanger 22 It is positive can heat supply deficiency, be provided with waste gas outlet on the second heat exchanger 22, exhaust gas is discharged by waste gas outlet after UTILIZATION OF VESIDUAL HEAT IN, Realize the cascade utilization of the energy;
The described supercritical carbon dioxide recompression Brayton cycle electricity generation system include supercritical carbon dioxide turbine 27, Generator 28, high temperature regenerator 29, cryogenic regenerator 30, cooler 31, main compressor 32, recompression machine 33, First Heat Exchanger 9 With third heat exchanger 25.The cycle fluid entrance of First Heat Exchanger 9 is connected with the low temperature side fluid outlet of high temperature regenerator 29, the The cycle fluid outlet of one heat exchanger 9 is connected with the cycle fluid entrance of third heat exchanger 25, the circulation industrial of third heat exchanger 25 Matter outlet is connected with the entrance of supercritical carbon dioxide turbine 27, outlet and the high temperature regenerator of supercritical carbon dioxide turbine 27 29 high temperature side fluid inlet is connected, and supercritical carbon dioxide turbine 27 is connected by shafting with generator 28, drives generator 28 power generations;The high temperature side fluid outlet of high temperature regenerator 29 is connected with the high temperature side fluid inlet of cryogenic regenerator 30, and low temperature returns The high temperature side fluid outlet working medium of hot device 30 shunts, and enters all the way from the entrance of cooler 31, the outlet of cooler 31 and master The entrance of compressor 32 is connected, and the outlet of main compressor 32 is connected with the low temperature side fluid inlet of cryogenic regenerator 30, and low temperature returns The low temperature side fluid outlet of hot device 30 is connected with the low temperature side fluid inlet of high temperature regenerator 29;Another way is from recompression machine 33 Entrance enters, and the outlet of recompression machine 33 is connected with the low temperature side fluid inlet of high temperature regenerator 29.In supercritical carbon dioxide It recompressing in Brayton Cycle system, working medium supercritical carbon dioxide is flowed out from the low temperature side fluid outlet of high temperature regenerator 29, Entered by the cycle fluid entrance of First Heat Exchanger 9, working medium exchanges heat after carrying out first time heat exchange in First Heat Exchanger 9 from first The cycle fluid outlet outflow of device 9,9 calorific requirements of First Heat Exchanger are provided by seawater source heat pump system, and working medium is exchanged heat by third The cycle fluid entrance of device 25 enters, and carries out the circulation industrial from third heat exchanger 25 after exchanging heat in third heat exchanger 25 second Matter outlet outflow, the heat of third heat exchanger 25 are provided by solar thermal collection system, and working medium is by supercritical carbon dioxide turbine 27 Entrance enter and expansion work wherein, drive the output electric energy of generator 28, working medium is by supercritical carbon dioxide turbine later 27 outlet outflow, is entered by the high temperature side fluid inlet of high temperature regenerator 29 and is carried out backheat, then by high temperature regenerator 29 High temperature side fluid outlet flows out, and into the high temperature side fluid inlet of cryogenic regenerator 30, backheat is carried out in cryogenic regenerator 30, Later, working medium is flowed out by the high temperature side fluid outlet of cryogenic regenerator 30, is divided into two-way here:1) one it route cooler 31 Entrance enters, and the inlet temperature requirements of main compressor 32 are cooled in cooler 31, and working medium is from the outlet of cooler 31 later Outflow is entered by the entrance of main compressor 32, is flowed out after compression by the outlet of main compressor 32, by the low of cryogenic regenerator 30 Warm side liquid entrance inflow is preheated, then is flowed out by the low temperature side fluid outlet of cryogenic regenerator 30;2) another way directly by Recompression machine 33 entrance inflow is compressed, later by the outlet of recompression machine 33 be discharged, with 1) in by cryogenic regenerator 30 The working medium of low temperature side fluid outlet outflow converge, this two parts working medium temperature and pressure having the same at this time, after converging Working medium is entered by the low temperature side fluid inlet of high temperature regenerator 29, is preheated again in high temperature regenerator 29, after preheating Working medium is flowed out by the low temperature side fluid outlet of high temperature regenerator 29, enters heat absorption by the cycle fluid entrance of First Heat Exchanger 9, complete At closed cycle.
When entire combined generating system work, using clean energy resource solar energy, abundant Ocean thermal energy is contained in exploitation, is recycled System institute calorific requirement is provided using the waste heat after the exhaust gas of combustion gas turbine discharge, heat exchange, realizes the cascade utilization and synthesis of the energy It utilizes, stable joint hair is realized in conjunction with gas turbine generating system and supercritical carbon dioxide recompression Brayton Cycle system Electricity, generated electric energy finally enter network of ship.

Claims (10)

1. solar energy, sea water source heat pump, combustion gas and supercritical carbon dioxide combined marine electricity generation system, which is characterized in that including Solar thermal collection system, seawater source heat pump system, gas turbine generating system and supercritical carbon dioxide recompression Bretton follow Ring electricity generation system, wherein
The solar thermal collection system includes solar thermal collector, heat dump, second throttle, the second heat exchanger, third section Flow valve, high-temperature heat-storage tank, third heat exchanger and low temperature heat storage can;
The seawater source heat pump system include seawater water source, water pump, evaporator, the first compressor, condenser, throttling set, First heat storage can and First Heat Exchanger;
The gas turbine generating system includes that fuel storage tank, the 5th heat exchanger, the second compressor, burner, combustion gas are saturating Flat, gas turbine powered generator, the 4th throttle valve, first throttle valve and the 4th heat exchanger;
The supercritical carbon dioxide recompression Brayton cycle electricity generation system includes supercritical carbon dioxide turbine, power generation Machine, high temperature regenerator, cryogenic regenerator, cooler, main compressor, recompression machine, First Heat Exchanger and third heat exchanger;
Solar thermal collector is connected with the entrance of heat dump, and the outlet of heat dump is divided into two branches, and a branch is through the second throttling Valve is connected with the cycle fluid entrance of the second heat exchanger, the entrance phase of the cycle fluid outlet and high-temperature heat-storage tank of the second heat exchanger Even;Another branch is connected through third throttle valve with the entrance of high-temperature heat-storage tank, outlet and the third heat exchanger of high-temperature heat-storage tank High temperature side fluid inlet is connected, and the high temperature side fluid outlet of third heat exchanger is connected with the entrance of low temperature heat storage can, low temperature heat accumulation The outlet of tank is connected with another entrance of heat dump;
The entrance of seawater water source and water pump connects, and the outlet of water pump is connected with the entrance of evaporator, the outlet of evaporator and first The entrance of compressor is connected, and the outlet of the first compressor is connected with the entrance of condenser, the entrance of condenser and the first heat storage can It is connected, the outlet of condenser is connected with the entrance of throttling set, and the outlet of throttling set is connected with the entrance of evaporator, forms heat The working cycles of pump, the outlet of the first heat storage can are connected with the high temperature side fluid inlet of First Heat Exchanger, the height of First Heat Exchanger Warm side liquid outlet is connected with the high temperature side fluid inlet of the 5th heat exchanger, the high temperature side fluid outlet and first of the 5th heat exchanger The entrance of heat storage can is connected;
Second compressor is equipped with air intake, and the outlet of the second compressor is connected with the gas access of burner, on burner Equipped with fuel inlet, the outlet of fuel storage tank is connected with the fuel inlet of the 5th heat exchanger, the fuel outlet of the 5th heat exchanger It is connected with the fuel inlet of burner, the outlet of burner is connected with the entrance of combustion gas turbine, and the outlet of combustion gas turbine is divided into two A branch, a branch are connected by the 4th throttle valve with the exhaust gas entrance of the second heat exchanger;Another branch passes through first throttle valve It is connected with the high temperature side fluid inlet of the 4th heat exchanger;Combustion gas turbine is connected by shafting with gas turbine powered generator, and combustion is driven Gas-turbine electrical power generators;
The cycle fluid entrance of First Heat Exchanger is connected with the low temperature side fluid outlet of high temperature regenerator, the cycle of First Heat Exchanger Sender property outlet is connected with the cycle fluid entrance of third heat exchanger, cycle fluid outlet and the overcritical titanium dioxide of third heat exchanger The entrance of carbon turbine is connected, and the outlet of supercritical carbon dioxide turbine is connected with the high temperature side fluid inlet of high temperature regenerator, surpasses Critical carbon dioxide turbine is connected by shafting with generator, and electrical power generators are driven;The high temperature side liquid of high temperature regenerator goes out Mouth is connected with the high temperature side fluid inlet of cryogenic regenerator, the high temperature side fluid outlet working medium shunting of cryogenic regenerator, all the way Enter from the entrance of cooler, the outlet of cooler is connected with the entrance of main compressor, outlet and the low temperature backheat of main compressor The low temperature side fluid inlet of device is connected, the low temperature side fluid outlet of cryogenic regenerator and the low temperature side fluid inlet of high temperature regenerator It is connected;Another way enters from the entrance of recompression machine, recompresses the outlet of machine and the low temperature side fluid inlet phase of high temperature regenerator Even.
2. solar energy according to claim 1, sea water source heat pump, combustion gas and supercritical carbon dioxide combined marine power generation system System, which is characterized in that the supercritical carbon dioxide recompression Brayton cycle electricity generation system selects supercritical carbon dioxide As working medium, and utilize solar energy heating working medium supercritical carbon dioxide.
3. solar energy according to claim 2, sea water source heat pump, combustion gas and supercritical carbon dioxide combined marine power generation system System, which is characterized in that Ocean thermal energy is acquired using water resource heat pump, is used for heating working medium supercritical carbon dioxide.
4. solar energy according to claim 2, sea water source heat pump, combustion gas and supercritical carbon dioxide combined marine power generation system System, which is characterized in that utilize discharge of gas turbine waste gas residual heat heating working medium supercritical carbon dioxide, ensure solar energy not Certain heat is provided when sufficient, and realizes the cascade utilization of the energy.
5. solar energy according to claim 1, sea water source heat pump, combustion gas and supercritical carbon dioxide combined marine power generation system System, which is characterized in that the supercritical carbon dioxide recompression Brayton cycle electricity generation system is provided with shunting recompression and follows Ring.
6. solar energy according to claim 1, sea water source heat pump, combustion gas and supercritical carbon dioxide combined marine power generation system System, which is characterized in that provide hot water peculiar to vessel using the waste gas residual heat of discharge of gas turbine, realize the cascade utilization of the energy.
7. solar energy according to claim 1, sea water source heat pump, combustion gas and supercritical carbon dioxide combined marine power generation system System, which is characterized in that using the waste heat of the extracted heat of water resource heat pump to fuel preheating.
8. solar energy according to claim 1, sea water source heat pump, combustion gas and supercritical carbon dioxide combined marine power generation system System, which is characterized in that outlet is provided on the second heat exchanger so that the exhaust gas after UTILIZATION OF VESIDUAL HEAT IN is discharged.
9. solar energy according to claim 1, sea water source heat pump, combustion gas and supercritical carbon dioxide combined marine power generation system System, which is characterized in that outlet is provided on the 4th heat exchanger so that the exhaust gas after UTILIZATION OF VESIDUAL HEAT IN is discharged.
10. solar energy according to claim 1, sea water source heat pump, combustion gas and the power generation of supercritical carbon dioxide combined marine System, which is characterized in that the seawater source heat pump system includes the 5th throttle valve, is connected between water pump and evaporator, To adjust seawater flow.
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