CN111561363B - Transcritical CO 2 Heat pump energy storage system driven by power generation - Google Patents
Transcritical CO 2 Heat pump energy storage system driven by power generation Download PDFInfo
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- CN111561363B CN111561363B CN202010354890.1A CN202010354890A CN111561363B CN 111561363 B CN111561363 B CN 111561363B CN 202010354890 A CN202010354890 A CN 202010354890A CN 111561363 B CN111561363 B CN 111561363B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam 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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/32—Steam 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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines using steam of critical or overcritical pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/08—Adaptations for driving, or combinations with, pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants 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
- F01K25/10—Plants 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
- F01K25/103—Carbon dioxide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
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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
- F25B27/00—Machines, plants or systems, using particular sources of energy
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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
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Abstract
The invention provides a trans-critical CO 2 A power generation driven heat pump energy storage system comprising: the solar energy collecting component comprises a solar heat collector for collecting solar energy, an oil storage tank and an oil pump, wherein the oil storage tank and the oil pump are in circulating connection with the solar heat collector through pipelines; trans critical CO 2 The power generation driving assembly comprises a first evaporator, a turbo expander, a heat regenerator, a condenser, a working medium pump and a second evaporator, wherein the first evaporator is internally provided with a pipeline; and the heat pump energy storage assembly comprises a compressor connected with the turbo expander, a gas cooler connected with the compressor, a heat storage tank connected with the gas cooler, a third evaporator connected with the compressor, a cold storage tank connected with the third evaporator, an ejector connected with the gas cooler and the third evaporator and a gas-liquid separator connected with the ejector.
Description
Technical Field
The invention belongs to the technical field of new energy power generation and energy storage, and particularly relates to transcritical CO 2 And the heat pump energy storage system is driven by power generation.
Background
Dual mode transcritical CO in the prior art 2 The heat pump energy storage system can improve the performance efficiency of a heat pump and can greatly improve the permeability of renewable energy in a comprehensive energy system. But the electricity consumption of the heat pump is still from the power grid, the electric energy source is too single and the traditional method is usedThe coal-fired electric energy is not beneficial to environmental protection. The low-grade energy is used for generating power to drive a compressor in the heat pump energy storage system to do work, and energy conservation and environmental protection are facilitated.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a transcritical CO 2 And a heat pump energy storage system driven by power generation.
The invention provides a trans-critical CO 2 An electric power generation driven heat pump energy storage system having features comprising: the solar energy collecting assembly comprises a solar heat collector for collecting solar energy, an oil storage tank and an oil pump, wherein the oil storage tank and the oil pump are in circulating connection with the solar heat collector through pipelines; trans critical CO 2 The power generation driving assembly comprises a first evaporator, a turbo expander, a heat regenerator, a condenser, a working medium pump and a second evaporator, wherein the first evaporator is internally provided with a pipeline; and the heat pump energy storage assembly comprises a compressor connected with the turboexpander, a gas cooler connected with the compressor, a heat storage tank connected with the gas cooler, a third evaporator connected with the compressor, a cold storage tank connected with the third evaporator, an ejector connected with the gas cooler and connected with the third evaporator and a gas-liquid separator connected with the ejector, wherein a heat regenerator is further connected between the working medium pump and the second evaporator, the solar heat collector, the oil storage tank and the oil pump form a first circulation subsystem, a circulation medium in the first circulation subsystem is heat conduction oil, the heat conduction oil in the pipeline is heated by collecting solar heat through the solar heat collector, the first evaporator, the turboexpander, the heat regenerator, the condenser, the working medium pump and the second evaporator form a second circulation subsystem, and the circulation medium in the second circulation subsystem is CO 2 CO is introduced via the first evaporator or the second evaporator 2 Heating to high temperature supercritical CO 2 The working medium pushes the turbo expander to do work, a first evaporator inlet pneumatic door is arranged between the second evaporator and the first evaporator, a pneumatic door and a pneumatic adjusting valve are arranged between the first evaporator and the turbo expander, and the opening degree of the pneumatic adjusting valve is controlledThe size of the branch is used for adjusting the flow of fluid, so that the output of a turbo expander and a compressor is adjusted, a branch is further arranged in the second circulation subsystem, one end of the branch is connected between the second evaporator and the inlet pneumatic door of the first evaporator, one end of the branch is connected between the first evaporator and the pneumatic door, a bypass pneumatic door of the first evaporator is further arranged in the branch, the compressor, the gas cooler, the third evaporator, the ejector and the gas-liquid separator form a third circulation subsystem, and a circulation medium in the third circulation subsystem is CO 2 The compressor is driven by the turboexpander to do work to CO 2 Heating and pressurizing are carried out, and CO after heating and pressurizing is carried out 2 Enters a gas cooler to exchange heat with a heat storage medium to store heat, and then CO 2 Cooling, discharging, introducing into gas-liquid separator via ejector for gas-liquid separation to obtain gaseous CO 2 Entering a compressor, liquid CO 2 The heat in the air is absorbed by the third evaporator and converted into gas state, and then the gas state is injected back to the injector to form circulation, the heat is stored in the heat storage tank, and the cold in the third evaporator is stored in the cold storage tank.
The trans-critical CO provided by the invention 2 In the heat pump energy storage system driven by power generation, the following characteristics can be provided: wherein, the oil storage tank still is connected with the manual secondary door of oiling that is used for pouring into the conduction oil and the manual secondary door of oiling that is connected with the manual primary door of oiling, and the oil storage tank still is connected with the oil storage tank blowdown secondary door that is used for the blowdown and is connected with the oil storage tank blowdown primary door of oil storage tank blowdown.
In the transcritical CO provided by the invention 2 In the heat pump energy storage system driven by power generation, the following characteristics can be provided: wherein, still be connected with the pipeline gassing secondary door that is used for the pipeline gassing primary door of exhaust and is connected with pipeline gassing primary door in the pipeline between oil pump and the solar collector.
In the transcritical CO provided by the invention 2 The heat pump energy storage system driven by power generation can also have the following characteristics: wherein the second circulation subsystem performs complementary power generation by using solar energy, wind energy, geothermal energy, nuclear energy, industrial waste heat or fossil fuel.
The trans-critical CO provided by the invention 2 The heat pump energy storage system driven by power generation can also have the following characteristics: the shaft of the turboexpander is connected with the shaft of the compressor, so that the turboexpander drives the compressor to do work when doing work.
In the transcritical CO provided by the invention 2 In the heat pump energy storage system driven by power generation, the following characteristics can be provided: the second evaporator is connected with a standby heat source, when the solar heat is insufficient, whether the temperature of the standby heat source meets the requirement of system operation is checked, when the temperature meets the requirement, the inlet pneumatic door of the first evaporator is closed, the bypass pneumatic door of the first evaporator is opened, the standby heat source is put into operation, and when the temperature does not meet the requirement, the standby heat source is prohibited to be started.
Action and effects of the invention
According to the invention, the trans-critical CO 2 The heat pump energy storage system driven by power generation can drive the compressor by adopting solar energy, wind energy, geothermal energy, nuclear energy, industrial waste heat or ore fuel to perform complementary power generation, so that the traditional coal-fired electric energy can be saved, the combined supply of cold, heat and power of renewable energy sources can be realized, the permeability of intermittent renewable energy sources in a comprehensive energy system can be improved, and the environment friendliness is facilitated; the cold storage tank and the heat storage tank are arranged for storing cold and heat, so that the requirement of intermittent cold and heat supply can be met, the efficiency is high, and the flexibility is good; the compressor is driven to work through the turboexpander, so that electric energy can be saved more than that of the compressor driven by a direct motor, and COP of the heat pump energy storage system can be effectively improved; because in CO 2 The pneumatic valve and the pneumatic adjusting valve are arranged before the working medium enters the turbo expander, so that the flow of the fluid can be adjusted by controlling the opening degree of the pneumatic adjusting valve, and the output of the turbo expander and the compressor can be simply and conveniently changed.
Drawings
FIG. 1 is a transcritical CO embodiment of the present invention 2 The structure schematic diagram of the heat pump energy storage system driven by power generation.
Detailed Description
In order to make the technical means and functions of the present invention easy to understand, the present invention is specifically described below with reference to the embodiments and the accompanying drawings.
The present example provides a transcritical CO 2 The heat pump energy storage system driven by power generation comprises a solar energy collecting component and transcritical CO 2 The heat pump energy storage device comprises a power generation driving assembly and a heat pump energy storage assembly.
The solar energy collecting assembly comprises a solar heat collector 11 for collecting solar energy, an oil storage tank 12 and an oil pump 13, wherein the oil storage tank is in circulating connection with the solar heat collector 11 through a pipeline.
The oil storage tank 12 is further connected with an oil injection manual primary door 121 for injecting heat transfer oil and an oil injection manual secondary door 122 connected with the oil injection manual primary door 121,
the oil storage tank 12 is also connected with an oil storage tank blowdown primary door 123 for blowdown and an oil storage tank blowdown secondary door 124 connected with the oil storage tank blowdown primary door 123.
A pipeline air bleeding primary door 14 for exhausting air and a pipeline air bleeding secondary door 15 connected with the pipeline air bleeding primary door 14 are also connected in a pipeline between the oil pump 13 and the solar collector 11.
Transcritical CO 2 The power generation driving assembly comprises a first evaporator 21, a turbine expander 22, a heat regenerator 23, a condenser 24, a working medium pump 25 and a second evaporator 26, wherein the first evaporator 21 is internally provided with a pipeline, the turbine expander 22 is connected with the first evaporator 21, the heat regenerator 23 is connected with the turbine expander 22, the condenser 24 is connected with the heat regenerator, the working medium pump 25 is connected with the condenser 24, and the second evaporator 26 is connected with the working medium pump 25.
A regenerator 23 is connected between the working medium pump 25 and the second evaporator 26.
The heat pump energy storage assembly includes a compressor 31 connected to the turboexpander 22, a gas cooler 32 connected to the compressor 31, a heat storage tank 33 connected to the gas cooler 32, a third evaporator 34 connected to the compressor 31, a heat storage tank 35 connected to the third evaporator 34, an ejector 36 connected to the gas cooler 32 and to the third evaporator 34, and a gas-liquid separator 37 connected to the ejector 36.
The shaft of turboexpander 22 is connected to the shaft of compressor 31 so that turboexpander 22, when it does work, drives compressor 31 to do work.
The solar heat collector 11, the oil storage tank 12 and the oil pump 13 form a first circulation subsystem, a circulation medium in the first circulation subsystem is heat conduction oil, and the heat conduction oil in the pipeline is heated by collecting solar heat through the solar heat collector 11.
The first evaporator 21, the turboexpander 22, the heat regenerator 23, the condenser 24, the working medium pump 25 and the second evaporator 26 form a second circulation subsystem, and a circulation medium in the second circulation subsystem is CO 2 CO is introduced via the first evaporator 21 or the second evaporator 26 2 Heating to high temperature supercritical CO 2 The working fluid pushes turboexpander 22 to do work,
a first evaporator inlet airlock 211 is also provided between the second evaporator 26 and the first evaporator 21,
an air valve 27 and an air damper 28 are further provided between the first evaporator 21 and the turbo expander 22,
the fluid flow is adjusted by controlling the opening of the pneumatic control valve 28, so as to adjust the output of the turbo expander 22 and the compressor 31,
the second circulation subsystem is also provided with a branch, one end of the branch is connected between the second evaporator 26 and the first evaporator inlet pneumatic door 211, one end of the branch is connected between the first evaporator 21 and the pneumatic door 27, and the branch is also provided with a first evaporator bypass pneumatic door 29.
The second evaporator 26 is connected with a backup heat source 261, and when the solar heat is insufficient, it is checked whether the temperature of the backup heat source 261 satisfies the system operation, and when the temperature is satisfied, the first evaporator inlet pneumatic door 211 is closed and the first evaporator bypass pneumatic door 29 is opened to put the backup heat source 261 into operation, and when the temperature is not satisfied, the backup heat source 261 is prohibited from being activated.
The second circulation subsystem, which may also be a brayton cycle system or a rankine cycle system, performs complementary power generation by using solar energy, wind energy, geothermal energy, nuclear energy, industrial waste heat, or fossil fuel.
The compressor 31, the gas cooler 32, the third evaporator 34, the ejector 36, and the gas-liquid separator 37 constitute a third cycleThe circulating medium in the subsystem and the third circulating subsystem is CO 2 Compressor 31 is driven by turboexpander 22 to perform work on CO 2 Heating and pressurizing are carried out, and CO after heating and pressurizing is carried out 2 Enters the gas cooler 32 to exchange heat with a heat storage medium to store heat, and then CO 2 Cooling, discharging, introducing into gas-liquid separator 37 via ejector 36 for gas-liquid separation to obtain gaseous CO 2 Entering the compressor 31, liquid CO 2 The heat in the air is absorbed by the third evaporator 34 and changed into gas state, and then the gas state is ejected to the ejector 36 to form a cycle, the heat is stored in the heat storage tank 33, and the cold in the third evaporator 34 is stored in the cold storage tank 35.
Transcritical CO in this example 2 The operation of the heat pump energy storage system 100 driven by power generation is as follows:
firstly, in the first circulation subsystem, the solar energy collection assembly is subjected to oil injection and air exhaust, the oil storage tank sewage discharge primary door 123 and the oil storage tank sewage discharge secondary door 124 are closed, the pipeline air-bleeding primary door 14 and the pipeline air-bleeding secondary door 15 are opened, the oil injection manual primary door 121 and the oil injection manual secondary door 122 are opened, after the pipeline air-bleeding primary door 14 and the pipeline air-bleeding secondary door 15 see oil, the pipeline air-bleeding secondary door 15 and the pipeline air-bleeding primary door 14 are closed in sequence, the oil pump 13 is started, and the operation condition of the solar energy collection assembly is checked.
Secondly, in the second circulation subsystem, when the temperature of the heat transfer oil in the solar energy collection assembly meets the requirement, the bypass pneumatic door 29 of the first evaporator is closed, the inlet pneumatic door 211 of the first evaporator is opened, the pneumatic door 27 is opened, and the heat transfer oil passes through the second evaporator 26 to circulate the medium CO 2 Heating to high temperature supercritical CO 2 Working fluid, then CO at high temperature and high pressure 2 The working medium enters the turbo expander to do work, so that the compressor 31 is driven to do work. The exhaust gas after the work done by the turbo expander 22 enters the heat regenerator 23 to release heat, and then enters the condenser 24 to be cooled, so as to become low-temperature low-pressure CO 2 Low temperature and low pressure CO 2 The working medium is pressurized into high-pressure supercritical CO by the working medium pump 25 2 Working medium enters a heat regenerator 23 to recover the heat of the exhaust gas so as to further raise the temperature, and finally enters a second evaporator 26 to form a cycle to circulateThe fluid flow can be adjusted by controlling the opening of the pneumatic control valve 28, so as to change the output of the turboexpander 22 and the compressor 31.
Finally, in the third circulation sub-system, CO 2 The working medium enters the compressor 31, the temperature and the pressure are increased, and then the working medium enters the gas cooler 32 to exchange heat with water to form hot water which is stored in the heat storage tank 33; CO after passing through a gas cooler 32 2 The working medium is cooled and discharged, enters an ejector 36, and then gas-liquid two-phase CO 2 The working medium enters a gas-liquid separator 37 and gaseous CO 2 Working medium enters the compressor 31 and liquid CO 2 The working medium enters the third evaporator 34 to absorb heat in the air and change the heat into a gas state, and finally the gas state is ejected back to the ejector 36 to form circulation, and cold water in the third evaporator 34 is stored in the cold storage tank 35.
Effects and effects of the embodiments
A transcritical CO according to the present embodiment 2 The heat pump energy storage system driven by power generation can drive the compressor by adopting solar energy, wind energy, geothermal energy, nuclear energy, industrial waste heat or ore fuel to perform complementary power generation, so that the traditional coal-fired electric energy can be saved, the combined supply of cold, heat and power of renewable energy sources can be realized, the permeability of intermittent renewable energy sources in a comprehensive energy system can be improved, and the environment friendliness is facilitated; the cold storage tank and the heat storage tank are arranged for storing cold and heat, so that the requirement of intermittent cold and heat supply can be met, the efficiency is high, and the flexibility is good; because the compressor is driven to work through the turbo expander, electric energy can be saved more than the compressor is driven by a direct motor, and COP of the heat pump energy storage system can be effectively improved; because in CO 2 The pneumatic valve and the pneumatic adjusting valve are arranged before the working medium enters the turbo expander, so that the flow of the fluid can be adjusted by controlling the opening degree of the pneumatic adjusting valve, and the output of the turbo expander and the compressor can be simply and conveniently changed.
The above embodiments are preferred examples of the present invention, and are not intended to limit the scope of the present invention.
Claims (1)
1. Transcritical CO 2 Expander driven heat pump energy storage system, andcharacterized in that it comprises:
the solar energy collecting assembly comprises a solar heat collector for collecting solar energy, an oil storage tank and an oil pump, wherein the oil storage tank and the oil pump are in circulating connection with the solar heat collector through pipelines;
transcritical CO 2 The expander driving assembly comprises a first evaporator, a turbine expander, a heat regenerator, a condenser, a working medium pump and a second evaporator, wherein the first evaporator is internally provided with the pipeline; and
the heat pump energy storage assembly comprises a compressor connected with the turboexpander, a gas cooler connected with the compressor, a heat storage tank connected with the gas cooler, a third evaporator connected with the compressor, a cold storage tank connected with the third evaporator, an ejector connected with the gas cooler and connected with the third evaporator and a gas-liquid separator connected with the ejector,
wherein the heat regenerator is connected between the working medium pump and the second evaporator,
the solar heat collector, the oil storage tank and the oil pump form a first circulation subsystem, the circulation medium in the first circulation subsystem is heat-conducting oil, the heat-conducting oil in the pipeline is heated by collecting solar heat through the solar heat collector,
the first evaporator, the turboexpander, the heat regenerator, the condenser, the working medium pump and the second evaporator form a second circulation subsystem, and a circulation medium in the second circulation subsystem is CO 2 CO is fed through the first evaporator or the second evaporator 2 Heating to high temperature supercritical CO 2 The working medium drives the turbine expansion machine to do work,
a first evaporator inlet pneumatic door is also arranged between the second evaporator and the first evaporator,
a pneumatic valve and a pneumatic adjusting valve are arranged between the first evaporator and the turbine expander, the flow rate of the fluid is adjusted by controlling the opening degree of the pneumatic adjusting valve, and the output of the turbine expander and the compressor is further adjusted,
the second circulation subsystem is also provided with a branch, one end of the branch is connected between the second evaporator and the inlet pneumatic door of the first evaporator, one end of the branch is connected between the first evaporator and the pneumatic door, the branch is also provided with a first evaporator bypass pneumatic door,
the compressor, the gas cooler, the third evaporator, the ejector and the gas-liquid separator constitute a third circulation subsystem, and a circulation medium in the third circulation subsystem is CO 2 Said compressor being driven by said turboexpander to perform work on CO 2 Heating and pressurizing, and heating and pressurizing CO 2 Enters the gas cooler to exchange heat with a heat storage medium to store heat, and then CO 2 Cooling and discharging, and allowing the gas-liquid separation to obtain gaseous CO 2 Entering the compressor, liquid CO 2 The heat in the air is absorbed by the third evaporator and changed into gas state, and then the gas is ejected back to the ejector to form circulation,
the heat is stored in the heat storage tank, the cold energy in the third evaporator is stored in the cold storage tank,
the oil storage tank is also connected with an oil injection manual primary door for injecting the heat conducting oil and an oil injection manual secondary door connected with the oil injection manual primary door,
the oil storage tank is also connected with an oil storage tank sewage disposal primary door for sewage disposal and an oil storage tank sewage disposal secondary door connected with the oil storage tank sewage disposal primary door,
a pipeline air-bleeding primary door for exhausting and a pipeline air-bleeding secondary door connected with the pipeline air-bleeding primary door are also connected in the pipeline between the oil pump and the solar heat collector,
the second circulation subsystem carries out complementary power generation by adopting solar energy, wind energy, geothermal energy, nuclear energy, industrial waste heat or ore fuel,
the shaft of the turbine expander is connected with the shaft of the compressor, so that the turbine expander drives the compressor to do work when doing work,
the second evaporator is connected with a standby heat source, when the solar heat is insufficient, whether the temperature of the standby heat source meets the requirement of system operation is checked, when the temperature meets the requirement, the first evaporator inlet pneumatic door is closed, the first evaporator bypass pneumatic door is opened, the standby heat source is put into operation, and when the temperature does not meet the requirement, the standby heat source is prohibited to be started.
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| CN112502925B (en) * | 2020-11-11 | 2022-07-01 | 中南大学 | Transcritical carbon dioxide power generation system and method driven by solar energy and geothermal energy in combined mode |
| CN112762424B (en) * | 2021-01-07 | 2022-10-18 | 中国船舶重工集团新能源有限责任公司 | Solar thermoelectric coupling system based on combination of heat storage and compression heat pump and operation method thereof |
| CN113036932B (en) * | 2021-02-26 | 2022-08-26 | 中国科学院力学研究所 | CO (carbon monoxide) 2 Transcritical thermodynamic cycle power storage system and method |
| CN113381443B (en) * | 2021-05-24 | 2022-11-11 | 中国能源建设集团山西省电力勘测设计院有限公司 | Working method of new energy power generation power grid load fluctuation compensation system |
| CN113958380B (en) * | 2021-09-22 | 2022-10-25 | 西安交通大学 | Transcritical carbon dioxide power generation system and method using gas-liquid separator and ejector |
| CN114128538A (en) * | 2021-10-27 | 2022-03-04 | 中国长江三峡集团有限公司 | Wind-light-geothermal integrated power generation and greenhouse heat energy supply system and method |
| CN114856738A (en) * | 2022-05-20 | 2022-08-05 | 西安交通大学 | Combined cooling heating and power energy storage system and method based on liquid carbon dioxide storage |
| CN114776411B (en) * | 2022-05-27 | 2023-05-05 | 华能国际电力股份有限公司 | Integrated heat storage coal-fired power generation system and working method |
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