CN115614121A - Hydrogen-based cold, heat and electricity triple supplies energy storage system - Google Patents

Hydrogen-based cold, heat and electricity triple supplies energy storage system Download PDF

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Publication number
CN115614121A
CN115614121A CN202211079546.1A CN202211079546A CN115614121A CN 115614121 A CN115614121 A CN 115614121A CN 202211079546 A CN202211079546 A CN 202211079546A CN 115614121 A CN115614121 A CN 115614121A
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hydrogen
power generation
heat
heat exchanger
storage tank
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钟崴
孙鹏
林小杰
吴燕玲
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Jiaxing Research Institute of Zhejiang University
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Jiaxing Research Institute of Zhejiang University
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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
    • F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/02—Hydrogen or oxygen
    • C25B1/04—Hydrogen or oxygen by electrolysis of water
    • 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
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants 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
    • F01K23/06—Plants 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
    • F01K23/10—Plants 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
    • 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
    • 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
    • F01K25/106—Ammonia
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • F22B1/1807—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines using the exhaust gases of combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
    • F22B33/18—Combinations of steam boilers with other apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
    • H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
    • H01M8/0656—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants by electrochemical means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2457—Grouping of fuel cells, e.g. stacking of fuel cells with both reactants being gaseous or vaporised

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electrochemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Fuel Cell (AREA)

Abstract

The invention discloses a hydrogen-based combined cooling heating and power energy storage system which comprises a hydrogen storage loop, a heat storage loop, a thermal power generation loop and a hydrogen-based combined cooling heating and power loop. The working process of the system comprises a hydrogen storage process, a heat storage process and a combined cooling heating and power supply process. The invention can consume electric energy to store hydrogen in the time period when the new energy generates sufficient output, and provide electric energy, heat energy and refrigeration in the time period when the energy is needed. The system can realize the function of peak shaving of the power grid, and reduce a large amount of abandoned wind and abandoned light caused by the sharp increase of the installed scale of the renewable unit; the power supply, steam supply and cold supply are realized for the life of residents and industrial production, the social life is guaranteed, the use of natural gas and fossil fuel is reduced, and the carbon emission is reduced.

Description

Hydrogen-based cold, heat and electricity triple supplies energy storage system
Technical Field
The invention relates to an energy storage and cold, heat and power combined supply system connected with a power grid, in particular to a hydrogen-based cold, heat and power combined supply energy storage system.
Background
Because of the importance of the international society on energy, climate and environment, the Chinese government has promised that the emission of carbon dioxide of unit GDP is reduced by 60-65% compared with 2005 by 2030. Under the background, renewable energy sources such as wind power and photoelectricity are developed on a larger scale in the future. However, renewable energy power generation such as wind power and photoelectric power generation has fluctuation, and the phenomena of wind abandon and light abandon are more serious due to large-scale development of new energy power generation, so that energy waste is caused, and difficulties are brought to power grid peak shaving. The hydrogen is produced by electrolyzing water by utilizing renewable power in a sufficient renewable power generation period, and then a large amount of electric energy is further consumed to cool and compress the hydrogen for storage, so that the hydrogen is an important energy storage method. However, the traditional utilization of hydrogen energy focuses on the utilization of substances of hydrogen gas, and the comprehensive application of internal cold quantity and pressure is lacked, so that the energy waste is caused. Meanwhile, multiple parameters in the industrial park are uneven, the discharge time is uncertain, the utilization is difficult, and a novel low-temperature heat storage technology needs to be developed. The traditional energy storage method can only supply electric energy to the outside generally, and cannot meet the complex cold, heat, electricity and gas energy consumption requirements of users. Therefore, the development of an energy storage system capable of comprehensively utilizing substances and energy in the hydrogen storage process to realize combined supply of heat, electricity and cold has important significance.
Disclosure of Invention
The invention aims to provide a hydrogen storage system capable of realizing combined supply of cooling, heating and power, so as to overcome the problems that the utilization efficiency of hydrogen energy is low and combined supply of cooling, heating and power cannot be realized in the prior art.
In order to achieve the above object, the present invention provides a hydrogen-based combined cooling, heating and power energy storage system, which includes a hydrogen storage loop, a thermal power generation loop, and a hydrogen-based combined cooling, heating and power loop.
The hydrogen storage loop comprises: a hydrogen production device, a hydrogen liquefaction device and a low-temperature hydrogen storage tank;
the hydrogen output of the hydrogen production device is connected with the inlet of the hydrogen liquefying device, and the outlet of the hydrogen liquefying device is connected with the inlet of the low-temperature hydrogen storage tank.
The heat storage circuit includes: a waste heat source, a heat storage tank; and a charging heat exchanger, a discharging heat exchanger and a phase change heat storage material are arranged in the heat storage tank.
The waste heat source and the charging heat exchanger in the heat storage tank are connected through a pipeline to form a loop, and a thermal working medium flow from the waste heat source is arranged in the loop.
The thermal power generation loop comprises a heat storage tank, a primary power generation device, a thermal working medium pump and a primary heat exchanger;
the outlet of the discharge heat exchanger of the heat storage tank is connected with the inlet of the power generation device, the outlet of the power generation device is connected with the inlet of the hot side of the primary heat exchanger, the outlet of the hot side of the primary heat exchanger is connected with the inlet of the hot working medium pump, and the outlet of the hot working medium pump is connected with the inlet of the discharge heat exchanger of the heat storage tank. All parts are connected through a thermal power generation pipeline, and a thermal power generation working medium is arranged in the pipeline.
The hydrogen-based combined cooling heating and power supply loop comprises a low-temperature hydrogen storage tank, a primary heat exchanger, a secondary power generation device, a secondary heat exchanger, a hydrogen fuel cell, a hydrogen-steam combined circulation system and a cooling device; wherein, a combustion hydrogen turbine, a waste heat boiler, a steam turbine power generation system and a steam extraction pipeline are arranged in the hydrogen-steam combined cycle system; wherein, a cold working medium and a cold working medium pump are arranged in the cold supply device;
the outlet of the low-temperature hydrogen storage tank is connected with the cold side inlet of the primary heat exchanger, the cold side outlet of the primary heat exchanger is connected with the secondary power generation device, the outlet of the secondary power generation device is connected with the cold side inlet of the secondary heat exchanger, the cold side outlet of the secondary heat exchanger is connected with the hydrogen fuel cell and the hydrogen-steam combined circulation system, and the hot side of the secondary heat exchanger is connected with the cooling device to form a loop.
The working process of the hydrogen-based combined cooling heating and power energy storage system comprises a hydrogen storage process, a heat storage process and a combined cooling heating and power process, wherein the three processes can be operated independently respectively.
The system can provide electric energy, heat energy and refrigeration to the outside according to different proportions by adjusting the power of each component in the primary power generation device, the secondary power generation device, the cooling device, the hydrogen fuel cell and the hydrogen-steam combined cycle system according to the requirements of users. Wherein the power of some components can be adjusted to zero as required.
The thermal power generation working medium in the thermal power generation loop is ammonia gas or CO 2 And working media are equal. The ultralow-temperature liquid hydrogen is adopted as a cold source in the thermal power generation loop, so that the thermal engine efficiency in the power generation process is improved.
The invention has the following beneficial effects:
in the time period of sufficient renewable power supply, the hydrogen storage process of the system works, the hydrogen production device consumes renewable electric energy to electrolyze water to produce hydrogen, and the hydrogen liquefaction device further consumes the renewable electric energy to cool and pressurize the hydrogen, so that the hydrogen storage is realized, and meanwhile, the high-efficiency electricity storage is realized. The heat storage process works in the time period of rich waste heat such as industrial waste heat, and the heat of the waste heat source is stored in the phase change heat storage material of the heat storage tank. The combined cooling heating and power supply process works in the peak load period, and the hydrogen energy is utilized by the secondary heat exchanger, the hydrogen fuel cell, the hydrogen-steam combined circulation system, the cooling device and the like to provide electric energy, heat energy and refrigeration to the outside simultaneously or respectively or according to different proportions according to the requirements of users. The system can store heat and hydrogen and also can provide cold, heat and electricity for the outside. The hydrogen storage process, the heat storage process and the combined cooling heating and power supply process of the system can respectively and independently operate, and the combined cooling heating and power supply process can provide electric energy, heat energy and refrigeration to the outside according to different proportions according to user requirements, so the system has the advantage of flexible operation. The system realizes cascade utilization of energy and substances in the hydrogen storage process through a plurality of devices and links, and recovers heat of the waste heat source through the heat storage tank, so that the system has the characteristics of capability of utilizing industrial waste heat, high energy storage efficiency, capability of simultaneously supplying electric energy, refrigeration and steam. Due to the characteristics, the system can realize the function of peak shaving of the power grid, and reduce a large amount of abandoned wind and abandoned light caused by the sharp increase of the installed scale of the renewable unit; the power supply, steam supply and cold supply are realized for the life of residents and industrial production, the social life is guaranteed, the use of natural gas and fossil fuel is reduced, and the carbon emission is reduced.
Drawings
Fig. 1 is a schematic diagram of a hydrogen-based combined cooling heating and power energy storage system according to the present invention. The system comprises a hydrogen production device 1, a hydrogen cooling device 2, a hydrogen compression device 3, a hydrogen liquefaction device 15, a low-temperature hydrogen storage tank 4, a primary heat exchanger 5, a hot working medium pump 6, a heat storage tank 7, a waste heat source 8, a primary power generation device 9, a secondary power generation device 10, a secondary heat exchanger 11, a cooling device 12, a hydrogen fuel cell 13 and a hydrogen-steam combined cycle system 14.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the hydrogen-based combined cooling, heating and power energy storage system of the present invention includes a hydrogen storage loop, a heat storage loop, a thermal power generation loop, and a hydrogen-based combined cooling, heating and power loop. The hydrogen storage circuit includes: a hydrogen production device 1, a hydrogen liquefaction device 15 and a low-temperature hydrogen storage tank 4; the hydrogen output of the hydrogen production device 1 is connected with the inlet of the hydrogen liquefying device 15, and the outlet of the hydrogen liquefying device 15 is connected with the inlet of the low-temperature hydrogen storage tank 4. Wherein the hydrogen liquefying device 15 comprises a hydrogen cooling device 2 and a hydrogen compressing device 3.
The heat storage circuit includes: a waste heat source 8 and a heat storage tank 7; the heat storage tank 7 is internally provided with a charging heat exchanger, a discharging heat exchanger and a phase change heat storage material. The waste heat source and the charging heat exchanger in the heat storage tank are connected through a pipeline to form a loop, and a thermal working medium flow from the waste heat source is arranged in the loop.
The thermal power generation loop comprises a heat storage tank 7, a primary power generation device 9, a hot working medium pump 6 and a primary heat exchanger 5; a thermal power generation working medium is arranged in the thermal power generation loop; the outlet of the discharge heat exchanger of the heat storage tank 7 is connected with the inlet of the primary power generation device 9, the outlet of the primary power generation device 9 is connected with the inlet of the hot side of the primary heat exchanger 5, the outlet of the hot side of the primary heat exchanger 5 is connected with the inlet of the hot working medium pump 6, and the outlet of the hot working medium pump 6 is connected with the inlet of the discharge heat exchanger of the heat storage tank 7.
The hydrogen-based combined cooling heating and power supply loop comprises a low-temperature hydrogen storage tank 4, a primary heat exchanger 5, a secondary power generation device 10, a secondary heat exchanger 11, a hydrogen fuel cell 13, a hydrogen-steam combined cycle system 14 and a cooling device 12; wherein, a combustion hydrogen turbine, a waste heat boiler, a steam turbine power generation system and a steam extraction pipeline are arranged in the hydrogen-steam combined cycle system 14; a cold working medium and a cold working medium pump are arranged in the cold supply device 12;
the outlet of the low-temperature hydrogen storage tank 4 is connected with the cold side inlet of the primary heat exchanger 5, the cold side outlet of the primary heat exchanger 5 is connected with the secondary power generation device 10, the outlet of the secondary power generation device 10 is connected with the cold side inlet of the secondary heat exchanger 11, the cold side outlet of the secondary heat exchanger 11 is connected with the hydrogen fuel cell 13 and the hydrogen-steam combined circulation system 14, and the hot side of the secondary heat exchanger 11 is connected with the cooling device 12 to form a loop.
The working process of the invention can be divided into a hydrogen storage process, a heat storage process and a combined cooling heating and power supply process, and is specifically expressed as follows:
the hydrogen storage process is operated at the time interval of sufficient renewable power supply, the hydrogen production device 1 consumes electric energy, the electrolyzed water generates hydrogen, the generated hydrogen enters the hydrogen liquefying device 15, the hydrogen cooling device 2 and the hydrogen compressing device 3 in the hydrogen liquefying device 15 consume electric energy to cool and compress the hydrogen into liquid hydrogen, and the liquid hydrogen is sent into the low-temperature hydrogen storage tank 4 for storage. In this process, the hydrogen production apparatus 1 and the hydrogen liquefaction apparatus 15 consume electric energy, store liquid hydrogen in the low-temperature hydrogen storage tank 4, and store electricity simultaneously in the hydrogen storage process.
The heat storage process is operated at the time when the industrial waste heat is rich, the hot working medium of the waste heat source 8 enters the heat storage tank 7, the heat energy is transferred to the phase change heat storage material in the heat storage tank 7 through the charging heat exchanger in the heat storage tank 7, and the hot working medium after heat release returns to the waste heat source 8 again. In the process, the heat storage tank 7 absorbs heat from the waste heat source 8 and stores it.
The combined cooling heating and power supply process is operated in the time period when a user needs a large amount of cooling, heating and power, and the thermal power generation working medium in the thermal power generation loop can be ammonia gas and CO 2 And working media are equal. Firstly, a thermal power generation working medium in a thermal power generation loop absorbs heat in a heat storage tank 7 through a discharge heat exchanger to generate thermal power generation working medium steam, the thermal power generation working medium enters a primary power generation device 9 to do work for power generation and supply electric energy to the outside, thermal power generation working medium exhaust steam at the outlet of the primary power generation device 9 enters a primary heat exchanger 5 to be cooled by liquid hydrogen flow in the primary heat exchanger, and the cooled thermal power generation working medium is pressurized by a thermal working medium pump 6 again and then enters the heat storage tank 7 to complete circulation; meanwhile, liquid hydrogen in the low-temperature hydrogen storage tank 4 of the hydrogen-based combined cooling heating power supply loop enters the primary heat exchanger 5 to be heated into gaseous hydrogen, and the gaseous hydrogen enters the secondary power generation device 10 to be expanded to do work to generate power and supply electric energy to the outside; hydrogen at the outlet of the secondary power generation device 10 enters a secondary heat exchanger 11 for cooling a cold working medium in a cooling device, and a cooling device 12 utilizes a low-temperature cold working medium to supply cold to the outside; hydrogen at the outlet of the secondary heat exchanger 11 enters a fuel cell 13 and a hydrogen-steam combined cycle system 14, the fuel cell 13 directly converts chemical energy in the hydrogen into electric energy through electrochemical reaction, the hydrogen-steam combined cycle system 14 burns the hydrogen through a combustion hydrogen turbine to do work externally to generate electricity, high-temperature exhaust of the hydrogen-steam combined cycle system enters a waste heat boiler to heat water to generate steam, and the steam enters a steam turbine power generation system to expand to do work to generate electricity and supply electric energy externally; the steam extraction pipeline extracts part of steam and supplies industrial steam or heating steam to the outside.

Claims (4)

1. A hydrogen base cold and hot electricity trigeminy supplies energy storage system which characterized in that: the system comprises a hydrogen production device, a hydrogen liquefaction device, a low-temperature hydrogen storage tank, a primary heat exchanger, a hot working medium pump, a heat storage tank, a waste heat source, a primary power generation device, a secondary heat exchanger, a cold supply device, a hydrogen fuel cell and a hydrogen-steam combined circulation system;
the hydrogen production device, the hydrogen liquefaction device and the low-temperature hydrogen storage tank form a hydrogen storage loop; the hydrogen liquefying device comprises a hydrogen cooling device and a hydrogen compressing device; the hydrogen output of the hydrogen production device is connected with the inlet of the hydrogen liquefying device, and the outlet of the hydrogen liquefying device is connected with the inlet of the low-temperature hydrogen storage tank;
the waste heat source and the heat storage tank form a heat storage loop; wherein, a charging heat exchanger, a discharging heat exchanger and a phase change heat storage material are arranged in the heat storage tank; the waste heat source and the charging heat exchanger in the heat storage tank are connected through a pipeline to form a loop, and hot working medium flow from the waste heat source is arranged in the loop;
the heat storage tank, the primary power generation device, the hot working medium pump and the primary heat exchanger form a heat power generation loop; the outlet of a discharge heat exchanger of the heat storage tank is connected with the inlet of a primary power generation device, the outlet of the primary power generation device is connected with the inlet of the hot side of the primary heat exchanger, the outlet of the hot side of the primary heat exchanger is connected with the inlet of a hot working medium pump, the outlet of the hot working medium pump is connected with the inlet of the discharge heat exchanger of the heat storage tank, the inlet of the cold side of the primary heat exchanger is connected with the outlet of a low-temperature hydrogen storage tank, all the parts are connected through a pipeline, and a thermal power generation working medium is arranged in the pipeline;
the low-temperature hydrogen storage tank, the primary heat exchanger, the secondary power generation device, the secondary heat exchanger, the hydrogen fuel cell, the hydrogen-steam combined circulation system and the cooling device form a hydrogen-based combined cooling, heating and power supply loop; the hydrogen-steam combined cycle system is internally provided with a combustion hydrogen turbine, a waste heat boiler, a steam turbine power generation system and a steam extraction pipeline; a cold working medium and a cold working medium pump are arranged in the cold supply device; the outlet of the low-temperature hydrogen storage tank is connected with the cold side inlet of the primary heat exchanger, the cold side outlet of the primary heat exchanger is connected with the secondary power generation device, the outlet of the secondary power generation device is connected with the cold side inlet of the secondary heat exchanger, the cold side outlet of the secondary heat exchanger is connected with the hydrogen fuel cell and the hydrogen-steam combined cycle system, and the hot side of the secondary heat exchanger is connected with the cooling device to form a loop;
the working process of the system comprises a hydrogen storage process, a heat storage process and a combined cooling heating and power supply process, and the three processes can respectively and independently run; the hydrogen storage loop is operated in a time period with sufficient renewable power supply and is used for realizing a hydrogen storage process; the heat storage loop operates at a time interval when the industrial waste heat is rich and is used for realizing a heat storage process; the heat power generation loop and the hydrogen-based combined cooling heating power loop operate in a time period when a user needs a large amount of cooling, heating and power, and are used for realizing the combined cooling heating power process.
2. A hydrogen-based combined cooling, heating and power energy storage system as claimed in claim 1, wherein:
the hydrogen storage process specifically comprises the following steps: the hydrogen production device consumes electric energy, the electrolyzed water generates hydrogen, the generated hydrogen enters the hydrogen liquefying device, the hydrogen cooling device and the hydrogen compressing device in the hydrogen liquefying device consume the electric energy to cool and compress the hydrogen into liquid hydrogen, and the liquid hydrogen is sent into the low-temperature hydrogen storage tank for storage, so that hydrogen storage is completed and electricity storage is realized at the same time;
the heat storage process specifically comprises the following steps: the hot working medium of the waste heat source enters the heat storage tank, heat energy is transferred to the phase change heat storage material in the heat storage tank through the charging heat exchanger in the heat storage tank, and the hot working medium which finishes heat release returns to the waste heat source again to finish heat storage;
the combined cooling heating and power supply process specifically comprises the following steps: the thermal power generation working medium in the thermal power generation loop absorbs heat in the heat storage tank through the discharge heat exchanger to generate thermal power generation working medium steam, and the thermal power generation working medium enters the primary power generation device to do work for power generation and supply electric energy to the outside; the exhaust steam of the thermal power generation working medium at the outlet of the primary power generation device enters the primary heat exchanger to be cooled by the liquid hydrogen flow in the primary heat exchanger, and the cooled thermal power generation working medium is pressurized by the thermal working medium pump again and then enters the heat storage tank to complete circulation; meanwhile, liquid hydrogen in a low-temperature hydrogen storage tank of the hydrogen-based combined cooling heating power supply loop enters a primary heat exchanger to be heated into gaseous hydrogen, and the gaseous hydrogen enters a secondary power generation device to be expanded to apply work to generate power and supply electric energy to the outside; hydrogen at the outlet of the secondary power generation device enters a secondary heat exchanger for cooling a cold working medium in a cooling device, and the cooling device utilizes a low-temperature cold working medium to cool the outside; hydrogen at the outlet of the secondary heat exchanger enters a hydrogen fuel cell and a hydrogen-steam combined circulating system, the hydrogen fuel cell directly converts chemical energy in the hydrogen into electric energy through electrochemical reaction, the hydrogen-steam combined circulating system burns the hydrogen through a hydrogen-burning turbine to do work externally to generate electricity, high-temperature exhaust gas enters a waste heat boiler to heat water to generate water vapor, and the water vapor enters a steam turbine power generation system to expand to do work to generate electricity and supply electric energy externally; the steam extraction pipeline extracts part of steam and supplies industrial steam or heating steam to the outside.
3. The system of claim 1, wherein the system can provide electricity, heat and refrigeration to the outside world in different proportions by adjusting the power of each component of the primary power generation device, the secondary power generation device, the cooling device, the hydrogen fuel cell and the hydrogen-steam combined cycle system according to the user's requirements.
4. The hydrogen-based combined cooling heating and power energy storage system of claim 1, wherein the thermal power generation working medium in the thermal power generation loop is ammonia or CO 2 。
CN202211079546.1A 2022-09-05 2022-09-05 Hydrogen-based cold, heat and electricity triple supplies energy storage system Pending CN115614121A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118149335A (en) * 2024-05-10 2024-06-07 武汉氢能与燃料电池产业技术研究院有限公司 Marine fuel cell combined heat, power and cold supply system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118149335A (en) * 2024-05-10 2024-06-07 武汉氢能与燃料电池产业技术研究院有限公司 Marine fuel cell combined heat, power and cold supply system

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