CN111677639A - Hot-melt salt heat storage ocean temperature difference energy-solar energy combined hydrogen energy production system - Google Patents
Hot-melt salt heat storage ocean temperature difference energy-solar energy combined hydrogen energy production system Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
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- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
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- F03G6/067—Binary cycle plants where the fluid from the solar collector heats the working fluid via a heat exchanger
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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
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F03G7/05—Ocean thermal energy conversion, i.e. OTEC
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- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
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- 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
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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Abstract
The invention relates to a hot-melt salt heat storage ocean temperature difference energy-solar energy combined hydrogen energy production system. The system can comprehensively utilize ocean temperature difference energy and solar energy and enables the system to run more stably through the hot-melt salt heat storage module. The technical scheme is as follows: a hot-melt salt heat storage ocean temperature difference energy-solar energy combined hydrogen energy production system comprises an ocean temperature difference energy-solar energy combined power generation module, a hot-melt salt heat storage module and a hydrogen energy production module, and is used for generating electric energy by utilizing ocean temperature difference energy and solar energy, converting the electric energy into hydrogen energy for storage, and simultaneously generating oxygen as a byproduct.
Description
Technical Field
The invention relates to a hot-melt salt heat storage ocean temperature difference energy-solar energy combined hydrogen energy production system which is used for generating electric energy through ocean temperature difference energy and solar energy and converting the electric energy into hydrogen energy for storage.
Background
With the exploitation and utilization of a large amount of fossil energy, the environmental problems in China are becoming more severe, and the transformation of fossil energy into renewable energy is imperative in the aspect of energy structure. Ocean energy is a typical renewable energy source, has the advantages of cleanness, environmental protection and the like, is rich in reserves, and has a very wide application prospect in China. The effective utilization of ocean temperature difference energy and ocean surface solar energy is an important direction for ocean energy development.
The existing ocean temperature difference energy power generation technology is mostly based on Rankine cycle, and the temperature difference between warm seawater with the temperature of about 26 ℃ on the ocean surface layer and cold seawater with the deep layer temperature of about 4 ℃ is utilized to drive a turbine to do work and generate power. The ocean temperature difference energy-solar energy combined power generation system increases the heat utilization of solar energy on the basis of temperature difference energy power generation. Compared with solar photovoltaic power generation, the solar heat utilization equipment has the advantages of simpler structure, longer service life and lower maintenance cost.
Solar heat storage is an important part of solar heat utilization, and the existing solar heat storage methods mainly comprise sensible heat storage, chemical reaction heat storage and latent heat storage, wherein the sensible heat storage is the simplest principle and the lowest costOne of (1) and (b). The heat storage technology of the hot molten salt is a sensible heat storage method, and 60 percent of NaNO is selected from the existing power station3With 40% KNO3The composite molten salt is used as a heat transfer and storage medium to utilize solar energy. However, the research on the hot molten salt is still in the development stage at present, and the use of the hot molten salt is still very rare in various energy comprehensive utilization systems.
The ocean temperature difference energy power generation potential in China is huge, so that considerable electric energy can be obtained by utilizing ocean energy power generation, and the ocean temperature difference energy power generation method is also an extremely important part for storing electric energy. The existing ocean temperature difference energy utilization system mostly uses a storage battery as an energy storage mode; the storage battery can not avoid the loss of electric energy generated when the storage battery is stored for a long time, the environment with high sea salinity and humidity is not favorable for the long-term work of the storage battery, and the electrolyte leakage can also pollute the environment if the storage battery is used for a long time.
Disclosure of Invention
The invention aims to overcome the defects of the background technology and provide the hot-melt salt heat storage ocean temperature difference energy-solar energy combined hydrogen energy production system, and the system can comprehensively utilize ocean temperature difference energy and solar energy and enables the system to run more stably through the hot-melt salt heat storage module.
Based on the above purpose, the technical scheme provided by the invention is as follows:
a hot-melt salt heat storage ocean temperature difference energy-solar energy combined hydrogen energy production system comprises an ocean temperature difference energy-solar energy combined power generation module, a hot-melt salt heat storage module and a hydrogen energy production module, and is used for generating electric energy by utilizing ocean temperature difference energy and solar energy, converting the electric energy into hydrogen energy for storage, and simultaneously generating oxygen as a byproduct.
The ocean temperature difference energy-solar energy combined power generation module comprises a warm seawater evaporator, a hot melt salt heat exchange chamber, a turbine, a condenser, a flow divider, a first working medium pump and a second working medium pump, wherein the warm seawater evaporator is arranged on the offshore surface under the sea to enable a circulating working medium to be heated and evaporated;
the hot-melt salt heat storage module comprises a cold-melt salt storage tank, a cold-melt salt pump, a solar heat absorber, a hot-melt salt heat storage tank, a hot-melt salt pump and a heat release pipeline of a hot-melt salt heat exchange chamber which are sequentially communicated end to end according to the flow direction of hot-melt salt, and two ends of a heat absorption pipeline of the hot-melt salt heat exchange chamber are respectively communicated with an outlet of the warm seawater evaporator and an inlet of a turbine so as to realize secondary heating of a circulating working medium;
the hydrogen energy production module comprises a generator driven by a turbine, an electrolytic water device powered by the generator, an oxygen compressor communicated with the anode of the electrolytic water device and the oxygen storage tank, and a hydrogen compressor communicated with the cathode of the electrolytic water device and the hydrogen storage chamber.
The condenser is also communicated with a pipeline which extends into deep sea and is provided with a cold sea water pump so as to take away heat released by liquefaction of a circulating working medium in the condenser through the deep sea water.
And a liquid level meter is arranged on the cold molten salt storage tank.
Valves are respectively arranged in a pipeline between the cold molten salt storage tank and the cold molten salt pump, a pipeline between the hot molten salt heat storage tank and the hot molten salt pump, a pipeline between the inlet of the turbine and the hot molten salt heat exchange chamber and a pipeline between the outlet of the warm seawater evaporator and the hot molten salt heat exchange chamber;
valves are respectively arranged in a pipeline between the flow divider and the first working medium pump, a pipeline between the flow divider and the second working medium pump and a pipeline between the outlet of the working medium storage chamber and the second working medium pump.
And a valve is arranged in a pipeline between the condenser and the cold seawater pump.
And valves are respectively arranged in a pipeline between the oxygen storage tank and the oxygen compressor and a pipeline between the high-pressure hydrogen storage chamber and the hydrogen compressor.
The warm seawater evaporator is an immersion type tubular evaporator; the condenser is a shell-and-tube heat exchanger.
The cycleThe ring working medium is ammonia; the hot molten salt is 60% NaNO3With 40% KNO3The composite molten salt of (1).
The hydrogen storage chamber is a high-pressure hydrogen storage chamber.
The beneficial effects of the invention comprise the following aspects:
the hot-melt salt heat storage ocean temperature difference energy-solar energy combined hydrogen energy production system provided by the invention realizes the comprehensive utilization of ocean temperature difference energy and solar energy. In the circulation process, a large amount of energy required by the vaporization of the circulating working medium is obtained from warm seawater through the submerged seawater heat exchanger, and the effective utilization of ocean temperature difference energy with huge reserves is realized. The submerged heat exchanger does not need to pretreat the seawater, is not easy to cause pipeline blockage, has lower operation and maintenance cost and is suitable for long-term operation of the system. On this basis, this system has increased hot melt salt heat accumulation module, converts solar energy into the heat energy of fused salt, has improved cycle fluid's import temperature on the one hand, has increased the efficiency of system, and on the other hand accessible fused salt carries out the heat accumulation, and the equal heatable cycle fluid of daytime, night has realized the all day operation of system.
The ocean temperature difference energy-solar energy combined hydrogen energy production system with the heat accumulated by the hot molten salt selects hydrogen energy as an energy storage mode. The hydrogen energy is a pure green and pollution-free energy source, and the vigorous development of the hydrogen energy is one of important ways for solving the energy crisis. The system works on the sea, and the hydrogen energy is used as an energy storage mode, so that long-term storage of energy can be realized, and the system is green and environment-friendly in the production and use processes and meets the development requirements of the current energy industry.
The ocean temperature difference energy-solar energy combined hydrogen energy production system with the heat stored by the hot molten salt does not discharge any pollutant in the operation process, and is a clean and green multi-energy complementary power generation and energy storage system.
Drawings
FIG. 1 is a system block diagram of the present invention.
FIG. 2 is a schematic flow diagram of an ocean thermal energy-solar energy combined power generation module in the invention.
FIG. 3 is a schematic flow diagram of a hot-melt salt thermal storage module according to the present invention.
FIG. 4 is a schematic flow diagram of a hydrogen energy production module of the present invention.
Description of reference numerals:
the system comprises a warm seawater evaporator 1, a hot-melt salt heat exchange chamber 2, a cold-melt salt storage tank 3, a liquid level meter 4, a cold-melt salt pump 5, a solar heat absorber 6, a hot-melt salt heat storage tank 7, a hot-melt salt pump 8, a turbine 9, a power generator 10, an electrolytic water device 11, an oxygen storage tank 12, an oxygen compressor 13, a hydrogen compressor 14, a hydrogen storage chamber 15, a condenser 16, a cold seawater pump 17, a flow divider 18, a first working medium pump 19, a working medium storage chamber 20, a second working medium pump 21 and valves 22-31 in pipelines.
Detailed Description
The present invention is described in further detail below with reference to the attached drawing figures.
Fig. 1 is a system diagram of an ocean temperature difference energy-solar energy combined hydrogen energy production system with hot-melt salt heat storage provided by the invention. According to the functions of each part, the system can be divided into three modules, namely an ocean temperature difference energy-solar energy combined power generation module, a hot-melt salt heat storage module and a hydrogen energy production module. The ocean temperature difference energy-solar energy combined power generation module comprises a warm seawater evaporator 1, a hot molten salt heat exchange chamber 2, a turbine 9, a power generator 10, a condenser 16, a cold seawater pump 17, a flow divider 18, a first working medium pump 19, a working medium storage chamber 20, a second working medium pump 21 and a plurality of valves; the hot-melt salt heat storage module comprises a cold-melt salt storage tank 3, a liquid level meter 4, a cold-melt salt pump 5, a solar heat absorber 6, a hot-melt salt heat storage tank 7 and a hot-melt salt pump 8; the hydrogen energy production module comprises an electrolytic water device 11, an oxygen storage tank 12, an oxygen compressor 13, a hydrogen compressor 14, a hydrogen storage chamber 15 and a plurality of valves.
Fig. 2 is a structural diagram of the ocean temperature difference energy-solar energy combined power generation module. The circulating working medium is heated and evaporated in the warm seawater evaporator a, and then is heated secondarily in the hot-melt salt heat exchange chamber b to form high-temperature steam, and the high-temperature steam enters the power generation device to generate power. The exhaust steam is condensed by the condenser d and then flows back to the warm seawater heater a to start the next circulation.
Ammonia is selected as a circulating working medium in the ocean temperature difference energy-solar energy combined power generation module, and the boiling point of the ammonia is 9.30 ℃ when the pressure is 0.6 MPa; ammonia has good thermodynamic properties and has an ozone decay index (ODP) and a greenhouse effect index (GWP) of 0.
The warm seawater evaporator (1) in the ocean temperature difference energy-solar energy combined power generation module is arranged on the offshore surface under the sea, the average temperature is about 26 ℃, and the liquid circulating working medium is heated and evaporated into a gas state; the warm seawater evaporator is an immersion type tubular evaporator; then the ammonia gas is heated in the hot melt salt heat exchange chamber (2) to about 300 ℃, and the pressure of the main ammonia gas is 0.9 MPa.
A condenser in the ocean temperature difference energy-solar energy combined power generation module is arranged on the sea surface, a cold sea water pump with the head of about 15m is matched to pump sea water with the deep sea temperature of about 4 ℃ into the condenser, and the temperature of the deep sea water is lower than the boiling point of a circulating working medium, so that the circulating working medium can be condensed into a liquid state in the condenser, and the condenser is a shell-and-tube heat exchanger; the working medium storage chamber has the capacity enough to store all the circulating working medium in the circulation, can play a role in storing the circulating working medium during the circulation maintenance or interruption, and is provided with a cooling system to keep the circulating working medium stored in a liquid state.
The specific embodiment of the scheme shown in FIG. 2 is shown below with reference to FIG. 1: the circulating working medium is heated and evaporated in the warm seawater evaporator 1 to become gaseous state. The evaporator 1 is communicated with the hot melt salt heat exchange chamber 2 through a valve 22, and the gaseous circulating working medium is heated secondarily in the hot melt salt heat exchange chamber 2 to become high-temperature steam. The hot molten salt heat exchange chamber 2 is communicated with a turbine 9 through a valve 25, and high-temperature steam pushes the turbine to be connected with a generator 10 to generate electricity. The outlet of the turbine 9 is connected to a condenser 16 by a valve. The cold seawater pump 17 is used for pumping deep seawater into the condenser 16 through a valve 29, and exhaust steam after work is done in the turbine enters the condenser 16 and is condensed into liquid cycle working medium through the deep seawater. A flow divider 18 is arranged at the outlet of the condenser 16, a first outlet of the flow divider is communicated with a first working medium pump 19 through a valve 30, and the first working medium pump is used for pumping the condensed liquid circulating working medium into a working medium storage chamber 20 for storage; the second outlet of the flow divider is connected to the inlet of the working medium pump 21 via a valve 29, and the outlet of the working medium storage chamber is also connected to the inlet of the second working medium pump 21 via a valve 31. The liquid cycle working medium after the cycle is finished can be controlled to enter the working medium storage chamber 20 or directly enter the next cycle through the valve 29, the valve 30 and the valve 31 according to the requirement. The outlet of the second working medium pump 21 is communicated with the inlet of the warm seawater evaporator 1, and the liquid circulating working medium is pumped into the warm seawater evaporator 1 by the second working medium pump 21 to start new circulation.
Fig. 3 is a flow chart of the hot melt salt thermal storage module of the present invention. Cold molten salt is stored in the cold molten salt storage tank a, and when the light and heat are sufficient in the daytime, the solar heat absorber absorbs heat to heat the hot molten salt to about 500 ℃; the cold molten salt pump is used for pumping the molten salt to a solar heat absorber (such as a solar heat collecting plate) for heating, one part of the heated hot molten salt is directly pumped into a hot molten salt heat exchange chamber d through the hot molten salt pump to heat a circulating working medium, and the other part of the heated hot molten salt is stored in a hot molten salt heat storage tank c for later use, so that the normal operation of the system under the poor photo-thermal condition or the night condition is maintained.
The hot melt salt in the hot melt salt heat storage module is 60 percent of NaNO3With 40% KNO3A composite molten salt which starts to melt at 220 ℃ and is thermally stable below 600 ℃.
The specific embodiment of the scheme shown in FIG. 3 is shown below with reference to FIG. 1: the cold molten salt storage tank 3 is provided with a liquid level meter 4 and is communicated with a cold molten salt pump 5 through a valve 23, and the cold molten salt pump 5 pumps the hot molten salt to a solar heat absorber 6 to absorb heat and store the heat in a hot molten salt heat storage tank 7; the hot molten rock storage tank is communicated with the hot molten salt pump 8 through a valve 24; when the light and heat are sufficient, part of hot molten salt is pumped into the hot molten salt heat exchange chamber 2 through a hot molten salt pump 8 to heat the circulating working medium, so that the normal operation of the system is maintained; the other part of hot molten salt is stored for later use and is pumped into the hot molten salt heat exchange chamber 2 through the hot molten salt pump 8 under the condition of poor photo-thermal condition or night to heat the circulating working medium, so that the whole-day operation of the system is realized.
Fig. 4 is a diagram showing the construction of a hydrogen energy production module of the present invention. The power generation device a drives the water electrolysis device b, oxygen generated by the anode after electrolysis is collected and stored (such as being introduced into the oxygen storage tank c), and the generated oxygen can be directly sold or used for other purposes. Hydrogen generated at the cathode enters a hydrogen storage chamber d, and the stored hydrogen is supplied as a main product to an ocean fishing vessel, a seabed workstation, or the like to be charged by a fuel cell or the like.
The form of the water electrolysis device can select a proton exchange membrane electrolytic cell, the electrodes can refer to nickel hydroxide and nickel sulfide to wrap a foam nickel structure, and the coating with negative charges is wrapped on the anode to realize the direct electrolysis of seawater; the hydrogen storage chamber needs to store hydrogen for a long time, and a high-pressure hydrogen storage chamber with the working pressure of about 35MPa can be selected.
The specific embodiment of the scheme shown in FIG. 4 is shown below with reference to FIG. 1: the generator 10 in the ocean temperature difference energy-solar energy combined power generation module provides electric energy for the water electrolysis device 11, the electrodes of nickel hydroxide and nickel sulfide wrapped foam nickel structures are selected to directly electrolyze extracted seawater into hydrogen and oxygen, the anode of the water electrolysis device 11 is connected with an oxygen compressor 13, and the oxygen generated by the anode enters an oxygen storage tank 12 through the oxygen compressor 13 to be stored; the cathode is connected to the hydrogen compressor 14 through a valve 26, and hydrogen generated at the cathode is introduced into the hydrogen storage chamber 15 through the hydrogen compressor 14 to be stored.
The working efficiency and the power generation power of the whole system are calculated by taking the flow of the circulating working medium of 2.13t/h as an example. The inlet temperature of the ammonia turbine is set to be 300 ℃ and the inlet pressure is set to be 0.9 MPa. The ideal enthalpy drop of the circulating working medium in the ammonia turbine is 715.72kJ/kg, the efficiency of the ammonia turbine and the efficiency of the generator are respectively 0.35 and 0.8, the rated power generation efficiency of the system is 10.3 percent, and the power generation power of the generator is 118.6 kW. The main power consumption in the system is the cold seawater pump 17 and the working medium pump 21. The average temperature of cold seawater is 4 deg.C, the boiling point of ammonia gas is 9.30 deg.C, the actual heat loss is considered, the actual inlet-outlet temperature difference of condenser 16 is 5 deg.C, and the required cold seawater amount is 155.6m when the heat exchange efficiency is 0.83H; the water taking pump has a lift of 15m and a water pumping efficiency of 0.8, and the power consumption of the cold seawater pump 17 is 7.9 kW. 60% NaNO required in the circulating process of the circulating working medium3With 40% KNO3The amount of the composite molten salt is about 6.6t/h, and 79.1t of the hot molten salt is required for maintaining the normal work of the night system. The average solar radiation energy of south China sea is 6763MJ/m2a, the area of the solar heat collecting device required by the system is calculated to be about 2409.0m2. In order to meet the circulation requirement, the lift of the working medium pump 21 is about 100m, the pump taking efficiency is 0.8, and the power consumption of the working medium pump 21 is 0.4 kW. Suppose that the power required by other equipment and staff in the system in daily life is 10.0kW, 100kW of electric energy can be output in the operation process of the system for the production of hydrogen energy.
Claims (9)
1. A hot-melt salt heat-storage ocean temperature difference energy-solar energy combined hydrogen energy production system comprises an ocean temperature difference energy-solar energy combined power generation module, a hot-melt salt heat storage module and a hydrogen energy production module, wherein electric energy is generated by utilizing ocean temperature difference energy and solar energy and is converted into hydrogen energy to be stored, and oxygen is generated as a byproduct;
the ocean temperature difference energy-solar energy combined power generation module comprises a warm seawater evaporator (1) arranged on the offshore surface under the sea to enable a circulating working medium to be heated and evaporated, a hot-melt salt heat exchange chamber (2) communicated with the warm seawater evaporator to heat the circulating working medium into high-temperature steam, a turbine (9) communicated with the hot-melt salt heat exchange chamber to receive the drive of the high-temperature steam to drive a power generator, a condenser (16) communicated with an outlet of the turbine to condense exhaust steam after acting, a flow divider (18) communicated with an outlet of the condenser, a first working medium pump (19) communicated with a first outlet of the flow divider and an inlet of a working medium storage chamber (20), and a second working medium pump (21) communicated with a second outlet of the flow divider and an inlet of the warm seawater evaporator, wherein the outlet of the working medium storage chamber is also communicated with an inlet of the;
the hot-melt salt heat storage module comprises a cold-melt salt storage tank (3), a cold-melt salt pump (5), a solar heat absorber (6), a hot-melt salt heat storage tank (7), a hot-melt salt pump (8) and a heat release pipeline of a hot-melt salt heat exchange chamber (2) which are sequentially communicated end to end according to the flow direction of hot-melt salt, and two ends of a heat absorption pipeline of the hot-melt salt heat exchange chamber are respectively communicated with an outlet of a warm seawater evaporator and an inlet of a turbine so as to realize secondary heating of a circulating working medium;
the hydrogen energy production module comprises a generator (10) driven by a turbine, an electrolytic water device (11) powered by the generator, an oxygen compressor (13) communicated with the anode of the electrolytic water device and an oxygen storage tank (12), and a hydrogen compressor (14) communicated with the cathode of the electrolytic water device (11) and a hydrogen storage chamber (15).
2. The hot-melt salt thermal storage ocean thermal energy-solar energy combined hydrogen energy production system according to claim 1, wherein: the condenser is also communicated with a pipeline which extends into deep sea and is provided with a cold sea water pump (17) so as to take away heat released by liquefaction of a circulating working medium in the condenser through the deep sea water.
3. The hot-melt salt thermal storage ocean thermal energy-solar energy combined hydrogen energy production system according to claim 2, wherein: and a liquid level meter (4) is arranged on the cold molten salt storage tank.
4. The hot-melt salt thermal storage ocean thermal energy-solar energy combined hydrogen energy production system according to claim 3, wherein:
valves are respectively arranged in a pipeline between the cold molten salt storage tank and the cold molten salt pump, a pipeline between the hot molten salt heat storage tank and the hot molten salt pump, a pipeline between the inlet of the turbine and the hot molten salt heat exchange chamber and a pipeline between the outlet of the warm seawater evaporator and the hot molten salt heat exchange chamber;
valves are respectively arranged in a pipeline between the flow divider and the first working medium pump, a pipeline between the flow divider and the second working medium pump and a pipeline between the outlet of the working medium storage chamber and the second working medium pump.
5. The hot-melt salt thermal storage ocean thermal energy-solar energy combined hydrogen energy production system according to claim 4, wherein: and a valve is arranged in a pipeline between the condenser and the cold seawater pump.
6. The hot melt salt thermal storage ocean thermal energy-solar energy combined hydrogen energy production system according to claim 5, wherein: and valves are respectively arranged in a pipeline between the oxygen storage tank and the oxygen compressor and a pipeline between the high-pressure hydrogen storage chamber and the hydrogen compressor.
7. The hot melt salt thermal storage ocean thermal energy-solar energy combined hydrogen energy production system according to claim 6, wherein: the warm seawater evaporator is an immersion type tubular evaporator; the condenser is a shell-and-tube heat exchanger.
8. The hot melt salt thermal storage ocean thermal energy-solar energy combined hydrogen energy production system according to claim 7, wherein: the circulating working medium is ammonia; the hot molten salt is 60% NaNO3With 40% KNO3The composite molten salt of (1).
9. The hot melt salt thermal storage ocean thermal energy-solar energy combined hydrogen energy production system according to claim 8, wherein: the hydrogen storage chamber is a high-pressure hydrogen storage chamber.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115637455A (en) * | 2021-11-26 | 2023-01-24 | 昆明理工大学 | Proton exchange membrane PEM (proton exchange membrane) water electrolysis hydrogen production system based on solar power generation and energy supply |
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