CN118572740A - Cold, heat and electricity storage and supply system based on comprehensive energy - Google Patents
Cold, heat and electricity storage and supply system based on comprehensive energy Download PDFInfo
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- CN118572740A CN118572740A CN202411034714.4A CN202411034714A CN118572740A CN 118572740 A CN118572740 A CN 118572740A CN 202411034714 A CN202411034714 A CN 202411034714A CN 118572740 A CN118572740 A CN 118572740A
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- 238000003860 storage Methods 0.000 title claims abstract description 48
- 230000005611 electricity Effects 0.000 title claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 241
- 238000004146 energy storage Methods 0.000 claims abstract description 133
- 239000001257 hydrogen Substances 0.000 claims abstract description 133
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 133
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 131
- 239000000446 fuel Substances 0.000 claims abstract description 67
- 238000004519 manufacturing process Methods 0.000 claims abstract description 63
- 239000000498 cooling water Substances 0.000 claims abstract description 59
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 39
- 238000010248 power generation Methods 0.000 claims abstract description 34
- 238000005057 refrigeration Methods 0.000 claims abstract description 9
- 239000002826 coolant Substances 0.000 claims description 76
- 238000010438 heat treatment Methods 0.000 claims description 32
- 238000001816 cooling Methods 0.000 claims description 27
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000000746 purification Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 238000005485 electric heating Methods 0.000 claims description 4
- 150000002431 hydrogen Chemical class 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 210000004027 cell Anatomy 0.000 description 37
- 238000009434 installation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000007774 longterm Effects 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 3
- 238000007726 management method Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 2
- 230000005622 photoelectricity Effects 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 210000000352 storage cell Anatomy 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T50/00—Geothermal systems
-
- 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
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J15/00—Systems for storing electric energy
- H02J15/008—Systems for storing electric energy using hydrogen as energy vector
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/30—The power source being a fuel cell
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a cold, heat and electricity storage and supply system based on comprehensive energy, which comprises a power supply system and a cold and hot water supply system, wherein the power supply system comprises: natural energy power generation mechanism, energy storage battery, water electrolysis hydrogen production mechanism, hydrogen storage device, fuel cell; the natural energy power generation mechanism and the energy storage battery can supply power to a user; the cold and hot water supply system comprises a cold water tank and a hot water tank, and the hot water tank is connected with the first heat exchanger and the second heat exchanger; cooling water in the electrolytic tank enters the first heat exchanger to release heat and then flows back to the electrolytic tank for refrigeration; cooling water in the fuel cell enters the second heat exchanger to release heat and then flows back to the fuel cell for refrigeration; a water pipe is arranged between the cold water tank and the hot water tank; the cold water tank is connected with the geothermal heat exchange module and the third heat exchanger, and the second heat exchanger and the third heat exchanger are connected with an indoor temperature adjusting mechanism of a user. The invention has the advantages that: renewable resource utilization is maximized, and clean energy with zero pollution is provided.
Description
Technical Field
The invention relates to the technical field of cold, heat and electricity storage and supply systems.
Background
Wind energy, light energy and geothermal resources are energy sources which can be obtained by human beings. However, there is a problem in storage, and currently wind energy and light energy are mainly stored by batteries or directly generated. Geothermal resources supply heat and cool for users by adopting a ground-edge heat pump mode. The water electrolysis hydrogen production equipment can utilize wind energy and light energy to electrolyze water, generate hydrogen and store energy in the hydrogen. Fuel cells are devices that convert hydrogen into electrical and thermal energy.
In order to provide clean energy without pollution for users and solve the problems of heat and electricity consumption of household users, the applicant develops a cold, heat and electricity combined generation system based on comprehensive energy, which couples several new energy sources together to realize the maximization of renewable energy source utilization.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the cold, heat and electricity storage and supply system based on the comprehensive energy source is provided, natural energy sources such as wind energy, light energy and hydrogen energy are coupled together, the utilization of renewable resources is maximized, and clean energy with zero pollution is provided for users.
In order to solve the problems, the invention adopts the following technical scheme: a cold, heat and electricity storage supply system based on comprehensive energy comprises a power supply system and a cold and hot water supply system.
The power supply system includes: natural energy power generation mechanism, energy storage battery, water electrolysis hydrogen production mechanism, hydrogen storage device, fuel cell; the electric energy generated by the natural energy power generation mechanism can be respectively supplied to an energy storage battery and a user through an inverter, hydrogen generated by the water electrolysis hydrogen production mechanism is stored in a hydrogen storage device, the hydrogen storage device can supply hydrogen to a fuel battery, and the electric energy generated by the fuel battery is stored in the energy storage battery; the energy storage battery can supply power to the water electrolysis hydrogen production mechanism and a user; the water electrolysis hydrogen production mechanism comprises an electrolytic tank and a purification mechanism.
The cold and hot water supply system comprises a cold water tank and a hot water tank, wherein the water temperature in the cold water tank is controlled to be not more than 26 ℃, and the water temperature in the hot water tank is controlled to be not less than 50 ℃.
The hot water tank is provided with a hot water output pipe for providing hot water for a user, and is connected with the first heat exchanger and the second heat exchanger, and the first heat exchanger and the second heat exchanger supply heat for the hot water tank; the cooling water used as a cooling medium in the electrolytic tank absorbs heat generated by the electrolytic tank and then enters the first heating medium pipe in the first heat exchanger, and after the heat is released, the cooling water flows back to the electrolytic tank from the first heating medium pipe for refrigeration.
The cooling water used as a cooling medium in the fuel cell absorbs heat generated by the fuel cell and then enters the second heating medium pipe in the second heat exchanger, and after the heat is released, the cooling water flows back to the fuel cell from the second heating medium pipe for refrigeration.
The hot water tank is provided with a water supplementing pipe and a cold water output pipe for providing cold water for a user, a first water pipe with a control valve and a pump and a second water pipe with a control valve and a pump are arranged between the cold water tank and the hot water tank, hot water in the hot water tank can enter the cold water tank through the first water pipe, and water in the cold water tank can enter the hot water tank through the second water pipe.
The cold water tank is connected with the geothermal heat exchange module and the third heat exchanger, the burying depth of the geothermal heat exchange module is controlled to be 10-35 m below the ground surface, and water in the cold water tank enters the geothermal heat exchange module to be cooled and then flows back into the cold water tank; the water in the cold water tank enters the third heat exchanger to be used as a cooling medium; the second heat exchanger and the third heat exchanger are connected with an indoor temperature adjusting mechanism of a user.
The structure of the indoor temperature adjusting mechanism comprises: the indoor temperature-regulating medium output main pipe with the pump and the indoor temperature-regulating medium return main pipe are respectively connected with an indoor heating conveying pipe with a control valve and an indoor cooling conveying pipe with a control valve.
The indoor heating conveying pipe is connected to the input end of the indoor temperature-regulating medium heat exchange pipe in the second heat exchanger, and the output end of the indoor temperature-regulating medium heat exchange pipe is communicated with the indoor temperature-regulating medium return header pipe through an indoor heating return pipe with a control valve.
The indoor cooling conveying pipe is connected to the input end of the cooled medium pipe of the third heat exchanger in the third heat exchanger, and the output end of the cooled medium pipe of the third heat exchanger is communicated with the indoor temperature-regulating medium return manifold through the indoor cooling return pipe.
Further, the above-mentioned cold, heat and electricity storage and supply system based on comprehensive energy, wherein the geothermal heat exchange module comprises: the fin tube heat exchange unit of a plurality of series connection intercommunication in proper order, every fin tube heat exchange unit's structure includes: the top mounting block and the bottom mounting block are arranged up and down, a cooling water pipe is arranged between the top mounting block and the bottom mounting block, the cooling water pipe comprises two arc cooling water pipes which are oppositely arranged and have circular arc-shaped cross sections, a gap is reserved between the two arc cooling water pipes, the tops of the two arc cooling water pipes are closed, a water inlet port is arranged at the top of one arc cooling water pipe, a water outlet port is arranged at the top of the other arc cooling water pipe, arc through grooves corresponding to the two arc cooling water pipes are formed in the top mounting block, the upper ends of the two arc cooling water pipes respectively extend into the two arc through grooves of the top mounting block, the upper end part of each arc cooling water pipe is blocked and fixed in the corresponding arc through groove, and the water inlet port and the water outlet port respectively extend out of the corresponding arc through groove; the bottom installation piece is provided with annular intercommunication groove, and the lower extreme of two arc condenser tube is open and with intercommunication groove welded fastening intercommunication respectively.
The water outlet port of the former finned tube heat exchange unit is communicated with the water inlet port of the latter finned tube heat exchange unit, a geothermal module connecting pipe with a pump and a geothermal module return pipe are arranged on the cold water tank, the serially communicated finned tube heat exchange units are positioned at the water inlet forefront end of one finned tube heat exchange unit and are communicated with the geothermal module connecting pipe, and the water outlet port of the one finned tube heat exchange unit positioned at the water inlet forefront end of the finned tube heat exchange unit is connected with the geothermal module return pipe.
Further, the above-mentioned integrated energy-based cold, heat and electricity storage and supply system, wherein the bottom of each bottom mounting block has a tapered shape with gradually decreasing diameter from top to bottom.
Further, the foregoing cold, heat and electricity cogeneration system based on comprehensive energy, wherein the connection structure between the electrolytic tank and the first heat exchanger comprises: the electrolytic tank is provided with an electrolytic tank cooling medium output pipe and an electrolytic tank cooling medium return pipe with pumps, the electrolytic tank cooling medium output pipe and the electrolytic tank cooling medium return pipe are respectively communicated with two ends of a first heating medium pipe in the first heat exchanger, and a first bypass pipe with a first bypass flow regulating valve is further connected between the electrolytic tank cooling medium output pipe and the electrolytic tank cooling medium return pipe.
Further, the foregoing integrated energy-based cold, heat and electricity storage and supply system, wherein the connection structure between the fuel cell and the second heat exchanger comprises: the fuel cell is provided with a fuel cell cooling medium output pipe and a fuel cell cooling medium return pipe with pumps, the fuel cell cooling medium output pipe and the fuel cell cooling medium return pipe are respectively communicated with two ends of a second heating medium pipe in the second heat exchanger, and a second bypass pipe with a second bypass flow regulating valve is further connected between the fuel cell cooling medium output pipe and the fuel cell cooling medium return pipe.
Further, the cold, heat and electricity storage and supply system based on comprehensive energy, wherein the natural energy power generation mechanism comprises a photovoltaic power generation mechanism and a wind energy power generation mechanism.
Furthermore, the above-mentioned cold, heat and electricity storage and supply system based on comprehensive energy, wherein the natural energy power generation mechanism and the energy storage battery supply power to the user so as to meet the following logic:
When the electric energy generated by the natural energy power generation mechanism meets the user demand and excessive electric energy is still available, the natural energy power generation mechanism supplies power to the user, the excessive electric energy is conveyed to the energy storage battery for storage, when the electric quantity in the energy storage battery is greater than or equal to the hydrogen production threshold of the energy storage electric quantity, the energy storage battery supplies power to the water electrolysis hydrogen production mechanism, so that the water electrolysis hydrogen production mechanism is subjected to electrolysis hydrogen production, and when the electric quantity in the energy storage battery is less than or equal to the hydrogen production threshold of the energy storage electric quantity, the energy storage battery stops supplying power to the water electrolysis hydrogen production mechanism, and the water electrolysis hydrogen production mechanism stops hydrogen production; when the electric quantity in the energy storage battery reaches the maximum threshold value of the energy storage electric quantity, the natural energy power generation mechanism stops charging the energy storage battery;
When the electric energy generated by the natural energy power generation mechanism can not meet the requirement of a user, the natural energy power generation mechanism and the energy storage battery supply power to the user together; when the electric quantity of the energy storage battery is larger than the hydrogen production stopping threshold value of the electric quantity of the energy storage battery, the energy storage battery supplies power to a user and the water electrolysis hydrogen production mechanism, when the electric quantity in the energy storage battery reaches the minimum threshold value of the electric quantity of the energy storage battery, the fuel battery works to transmit electric energy to the energy storage battery, and when the electric quantity in the energy storage battery is larger than or equal to the charge stopping threshold value of the fuel battery of the electric quantity of the energy storage battery, the fuel battery stops transmitting electric energy to the energy storage battery; the hydrogen production threshold of the energy storage electric quantity, the hydrogen production stopping threshold of the energy storage electric quantity, the maximum threshold of the energy storage electric quantity, the minimum threshold of the energy storage electric quantity and the charging stopping threshold of the fuel cell of the energy storage electric quantity are all preset, and the following relational expression is satisfied:
The lowest threshold value of the energy storage electric quantity is less than the energy storage electric quantity fuel cell stop charge threshold < energy storage the hydrogen production threshold value of the electric quantity stop is less than the energy storage electric quantity hydrogen production threshold < energy storage a maximum power threshold.
Further, the cold, heat and electricity storage and supply system based on comprehensive energy is provided with temperature sensors for detecting water temperature on the hot water tank and the cold water tank respectively.
Further, the cooling water tank is further connected with the fourth heat exchanger, the purification mechanism in the water electrolysis hydrogen production mechanism comprises a hydrogen cooling mechanism for condensing and removing water from the hydrogen, a hydrogen cooling medium output pipe with a pump and a hydrogen cooling medium return pipe are arranged on the hydrogen cooling mechanism, the hydrogen cooling medium output pipe and the hydrogen cooling medium return pipe are respectively connected to two ends of the fourth heat exchanger cooled medium pipe in the fourth heat exchanger, the temperature of the hydrogen cooling medium in the hydrogen cooling mechanism is increased after the hydrogen cooling medium cools the hydrogen, the hydrogen cooling medium after the temperature increase enters the fourth heat exchanger cooled medium pipe for cooling, and the cooled hydrogen cooling medium flows back to the hydrogen cooling mechanism again through the hydrogen cooling medium return pipe for cooling.
Further, the cold, heat and electricity storage and supply system based on comprehensive energy is characterized in that an electric heating module is further arranged in the hot water tank.
Further, the cold, heat and electricity storage supply system based on comprehensive energy, wherein the water temperature in the cold water tank is controlled to be 20-25 ℃, and the water temperature in the hot water tank is controlled to be 55-60 ℃.
Furthermore, the cold, heat and electricity storage and supply system based on the comprehensive energy source, wherein the burial depth of the geothermal heat exchange module is controlled to be 18-30 m below the ground surface.
The application has the advantages that: the cold, heat and electricity storage and supply system based on the comprehensive energy, provided by the application, couples wind energy, light energy and hydrogen energy together through natural energy sources such as wind power, photoelectricity and geothermal energy, realizes the maximization of renewable resource utilization and provides clean energy with zero pollution for users. In addition, the system solves the technical problem of short-term insufficiency of natural energy through energy management optimization, and realizes full utilization of natural energy. The energy storage battery solves the short-term energy storage, and the hydrogen prepared by the water electrolysis hydrogen production mechanism solves the long-term energy storage, so that the combination of the short-term energy storage and the long-term energy storage not only fully utilizes natural energy, but also can more effectively meet the energy demand of users.
Drawings
Fig. 1 is a schematic diagram of a power supply principle of a cold, heat and electricity storage and supply system based on comprehensive energy.
Fig. 2 is a schematic diagram of a cold-hot water supply system in a cold, hot and electric storage supply system based on comprehensive energy.
Fig. 3 is a schematic structural diagram of a cooling water pipe in a finned tube heat exchange unit in a cold, heat and electricity storage and supply system based on comprehensive energy sources.
Fig. 4 is a schematic structural diagram of a geothermal heat exchange module in a cold, hot and electric storage and supply system based on integrated energy according to the present invention.
Fig. 5 is a schematic diagram showing a connection structure between the cooling water pipe and the top mounting block in a plan view.
Fig. 6 is a schematic diagram of a relative proportion of different power thresholds in the energy storage battery to the total power that the energy storage battery can store.
Detailed Description
The invention will be described in further detail with reference to the drawings and the preferred embodiments.
As shown in fig. 1 and 2, a cold, heat and electricity storage and supply system based on comprehensive energy comprises a power supply system and a cold and hot water supply system.
The power supply system includes: a natural energy power generation mechanism 1, an energy storage battery 2, a water electrolysis hydrogen production mechanism 3, a hydrogen storage device 4 and a fuel cell 5. The electric energy generated by the natural energy power generation mechanism 1 is supplied to the energy storage battery 2 and the user via the inverter, respectively. Hydrogen produced by the water electrolysis hydrogen production mechanism 3 is stored in the hydrogen storage device 4, the hydrogen storage device 4 can supply hydrogen to the fuel cell 5, and electric energy produced by the fuel cell 5 is stored in the energy storage cell 2. The energy storage battery 2 can supply power to the water electrolysis hydrogen production mechanism 3 and a user; the water-electrolytic hydrogen production mechanism 3 includes an electrolytic tank 31 and a purification mechanism 32. The energy storage battery 2 may be a lithium battery.
The cold and hot water supply system will be described.
The cold and hot water supply system comprises a cold water tank 6 and a hot water tank 7, wherein the water temperature in the cold water tank 6 is controlled to be 20-25 ℃, and the water temperature in the hot water tank 7 is controlled to be 55-60 ℃. The hot water tank 7 is provided with a hot water tank temperature sensor 702 for detecting the water temperature. The cold water tank 6 is provided with a cold water tank temperature sensor 601 for detecting a water temperature.
The hot water tank 7 is provided with a hot water output pipe 701 for providing hot water for a user, the hot water tank 7 is connected with the first heat exchanger 8 and the second heat exchanger 9, and the first heat exchanger 8 and the second heat exchanger 9 supply heat for the hot water tank 7.
The cooling water as the cooling medium in the electrolytic bath 31 absorbs the heat generated in the electrolytic bath 31, and then enters the first heating medium pipe 81 in the first heat exchanger 8, and after releasing the heat, the cooling water flows back from the first heating medium pipe 81 to the electrolytic bath 31 to cool. Specifically, the connection structure between the electrolytic tank 31 and the first heat exchanger 8 includes: the electrolytic tank 31 is provided with an electrolytic tank cooling medium output pipe 311 and an electrolytic tank cooling medium return pipe 313 with a first water pump 312, the electrolytic tank cooling medium output pipe 311 and the electrolytic tank cooling medium return pipe 313 are respectively communicated with two ends of a first heating medium pipe 81 in the first heat exchanger 8, and a first bypass pipe 314 with a first bypass flow regulating valve 315 is also connected between the electrolytic tank cooling medium output pipe 311 and the electrolytic tank cooling medium return pipe 313. The first bypass pipe 314 is provided for the purpose of: when the temperature in the hot water tank 7 is high, the first bypass flow rate regulating valve 315 on the first bypass pipe 314 may be opened to allow the cooling water as the cooling medium discharged from the electrolytic tank 31 after the temperature is raised, and a part of the cooling water flows back to the electrolytic tank cooling medium return pipe 313 through the first bypass pipe 314, so that the water temperature in the hot water tank 7 can be prevented from being excessively high. The flow rate in the first bypass pipe 314 is adjusted by adjusting the opening degree of the first bypass flow rate adjusting valve 315 so as to better control the temperature inside the hot water tank 7.
The arrangement of the first heat exchanger 8 realizes the full utilization of heat generated in the electrolytic tank 31, so that the energy consumption of the whole comprehensive energy-based cold, heat and electricity combined generation system is lower, and the energy can be fully utilized.
The cooling water as the cooling medium in the fuel cell 5 absorbs the heat generated by the fuel cell 5, and then enters the second heating medium pipe 91 in the second heat exchanger 9, and after releasing the heat, the cooling water flows back from the second heating medium pipe 91 to the fuel cell 5 to cool. Specifically, the connection structure between the fuel cell 5 and the second heat exchanger 9 includes: the fuel cell 5 is provided with a fuel cell cooling medium output pipe 51 and a fuel cell cooling medium return pipe 52 with a second water pump 511, the fuel cell cooling medium output pipe 51 and the fuel cell cooling medium return pipe 52 are respectively communicated with two ends of a second heating medium pipe 91 in the second heat exchanger 9, and a second bypass pipe 53 with a second bypass flow regulating valve 54 is also connected between the fuel cell cooling medium output pipe 51 and the fuel cell cooling medium return pipe 52. The function of providing the second bypass pipe 53 is that: when the temperature in the hot water tank 7 is high, the second bypass flow rate adjusting valve 54 in the second bypass pipe 53 may be opened to allow the cooling water as the cooling medium discharged from the fuel cell 5 to flow back to the fuel cell cooling medium return pipe 52 through the second bypass pipe 53, and thus, the water temperature in the hot water tank 7 can be prevented from being excessively high. The flow rate in the second bypass pipe 53 is adjusted by adjusting the opening degree of the second bypass flow rate adjusting valve 54 so as to better control the temperature inside the hot water tank 7.
In order to ensure that the temperature of the water in the hot water tank 7 is always kept at 55 to 60 ℃, an electric heating module 703 is provided in the hot water tank 7. The electrical heating module 703 may be powered by the energy storage battery 5. The electric heating module 703 is provided to perform a function of rapidly heating the hot water tank 7 and to supplement the heat supplied from the electrolytic bath 31 and the fuel cell 5.
The arrangement of the second heat exchanger 9 realizes the full utilization of heat generated in the fuel cell 5, so that the energy consumption of the whole cold, heat and electricity combined generation system based on comprehensive energy is further reduced, and the energy can be further fully utilized.
The cold water tank 6 is provided with a water replenishment pipe 61 and a cold water output pipe 62 for supplying cold water to a user, and a first water pipe 63 having a first water pipe control valve 631 and a third water pump 632 and a second water pipe 64 having a second water pipe control valve 641 and a fourth water pump 642 are provided between the cold water tank 6 and the hot water tank 7. The hot water in the hot water tank 7 can enter the cold water tank 6 through the first water pipe 63, and the water in the cold water tank 6 can enter the hot water tank 7 through the second water pipe 64.
The water in the hot water tank 7 is replenished from the cold water tank 6 through the second water pipe 64, and when the temperature in the cold water tank 6 is too low and is lower than 20 ℃, the hot water in the hot water tank 7 is input into the cold water tank 6 through the first water pipe 63.
The cold water tank 6 is connected with the geothermal heat exchange module 130 and the third heat exchanger 14.
The burying depth of the geothermal heat exchange module 130 is controlled to be 20-35 m below the ground surface, and water in the cold water tank 6 flows back into the cold water tank 6 after entering the geothermal heat exchange module 130 for cooling; the water in the cold water tank 6 enters the third heat exchanger 14 as cooling medium. The burying depth of the geothermal heat exchange module 130 is controlled to be 10-35 m, preferably 18-30 m below the ground surface, so that the temperature of the water in the cold water tank 6 is regulated to 20-25 ℃ after the heat exchange of the geothermal heat exchange module 130.
The second heat exchanger 9 and the third heat exchanger 14 are connected to a user indoor temperature control mechanism 15.
The indoor temperature adjusting mechanism 15 comprises: an indoor temperature-adjusting medium output manifold 151 with a temperature-adjusting water pump 1511 and an indoor temperature-adjusting medium return manifold 152, wherein the indoor temperature-adjusting medium output manifold 151 is respectively connected with an indoor heating conveying pipe 153 with an indoor heating control valve 1531 and an indoor cooling conveying pipe 154 with an indoor cooling control valve 1541. The indoor heating delivery pipe 153 is connected to the input end of the indoor temperature-adjusting medium heat exchange pipe 92 in the second heat exchanger 9, and the output end of the indoor temperature-adjusting medium heat exchange pipe 92 is communicated with the indoor temperature-adjusting medium return manifold 152 through the indoor heating return pipe 155 with a control valve.
The indoor cooling delivery pipe 154 is connected to the input end of the third heat exchanger cooled medium pipe 141 of the third heat exchangers 14, and the output end of the third heat exchanger cooled medium pipe 141 is communicated with the indoor temperature-adjusting medium return manifold 152 through the indoor cooling return pipe 156.
The indoor temperature adjusting mechanism 15 fully utilizes the cold energy of the cold water tank 6 and the heat energy of the hot water tank 7, so that the indoor temperature adjusting mechanism can be used for adjusting the indoor temperature of a user, such as heating in winter and refrigerating in summer.
In addition, in order to further reduce the energy consumption and improve the energy utilization efficiency, the cooling water tank 6 is further connected to the fourth heat exchanger 16 in this embodiment, the purifying mechanism 32 in the water electrolysis hydrogen production mechanism 3 includes a hydrogen cooling mechanism 321 for condensing and removing water from the hydrogen, a hydrogen cooling medium output pipe 3211 with a pump and a hydrogen cooling medium return pipe 3212 are provided on the hydrogen cooling mechanism 321, and the hydrogen cooling medium output pipe 3211 and the hydrogen cooling medium return pipe 3212 are respectively connected to two ends of the fourth heat exchanger cooled medium pipe 161 in the fourth heat exchanger 16. The temperature of the hydrogen gas is increased after the hydrogen gas is cooled by the hydrogen cooling medium in the hydrogen cooling mechanism 321, the hydrogen cooling medium after the temperature increase enters the fourth heat exchanger and is cooled by the cooling medium pipe 161, and the cooled hydrogen cooling medium flows back to the hydrogen cooling mechanism 321 again through the hydrogen cooling medium return pipe 3212 for refrigeration.
As shown in fig. 3, 4 and 5, the geothermal heat exchange module 130 includes: the fin tube heat exchange units 13 are sequentially connected in series, and the structure of each fin tube heat exchange unit 13 comprises: the top installation piece 131 and the bottom installation piece 132 that upper and lower set up are provided with the condenser tube between top installation piece 131 and the bottom installation piece 132, the condenser tube contains two relative setting, transversal arc condenser tube 133 that take on a circular arc, leaves opening 134 between two arc condenser tube 133, and the top of two arc condenser tube 133 is sealed, and the top of one of them arc condenser tube 133 is provided with inlet port 135, and the top of another arc condenser tube is provided with outlet port 136. The top installation block 131 is provided with arc through grooves 137 corresponding to the two arc cooling water pipes, the upper ends of the two arc cooling water pipes 133 respectively extend into the two arc through grooves 137 of the top installation block 131, the upper end part of each arc cooling water pipe 133 is blocked and fixed in the corresponding arc through groove 137, and the water inlet port 135 and the water outlet port 136 respectively extend out of the corresponding arc through groove 137, so that the pipeline connection is convenient. The bottom mounting block 132 is provided with an annular communication groove 138, and the lower ends of the two arc-shaped cooling water pipes 133 are open and fixedly communicated with the communication groove 138 in a welding manner. To facilitate the fixation of the cooling water pipe under the ground, the bottom of each bottom mounting block 132 in this embodiment is tapered with a gradually decreasing diameter from top to bottom. The outer walls of the two arc-shaped cooling water pipes 133 are spirally provided with outer radiating fins 139, and the inner walls of the two arc-shaped cooling water pipes 133 are spirally provided with inner radiating fins 140.
Every two adjacent fin tube heat exchange units 13, the water outlet 136 of the former fin tube heat exchange unit 13 is communicated with the water inlet 135 of the latter fin tube heat exchange unit 13, the geothermal module connecting pipe 65 with the water inlet pump 651 and the geothermal module return pipe 66 are arranged on the cold water tank 6, the water inlet 135 of one fin tube heat exchange unit 13 positioned at the forefront of water inlet among the fin tube heat exchange units 13 which are communicated in series is communicated with the geothermal module connecting pipe 65, and the water outlet 136 of the one fin tube heat exchange unit 13 positioned at the forefront of water inlet is connected with the geothermal module return pipe 66.
The number of the fin tube heat exchange units 13 in the geothermal heat exchange module 130 described above may be set according to the actual situation. By adopting the cooling water pipes with the two-piece structure, the water in the cold water tank 6 firstly enters one arc-shaped cooling water pipe 133 and then enters the other arc-shaped cooling water pipe 133 from the bottom, so that the heat exchange path is effectively increased, the heat exchange efficiency can be greatly improved, and the water entering the geothermal heat exchange module 130 from the cold water tank 6 can fully exchange heat below the ground surface. The shape of the arc-shaped cooling water pipe 133 also increases the areas of the inner and outer pipe walls, thereby further increasing the heat exchange area.
Because the inner walls of the two arc-shaped cooling water pipes 133 are provided with the inner radiating fins 140, and the outer walls of the two arc-shaped cooling water pipes are provided with the outer radiating fins 139, the heat exchange area is effectively increased, and therefore, the cooling water pipes with the structure can further effectively improve the heat exchange effect, and the geothermal energy can be better and more fully utilized. The gap 134 between the two arcuate cooling water pipes 133 provides conditions for the penetration of surface energy inside the two arcuate cooling water pipes 133, and also allows for more efficient heat exchange by the inner fins 140. Therefore, the geothermal heat exchange module 130 of the present application has a simple structure, and can fully utilize geothermal heat, so that the water temperature in the cold water tank 6 can be effectively ensured to be stabilized at 20 ℃ to 25 ℃.
The following description can be seen: the power supply system of the cold, heat and electricity combined generation system based on the comprehensive energy supplies electric energy to a user through the natural energy power generation mechanism 1 and the energy storage battery 2, and the whole electric energy supply is pollution-free.
The cold water tank 6 in the cold water supply system provides cold water for users through the geothermal heat exchange module 130 and can provide refrigeration for users through the indoor temperature adjusting mechanism 15; at the same time, the cold water tank 6 can also provide cold energy for the hydrogen cooling mechanism 321 in the purifying mechanism 32 in the water electrolysis hydrogen production mechanism 3.
The hot water tank 7 in the hot and cold water supply system makes full use of the heat generated by the electrolytic bath 31 and the fuel cell 5, and can provide heating for a user through the indoor temperature adjusting mechanism 15.
Example 2: as shown in fig. 1 and 6, the present embodiment further increases the operation logic of the natural energy power generation mechanism 1 and the energy storage battery 2 for supplying power to the user, as compared with embodiment 1, and the specific operation logic is as follows.
When the electric energy generated by the natural energy power generation mechanism meets the user demand and excessive electric energy still exists, the natural energy power generation mechanism 1 supplies power to the user, the excessive electric energy is conveyed to the energy storage battery 2 for storage, when the electric quantity in the energy storage battery 2 is greater than or equal to an energy storage electric quantity hydrogen production threshold S4, the energy storage battery 2 supplies power to the water electrolysis hydrogen production mechanism 3, the water electrolysis hydrogen production mechanism 3 is enabled to produce hydrogen in an electrolysis mode, when the electric quantity in the energy storage battery 2 is less than or equal to an energy storage electric quantity hydrogen production stopping threshold S3, the energy storage battery 2 stops supplying power to the water electrolysis hydrogen production mechanism 3, and the water electrolysis hydrogen production mechanism 3 stops producing hydrogen; when the electric quantity in the energy storage battery 2 is larger than or equal to the maximum threshold value S5 of the energy storage electric quantity, the natural energy power generation mechanism 1 stops charging the energy storage battery 2;
When the electric energy generated by the natural energy power generation mechanism 1 can not meet the use requirement of a user, the natural energy power generation mechanism 1 and the energy storage battery 2 supply power to the user together; when the electric quantity of the energy storage battery 2 is larger than the energy storage electric quantity stop hydrogen production threshold S3, the energy storage battery 2 supplies power to the user and the water electrolysis hydrogen production mechanism 3, when the electric quantity in the energy storage battery 2 is smaller than or equal to the energy storage electric quantity minimum threshold S1, the fuel battery 5 works to deliver electric energy to the energy storage battery 2, and when the electric quantity in the energy storage battery 2 is larger than or equal to the energy storage electric quantity fuel battery stop charging threshold S2, the fuel battery 5 stops delivering electric energy to the energy storage battery 2.
The hydrogen production threshold value S4 of the energy storage electric quantity, the hydrogen production stopping threshold value S3 of the energy storage electric quantity, the maximum threshold value S5 of the energy storage electric quantity, the minimum threshold value S1 of the energy storage electric quantity and the charging stopping threshold value S2 of the fuel cell of the energy storage electric quantity are preset, and the following relational expression is satisfied:
the minimum threshold S1 of the energy storage electric quantity is less than the stop charging threshold S2 of the fuel cell of the energy storage electric quantity, the stop hydrogen production threshold S3 of the energy storage electric quantity is less than the hydrogen production threshold S4 of the energy storage electric quantity, and the maximum threshold S5 of the energy storage electric quantity.
In general, the set minimum threshold value S1 of the stored energy is 5% -10% of the total electric quantity stored in the energy storage battery 2, the stop charging threshold value S2 of the fuel cell of the stored energy is 40% -50% of the total electric quantity stored in the energy storage battery 2, the stop hydrogen production threshold value S3 of the stored energy is 60% -70% of the total electric quantity stored in the energy storage battery 2, the hydrogen production threshold value S4 of the stored energy is 80% -90% of the total electric quantity stored in the energy storage battery 2, and the maximum threshold value S5 of the stored energy is 95% -99% of the total electric quantity stored in the energy storage battery 2.
The natural energy power generation mechanism 1 and the energy storage battery 2 supply power to the user by adopting the logic, and the purpose is that: optimizing energy management, thereby maximizing the utilization of natural energy, solving the technical problem of short-term insufficiency of natural energy, and further fully utilizing natural energy. The energy storage battery 2 solves the short-term energy storage, and the hydrogen produced by the water electrolysis hydrogen production mechanism 3 solves the long-term energy storage. The combination of short-term energy storage and long-term energy storage not only fully utilizes natural energy, but also can more effectively meet the energy requirements of users.
According to the cold, heat and electricity storage and supply system based on the comprehensive energy, wind energy, light energy and hydrogen energy are coupled together through natural energy sources such as wind power, photoelectricity and geothermal energy, so that the utilization of renewable resources is maximized, and clean energy with zero pollution is provided for users. In addition, the system solves the technical problem of short-term insufficiency of natural energy through energy management optimization, and realizes full utilization of natural energy. The energy storage battery 2 solves the short-term energy storage, the hydrogen prepared by the water electrolysis hydrogen production mechanism 3 solves the long-term energy storage, and the combination of the short-term energy storage and the long-term energy storage not only fully utilizes natural energy, but also can more effectively meet the energy demand of users.
Claims (12)
1. A cold, heat, electricity storage supply system based on comprehensive energy is characterized in that: comprises a power supply system and a cold and hot water supply system,
The power supply system includes: natural energy power generation mechanism, energy storage battery, water electrolysis hydrogen production mechanism, hydrogen storage device, fuel cell; the electric energy generated by the natural energy power generation mechanism can be respectively supplied to an energy storage battery and a user through an inverter, hydrogen generated by the water electrolysis hydrogen production mechanism is stored in a hydrogen storage device, the hydrogen storage device can supply hydrogen to a fuel battery, and the electric energy generated by the fuel battery is stored in the energy storage battery; the energy storage battery can supply power to the water electrolysis hydrogen production mechanism and a user; the water electrolysis hydrogen production mechanism comprises an electrolytic tank and a purification mechanism;
The cold and hot water supply system comprises a cold water tank and a hot water tank, the water temperature in the cold water tank is controlled to be not more than 26 ℃, and the water temperature in the hot water tank is controlled to be not less than 50 ℃;
The hot water tank is provided with a hot water output pipe for providing hot water for a user, and is connected with the first heat exchanger and the second heat exchanger, and the first heat exchanger and the second heat exchanger supply heat for the hot water tank;
Cooling water serving as a cooling medium in the electrolytic tank absorbs heat generated by the electrolytic tank and then enters a first heating medium pipe in the first heat exchanger, and after the heat is released, the cooling water flows back to the electrolytic tank from the first heating medium pipe for refrigeration;
Cooling water serving as a cooling medium in the fuel cell absorbs heat generated by the fuel cell and then enters a second heating medium pipe in the second heat exchanger, and after the heat is released, the cooling water flows back to the fuel cell from the second heating medium pipe for refrigeration;
The hot water in the hot water tank can enter the cold water tank through the first water pipe, and water in the cold water tank can enter the hot water tank through the second water pipe;
the cold water tank is connected with the geothermal heat exchange module and the third heat exchanger,
The burying depth of the geothermal heat exchange module is controlled to be 10-35 m below the ground surface, and water in the cold water tank flows back into the cold water tank after entering the geothermal heat exchange module for cooling; the water in the cold water tank enters the third heat exchanger to be used as a cooling medium;
The second heat exchanger and the third heat exchanger are connected with an indoor temperature adjusting mechanism of a user,
The structure of the indoor temperature adjusting mechanism comprises: an indoor temperature-regulating medium output main pipe with a pump and an indoor temperature-regulating medium return main pipe with a pump are respectively connected with an indoor heating conveying pipe with a control valve and an indoor cooling conveying pipe with a control valve,
The indoor heating conveying pipe is connected to the input end of the indoor temperature-adjusting medium heat exchange pipe in the second heat exchanger, and the output end of the indoor temperature-adjusting medium heat exchange pipe is communicated with the indoor temperature-adjusting medium return header pipe through an indoor heating return pipe with a control valve;
The indoor cooling conveying pipe is connected to the input end of the cooled medium pipe of the third heat exchanger in the third heat exchanger, and the output end of the cooled medium pipe of the third heat exchanger is communicated with the indoor temperature-regulating medium return manifold through the indoor cooling return pipe.
2. The integrated energy-based cold, heat and electricity storage and supply system according to claim 1, wherein: the geothermal heat exchange module has a structure comprising: the fin tube heat exchange unit of a plurality of series connection intercommunication in proper order, every fin tube heat exchange unit's structure includes: the top mounting block and the bottom mounting block are arranged up and down, a cooling water pipe is arranged between the top mounting block and the bottom mounting block, the cooling water pipe comprises two arc cooling water pipes which are oppositely arranged and have circular arc-shaped cross sections, a gap is reserved between the two arc cooling water pipes, the tops of the two arc cooling water pipes are closed, a water inlet port is arranged at the top of one arc cooling water pipe, a water outlet port is arranged at the top of the other arc cooling water pipe, arc through grooves corresponding to the two arc cooling water pipes are formed in the top mounting block, the upper ends of the two arc cooling water pipes respectively extend into the two arc through grooves of the top mounting block, the upper end part of each arc cooling water pipe is blocked and fixed in the corresponding arc through groove, and the water inlet port and the water outlet port respectively extend out of the corresponding arc through groove; the bottom mounting block is provided with an annular communication groove, and the lower ends of the two arc-shaped cooling water pipes are open and fixedly communicated with the communication groove by welding respectively;
The water outlet port of the former finned tube heat exchange unit is communicated with the water inlet port of the latter finned tube heat exchange unit, a geothermal module connecting pipe with a pump and a geothermal module return pipe are arranged on the cold water tank, the serially communicated finned tube heat exchange units are positioned at the water inlet forefront end of one finned tube heat exchange unit and are communicated with the geothermal module connecting pipe, and the water outlet port of the one finned tube heat exchange unit positioned at the water inlet forefront end of the finned tube heat exchange unit is connected with the geothermal module return pipe.
3. A comprehensive energy-based cold, heat and electricity storage and supply system according to claim 2, wherein: the bottom of each bottom mounting block is tapered with a gradually decreasing diameter from top to bottom.
4. The integrated energy-based cold, heat and electricity storage and supply system according to claim 1, wherein: the connection structure between the electrolysis trough and the first heat exchanger includes: the electrolytic tank is provided with an electrolytic tank cooling medium output pipe and an electrolytic tank cooling medium return pipe with pumps, the electrolytic tank cooling medium output pipe and the electrolytic tank cooling medium return pipe are respectively communicated with two ends of a first heating medium pipe in the first heat exchanger, and a first bypass pipe with a first bypass flow regulating valve is further connected between the electrolytic tank cooling medium output pipe and the electrolytic tank cooling medium return pipe.
5. The integrated energy-based cold, heat and electricity storage and supply system according to claim 1, wherein: the connection structure between the fuel cell and the second heat exchanger includes: the fuel cell is provided with a fuel cell cooling medium output pipe and a fuel cell cooling medium return pipe with pumps, the fuel cell cooling medium output pipe and the fuel cell cooling medium return pipe are respectively communicated with two ends of a second heating medium pipe in the second heat exchanger, and a second bypass pipe with a second bypass flow regulating valve is further connected between the fuel cell cooling medium output pipe and the fuel cell cooling medium return pipe.
6. The integrated energy-based cold, heat and electricity storage and supply system according to claim 1, wherein: the natural energy power generation mechanism comprises a photovoltaic power generation mechanism and a wind power generation mechanism.
7. The integrated energy-based cold, heat and electricity storage and supply system according to claim 6, wherein: the natural energy power generation mechanism and the energy storage battery supply power to the user, and the following logic is satisfied:
When the electric energy generated by the natural energy power generation mechanism meets the user demand and excessive electric energy is still available, the natural energy power generation mechanism supplies power to the user, the excessive electric energy is conveyed to the energy storage battery for storage, when the electric quantity in the energy storage battery is greater than or equal to the hydrogen production threshold of the energy storage electric quantity, the energy storage battery supplies power to the water electrolysis hydrogen production mechanism, so that the water electrolysis hydrogen production mechanism is subjected to electrolysis hydrogen production, and when the electric quantity in the energy storage battery is less than or equal to the hydrogen production threshold of the energy storage electric quantity, the energy storage battery stops supplying power to the water electrolysis hydrogen production mechanism, and the water electrolysis hydrogen production mechanism stops hydrogen production; when the electric quantity in the energy storage battery reaches the maximum threshold value of the energy storage electric quantity, the natural energy power generation mechanism stops charging the energy storage battery;
When the electric energy generated by the natural energy power generation mechanism can not meet the requirement of a user, the natural energy power generation mechanism and the energy storage battery supply power to the user together; when the electric quantity of the energy storage battery is larger than the hydrogen production stopping threshold value of the electric quantity of the energy storage battery, the energy storage battery supplies power to a user and the water electrolysis hydrogen production mechanism, when the electric quantity in the energy storage battery reaches the minimum threshold value of the electric quantity of the energy storage battery, the fuel battery works to transmit electric energy to the energy storage battery, and when the electric quantity in the energy storage battery is larger than or equal to the charge stopping threshold value of the fuel battery of the electric quantity of the energy storage battery, the fuel battery stops transmitting electric energy to the energy storage battery; the hydrogen production threshold of the energy storage electric quantity, the hydrogen production stopping threshold of the energy storage electric quantity, the maximum threshold of the energy storage electric quantity, the minimum threshold of the energy storage electric quantity and the charging stopping threshold of the fuel cell of the energy storage electric quantity are all preset, and the following relational expression is satisfied:
The lowest threshold value of the energy storage electric quantity is less than the energy storage electric quantity fuel cell stop charge threshold < energy storage the hydrogen production threshold value of the electric quantity stop is less than the energy storage electric quantity hydrogen production threshold < energy storage a maximum power threshold.
8. The integrated energy-based cold, heat and electricity storage and supply system according to claim 1, wherein: temperature sensors for detecting water temperature are respectively arranged on the hot water tank and the cold water tank.
9. The integrated energy-based cold, heat and electricity storage and supply system according to claim 1, wherein: the cooling water tank is also connected with the fourth heat exchanger, the purification mechanism in the water electrolysis hydrogen production mechanism comprises a hydrogen cooling mechanism for condensing and removing water from hydrogen, a hydrogen cooling medium output pipe with a pump and a hydrogen cooling medium return pipe are arranged on the hydrogen cooling mechanism, the hydrogen cooling medium output pipe and the hydrogen cooling medium return pipe are respectively connected to the two ends of the fourth heat exchanger cooled medium pipe in the fourth heat exchanger, the temperature of the hydrogen cooling medium in the hydrogen cooling mechanism is increased after the hydrogen is cooled, the hydrogen cooling medium after the temperature increase enters the fourth heat exchanger and is cooled in the cooling medium pipe, and the cooled hydrogen cooling medium returns to the hydrogen cooling mechanism again through the hydrogen cooling medium return pipe for refrigeration.
10. The integrated energy-based cold, heat and electricity storage and supply system according to claim 1, wherein: an electric heating module is also arranged in the hot water tank.
11. The integrated energy-based cold, heat and electricity storage and supply system according to claim 1, wherein: the water temperature in the cold water tank is controlled at 20-25 ℃ and the water temperature in the hot water tank is controlled at 55-60 ℃.
12. The integrated energy-based cold, heat and electricity storage and supply system according to claim 1, wherein: the burying depth of the geothermal heat exchange module is controlled to be 18-30 m below the ground surface.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200131648A1 (en) * | 2017-06-29 | 2020-04-30 | Hepu Energy Environmenial Technology Co., Ltd. | Fuel preparation reaction system, peak regulation system for power generation plant and power generation plant |
| CN116154975A (en) * | 2022-12-12 | 2023-05-23 | 中国大唐集团科学技术研究总院有限公司 | Off-grid clean energy comprehensive energy storage and supply system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200131648A1 (en) * | 2017-06-29 | 2020-04-30 | Hepu Energy Environmenial Technology Co., Ltd. | Fuel preparation reaction system, peak regulation system for power generation plant and power generation plant |
| CN116154975A (en) * | 2022-12-12 | 2023-05-23 | 中国大唐集团科学技术研究总院有限公司 | Off-grid clean energy comprehensive energy storage and supply system |
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