CN113512730B - Floating solar photovoltaic photo-thermal coupling electrolytic water hydrogen production system and method - Google Patents
Floating solar photovoltaic photo-thermal coupling electrolytic water hydrogen production system and method Download PDFInfo
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- CN113512730B CN113512730B CN202110374951.5A CN202110374951A CN113512730B CN 113512730 B CN113512730 B CN 113512730B CN 202110374951 A CN202110374951 A CN 202110374951A CN 113512730 B CN113512730 B CN 113512730B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 131
- 239000001257 hydrogen Substances 0.000 title claims abstract description 65
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 65
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 238000007667 floating Methods 0.000 title claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 39
- 230000008878 coupling Effects 0.000 title claims abstract description 18
- 238000010168 coupling process Methods 0.000 title claims abstract description 18
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 7
- 239000007789 gas Substances 0.000 claims abstract description 81
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 64
- 239000012528 membrane Substances 0.000 claims description 28
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 21
- 239000001301 oxygen Substances 0.000 claims description 21
- 229910052760 oxygen Inorganic materials 0.000 claims description 21
- 238000003860 storage Methods 0.000 claims description 5
- 239000012774 insulation material Substances 0.000 claims description 3
- 239000003792 electrolyte Substances 0.000 abstract description 5
- 239000008239 natural water Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 239000011358 absorbing material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a floating solar photovoltaic photo-thermal coupling electrolytic water hydrogen production system and a method, wherein the system comprises a floating bracket, a photo-thermal module and a hydrogen production and gas collection module; the photo-thermal module comprises a light gathering device and a heat collecting device, the light gathering device is concavely arranged on the floating support, and the heat collecting device is arranged in the light gathering device and is used for collecting heat gathered by the light gathering device; one end of the heat collecting device is provided with a water inlet; the hydrogen production and gas collection module comprises a photovoltaic cell array, an electrolysis device and a gas collection device; the photovoltaic cell array is arranged on the surface of the floating bracket; the other end of the heat collecting device is communicated with the electrolysis device; the photovoltaic cell array is electrically connected with the electrolysis device; the gas collecting device is arranged on the lower surface of the floating support and is connected with the gas outlet pipe of the electrolysis device. The invention can float on various water bodies, can electrolyze various natural water bodies, does not need additional water sources and complex electrolyte circulation pipelines, saves space and reduces the waste of solar energy resources.
Description
Technical Field
The invention belongs to the field of comprehensive utilization of solar energy and hydrogen energy, and relates to a floating solar photovoltaic photo-thermal coupling water electrolysis hydrogen production system and a method.
Background
The large use of fossil fuels and other traditional energy sources causes serious energy supply crisis and environmental pollution problems, and the development of renewable clean energy sources is urgent. Solar energy is used as a new energy source, is renewable, has wide distribution area, is common and easy to obtain, but is difficult to directly utilize. Solar power generation, particularly solar photovoltaic power generation technology, has been practically applied to converting solar energy into electric energy, but has large volatility, and is unfavorable for being integrated into a power grid. The hydrogen has the characteristics of high energy density, light weight, convenient storage and transportation, water as combustion product, no environmental pollution and the like, and is an ideal energy carrier. And electrolytic water hydrogen production is a common hydrogen production technology. Therefore, solar photovoltaic water electrolysis hydrogen production is a promising implementation mode.
The technology for producing hydrogen by water electrolysis mainly comprises alkaline water electrolysis, solid oxide electrolysis and Proton Exchange Membrane (PEM) electrolysis. Alkaline cells are relatively low cost, but suffer from alkaline contamination. The solid oxide electrolytic cell has the highest electrolytic efficiency, but the working temperature range is 700-1000 ℃, additional energy consumption is required, and the solid oxide electrolytic cell is still in the laboratory research and development stage, and has not been commercially applied. The PEM electrolyser has an electrolytic efficiency intermediate to that of the two, pure water can be used, and commercialization has been achieved. When hydrogen is produced by PEM electrolysis, the increase of the electrolysis water temperature can reduce the electric energy dissipation, thereby improving the electrolysis efficiency, but the increase of the electrolysis water temperature requires an additional heating device and energy consumption.
In addition, the existing solar photovoltaic electrolyzed water has the problems of large occupied area, high cost and obvious scale effect, so that the miniaturization, convenience and integration of equipment are hindered.
Disclosure of Invention
Based on the shortcomings of the prior art, the invention aims to provide a floating solar photovoltaic photo-thermal coupling hydrogen production system and a method. The system can float on water bodies such as oceans, lakes, reservoirs and the like, and can utilize solar energy resources on the water surface to avoid occupying precious land resources; the natural water body can be electrolyzed, and an additional water source and a complex electrolyte circulating pipeline are not needed; the solar photo-thermal effect is utilized to improve the temperature of the electrolyzed water, thereby improving the electrolysis efficiency; the photovoltaic, electrolysis, photo-thermal and gas collection are highly integrated, so that the space is saved, and the miniaturization and modularization of the equipment are realized.
In order to achieve the above purpose, the invention adopts the following technical scheme:
A floating solar photovoltaic photo-thermal coupling electrolytic water hydrogen production system comprises a floating bracket, a photo-thermal module and a hydrogen production and gas collection module;
The photo-thermal module comprises a light condensing device and a heat collecting device, the light condensing device is concavely arranged on the floating support, and the heat collecting device is arranged in the light condensing device and is used for collecting heat collected by the light condensing device; one end of the heat collecting device is provided with a water inlet;
The hydrogen production and gas collection module comprises a photovoltaic cell array, an electrolysis device and a gas collection device; the photovoltaic cell array is arranged on the surface of the floating bracket; the other end of the heat collecting device is communicated with the electrolysis device; the photovoltaic cell array is electrically connected with the electrolysis device to provide electric energy; the gas collecting device is connected with a gas outlet pipe of the electrolysis device;
the bottom of the gas collecting device is provided with water outlet small holes, and the top of the gas collecting device is provided with a gas outlet pipe with a piston.
As a further improvement of the invention, the light collecting device adopts a parabolic light collector, the heat collecting device adopts a heat collecting circular tube, and the heat collecting circular tube is arranged at the focus of the parabolic light collector.
As a further improvement of the invention, the parabolic concentrator and the heat collecting circular tube can meet the maximum lighting angle range, and the light incident to the parabolic concentrator is reflected to the heat collecting circular tube.
As a further improvement of the invention, the photovoltaic cell array comprises a plurality of solar panels which are symmetrically arranged on floating brackets at two sides of the light gathering device.
As a further improvement of the invention, the electrolysis device is a proton exchange membrane electrolysis cell which electrolyzes water into hydrogen and oxygen by adopting direct current generated by a photovoltaic cell array.
As a further improvement of the invention, the proton exchange membrane electrolytic cell is coated with heat insulation material.
As a further improvement of the invention, the proton exchange membrane electrolytic cell is provided with a temperature sensor.
As a further improvement of the invention, the gas collecting device comprises a hydrogen collecting chamber and an oxygen collecting chamber, wherein the hydrogen collecting chamber is connected with the cathode of the electrolysis device, and the oxygen collecting chamber is connected with the anode side of the electrolysis device;
the bottoms of the hydrogen collecting chamber and the oxygen collecting chamber are respectively provided with a water outlet small hole, and the tops of the hydrogen collecting chamber and the oxygen collecting chamber are respectively provided with an air outlet pipe with a piston.
As a further improvement of the invention, when water in the gas collecting device is discharged from the water outlet small hole, gas generated by the electrolysis device enters the gas collecting device.
A hydrogen production method of a floating solar photovoltaic photo-thermal coupling electrolytic water hydrogen production system comprises the following steps:
when the floating solar photovoltaic water electrolysis hydrogen production system is placed on the water surface, water enters from the water inlet of the heat collecting device and flows through the heat collecting device, the electrolysis device and the gas collecting device in sequence;
at the same time, the heat collecting device absorbs the light reflected by the parabolic condenser and converts the light into heat energy, and the water absorbs heat and heats up when flowing through the heat collecting device; gradually increasing the water temperature from the water inlet to the electrolyzer to form natural convection to drive water to flow from the water inlet to the proton exchange membrane electrolyzer;
The electrolysis device is powered by the photovoltaic cell array, and electrolyzes water to produce hydrogen and oxygen; the generated gas enters the gas collecting device for storage, and meanwhile, the original water of the gas collecting device is discharged through the water outlet at the bottom; when the gas collection is full, the upper conduit piston of the gas collection device is opened, the gas is transferred, and after water enters, the piston is closed to start the gas collection of the next round.
Compared with the prior art, the invention has the following advantages:
The invention provides a floating type electrolytic water hydrogen production system comprehensively utilizing solar photovoltaics and photo-heat, exploits and utilizes solar resources on various water surface occasions, avoids occupying precious land area, can be directly installed on a ship or on the coast of a sea island as an energy supply system, and provides a potential energy supply scheme for places which are far away from the land and have difficult electricity utilization. On the basis of solar photovoltaic water electrolysis, the solar photovoltaic water electrolysis device adopts the parabolic condenser and the heat collecting circular tube coated with the light absorbing material, and utilizes solar light and heat to improve the water temperature, thereby improving the electrolysis efficiency. The invention integrates photovoltaic, photo-thermal, electrolysis and gas collection, saves space, reduces the waste of solar energy resources and is beneficial to the modularization and integration of equipment.
Furthermore, the invention adopts a proton exchange membrane electrolytic cell, does not need to use alkaline electrolyte, can utilize various natural water bodies according to local conditions, and does not need to additionally provide various water sources and complex liquid circulation pipelines.
According to the hydrogen production method, the water inlet, the heat collecting device, the electrolysis device, the gas collecting device, the water surface of the water body and other parts have height differences, natural convection is generated in the heat collecting device due to the liquid temperature difference, water is comprehensively driven to flow from the water body to the electrolysis device through the water inlet, an additional power pump is not needed, and the outflow loss of hot water is reduced.
Drawings
FIG. 1 is a front view of a floating solar photovoltaic photo-thermal coupling electrolyzed water hydrogen production system of the present invention;
FIG. 2 is a top view of a hydrogen production system of the present invention;
FIG. 3 is a left side view of the hydrogen production system of the present invention;
FIG. 4 is a schematic view of section A-A of FIG. 2.
The solar energy collection device comprises a floating support, a photovoltaic cell array, a parabolic concentrator, a heat collection circular tube, a proton exchange membrane electrolytic cell, a hydrogen collection chamber, an oxygen collection chamber and a temperature sensor, wherein the floating support is arranged on the floating support, the photovoltaic cell array is arranged on the floating support, the parabolic concentrator is arranged on the photovoltaic cell array, the heat collection circular tube is arranged on the parabolic concentrator, the proton exchange membrane electrolytic cell is arranged on the photovoltaic cell, the hydrogen collection chamber is arranged on the photovoltaic cell, the oxygen collection chamber is arranged on the photovoltaic cell, and the temperature sensor is arranged on the photovoltaic cell.
Detailed Description
The following description of the embodiments of the present invention will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention is further described below with reference to fig. 1-4.
The invention provides a floating solar photovoltaic photo-thermal coupling electrolytic water hydrogen production system which comprises a floating bracket 1, a photo-thermal module and a hydrogen production and gas collection module, wherein the floating bracket is arranged on the bottom of the solar photovoltaic photo-thermal coupling electrolytic water hydrogen production system; the floating support 1 is made of a light foam material, and the photo-thermal module and the hydrogen production and gas collection module are integrated into a whole by the floating support and can float on water; the photo-thermal module comprises a light condensing device and a heat collecting device, wherein the light condensing device adopts a parabolic light condenser 3, and the heat collecting device adopts a heat collecting circular tube 4; the heat collecting circular tube 4 is arranged at the focus of the parabolic condenser 3, the outer wall of the heat collecting circular tube 4 is coated with black light absorbing material, light reflected by the parabolic condenser 3 is absorbed and converted into heat energy, and the heat energy is transmitted to water in the heat collecting circular tube 4, so that water flowing into a water inlet is heated and raised, and the temperature of electrolyzed water is increased; the hydrogen production and gas collection module comprises a photovoltaic cell array 2, an electrolysis device and a gas collection device.
The size and structure of the parabolic concentrator 3 and the heat collecting circular tube 4 meet the principle of marginal rays, and light incident on the parabolic concentrator 3 within the range of the maximum lighting angle can be reflected to the heat collecting circular tube 4.
The photovoltaic cell array 2 is formed by symmetrically arranging 6 monocrystalline silicon solar panels on two sides of the parabolic concentrator 3 and is positioned on the upper surface of the suspension bracket 1, and the photovoltaic cell array is connected in series and parallel according to illumination conditions and voltage and current requirements.
The proton exchange membrane electrolytic cell 5 comprises a cathode, an anode and a proton exchange membrane, water is electrolyzed into hydrogen and oxygen by using direct current generated by the photovoltaic cell array 2, hydrogen is generated at the cathode, oxygen is generated at the anode, and the cathode and the anode are connected to a gas collecting device through pipes; the proton exchange membrane electrolytic cell 5 is coated with a heat insulation material to avoid the heat dissipation effect caused by the external water body flow; the upper part of the proton exchange membrane electrolytic cell 5 is sealed by a rubber plug, and a temperature sensor 8 is inserted to monitor the temperature change in the proton exchange membrane electrolytic cell 5.
The gas collecting device comprises a hydrogen collecting chamber 6 and an oxygen collecting chamber 7, wherein the hydrogen collecting chamber 6 is connected with the cathode of the proton exchange membrane electrolytic cell 5 to collect hydrogen, and the oxygen collecting chamber 7 is connected with the anode side of the proton exchange membrane electrolytic cell 5 to collect oxygen; the bottom of the gas collecting device is provided with a water outlet small hole, and the top of the gas collecting device is provided with a conduit with a piston; when the system floats on water, the gas collecting device is filled with water, gas generated by electrolysis of water in the proton exchange membrane electrolytic cell 5 enters the gas collecting device through the guide pipe, and meanwhile, the water is discharged from the water outlet small hole at the bottom of the gas collecting device, namely, the water is collected through a drainage method; when the gas collection is full, the piston of the upper conduit is opened and water flows into the gas collection device and transfers the collected gas.
In summary, the working principle of the floating solar photovoltaic photo-thermal coupling water electrolysis hydrogen production system provided by the invention is as follows:
When the system is placed on the water surface, water enters the heat collecting circular tube 4 from the right water inlet because the water level is higher than that of the left gas collecting device, and flows through the heat collecting circular tube 4, the proton exchange membrane electrolytic cell 5 and the gas collecting device in sequence. At the same time, the black light-absorbing material on the outer wall of the heat-collecting circular tube 4 converts the light reflected by the parabolic condenser 3 into heat energy, and when the water flows through the heat-collecting circular tube 4, the heat conduction along the tube wall absorbs heat and heats up due to the temperature difference between the inner wall and the outer wall of the heat-collecting circular tube 4. The water temperature from the water inlet to the proton exchange membrane electrolytic cell 5 gradually rises, and the natural convection effect caused by the temperature difference phenomenon along the axial direction of the heat collecting circular tube 4 drives the water to flow from the water inlet to the proton exchange membrane electrolytic cell 5.
The electrolysis device is powered by the photovoltaic cell array 2, and the electrolysis water produces hydrogen and oxygen. The generated gas enters the gas collecting device for storage, and meanwhile, the original water of the gas collecting device is discharged through the water outlet at the bottom. When the gas collection is full, the upper conduit piston of the gas collection device is opened, the gas is transferred, and after water enters, the piston is closed to start the gas collection of the next round.
The increase of the water temperature improves the electrolysis efficiency of the proton exchange membrane electrolytic cell 5, and meanwhile, the heat-insulating material coated on the outer wall of the proton exchange membrane electrolytic cell 5 reduces the heat dissipation of the water in the proton exchange membrane electrolytic cell, thereby being beneficial to maintaining the temperature of the electrolyzed water.
Based on the principle, the invention also provides a hydrogen production method of the floating solar photovoltaic photo-thermal coupling electrolytic water hydrogen production system, which comprises the following steps:
when the floating solar photovoltaic water electrolysis hydrogen production system is placed on the water surface, water enters from the water inlet of the heat collecting device and flows through the heat collecting device, the electrolysis device and the gas collecting device in sequence;
at the same time, the heat collecting device absorbs the light reflected by the parabolic condenser 3 and converts the light into heat energy, and the water absorbs heat and heats up when flowing through the heat collecting device; the water temperature gradually rises from the water inlet to the electrolyzer to form natural convection to drive water to flow from the water inlet to the proton exchange membrane electrolytic cell 5;
The electrolysis device is powered by the photovoltaic cell array 2, and electrolyzes water to produce hydrogen and oxygen; the generated gas enters the gas collecting device for storage, and meanwhile, the original water of the gas collecting device is discharged through the water outlet at the bottom; when the gas collection is full, the upper conduit piston of the gas collection device is opened, the gas is transferred, and after water enters, the piston is closed to start the gas collection of the next round.
Compared with the prior art, the invention can float on various water bodies, and utilizes solar energy resources on water surface occasions to avoid occupying precious land resources; the alkaline electrolyte is not needed, various natural water bodies can be electrolyzed, and an additional water source and a complex electrolyte circulating pipeline are not needed; the solar photo-thermal effect is utilized to improve the temperature of the electrolyzed water, thereby improving the electrolysis efficiency; the photovoltaic, electrolysis, photo-thermal and gas collection are highly integrated, so that the space is saved, and the waste of solar energy resources is reduced.
The foregoing is a further elaboration of the present invention, and it is not intended that the invention be limited to the specific embodiments shown, but rather that a number of simple deductions or substitutions be made by one of ordinary skill in the art without departing from the spirit of the invention, all shall be deemed to fall within the scope of the invention as defined by the claims which are filed herewith.
Claims (6)
1. The floating solar photovoltaic photo-thermal coupling electrolytic water hydrogen production system is characterized by comprising a floating bracket (1), a photo-thermal module and a hydrogen production and gas collection module;
The photo-thermal module comprises a light gathering device and a heat collecting device, the light gathering device is concavely arranged on the floating support (1), and the heat collecting device is arranged in the light gathering device and is used for collecting heat gathered by the light gathering device; one end of the heat collecting device is provided with a water inlet;
The hydrogen production and gas collection module comprises a photovoltaic cell array (2), an electrolysis device and a gas collection device; the photovoltaic cell array (2) is arranged on the surface of the floating bracket (1); the other end of the heat collecting device is communicated with the electrolysis device; the photovoltaic cell array (2) is electrically connected with the electrolysis device to provide electric energy; the gas collecting device is arranged on the lower surface of the floating bracket (1) and is connected with the gas outlet pipe of the electrolysis device; the bottom of the gas collecting device is provided with water outlet small holes, and the top of the gas collecting device is provided with a gas outlet pipe with a piston;
the light condensing device adopts a parabolic light condenser (3), the heat collecting device adopts a heat collecting circular tube (4), and the heat collecting circular tube (4) is arranged at the focus of the parabolic light condenser (3);
The electrolysis device is a proton exchange membrane electrolysis cell (5), and the proton exchange membrane electrolysis cell (5) adopts direct current generated by the photovoltaic cell array (2) to hydrolyze into hydrogen and oxygen;
the gas collecting device comprises a hydrogen collecting chamber (6) and an oxygen collecting chamber (7), the hydrogen collecting chamber (6) is connected with the cathode of the electrolysis device, and the oxygen collecting chamber (7) is connected with the anode side of the electrolysis device;
The bottoms of the hydrogen collection chamber (6) and the oxygen collection chamber (7) are provided with water outlet small holes, and the tops of the hydrogen collection chamber and the oxygen collection chamber are provided with air outlet pipes with pistons;
when water in the gas collecting device is discharged from the water outlet small hole, gas generated by the electrolysis device enters the gas collecting device.
2. The floating solar photovoltaic photo-thermal coupling water electrolysis hydrogen production system according to claim 1, wherein the parabolic concentrator (3) and the heat collection circular tube (4) meet the maximum lighting angle range, and light incident to the parabolic concentrator (3) is reflected to the heat collection circular tube (4).
3. The floating solar photovoltaic photo-thermal coupling water electrolysis hydrogen production system according to claim 1, wherein the photovoltaic cell array (2) comprises a plurality of solar panels which are symmetrically arranged on floating supports (1) at two sides of the light gathering device.
4. A floating solar photovoltaic photo-thermal coupling water electrolysis hydrogen production system according to claim 3, wherein the proton exchange membrane electrolytic cell (5) is coated with heat insulation material.
5. A floating solar photovoltaic photo-thermal coupling water electrolysis hydrogen production system according to claim 4 wherein a temperature sensor (8) is provided on the proton exchange membrane cell (5).
6. A method of producing hydrogen in a floating solar photovoltaic photo-thermal coupling electrolyzed water hydrogen production system as defined in any one of claims 1 to 5 comprising the steps of:
when the floating solar photovoltaic water electrolysis hydrogen production system is placed on the water surface, water enters from the water inlet of the heat collecting device and flows through the heat collecting device, the electrolysis device and the gas collecting device in sequence;
at the same time, the heat collecting device absorbs the light reflected by the parabolic condenser (3) and converts the light into heat energy, and the water absorbs heat and heats up when flowing through the heat collecting device; the water temperature gradually rises from the water inlet to the electrolysis device to form natural convection to drive water to flow from the water inlet to the proton exchange membrane electrolysis cell (5);
The electrolysis device is powered by the photovoltaic cell array (2), and electrolyzes water to produce hydrogen and oxygen; the generated gas enters the gas collecting device for storage, and meanwhile, the original water of the gas collecting device is discharged through the water outlet at the bottom; when the gas collection is full, the upper conduit piston of the gas collection device is opened, the gas is transferred, and after water enters, the piston is closed to start the gas collection of the next round.
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| CN114164443A (en) * | 2021-12-03 | 2022-03-11 | 鄂尔多斯市紫荆创新研究院 | Method for preparing hydrogen by coupling photovoltaic power generation and electrolyzed water |
| CN114481181B (en) * | 2022-01-10 | 2024-05-14 | 江苏大学 | Micro solid oxide electrolytic hydrogen production device based on micro combustion heat supply and power supply |
| CN114836775A (en) * | 2022-03-16 | 2022-08-02 | 上海电力大学 | Integrated portable photovoltaic water electrolysis hydrogen production device and hydrogen production system |
| CN115676775A (en) * | 2022-11-21 | 2023-02-03 | 西安航天动力研究所 | Photolysis water hydrogen production device and lunar base energy supply system |
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