CN114135923A - Heat pump system for recovering waste heat of fuel cell power generation system - Google Patents
Heat pump system for recovering waste heat of fuel cell power generation system Download PDFInfo
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- CN114135923A CN114135923A CN202210110213.4A CN202210110213A CN114135923A CN 114135923 A CN114135923 A CN 114135923A CN 202210110213 A CN202210110213 A CN 202210110213A CN 114135923 A CN114135923 A CN 114135923A
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- water
- fuel cell
- water tank
- heat
- side wall
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/02—Domestic hot-water supply systems using heat pumps
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04044—Purification of heat exchange media
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04067—Heat exchange or temperature measuring elements, thermal insulation, e.g. heat pipes, heat pumps, fins
- H01M8/04074—Heat exchange unit structures specially adapted for fuel cell
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/18—Domestic hot-water supply systems using recuperated or waste heat
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Fuel Cell (AREA)
Abstract
The invention relates to the technical field of fuel cells, and discloses a heat pump system for recovering waste heat of a fuel cell power generation system, which comprises a fuel cell and a water tank and is characterized in that: the water tank is characterized in that a first water pump is fixedly communicated with the left side wall of the water tank, the water inlet end of the first water pump is located in the water tank, and the water outlet end of the first water pump is fixedly communicated with a water outlet pipe. The heat pump system for recovering the waste heat of the fuel cell power generation system can replace the waste heat in the cooling liquid for supplying domestic hot water, greatly improves the utilization efficiency of the system and enables the comprehensive utilization efficiency to reach 80%; the working environment of the fuel cell is ensured, the working stability of the fuel cell is ensured, impurities in water can be filtered, the water purity is improved, waste heat generated in the cell stack reaction process is used as a driving heat source, the heat grade is further improved by a heat pump device, and the temperature and the pressure required by a container are provided for heating an alloy material or an organic liquid hydrogen storage device.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a heat pump system for recovering waste heat of a fuel cell power generation system.
Background
A Fuel Cell (Fuel Cell) is a power generation device that directly converts chemical energy present in a Fuel and an oxidant into electrical energy. Fuel and air are separately fed into the fuel cell and electricity is wonderfully produced. It looks like a storage battery but it cannot "store electricity" but is a "power plant".
PEMFC pem fuel cells generate a large amount of water and heat at the cathode during operation. And the operating temperature of the PEMFC needs to be stabilized at 60-80 ℃, the chemical reaction rate can be slowed down when the temperature is too low, the power generation efficiency is low, and the irreversible damage can be caused when the proton exchange membrane is dehydrated when the temperature is too high. And the temperature of the battery needs to be kept uniform, and the film is heated unevenly due to large temperature difference, so that the service life of the battery is shortened.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a heat pump system for recovering the waste heat of a fuel cell power generation system, which has the advantages of ensuring the smooth work of a fuel cell and the like, and solves the problems that the chemical reaction rate is slowed down due to too low temperature of the fuel cell, the power generation efficiency is low, and the irreversible damage is caused by the dehydration of a proton exchange membrane due to too high temperature. And the temperature of the battery needs to be kept uniform, and the film is heated unevenly due to large temperature difference, so that the service life of the battery is shortened.
(II) technical scheme
In order to realize the purpose of ensuring the smooth work of the fuel cell, the invention provides the following technical scheme: a heat pump system for recovering waste heat of a fuel cell power generation system comprises a fuel cell and a water tank, and is characterized in that: the left side wall of the water tank is fixedly communicated with a first water pump, the water inlet end of the first water pump is positioned in the water tank, the water outlet end of the first water pump is fixedly communicated with a water outlet pipe, the upper end of the water outlet pipe penetrates through the side wall of the fuel cell and is communicated with a plate type heat exchanger inside the fuel cell, the water outlet end of the plate type heat exchanger is fixedly communicated with a water return pipe, the lower end of the water return pipe is fixedly communicated with the upper side wall of the water tank, the right side wall of the water tank is fixedly communicated with a second water pump, the water inlet end of the second water pump is fixedly communicated with the side wall of the water tank, the water outlet end of the second water pump is fixedly communicated with a radiating pipe, an evaporator is placed on the right side of the water tank, the right end of the radiating pipe penetrates through the evaporator and is fixedly communicated with the right side wall of the water tank, a condenser is arranged above the evaporator, and a first working medium pipeline and a second working medium pipeline are communicated between the condenser and the evaporator, the first working medium pipeline and the second working medium pipeline are externally provided with a compressor and a thermal expansion valve, a hydrogen storage device is arranged above the condenser, two third working medium pipelines are communicated between the hydrogen storage device and the condenser, the same hydrogen conveying pipeline is communicated between the hydrogen storage device and the fuel cell, and the upper side wall of the hydrogen storage device is fixedly communicated with a hydrogen inlet pipeline.
Preferably, the right side wall of water tank fixedly connected with two connecting rods, the same piece cartridge filter of right-hand member fixedly connected with of two connecting rods, it has filter plate to peg graft in the cartridge filter, the cartridge filter sets up in the radiator pipe.
Preferably, filter plate's last lateral wall stretches out cartridge filter and fixedly connected with diaphragm, two locating plates of the lower lateral wall symmetry fixedly connected with of diaphragm, two spacing groove and spacing inslot have all been seted up on the lateral wall that the locating plate is in opposite directions and have been pegged graft the limiting plate, equal fixedly connected with latch on the lateral wall that limiting plate and cartridge filter are in opposite directions, the lateral wall fixedly connected with horizontal pole of limiting plate, the one end fixedly connected with arm-tie that the horizontal pole stretches out the spacing groove, the same spring of lateral wall fixedly connected with between arm-tie and the locating plate.
Preferably, the side wall of the pulling plate is fixedly connected with a pulling ring.
Preferably, the outer wall of the filter screen plate is fixedly sleeved with two rubber rings.
Preferably, the upper side wall of the transverse plate is fixedly connected with a handle.
Preferably, the spring is a copper alloy spring.
Preferably, the inner wall of the water tank is fixedly connected with two liquid level sensors, the right side wall of the water tank is fixedly communicated with a water injection pipe, and the lower side wall of the water tank is fixedly communicated with a hot water supply pipe.
(III) advantageous effects
Compared with the prior art, the invention provides a heat pump system for recovering waste heat of a fuel cell power generation system, which has the following beneficial effects:
1. the heat pump system for recovering the waste heat of the fuel cell power generation system can replace the waste heat in the cooling liquid for supplying domestic hot water, and greatly improves the utilization efficiency of the system so that the comprehensive utilization efficiency reaches 80%.
2. The heat pump system for recovering the waste heat of the fuel cell power generation system ensures the working environment of the fuel cell and the working stability of the fuel cell.
3. This a heat pump system for fuel cell power generation system waste heat recovery can filter aquatic impurity, has improved the cleanliness of water.
4. The heat pump system for recovering the waste heat of the fuel cell power generation system utilizes the waste heat generated in the cell stack reaction process as a driving heat source, further improves the heat grade by using the heat pump device, and heats an alloy material or an organic liquid hydrogen storage device to provide the temperature and the pressure required by a container.
Drawings
FIG. 1 is a schematic structural diagram of a heat pump system for recovering waste heat of a fuel cell power generation system according to the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
fig. 3 is an enlarged schematic view of a portion B in fig. 2.
In the figure: 1 fuel cell, 2 water tanks, 3 first water pumps, 4 water outlet pipes, 5 water return pipes, 6 hydrogen storage devices, 7 hydrogen inlet pipelines, 8 second water pumps, 9 radiating pipes, 10 hot water supply pipes, 11 connecting rods, 12 filter cartridges, 13 filter screen plates, 14 transverse plates, 15 positioning plates, 16 limiting grooves, 17 limiting plates, 18 latches, 19 transverse rods, 20 pulling plates, 21 springs, 22 pulling rings, 23 rubber rings, 24 handles, 25 hydrogen conveying pipelines, 26 liquid level sensors, 27 water injection pipes, 28 evaporators, 29 condensers, 30 compressors, 31 thermal expansion valves, 32 first working medium pipelines, 33 second working medium pipelines and 34 third working medium pipelines.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, a heat pump system for recovering waste heat of a fuel cell power generation system comprises a fuel cell 1 and a water tank 2, a first water pump 3 is fixedly communicated with the left side wall of the water tank 2, the water inlet end of the first water pump 3 is positioned in the water tank 2, the water outlet end of the first water pump 3 is fixedly communicated with a water outlet pipe 4, the upper end of the water outlet pipe 4 penetrates through the side wall of the fuel cell 1 and is communicated with a plate heat exchanger inside the fuel cell 1, the water outlet end of the plate heat exchanger is fixedly communicated with a water return pipe 5, the lower end of the water return pipe 5 is fixedly communicated with the upper side wall of the water tank 2, a second water pump 8 is fixedly communicated with the right side wall of the water tank 2, the water inlet end of the second water pump 8 is fixedly communicated with the side wall of the water tank 2, the water outlet end of the second water pump 8 is fixedly communicated with a heat radiation pipe 9, an evaporator 28 is arranged on the right side of the water tank 2, the right end of the heat radiation pipe 9 passes through the evaporator 28 and is fixedly communicated with the right side wall of the water tank 2, a condenser 29 is arranged above the evaporator 28, a first working medium pipeline 32 and a second working medium pipeline 33 are communicated between the condenser 29 and the evaporator 28, a compressor 30 and a thermal expansion valve 31 are arranged outside the first working medium pipeline 32 and the second working medium pipeline 33, a hydrogen storage device 6 is arranged above the condenser 29, two third working medium pipelines 34 are communicated between the hydrogen storage device 6 and the condenser 29, the same hydrogen conveying pipeline 25 is communicated between the hydrogen storage device 6 and the fuel cell 1, and a hydrogen inlet pipeline 7 is fixedly communicated with the upper side wall of the hydrogen storage device 6.
Two connecting rods 11 of the right side wall fixedly connected with of water tank 2, the same root cartridge filter 12 of the right-hand member fixedly connected with of two connecting rods 11, it has filter screen board 13 to peg graft in the cartridge filter 12, and cartridge filter 12 sets up in cooling tube 9, can filter aquatic impurity, has improved the cleanliness factor of water.
The side wall of the pulling plate 20 is fixedly connected with a pulling ring 22, which is convenient for pulling the pulling plate 20.
Two rubber rings 23 are fixedly sleeved on the outer wall of the filter screen plate 13, so that the sealing performance between the filter screen plate 13 and the filter cartridge 12 is improved.
The upper side wall of the transverse plate 14 is fixedly connected with a handle 24, which is convenient for lifting and pulling the transverse plate 14.
The spring 21 is a copper alloy spring, and the service life of the spring 21 can be prolonged.
Two level sensor 26 of inner wall fixedly connected with of water tank 2, the fixed intercommunication of the right side wall of water tank 2 has water injection pipe 27, and the fixed intercommunication of the lower side wall of water tank 2 has hot water supply pipe 10, can supply people with the hot water in the water tank 2 and use.
To sum up, in the heat pump system for recovering the waste heat of the fuel cell power generation system, when the water temperature in the water tank 2 is too high, the second water pump 8 is started, the hot water enters the evaporator 28 of the heat pump system through the pipeline 9, the temperature is reduced through the evaporator, the hot water in the pipe 9 is cooled, meanwhile, the evaporator recovers the heat in the hot water, and the heat in the hot water is used as a driving heat source to vaporize the heat pump working medium, the outer ring of the hydrogen storage device 6 is a phase-change heat storage material, the inside of the hydrogen storage device 6 is a pressure container and is provided with a magnesium-based solid hydrogen storage material, the heat is transferred to the working medium of the third working medium pipeline 34 through the heat pump system and is used for heating the phase-change heat storage material in the outer ring of the hydrogen storage device 6, so that the temperature and the pressure in the pressure container in the inner ring of the hydrogen storage device 6 are increased, the hydrogen absorption rate of the magnesium-based hydrogen storage material is improved, the device utilizes the waste heat generated in the cell stack reaction process as the driving heat source, and a heat pump device is used for further improving the heat quality and heating the alloy material or organic liquid hydrogen storage device to provide the temperature and pressure required by the container.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A heat pump system for recovering waste heat of a fuel cell power generation system, comprising a fuel cell (1) and a water tank (2), characterized in that: the left side wall of the water tank (2) is fixedly communicated with a first water pump (3), the water inlet end of the first water pump (3) is positioned in the water tank (2), the water outlet end of the first water pump (3) is fixedly communicated with a water outlet pipe (4), the upper end of the water outlet pipe (4) penetrates through the side wall of the fuel cell (1) and is communicated with the plate heat exchanger inside the fuel cell (1) and the water outlet end of the plate heat exchanger is fixedly communicated with a water return pipe (5), the lower end of the water return pipe (5) is fixedly communicated with the upper side wall of the water tank (2), the right side wall of the water tank (2) is fixedly communicated with a second water pump (8), the water inlet end of the second water pump (8) is fixedly communicated with the side wall of the water tank (2), the water outlet end of the second water pump (8) is fixedly communicated with a radiating pipe (9), and an evaporator (28) is placed on the right side of the water tank (2), the right-hand member of cooling tube (9) passes evaporimeter (28) and communicates with the right side wall of water tank (2) is fixed, the top of evaporimeter (28) is equipped with condenser (29), the intercommunication has first working medium pipeline (32) and second working medium pipeline (33) between condenser (29) and evaporimeter (28), first working medium pipeline (32) and second working medium pipeline (33) are equipped with compressor (30) and thermal expansion valve (31) outward, the top of condenser (29) is equipped with hydrogen storage device (6), the intercommunication has two third working medium pipelines (34) between hydrogen storage device (6) and condenser (29), the intercommunication has same one piece of hydrogen transmission pipeline (25) between hydrogen storage device (6) and fuel cell (1), the last side wall of hydrogen storage device (6) is fixed to be communicated with and is advanced hydrogen pipeline (7).
2. The heat pump system for recovering residual heat of a fuel cell power generation system according to claim 1, characterized in that: two connecting rods (11) of right side wall fixedly connected with of water tank (2), the same root cartridge filter (12) of right-hand member fixedly connected with of two connecting rods (11), it has filter plate board (13) to peg graft in cartridge filter (12), cartridge filter (12) set up in cooling tube (9).
3. The heat pump system for recovering residual heat of a fuel cell power generation system according to claim 2, characterized in that: filter cartridge filter (12) and fixedly connected with diaphragm (14) are stretched out to the last lateral wall of filter plate (13), two locating plate (15) of the lower lateral wall symmetry fixedly connected with of diaphragm (14), two spacing groove (16) and spacing groove (16) interpolation have all been seted up on locating plate (15) lateral wall in opposite directions have been connected with limiting plate (17), equal fixedly connected with latch (18) on limiting plate (17) and cartridge filter (12) lateral wall in opposite directions, the lateral wall fixedly connected with horizontal pole (19) of limiting plate (17), the one end fixedly connected with arm-tie (20) that the spacing groove (16) was stretched out in horizontal pole (19), the same spring (21) of lateral wall fixedly connected with between arm-tie (20) and locating plate (15).
4. A heat pump system for recovering residual heat of a fuel cell power generation system according to claim 3, characterized in that: the side wall of the pulling plate (20) is fixedly connected with a pulling ring (22).
5. A heat pump system for recovering residual heat of a fuel cell power generation system according to claim 3, characterized in that: two rubber rings (23) are fixedly sleeved on the outer wall of the filter screen plate (13).
6. A heat pump system for recovering residual heat of a fuel cell power generation system according to claim 3, characterized in that: the upper side wall of the transverse plate (14) is fixedly connected with a handle (24).
7. A heat pump system for recovering residual heat of a fuel cell power generation system according to claim 3, characterized in that: the spring (21) is a copper alloy spring.
8. The heat pump system for recovering residual heat of a fuel cell power generation system according to claim 1, characterized in that: the inner wall of water tank (2) is fixedly connected with two level sensors (26), the right side wall of water tank (2) is fixedly communicated with a water injection pipe (27), and the lower side wall of water tank (2) is fixedly communicated with a hot water supply pipe (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210110213.4A CN114135923A (en) | 2022-01-29 | 2022-01-29 | Heat pump system for recovering waste heat of fuel cell power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210110213.4A CN114135923A (en) | 2022-01-29 | 2022-01-29 | Heat pump system for recovering waste heat of fuel cell power generation system |
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| CN114135923A true CN114135923A (en) | 2022-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210110213.4A Pending CN114135923A (en) | 2022-01-29 | 2022-01-29 | Heat pump system for recovering waste heat of fuel cell power generation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114883589A (en) * | 2022-05-24 | 2022-08-09 | 江苏科技大学 | Waste heat recycling device for hydrogen fuel cell power ship |
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| CN106871483A (en) * | 2017-03-31 | 2017-06-20 | 武汉地质资源环境工业技术研究院有限公司 | A kind of Hydrogen Energy and the complementary heat pump of solar energy |
| CN110067678A (en) * | 2018-01-22 | 2019-07-30 | 西安召世贸易有限公司 | A kind of air filtration core being conveniently replaceable |
| CN112797663A (en) * | 2021-02-26 | 2021-05-14 | 天津城建大学 | Building distributed energy supply system based on hydrogen fuel cell and operation method |
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2022
- 2022-01-29 CN CN202210110213.4A patent/CN114135923A/en active Pending
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| JP2004259615A (en) * | 2003-02-26 | 2004-09-16 | Denso Corp | Cooling device for fuel cell |
| US20050022550A1 (en) * | 2003-02-26 | 2005-02-03 | Keiichi Yoshii | Cooling apparatus for fuel cell utilizing air conditioning system |
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| CN106871483A (en) * | 2017-03-31 | 2017-06-20 | 武汉地质资源环境工业技术研究院有限公司 | A kind of Hydrogen Energy and the complementary heat pump of solar energy |
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| CN114883589A (en) * | 2022-05-24 | 2022-08-09 | 江苏科技大学 | Waste heat recycling device for hydrogen fuel cell power ship |
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Application publication date: 20220304 |