JP2020123510A - Fuel cell system - Google Patents

Abstract

To effectively use thermal energy in a fuel cell system from the viewpoint different from heat generated by the power generation of a fuel cell.SOLUTION: The fuel cell system comprises: a fuel cell that generates electricity by electrochemical reaction between hydrogen and oxygen; a hydrogen storage tank that stores hydrogen to be supplied to the fuel cell; a gas supply system that includes a gas pressure adjusting mechanism and supplies hydrogen stored in the hydrogen storage tank to the fuel cell as hydrogen gas with pressure having been adjusted by the pressure adjusting mechanism; and a heat exchange device that is connected to the pressure adjusting mechanism and exchanges heat associated with gas pressure regulation in the pressure adjusting mechanism, between the heat exchange device and the pressure adjusting mechanism.SELECTED DRAWING: Figure 1

Description

The present invention relates to a fuel cell system.

With the spread of fuel cells, there has been proposed a method of effectively utilizing thermal energy generated by the power generation operation of the fuel cell (for example, Patent Document 1).

JP, 2001-135321, A

The use of heat by the method proposed in Patent Document 1 is limited to the use of heat energy associated with power generation of the fuel cell, and therefore there is room for effective use of heat energy from another viewpoint in the fuel cell system.

The present invention can be realized as the following modes.

(1) According to one aspect of the present invention, a fuel cell system is provided. This fuel cell system includes a fuel cell that generates electricity by an electrochemical reaction of hydrogen and oxygen, a hydrogen storage tank that stores the hydrogen supplied to the fuel cell, and a gas pressure adjusting mechanism, and the hydrogen storage tank stores the hydrogen. A gas supply system for supplying hydrogen to the fuel cell as hydrogen gas whose pressure has been adjusted by the pressure adjusting mechanism, and the pressure adjusting mechanism that is connected to the pressure adjusting mechanism to generate heat associated with the gas pressure adjusting in the pressure adjusting mechanism. And a heat exchange device that exchanges heat with the pressure mechanism. According to the fuel cell system of this aspect, the thermal energy that accompanies the gas pressure regulation in the pressure regulating mechanism can be effectively utilized for air conditioning and the like in the facility where the fuel cell system is installed.

The present invention can be implemented in various modes. For example, it can be realized in the form of an operation control method of the fuel cell system.

It is explanatory drawing which shows schematic structure of the fuel cell system which concerns on 1st Embodiment of this invention. It is explanatory drawing which shows schematic structure of the fuel cell system which concerns on 2nd Embodiment. It is explanatory drawing which shows schematic structure of the fuel cell system which concerns on 3rd Embodiment.

FIG. 1 is an explanatory diagram showing a schematic configuration of a fuel cell system 100 according to the first embodiment of the present invention. The fuel cell system 100 is installed in various facilities such as supermarkets, convenience stores, retail stores, and department stores, as well as public and private facilities such as city halls, schools, gymnasiums, libraries, and halls. The thermal energy of the fuel cell system 100 is utilized during the cold air operation of the cool air equipment and the warm up operation of the warm air equipment in S. The cool air equipment includes coolers for air conditioning and heating, and various refrigerators used for refrigerating food products.The warm air equipment includes coolers for air conditioning and heating and hot water supply that provides hot beverages such as hot coffee and hot tea. Includes containers and warm storage.

The fuel cell system 100 includes a fuel cell 10, a hydrogen storage tank 20, a gas supply system 30, an air supply device 50, and a heat exchange device 60. The fuel cell 10 receives supply of hydrogen gas and air, and causes an electrochemical reaction between hydrogen in hydrogen gas and oxygen in air to generate electricity. The electric power generated by the fuel cell 10 is stored in a secondary battery (not shown) or used as driving power for various electric devices such as a lighter (not shown) and an automatic door in addition to the cooler 200 and the refrigerator 300 (described later) in the facility S.

The hydrogen storage tank 20 is a metal tank such as stainless steel, and is installed outside the facility of the various facilities described above or in a tank housing chamber near the outer wall of the facility, and supplies hydrogen supplied to the fuel cell 10 with high pressure. Store as hydrogen gas. The fuel cell system 100 according to the present embodiment includes the hydrogen storage tank 20 as a cylindrical tank having a diameter of about 2 m so that hydrogen gas of about 23 MPa to about 23 to 47 kL can be stored. The hydrogen storage tank 20 is installed in the tank storage chamber so that the longitudinal direction is the vertical direction. This hydrogen storage tank 20 is provided with a tank fitting 21 with a built-in pipeline opening/closing valve in the upper part in the vertical direction, and through this tank fitting 21, a pressure adjusting mechanism 40 and a first gas included in a gas supply system 30 described later are connected. They are connected by a supply line 31. The conduit opening/closing valve built in the tank fitting 21 is controlled by a control device (not shown) to open the first gas supply conduit 31 when the gas is led to the pressure regulating mechanism 40, and when the tank is replaced. The first gas supply line 31 is closed.

The gas supply system 30 includes a first gas supply pipeline 31, a second gas supply pipeline 32, and a pressure adjusting mechanism 40. The first gas supply conduit 31 is a gas supply pipe that connects the hydrogen storage tank 20 and the pressure adjusting mechanism 40 as described above. The second gas supply conduit 32 is a gas supply pipe that connects the pressure regulating mechanism 40 and the fuel cell 10, and supplies hydrogen gas whose pressure has been regulated by the pressure regulating mechanism 40 to the fuel cell 10. A flow rate adjusting valve (not shown) is incorporated in the second gas supply pipe 32, and the valve adjusts the amount of hydrogen gas supplied to the fuel cell 10.

The pressure regulating mechanism 40 regulates (decompresses) the high-pressure (70 MPa) hydrogen gas stored in the hydrogen storage tank 20 to an appropriate supply pressure (for example, 10 to 20 MPa) of the fuel cell 10. Then, the gas supply system 30 supplies the hydrogen gas whose pressure has been reduced by the pressure adjusting mechanism 40 to the fuel cell 10 via the second gas supply pipe 32.

The air supply device 50 supplies the air compressed by a compressor (not shown) to the fuel cell 10 via the air supply pipe line 51. A flow rate adjusting valve (not shown) is incorporated in the air supply pipe line 51, and the air supply amount to the fuel cell 10 is adjusted by the valve.

The heat exchange device 60 includes a first medium circulation pipeline 61 and a second medium circulation pipeline 62. The first medium circulation pipeline 61 includes a first heat exchange pipeline section 61a and a second heat exchange pipeline section 61b, and the second medium circulation pipeline 62 includes a first heat exchange pipeline section 62a and a second heat exchange pipeline section 62a. An exchange conduit 62b is provided. The first and second heat exchange conduit portions of both circulation conduits are separated from each other. The heat exchange device 60 is connected to the pressure adjusting mechanism 40 by incorporating the first heat exchange conduit portion 61 a of the first medium circulation conduit 61 into the pressure adjusting mechanism 40. The first heat exchange conduit 61a is arranged in the pressure reducing mechanism for reducing the pressure of the pressure regulating mechanism 40, and is involved in heat exchange associated with gas pressure regulation in the pressure regulating mechanism 40. In the present embodiment, since the gas pressure regulation in the pressure regulating mechanism 40 is decompression, the medium that recirculates in the first medium circulation conduit 61 is the pressure reducing mechanism of the pressure regulating mechanism 40 in the first heat exchange conduit 61a. Cooled by the section. As a result, heat is exchanged with the pressure adjusting mechanism 40 in the first heat exchange conduit 61a. The heat exchange device 60 circulates and recirculates the cooled medium in the first heat exchange conduit 61 a by the media pump 63 incorporated in the first media circulation conduit 61 in the first media circulation conduit 61. In the heat exchange device 60, the second heat exchange conduit 61b of the first medium circulation conduit 61 is arranged in the vicinity of the first heat exchange conduit 62a of the second medium circulation conduit 62, so that the first medium Heat exchange is also performed between the circulation conduit 61 and the second medium circulation conduit 62. As a result, the medium in the second medium circulation conduit 62 is cooled in the first heat exchange conduit 62a. The heat exchange device 60 circulates and recirculates the cooled medium in the first heat exchange conduit 62 a in the second medium circulation conduit 62 by the medium pump 64 incorporated in the second medium circulation conduit 62.

The heat exchange device 60 includes a second medium circulation pipeline 62 that leads to the cooler 200 for cooling and heating and air conditioning of the facility S, and branches from the second medium circulation pipeline 62 to the food product refrigerator 300 of the facility S. A branch medium circulation line 65 is provided. The second heat exchange conduit 62b is incorporated in the air conditioning mechanism 210 so as to exchange heat with the medium of the cooler 200 in the medium retention conduit 212 of the air conditioning mechanism 210 of the cooler 200. In addition, the heat exchange conduit 62 c of the branch medium circulation conduit 65 is incorporated in the air conditioning mechanism 310 so as to exchange heat with the medium of the refrigerator 300 in the medium retention conduit 312 of the air conditioning mechanism 310 of the refrigerator 300. Has been.

The cooler 200 is a medium circulation pipeline 214 having a medium retention pipeline 212 partially as a pipeline, and circulates the medium at a cooling request time such as summer, while cooling the circulating medium by a heat exchange mechanism (not shown). To do. The air in the air conditioning mechanism 210 is cooled by the cooled medium that circulates in the medium circulation conduit 214, so that the cooled air is blown out from the blower port 216. Cooling and air conditioning of the facility S is performed by blowing out the cooled air. Further, the cooler 200 circulates the medium in the medium circulation pipe 214 at the time of heating request such as winter, and warms the circulated medium by the heat exchange mechanism section. The air in the air conditioning mechanism 210 is warmed by the warmed medium that circulates in the medium circulation pipe 214, and the warmed air is blown out from the blower port 216 to perform the heating and air conditioning of the facility S.

The heat exchange device 60 includes a conduit opening/closing bubble 62v in the second medium circulation conduit 62, and this conduit opening/closing bubble 62v is driven so as to close the conduit at the time of warming request. Therefore, as described above, the cooled medium in the second medium circulation pipeline 62 cooled by the heat exchange between the first medium circulation pipeline 61 and the second medium circulation pipeline 62 is: It does not flow into the cooler 200, but circulates and recirculates in the branch medium circulation pipeline 65. On the other hand, at the cooling request time, the pipeline opening/closing bubble 62v is driven so as to open the pipeline, so the cooled medium in the second medium circulation pipeline 62 flows into the cooler 200, and in the medium retention pipeline 212. The medium circulating in the medium circulation pipe 214 is cooled separately from the medium cooling by the cooler itself.

In the refrigerator 300, the medium circulation pipeline 314 having the medium retention pipeline 312 as a partial pipeline circulates the cooled medium for a whole year, while cooling the circulating medium by a heat exchange mechanism unit (not shown). The air in the air conditioning mechanism 310 is cooled by the cooled medium that circulates in the medium circulation pipe 314, and the cooled air is blown out from the blower port 316 to cool the food item. Therefore, as described above, the cooled medium in the second medium circulation pipeline 62 cooled by the heat exchange between the first medium circulation pipeline 61 and the second medium circulation pipeline 62 is a branched medium throughout the year. The medium that flows into the refrigerator 300 via the circulation pipe 65 and circulates in the medium retention pipe portion 314 in the medium circulation pipe 314 is cooled separately from the medium cooling by the refrigerator itself.

As described above, in the fuel cell system 100 of the present embodiment, when the hydrogen gas is supplied to the fuel cell 10, the pressure adjustment mechanism 40 performs pressure adjustment (pressure reduction) to a gas pressure suitable for gas supply. Then, in the fuel cell system 100 of the present embodiment, the medium of the first medium circulation pipeline 61 and the medium of the second medium circulation pipeline 62 are exchanged by the heat exchange device 60 that exchanges heat with the pressure adjusting mechanism 40 that performs pressure reduction. The cooled medium is used for cooling the refrigerant in the cooler 200 and the refrigerator 300, separately from the cooling of the medium by the cooler itself and the cooling of the refrigerant by the refrigerator itself. As a result, according to the fuel cell system 100 of the present embodiment, the thermal energy associated with the pressure reduction in the pressure adjusting mechanism 40 can be effectively utilized for the cooling and air conditioning of the facility S and the cooling of food.

The fuel cell system 100 of the present embodiment does not send the cooled medium to the cooler 200 at the heating request time, and therefore does not hinder the heating and air conditioning by the cooler 200.

In the fuel cell system 100 of the present embodiment, the heat exchange device 60 has a first medium circulation pipe line 61 and a second medium circulation pipe line 62 capable of heat exchange, and the second medium circulation pipe line 62 has a second medium circulation pipe line 62. The heat exchange conduit 62b was incorporated in a cooler device such as the cooler 200. Since the second medium circulation pipeline 62 can be formed separately from the first medium circulation pipeline 61, the versatility of the arrangement position of the second heat exchange pipeline section 62b is enhanced, and various positions in the facility S are increased. It becomes easy to install the pipeline to the cold air equipment. It should be noted that the second medium circulation pipeline 62 may be omitted and the second heat exchange pipeline 61b of the first medium circulation pipeline 61 may be incorporated into a cooler device such as the cooler 200.

FIG. 2 is an explanatory diagram showing a schematic configuration of the fuel cell system 100A according to the second embodiment. The fuel cell system 100A according to the second embodiment is that the hydrogen storage tank 20 stores liquid hydrogen and that the pressure regulating mechanism 40 pressurizes the gas pressure, and thus the fuel cell system 100 according to the first embodiment described above. Is different from. In the following description, the same reference numerals as in the first embodiment are used for the same members.

The hydrogen storage tank 20 is filled with liquid hydrogen by a liquid hydrogen delivery vehicle (not shown) or the like, and stores the liquid hydrogen. A receptacle (not shown) is incorporated in the tank fitting 21, and liquid hydrogen is loaded from the liquid hydrogen delivery vehicle through the receptacle.

In the hydrogen storage tank 20, the hydrogen gas vaporized in the tank is stored in the upper portion of the tank, and the vaporized hydrogen gas flows into the pressure adjusting mechanism 40 via the first gas supply pipeline 31. The gas pressure of the vaporized hydrogen gas in the tank is lower than the supply pressure to the fuel cell 10. Therefore, the pressure regulating mechanism 40 of the present embodiment regulates (pressurizes) the fuel cell 10 to the appropriate supply pressure (10 to 20 MPa), and the pressurized hydrogen gas is passed through the first gas supply pipeline 31. It is sent to the hydrogen gas storage tank 45. The hydrogen gas storage tank 45 is connected to the fuel cell 10 via the second gas supply pipe 32, and supplies the stored hydrogen gas to the fuel cell 10 at the above-mentioned appropriate supply pressure.

The first gas supply conduit 31 is connected to the tank fitting 21 of the hydrogen storage tank 20 from above in the vertical direction as illustrated. Then, the hydrogen gas vaporized in the hydrogen storage tank 20 is stored in the tank upper region on the vertically upper side of the hydrogen storage tank 20 as illustrated. Therefore, the hydrogen gas vaporized in the hydrogen storage tank 20 smoothly flows into the first gas supply pipeline 31 from the upper region in the tank. The vaporized hydrogen gas flowing into the first gas supply pipeline 31 reaches the pressure adjusting mechanism 40 and is pressurized by the pressure adjusting mechanism 40 as described above.

As described above, the fuel cell system 100A of the second embodiment incorporates the first heat exchange conduit portion 61a of the first medium circulation conduit 61 of the heat exchange device 60 into the pressure adjusting mechanism 40 to adjust the pressure. Is connected to. The first heat exchange conduit 61a is disposed in the pressure reducing mechanism for performing the pressure adjustment by the pressure adjusting mechanism 40, and is involved in the gas pressure adjustment in the pressure adjusting mechanism 40, in this embodiment, the heat exchange accompanying the pressurization. .. Since the gas pressure control in the pressure control mechanism 40 is pressurization, the medium flowing back through the first medium circulation pipe line 61 is heated in the first heat exchange pipe line portion 61a. As a result, heat is exchanged with the pressure regulating mechanism 40 in the first heat exchange conduit 61a. The heat exchange device 60 circulates and recirculates the cooled medium in the first heat exchange pipe line portion 61 a by the medium pump 63 in the first medium circulation pipe line 61. The heat exchange device 60 arranges the second heat exchange pipe line portion 61b of the first medium circulation pipe line 61 close to the first heat exchange pipe line portion 62a of the second medium circulation pipe line 62 to perform the first medium circulation. Heat exchange is also performed between the pipe line 61 and the second medium circulation pipe line 62, and the medium of the second medium circulation pipe line 62 is heated in the first heat exchange pipe line portion 62a. The heat exchange device 60 causes the medium pump 64 to circulate and recirculate the heated medium in the first heat exchange conduit 62 a in the second medium circulation conduit 62.

The heat exchange device 60 is provided with the second medium circulation pipe line 62 extending to the water heater 400 of the facility S. The second heat exchange conduit 61b of the second medium circulation conduit 62 is incorporated in the hot water supply pot 402 so as to exchange heat with the drinking water in the hot water supply pot 402 of the water heater 400. As in the first embodiment, the branched medium circulation pipeline 65 branched from the second medium circulation pipeline 62 is extended to the cooler 200 of the facility S so that the heated medium is sent to the cooler 200 at the heating request time. You can

The water heater 400 heats the drinking water stored in the hot water supply pot 402 with a heating coil or the like (not shown) so as to be used for hot tea or hot coffee. Therefore, as described above, the heated medium in the second medium circulation pipeline 62 heated by the heat exchange between the first medium circulation pipeline 61 and the second medium circulation pipeline 62 is always the hot water supply pot 402. In the second heat exchange pipe line portion 62b disposed in, the potable water in the pot is heated separately from the heating by the water heater itself.

In the fuel cell system 100A of the second embodiment described above, when supplying hydrogen gas to the fuel cell 10, the pressure adjusting mechanism 40 performs pressure adjustment (pressurization) to a gas pressure suitable for gas supply. Then, in the fuel cell system 100A of the second embodiment, the first medium circulation pipeline 61 and the second medium circulation pipeline 62 are provided by the heat exchange device 60 that exchanges heat with the pressure adjusting mechanism 40 that performs pressurization. The medium is heated, and the heated medium is used for heating the drinking water in the water heater 400, separately from the heating of the drinking water by the water heater itself. As a result, also in the fuel cell system 100A of the second embodiment, the thermal energy of the heat generated by the pressurization in the pressure regulating mechanism 40 can be effectively utilized for heating the drinking water in the facility S.

FIG. 3 is an explanatory diagram showing a schematic configuration of the fuel cell system 100B according to the third embodiment. The fuel cell system 100B of the third embodiment has been described above in that it has a hydrogen generator 500 that electrolyzes water to generate hydrogen, and a gas compression mechanism 600 that uses the generated hydrogen as compressed hydrogen gas. This is different from the fuel cell system 100 of the first embodiment.

Similar to the fuel cell system 100, the hydrogen storage tank 20 of the fuel cell system 100B stores hydrogen supplied to the fuel cell 10 as high-pressure hydrogen gas. In storing hydrogen gas in the hydrogen storage tank 20, first, hydrogen is generated by the hydrogen generator 500. The generated hydrogen is sent to the gas compression mechanism 600 via the hydrogen supply pipe 601, turned into high-pressure hydrogen gas by the gas compression mechanism 600, and this high-pressure hydrogen gas is filled through the hydrogen supply pipe 601. Note that the opening/closing valve 602 of the hydrogen supply pipe 601 is driven to open the pipe when the hydrogen gas is filled from the gas compression mechanism 600, so that hydrogen is being generated in the hydrogen generator 500 or gas is being compressed in the gas compression mechanism 600. When the gas is not filled and when the hydrogen generator 500 and the gas compression mechanism 600 are not in operation, the pipeline closing drive is performed.

In the fuel cell system 100B of the third embodiment, the heat exchange device 60 described above is connected to the hydrogen generator 500 in order to utilize the thermal energy associated with hydrogen generation in the hydrogen generator 500. More specifically, similar to the connection between the pressure regulating mechanism 40 and the heat exchange device 60 in the above-described first embodiment, the first heat exchange conduit 61a of the first medium circulation conduit 61 is a hydrogen generator. It is incorporated in the hydrogen generator 500 and is disposed in the hydrogen generation mechanism portion of the hydrogen generator 500. As a result, the heat exchange device 60 participates in heat exchange associated with hydrogen generation in the hydrogen generator 500. Since hydrogen generation in the hydrogen generator 500 is accompanied by an endothermic decomposition reaction that decomposes water into hydrogen and oxygen, the medium refluxing in the first medium circulation pipe 61 is hydrogen in the first heat exchange pipe 61a. It is cooled by the hydrogen generation mechanism of the generator 500. As a result, heat exchange with the hydrogen generator 500 occurs in the first heat exchange conduit 61a, and the heat exchange device 60 includes the first heat exchange conduit 61a and the second medium circulation conduit 62. As described above, the cooled medium is utilized for medium cooling separately from the medium cooling of the cool air device itself of the cooler 200 or the refrigerator 300.

Further, in the fuel cell system 100B of the third embodiment, the heat exchange device 60 described above is connected to the gas compression mechanism 600 in order to utilize the thermal energy associated with gas compression in the gas compression mechanism 600. More specifically, similar to the connection between the pressure adjusting mechanism 40 and the heat exchanging device 60 in the above-described first embodiment, the first heat exchange conduit 61a of the first medium circulation conduit 61 is a gas compression mechanism. It is incorporated into 600 and is disposed in the gas compression mechanism section. As a result, the heat exchange device 60 participates in heat exchange associated with gas compression in the gas compression mechanism 600. Since the pressure adjustment in the gas compression mechanism 600 is gas compression, the medium that recirculates in the first medium circulation pipeline 61 is heated by the gas compression mechanism section of the gas compression mechanism 600 in the first heat exchange pipeline 61a. It As a result, heat exchange occurs with the gas compression mechanism 600 in the first heat exchange conduit 61a, and the heat exchange device 60 includes the first heat exchange conduit 61a and the second medium circulation conduit 62. As described above, the heated medium is used for heating the drinking water of the warming device such as the water heater 400 and the medium of the warming device other than the water heater, separately from the heating of the warming device itself.

The present invention is not limited to the above-described embodiments, and can be implemented with various configurations without departing from the spirit of the present invention. For example, the technical features in the embodiments corresponding to the technical features in each mode described in the section of the summary of the invention are to solve some or all of the above problems, or It is possible to appropriately replace or combine them in order to achieve a part or all. If the technical features are not described as essential in the present specification, they can be deleted as appropriate.

In the fuel cell system 100A of the second embodiment, liquid hydrogen is stored in the hydrogen storage tank 20, and vaporized hydrogen gas that is vaporized in the tank and stored in the upper portion of the tank is caused to flow into the pressure adjusting mechanism 40. Since hydrogen vaporization in the tank occurs under adiabatic condition, the upper part of the tank is in a state where heat can be absorbed from the peripheral wall of the tank and its periphery due to the vaporization. Therefore, the first heat exchange conduit 61a of the heat exchange device 60 is attached to the hydrogen storage tank 20 so as to surround the tank wall above the tank of the hydrogen storage tank 20 that stores liquid hydrogen, and the heat exchange device 60 and the hydrogen storage tank are attached. Allow heat exchange with 20. In this way, the circulation medium in the first medium circulation pipe 61 is cooled by heat exchange due to hydrogen vaporization in the tank, and the cooled medium is used as various cold air devices such as the hydrogen storage tank 20 and the refrigerator 300. In addition to the medium cooling of, it can be utilized for medium cooling.

10... Fuel cell, 20... Hydrogen storage tank, 21... Tank metal fitting, 30... Gas supply system, 31... First gas supply pipeline, 32... Second gas supply pipeline, 40... Pressure adjusting mechanism, 45... Hydrogen gas Storage tank, 50... Air supply equipment, 51... Air supply pipeline, 60... Heat exchange equipment, 61... First medium circulation pipeline, 61a... First heat exchange pipeline, 61b... Second heat exchange pipeline , 62... Second medium circulation pipeline, 62a... First heat exchange pipeline, 62b... Second heat exchange pipeline, 62c... Heat exchange pipeline, 62v... Pipe opening/closing bubble, 63... Medium pump, 64... Medium pump, 65... Branched medium circulation pipeline, 100, 100A, 100B... Fuel cell system, 200... Cooler, 210... Air conditioning mechanism section, 212... Medium retention pipeline section, 214... Medium circulation pipeline, 216... Blower, 300... Refrigerator, 310... Air conditioning mechanism section, 312... Medium retention pipeline section, 314... Medium circulation pipeline, 316... Blower opening, 400... Water heater, 402... Hot water supply pot, 500... Hydrogen generator, 600 … Gas compression mechanism, 601… Hydrogen supply pipe, 602… Open/close valve, S… Facility

Claims (1)

A fuel cell system,
A fuel cell that generates electricity by an electrochemical reaction of hydrogen and oxygen;
A hydrogen storage tank for storing the hydrogen supplied to the fuel cell;
A gas supply system that includes a gas pressure adjusting mechanism and supplies hydrogen stored in the hydrogen storage tank to the fuel cell as hydrogen gas whose pressure has been adjusted by the pressure adjusting mechanism.
A heat exchange device that is connected to the pressure regulating mechanism and exchanges heat associated with gas pressure regulation in the pressure regulating mechanism with the pressure regulating mechanism;
Fuel cell system.

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