JP4346055B2 - Hydrogen supply system for equipment using hydrogen as fuel - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hydrogen supply system for equipment using hydrogen as a fuel, and in particular, a hydrogen supply system including a reformer that generates hydrogen from raw materials such as alcohol and gasoline in order to supply hydrogen to equipment using hydrogen as a fuel. About.
[0002]
[Related technologies]
The present applicant previously has a hydrogen storage system capable of occluding and releasing hydrogen generated by the reformer as a hydrogen supply system that can cope with the response delay of the reformer, The hydrogen storage device includes a first storage unit including a first hydrogen storage material that easily stores hydrogen, and a second storage unit including a second hydrogen storage material that easily releases hydrogen. First, the hydrogen from the reformer is occluded, and then the hydrogen obtained by releasing the occluded hydrogen is moved to the second storage unit for occlusion, and the occluded hydrogen is released from the second storage unit at the time of starting the equipment. In this case, a device is proposed which is supplied to the device (see Japanese Patent Application No. 11-164939 and drawings). This hydrogen supply system was developed mainly for in-vehicle use.
[0003]
[Problems to be solved by the invention]
However, in the prior art, when transferring hydrogen from the first storage unit to the second storage unit, the first storage unit is heated to about 60 ° C, while the temperature of the second storage unit is kept at 40-50 ° C. However, since the hydrogen discharge pressure of the first storage unit is low and it is difficult to keep the temperature of the second storage unit in the above range during actual vehicle travel, the transfer of hydrogen to the second storage unit is difficult. There is a problem in that it cannot be performed quickly and sufficiently.
[0004]
[Means for Solving the Problems]
The present invention provides the above-described hydrogen supply system capable of quickly and sufficiently transferring hydrogen from the first storage unit to the second storage unit and releasing hydrogen from the second storage unit at a low temperature. The purpose is to do.
[0005]
In order to achieve the above object, according to the present invention, in a hydrogen supply system comprising a reformer that generates hydrogen from a raw material such as alcohol or gasoline in order to supply hydrogen to a device using hydrogen as a fuel, the reforming is performed. A hydrogen storage device capable of storing and releasing hydrogen generated by the vessel, the hydrogen storage device comprising a first storage unit comprising a low-pressure storage / high-temperature release type first hydrogen storage material; A second storage part having a high-pressure storage / low-temperature release type second hydrogen storage material, wherein the hydrogen storage pressure of the first hydrogen storage material is P1, and the hydrogen release temperature is T1, while the first storage 2 When the hydrogen storage pressure of the hydrogen storage material is P2 and the hydrogen release temperature is T2, the relationship P1 <P2 and T1> T2 is established, and the hydrogen from the reformer is supplied to the first storage unit. It is obtained by occluding and then releasing the stored hydrogen. Move the hydrogen to the second storage unit is occluded, during startup of the device to release the occluded hydrogen from said second reservoir, and for supplying to the device, the hydrogen release of the first storage portion As a heat source for use , there is provided a hydrogen supply system for equipment using hydrogen as a fuel, in which the heat discharged from the reformer is used .
[0006]
If comprised as mentioned above, when transferring hydrogen from the 1st storage part to the 2nd storage part, the hydrogen of high discharge pressure from the 1st storage part under high temperature is utilized using the hydrogen release characteristic of the 1st hydrogen storage material. Can be introduced into the second storage section, and the hydrogen can be forcibly and quickly stored in the second hydrogen storage material. On the other hand, hydrogen is released from the second storage unit at a low temperature. Further, the heat discharged from the reformer is used as the heat source for releasing hydrogen in the first storage section, and it is not necessary to add a separate heat source as the heat source for releasing hydrogen in the first storage section. Will improve.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
A hydrogen supply system 1 shown in FIG. 1 is mounted on an electric vehicle using a fuel cell 2 as a power source as a power source.
[0008]
In the hydrogen supply system 1, the reformer 3 generates reformed gas mainly composed of hydrogen from raw materials such as alcohol and gasoline, and the supply side is connected to the reformed gas inlet side of the fuel cell 2. 4 is connected. In the air supply line 5, an air cleaner 6, a supercharger 8 having a motor 7 and an intercooler 9 are installed on the introduction side, and the outlet side is connected to the air inlet side of the fuel cell 2. A first two-way valve V1 is installed near the fuel cell 2 in the supply line 5. A pair of connection terminals of the fuel cell 2 are connected to the vehicle drive motor 11 via a pair of conductors 10, and a pair of connection terminals of a motor driving auxiliary battery 12 are connected to the conductors 10 via a pair of conductors 13. The
[0009]
The reformed gas outlet side and the air outlet side of the fuel cell 2 are connected to the evaporator combustor 16 via the exhaust pipes 14 and 15 respectively, and the second two-way near the combustor 16 of the air exhaust pipe 15. Valve V2 is installed. One outlet side of the methanol tank 18 is connected to one inlet side of the evaporator 17 via a supply line 19, and a pump 20 is installed in the supply line 19. Further, the outlet side of the water tank 21 is connected to the other inlet side of the evaporator 17 through a supply line 22, and a pump 23 is connected to the supply line 22. The outlet side of the evaporator 17 is connected to the introduction side of the reformer 3 through a mixed steam supply pipe 24 made of methanol and moisture. The other outlet side of the methanol tank 18 is connected to a reformer starting combustor 26 via another supply line 25, and the pump 27 and the third second line are sequentially connected to the supply line 25 from the methanol tank 18 side. A direction valve V3 is provided. Further, in the supply line 25, the pump 27 and the third two-way valve V3 are connected to the electric heater catalyzer 29 of the evaporator combustor 16 via another supply line 28, and the electric heater in the supply line 28 is connected. A fourth two-way valve V4 is installed in the vicinity of the catalyzer 29. The reformer starting combustor 26 includes a heating circuit 31 having a glow plug 30, a battery 32 and a switch 33 existing between the glow plug 30 and the battery 32.
[0010]
In order from the reformer 3 side to the reformed gas supply line 4, the fifth two-way valve V5, the CO remover 34, the first three-way valve 3V1, the heat exchanger 35, the second three-way valve 3V2, and the flow meter. 36 is installed. In the air supply line 5, the supply line 37 branched from the upstream side of the first two-way valve V1 in the vicinity of the fuel cell 2 is further branched into three to form a reformer start combustor 26, a reformer 3 and The sixth to eighth two-way valves V6 to V8 are connected to the CO remover 34, in the vicinity of the combustor 26, the reformer 3 and the CO remover 34 in the supply line 37, respectively. Air is used for combustion and temperature control in the combustor 26, and is used for temperature control in the reformer 3. Further, the CO remover 34 converts CO contained in the reformed gas into CO _2. Used to oxidize. The first three-way valve 3 </ b> V <b> 1 existing on the outlet side of the CO remover 34 is connected to the reformed gas discharge conduit 14 of the fuel cell 2 via the first bypass conduit 38.
[0011]
In the reformed gas supply path 4, the second three-way valve 3 </ b> V <b> 2 existing on the downstream side of the heat exchanger 35 and the flow meter 36 and the inlet side of the fuel cell 2 are connected by a second bypass line 39. . In order to the second bypass line 39 from the second three-way valve 3V2 side, a flow meter 40, a heat exchanger 41, a moisture remover 42, a ninth two-way valve V9, a first storage unit 44 of the hydrogen storage 43, A tenth two-way valve V10, a flow meter 45, an eleventh two-way valve V11, and a flow control valve 46 are provided. A heat exchanger 47 is installed between the flow control valve 46 and the eleventh two-way valve V11 to improve the temperature adjustment accuracy as necessary.
[0012]
A heating device 48 is attached to the first storage unit 44. The heating device 48 has a reformed gas distribution pipe 49, and the inlet side of the pipe 49 is connected between the reformer 3 and the fifth two-way valve V 5 in the reformed gas supply pipe 4. The outlet side is connected between the fifth two-way valve V5 and the CO remover 34. A twelfth two-way valve V12 is installed on the inlet side of the pipe line 49.
[0013]
On the downstream side of the first storage unit 44 of the second bypass line 38, the second storage unit 51 of the hydrogen storage unit 43 is connected between the flow meter 45 and the eleventh two-way valve V <b> 11 via the hydrogen supply and discharge line 50. The thirteenth two-way valve V13 and the flow meter 52 are sequentially connected to the supply / discharge conduit 50 from the second storage section 51 side.
[0014]
A heating circuit 56 having a heater 53, a battery 54, and a switch 55, and a cooling circuit 58 having a cooling unit 57 having a radiator, a water pump, a water tank, and the like are attached to the second storage unit 51.
[0015]
The fuel cell 2, the vehicle drive motor 11, the switch 33 of the heating circuit 31 having the glow plug 30, the pumps 20, 23 and 27, the switch 55 of the heating circuit 56 having the heater 53, and the like turn on the start switch 59. Accordingly, the operation is controlled via the ECU 60, while the operation is deactivated by setting the start switch 59 to the OFF state.
[0016]
In the hydrogen storage device 43, it is possible to occlude and release hydrogen generated by the reformer 3. The first storage unit 44 has a so-called through-type tank having an inlet and an outlet. The inlet is on the upstream side of the second bypass conduit 39, and the outlet is on the downstream side of the second bypass conduit 39. The tank is filled with a first hydrogen storage alloy MH1 as a first hydrogen storage material. The 2nd storage part 51 has a normal tank which has an entrance and exit, and the 2nd hydrogen storage alloy MH2 as a 2nd hydrogen storage material is filled in the tank. As shown in FIG. 2, the first hydrogen storage alloy MH1 is a low-pressure storage / high-temperature release type that stores hydrogen at 80 ° C. and 0.15 MPa (P1), while 130 ° C. (T1) and 0.8 MPa. It has the characteristic of releasing hydrogen at As such a hydrogen storage alloy, a LaNi _3.96 Co _0.6 Al _0.44 alloy is used. The second hydrogen storage alloy MH2 is a high pressure storage / low temperature release type that stores hydrogen at 60 ° C. and 0.5 MPa (P2), while releasing hydrogen at 30 ° C. (T2) and 0.15 MPa. Has characteristics. As such a hydrogen storage alloy, MmNi _4.04 Co _0.6 Mn _0.31 Al _0.05 alloy (Mm is Misch metal) is used. Therefore, the relationship of P1 <P2 and T1> T2 is established between the hydrogen storage pressures P1 and P2 and between the hydrogen release temperatures T1 and T2.
[0017]
If comprised as mentioned above, when transferring hydrogen from the 1st storage part 44 to the 2nd storage part 51, it is high at high temperature from the 1st storage part 44 using the hydrogen release characteristic of the 1st hydrogen storage alloy MH1. Hydrogen having a release pressure can be introduced into the second storage unit 51, and the hydrogen can be forcibly and quickly stored in the second hydrogen storage alloy MH2. On the other hand, hydrogen is released from the second storage unit 51 at a low temperature.
[0018]
Next, various modes will be described with reference to FIGS. 1 and 3 to 8.
[0019]
A. Start mode Before the start of this mode, the hydrogen storage amount in the second storage unit 51 of the hydrogen store 43 is in a full state. The first to thirteenth two-way valves V1 to V13 and the flow rate control valve 46 are in the “closed” state, and the first three-way valve 3V1 can supply the reformed gas to the evaporator combustor 16, that is, the combustor. On the other hand, the second three-way valve 3V2 is switched to the first storage unit 44 side so that the reformed gas can be supplied to the first storage unit 44 side.
[0020]
1 and 3, when the start switch 59 is turned on, the supercharger 8 is activated, the air passes through the air cleaner 6, the supercharger 8, and the intercooler 9, and the first two-way valve V1 is "open". The fuel cell 2 is supplied, and the sixth to eighth two-way valves V6 to V8 are “open” and supplied to the combustor 26, the reformer 3 and the CO remover 34 of the reformer 3, respectively. The air discharged from the fuel cell 2 is introduced into the evaporator combustor 16 when the second two-way valve V2 is “open”.
[0021]
When the electric heater catalyzer 29 of the evaporator combustor 16 is energized and its temperature rises, the pump 27 operates and the fourth two-way valve V4 is “open”, and methanol is injected into the electric heater catalyzer 29. Is combusted in the combustor 16 to heat the evaporator 17.
[0022]
The switch 55 of the heating circuit 56 of the second storage unit 51 is closed, and the second storage unit 51 is heated by the heater 53. In this case, it is possible to raise the temperature of the second storage unit 51, and hence the second hydrogen storage alloy MH2, to a hydrogen release temperature of about 30 ° C. in a short time. Then, when the pressure at the inlet / outlet portion of the second storage section 51 is detected and the pressure reaches about 0.15 MPa, the stored hydrogen in the second storage section 51 is released and the thirteenth and eleventh two directions are released. The valves V13 and V11 and the flow control valve 46 are “open”, and the released hydrogen is supplied to the fuel cell 2, which starts operation. The amount of hydrogen supplied from the second storage unit 51 is detected by the flow meter 52. Surplus hydrogen in the fuel cell 2 is introduced into the evaporator combustor 16 where it is burned and used to heat the evaporator 17.
[0023]
In the reformer starting combustor 26, the switch 33 of the heating circuit 31 having the glow plug 30 is closed and the glow plug 30 is energized. When the third two-way valve V3 is “open”, methanol is injected into the combustor 26, and the reformer 3 is heated by the combustion of the methanol. When the gas temperature at the supply port portion of the reformer 3 is detected and reaches a predetermined value, the heating of the reformer 3 is completed, the switch 33 is opened, and the energization to the glow plug 30 is stopped.
[0024]
Methanol and water are injected into the evaporator 17 to generate a mixed steam composed of methanol and moisture, and the mixed steam is supplied to the reformer 3 for reforming.
[0025]
The reformed gas contains a considerable amount of CO, and the fifth two-way valve V5 is “open” and introduced into the CO remover 34, and then the first three-way valve 3V1 is switched to the combustor 16 side. Therefore, it is introduced into the combustor 16 through the first bypass line 38, and combustible components such as hydrogen are combusted there.
[0026]
The CO concentration of the reformed gas is detected, or the CO concentration is checked from the relationship between the reformed gas temperature and the time. When the CO concentration falls below a predetermined value, the first and second three-way valves 3V1, 3V2 It is switched to the fuel cell 2 side, and the reformed gas is supplied to the fuel cell 2.
[0027]
The amount of reformed gas from the reformer 3 during warm-up is not sufficient for operating the fuel cell 2, but the shortage is compensated by the hydrogen released from the second storage unit 51, thereby The output is stabilized. As the reformed gas amount increases, the hydrogen supply amount is gradually controlled to decrease.
[0028]
When the temperature and pressure of the reformed gas at the supply port of the reformer 3 reach about 200 ° C. and about 0.16 MPa, respectively, it is determined that the reformer 3 has reached the steady mode, and the heating circuit 56 The switch 55 is opened, and the thirteenth, eleventh two-way valves V13, V11 and the flow rate control valve 46 on the second storage section 51 side are closed, and thereafter, the operation shifts to the self-sustaining operation mode by the reformer 3.
[0029]
When the reformed gas passes through the heat exchanger 35 in which 50 ° C. cooling water is circulated, the temperature drops to about 80 ° C. and the pressure drops to about 0.15 MPa. Is used as fuel in the fuel cell 2.
[0030]
B. Hydrogen storage / hydrogen transfer mode during steady running As shown in FIGS. 1 and 4, the second three-way valve 3 </ b> V <b> 2 is switched to the first storage unit 44 side with the start of the hydrogen storage mode.
[0031]
The temperature of the reformed gas in the second three-way valve 3V2 is about 80 ° C. and the pressure is about 0.15 MPa. The reformed gas is heated to 60 ° C. by the heat exchanger 41 in which 50 ° C. cooling water is circulated. Then, the moisture is removed by the moisture remover 42.
[0032]
When the ninth two-way valve V9 is “open”, a reformed gas of about 60 ° C. and about 0.15 MPa is introduced into the first storage unit 44, and the hydrogen is stored in the first hydrogen storage alloy MH1. By this occlusion, the alloy MH1 is heated to about 80 ° C., and this temperature is maintained by the cooling action of the reformed gas at about 60 ° C.
[0033]
The reformed gas that has passed through the first storage unit 44 is supplied to the fuel cell 2 with the tenth and eleventh two-way valves V10 and V11 and the flow rate control valve 46 open, and the operation is continued.
[0034]
The amount of hydrogen occluded in the first storage unit 44 is detected based on the difference between the integrated flow rates of the flow meters 40 and 45 on the inlet and outlet sides of the first storage unit 44. If the hydrogen storage amount of the first storage unit 44 has not reached the full state, the storage process is continued.
[0035]
When the hydrogen storage amount of the first storage unit 44 reaches a full state, the second three-way valve 3V2 is switched to the fuel cell 2 side to shift to the hydrogen transfer mode.
[0036]
When the ninth and eleventh two-way valves V9 and V11 are “closed” and the tenth and thirteenth two-way valves V10 and V13 are “open”, hydrogen can be moved. Further, after the twelfth two-way valve V12 is “open” and the fifth two-way valve V5 is “closed” and high-temperature reformed gas of about 200 ° C. flows through the heating device 48, the CO remover 34, heat exchange It is supplied to the fuel cell 2 through the vessel 35 and the like, and its operation is continued.
[0037]
As described above, when the first hydrogen storage alloy MH1 in the first storage unit 44 is heated by the exhaust heat of the reformer 3 and the temperature rises to about 130 ° C. and the pressure rises to about 0.8 MPa, the stored hydrogen is released. The
[0038]
The second hydrogen storage alloy MH2 in the second storage unit 51 is heated to about 60 ° C. by the heating circuit 56, and the hydrogen released from the first storage unit 44 is stored in the second hydrogen storage alloy MH2 at 60 ° C. and about 0.5 MPa. Is done. The temperature rise of the alloy MH2 due to the occlusion is suppressed by the cooling circuit 58, and the temperature is maintained at about 60 ° C.
[0039]
When the flow meter 45 located on the outlet side of the first storage unit 44 detects that the hydrogen release amount of the first storage unit 44 exceeds 70% of the full amount, the fifth two-way valve V5 is When “open” and the twelfth two-way valve V12 is “closed”, the heating of the first storage unit 44 is stopped. From the 1st storage part 44, discharge | release of hydrogen is continued by the endothermic reaction of the 1st hydrogen storage alloy MH1 using the residual heat. Thereby, the temperature of the 1st storage part 44 can be lowered | hung and the time lag at the time of restarting the next hydrogen storage mode can be reduced.
[0040]
When the integrated flow rate of the flow meter 45 on the outlet side of the first storage unit 44 reaches the full amount of the storage unit 44, the thirteenth two-way valve V13 is “closed” and the second storage unit 51 is closed. The hydrogen transfer to is stopped. At this time, the hydrogen storage amount in the second storage unit 51 is full.
[0041]
C. Acceleration mode As shown in FIGS. 1 and 5, when the accelerator operation amount exceeds a predetermined value, the mode is shifted to the acceleration mode, and the mixed steam (methanol and moisture) to the reformer 3 is increased.
[0042]
It is detected whether or not the hydrogen storage amount in the first storage unit 44 is full. If it is not full and the hydrogen storage mode is being executed, the second three-way valve 3V2 is switched to the fuel cell 2 side. In addition, the eleventh two-way valve V11 is “closed”. That is, during acceleration, all the reformed gas is supplied to the fuel cell 2 and hydrogen storage is not performed.
[0043]
If the hydrogen storage amount in the first storage unit 44 is full, the second three-way valve 3V2 is in the state switched to the fuel cell 2 side, so that state is maintained.
[0044]
The acceleration mode ends when the accelerator operation amount becomes equal to or less than a predetermined value.
[0045]
D. Deceleration Mode As shown in FIGS. 1 and 6, when the accelerator operation amount falls below a predetermined value, the mode shifts to the deceleration mode, and the mixed steam (methanol and moisture) to the reformer 3 is reduced.
[0046]
It is determined whether or not the second three-way valve 3V2 is switched to the first storage unit 44 side. If not, it is determined whether or not the hydrogen transfer mode is being executed, and the hydrogen transfer mode is executed. If not, the second three-way valve 3V2 is switched to the first storage unit 44 side, and excess hydrogen is stored in the first storage unit 44.
[0047]
The deceleration mode ends when the accelerator operation amount becomes equal to or greater than a predetermined value.
[0048]
On the other hand, when the second three-way valve 3V2 is switched to the fuel cell 2 side from the beginning and the hydrogen transfer mode is executed, the switching state of the second three-way valve 3V2 to the fuel cell 2 side is maintained. The
[0049]
E. Idling Mode As shown in FIGS. 1 and 7, when the accelerator operation amount is zero, the idling mode is entered, and the amount of mixed steam (methanol and moisture) to the reformer 3 is adjusted to the idling state.
[0050]
It is determined whether or not the second three-way valve 3V2 is switched to the first storage unit 44 side. If not, it is determined whether or not the hydrogen transfer mode is being executed, and the hydrogen transfer mode is executed. If not, it is determined whether or not the reformed gas amount is the minimum required amount. If the reformed gas amount is not the minimum required amount, the second three-way valve 3V2 is switched to the first storage unit 44 side, and the excess hydrogen is stored in the first storage. The portion 44 is occluded.
[0051]
When the accelerator operation is performed, the idling mode ends.
[0052]
On the other hand, when the second three-way valve 3V2 is switched from the beginning to the fuel cell 2 side and the hydrogen transfer mode is executed, and when the amount of reformed gas is the minimum necessary amount, the second three-way valve The state of switching to the 3V2 fuel cell 2 side is maintained.
[0053]
F. Stop Mode When the start switch 59 is turned off as shown in FIGS. 1 and 8, the supply of the mixed steam (methanol and moisture) to the reformer 3 is stopped.
[0054]
After the second three-way valve 3V2 is switched to the first storage unit 44 side and the mixed steam supply is stopped, surplus hydrogen generated by the residual mixed steam of the reformer 3 is occluded in the first storage unit 44. When the reformed gas flow rate becomes a predetermined value or less, the fuel cell 2, the reformer 3, and the like are stopped.
[0055]
An example of the device using hydrogen as a fuel is an internal combustion engine in addition to the fuel cell.
[0056]
【The invention's effect】
According to the present invention, by adopting the above-described means, the transfer of hydrogen from the first storage unit to the second storage unit is performed quickly and sufficiently, and the hydrogen is transferred from the second storage unit at a low temperature. It is possible to provide a hydrogen supply system suitable for in-vehicle use that can be released.
[0057]
Furthermore, since the exhaust heat of the reformer is used as the heat source for releasing hydrogen in the first storage unit, it is not necessary to add a separate heat source as the heat source for releasing hydrogen in the first storage unit, improving the thermal efficiency of the entire system. Can be made.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a hydrogen supply system.
FIG. 2 is a hydrogen absorption / release characteristic diagram of the first and second hydrogen storage alloys.
FIG. 3 is a flowchart of a start mode.
FIG. 4 is a flowchart of a hydrogen storage / hydrogen transfer mode.
FIG. 5 is a flowchart of an acceleration mode.
FIG. 6 is a flowchart of a deceleration mode.
FIG. 7 is a flowchart of an idling mode.
FIG. 8 is a flowchart of a stop mode.
[Explanation of symbols]
1 …………… Hydrogen supply system 2 …………… Fuel cell (equipment)
3 ………… Reformer 43 ………… Hydrogen storage 44 ………… First storage part 51 ………… Second storage part MH1 ………… First hydrogen storage alloy (first hydrogen storage material) )
MH2 ......... Second hydrogen storage alloy (second hydrogen storage material)

Claims (1)

In a hydrogen supply system equipped with a reformer (3) for generating hydrogen from raw materials such as alcohol and gasoline in order to supply hydrogen to a device (2) using hydrogen as a fuel,
It has a hydrogen reservoir (43) capable of occluding and releasing hydrogen produced by the reformer (3), and the hydrogen reservoir (43) is a low-pressure occlusion / high temperature desorption type first A first storage part (44) provided with a hydrogen storage material (MH1) and a second storage part (51) provided with a high-pressure storage / low-temperature release type second hydrogen storage material (MH2); The hydrogen storage pressure of the hydrogen storage material (MH1) is P1, and its hydrogen release temperature is T1, while the hydrogen storage pressure of the second hydrogen storage material (MH2) is P2, and its hydrogen release temperature is T2. Then, the relationship of P1 <P2 and T1> T2 is established, and the first storage section (44) temporarily stores hydrogen from the reformer (3) and then releases the stored hydrogen. The stored hydrogen is moved to the second storage part (51) to be occluded, and the device (2) is started. Sometimes by releasing from occluded hydrogen the second reservoir (51), and for supplying to the device (2), said reformer as a hydrogen releasing heat source of the first reservoir (44) (3) discharge heat is characterized in that it is used in the hydrogen supply system to the equipment using hydrogen as fuel.

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