JP2002081792A - Fuel cell heat pump system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fuel cell heat pump system having a fuel cell system and a heat pump system that are more organically combined with each other. SOLUTION: The fuel cell heat pump system comprises the fuel cell system comprising a fuel cell, a cooling supply and a cooling discharge. Further the system has the heat pump system for performing power supply and utilizing exhaust heat, a compressor supplied with power, a radiator, an expansion device, and an evaporator using a natural refrigerant. In the fuel cell heat pump system, at least either the cooling discharge part and the evaporator or the cooling supply part and the radiator are thermally connected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat pump system using a fuel cell for the purpose of simultaneously utilizing power generation and exhaust heat of an environmental conservation type.

[0002]

2. Description of the Related Art An outline of a fuel cell system which has been proposed in the past for the purpose of simultaneously using environmentally friendly power generation and waste heat will be described. Fuel cell systems have attracted attention not only for homes and buildings, but also for wheel-driven vehicles.

FIG. 4 shows an example of a conventionally proposed fuel cell system A using a polymer electrolyte for residential use. In the fuel cell system A using the polymer electrolyte, the fuel cell 44 has a catalytic reaction mainly composed of a carbon powder carrying a platinum-based metal catalyst on both surfaces of a polymer electrolyte membrane for selectively transporting hydrogen ions. A layer is formed and used.

[0004] In FIG. 4, reference numeral 42 denotes a hydrogen generator required other than when hydrogen is used as a fuel, and a blower for increasing pressure using a hydrocarbon such as city gas, natural gas or LPG or an alcohol such as methanol as a raw material. After 41-1,
Moisture is added by the humidifier 43-1 and is blown into the hydrogen generator 42 in the closed path. In the hydrogen generator 42, air for combustion is added, and hydrogen and carbon dioxide are generated by a reforming reaction.

The hydrogen containing excessive amounts of carbon dioxide and water generated in the hydrogen generator 42 is supplied to a fuel cell 44.
The oxidizing gas supplied to the fuel cell 44 is supplied to the blower 41-
2 introduce air. In the case of the phosphoric acid type fuel cell, it is not always necessary, but in the case of the polymer electrolyte type fuel cell 44, the humidifier 43-2 also humidifies the air side in order to promote the movement of the generated electrons. In introducing air, in a pressurized fuel cell system A used for automobiles or the like to promote a reaction, an air compressor is used as the blower 41-2.

[0006] In the fuel cell 44, only the hydrogen ions move through the polymer electrolyte membrane using the above-mentioned hydrogen as a fuel.
An oxidation reaction occurs with oxygen ions in the air to generate power, and water is generated on the air side. In the fuel cell 44, the fuel hydrogen and air do not directly mix.

[0007] The unreacted air and evaporated water discharged from the fuel cell 44 are discharged outside the machine. Unreacted hydrogen containing carbon dioxide and excess water is cooled and dehumidified by air as a cooling heat source in the condenser 45, and the separated unreacted hydrogen is sent to the hydrogen generator 42 and collected. The condensed water is sent to the humidifier 43-1 and used for fuel reforming and fuel-side humidification.

Here, since the fuel cell system A uses hydrogen as fuel, an explosion-proof safety device such as detection of leakage from the fuel cell system A and safety protection to prevent explosive flammability of hydrogen due to leakage from a closed passage. Is applied.

Since the fuel cell 44 generates heat during power generation,
To adjust this to a temperature suitable for operation, it must be cooled using a cooling supply. When cooling water is used for this purpose, the cooling water is circulated from the regenerator tank 47, which is a cooling supply unit, to the fuel cell 44 through the cooling water circulation unit. After the cooling water circulates through the fuel cell 44 performing the power generation operation, the cooling water becomes high-temperature hot water by utilizing exhaust heat, and is introduced into the heat storage tank 46 which is a cooling / discharging unit.

By supplying the user with the hot water stored in the heat storage tank 46, a heating operation such as a hot water supply operation or a heating operation can be performed. When the fuel cell 44 is a polymer electrolyte fuel cell 44, power is generated at a relatively low temperature, so that it is suitable for a heating operation such as a hot water supply operation or a heating operation.

The cooling water may be circulated through the condenser 45 to recover heat exhausted when condensing the water in the heat storage tank 46.

Further, the regenerator tank 47 and the regenerator tank 46 may be integrally circulated to the fuel cell 44 through the cooling water circulating section while cooling the cooling water in the regenerator tank 46 using air as a cooling heat source.

In the case where air is used for cooling as in a fuel cell system for an automobile, a main cooling supply unit corresponds to a cooling fan.

The fuel cell system A having the above configuration
Requires a so-called warm-up time from the start of the system to the start of supply of electric power and hot water.
Further, even when the system is stopped, the power generation and the generation of hot water are not stopped instantaneously. That is, the fuel cell system A
The system is insensitive to starting and stopping the system. To compensate for this, the electric power storage unit 410 and the heat storage tank 46 are usually provided.

Further, the electric power generated by the fuel cell 44 and the electric power stored in the electric power storage unit 410 are DC power, and in order to convert the DC power into the same AC power as the commercial power 48, a power conversion unit 49 such as an inverter is used. is necessary. In the case of residential use, when the power load exceeds the power obtained from the fuel cell 44, the shortage can be supplied from the commercial power 48, and in the opposite case, the power can be sold by the reverse power flow.
These are realized by a power system cooperation control unit (not shown) that performs system cooperation between the AC power and the commercial power 48 via the power conversion unit 49.

A system control unit (not shown) is connected to the hydrogen generator 42, the fuel cell 44, the regenerator tank 47, which is a cooling supply unit, the power conversion unit 49, and the power system cooperation control unit, and controls the operation of the system. Do. The DC power generated by the fuel cell 44 and the DC power stored in the power storage unit 410 are converted into AC power through the power conversion unit 49, and the commercial power 4
AC power is supplied to the user through the power control unit 8 and the power system cooperation control unit.

As described above, the fuel cell system can simultaneously use the power generation and the exhaust heat of the environment conservation type, and is therefore expected to be an environment conservation type energy conversion system for the 21st century.

However, the problem with the effective use of the fuel cell system is that it requires additional equipment for a cooling supply unit including a cool storage tank and a heat storage tank, and has a limitation that the use of waste heat depends on the load pattern.

On the other hand, a heat pump system having higher energy use efficiency than simply using it as heat usually constitutes a closed refrigeration cycle, and a compressor, a radiator, and an expansion device supplied with electric power from commercial electric power. And an evaporator.

The heat pump system is equivalent to an air conditioner such as an air conditioner for home or building residence, and is equivalent to a car air conditioner for a wheel driven automobile, but may be a refrigeration unit or a refrigeration unit for commercial use. .

In the heat pump system, the radiator for the refrigerant cools the refrigerant with air or cooling water, and on the contrary, the air or cooling water is heated to perform a heating operation such as a heating operation or a hot water supply operation. The evaporator for the refrigerant evaporates the refrigerant with air or cooling water, and conversely cools the air or cooling water to perform a cooling operation such as a cooling operation.

When the fuel cell system spreads,
It is easily imagined that power will be supplied by selling power due to reverse power flow.

However, the heat pump system 2
The issues related to environmental conservation for the first century are the problem of alternative refrigerants that can replace the refrigerant for global warming gas and the improvement of energy use efficiency.

For the former, the use of natural refrigerants such as ammonia, hydrocarbons, carbon dioxide, water and air, which have almost no global warming effect, has been proposed. Ammonia, hydrocarbons, carbon dioxide, and water are used as refrigerants in a heat pump system constituting a closed refrigeration cycle. The air is usually used as a refrigerant of a heat pump system constituting an open refrigeration cycle without an evaporator, but may be used as a refrigerant of a heat pump system constituting a closed refrigeration cycle.

However, in a heat pump system using a hydrocarbon refrigerant which has attracted attention as a non-toxic and practical refrigerant such as ammonia, the hydrocarbon is flammable and an explosion-proof safety device is required. Also, in a heat pump system using a carbon dioxide refrigerant, which is attracting attention as a practical refrigerant without flammability and toxicity, it is necessary to configure a supercritical cycle because the critical temperature of carbon dioxide is as low as about 31 ° C. It is expected that the energy utilization efficiency is low due to its thermophysical properties.

[0026]

The fuel cell system which is expected to spread in the 21st century and the heat pump system having high energy use efficiency as described above are more environmentally friendly from the viewpoint of simultaneous use of power generation and waste heat. There is a problem that it is desired to be combined organically.

The present invention proposes a heat pump system utilizing the configuration characteristics of a fuel cell system in consideration of the above-mentioned problems of the heat pump system using a fuel cell. The purpose is to contribute to higher efficiency, power leveling and mutual effective use of both systems.

[0028]

According to a first aspect of the present invention, a fuel cell heat pump system includes a fuel cell, a cooling supply unit, and a cooling discharge unit.
A fuel cell system that performs power supply and waste heat utilization, a compressor to which power is supplied, a radiator, an expansion device, and an evaporator, comprising a heat pump system using a natural refrigerant, It is characterized in that at least one of the evaporator, the cooling supply unit and the radiator is thermally coupled.

A fuel cell heat pump system according to a second aspect of the present invention is characterized in that in the heating operation of the heat pump system, the cooling / discharging section and the evaporator are thermally coupled to prevent the evaporator from being cooled. And

According to a third aspect of the present invention, in the cooling operation of the heat pump system, the cooling supply unit and the radiator are thermally coupled to each other to promote lowering the temperature of the radiator. And

In a fuel cell heat pump system according to a fourth aspect of the present invention, a cooling means for cooling the radiator with water used in the fuel cell system is provided, and the refrigerant pressure of the heat pump system is reduced by cooling by the cooling means. It is characterized by.

According to a fifth aspect of the present invention, in the fuel cell heat pump system, the cooling / discharging section and the evaporator are thermally coupled, and the cooling operation of the heat pump system is used to promote the lowering of the temperature in the cooling supply section. It is characterized by.

In the fuel cell heat pump system according to claim 6 of the present invention, in promoting the temperature reduction in the cooling supply unit by using the cooling operation of the heat pump system,
It is characterized in that midnight commercial power is used for a compressor to which power of the heat pump system is supplied.

According to a seventh aspect of the present invention, there is provided a fuel cell heat pump system comprising:
It is characterized by using an explosion-proof safety device for a fuel cell system and a heat pump system using hydrocarbons.

[0035] The fuel cell heat pump system according to claim 8 of the present invention is characterized in that:
It is characterized by using carbon dioxide or air.

A fuel cell heat pump system according to a ninth aspect of the present invention is characterized in that carbon dioxide is used as a refrigerant of the heat pump system and is thermally coupled to the cooling supply unit and the radiator.

A fuel cell heat pump system according to a tenth aspect of the present invention uses air as a refrigerant of the heat pump system, and is thermally coupled to the cooling supply unit and the radiator, and the air is also supplied to the fuel cell system. It is characterized by that.

A fuel cell heat pump system according to claim 11 of the present invention is characterized in that the fuel cell is a polymer electrolyte fuel cell.

A fuel cell heat pump system according to a twelfth aspect of the present invention is characterized in that a product of the fuel cell system is used for replenishing a refrigerant used in the heat pump system.

[0040]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 is a configuration diagram of a fuel cell heat pump system according to a first embodiment of the present invention. A fuel cell system A is a residential polymer electrolyte type fuel cell. 1, only the same components as those in FIG. 4 are denoted by the same reference numerals, and description thereof is omitted.

Referring to FIG. 1, a heat pump system B for air conditioning will be described. This heat pump system B
Is a compressor 1 having a motor supplied with electric power, a four-way valve 2, a radiator 3 composed of an air heat exchanger, an expansion valve 4 which is an expansion device, and an air evaporator composed of an air heat exchanger. 5-
1. A closed refrigeration cycle composed of a water evaporator 5-2 composed of a water heat exchanger, and a heating means 6 which is a hot water circulating unit, and uses, for example, a hydrocarbon as a refrigerant.

In this heat pump system B, the water evaporator 5-2 is thermally connected to a heat storage tank 46 as a cooling / discharging section of the fuel cell system A by a heating means 6 as a hot water circulating section.

The regenerative storage tank 47 and the regenerative storage tank 46 are integrally constructed so that the cooling water in the regenerative storage tank 46 is circulated to the fuel cell 44 through the cooling water circulating section while cooling using air as a cooling heat source. .

Next, the operation of the fuel cell heat pump system during the heating operation will be described. In a normal heating operation, the heat pump system B is configured such that the hydrocarbon refrigerant is sucked and compressed by the compressor 1, and then the four-way valve 2
After that, the air is cooled by being exchanged with the air supplied to the radiator 3 and supplied, and the heated air is used for a heating operation.
The expansion valve 4 reduces the refrigerant pressure of the hydrocarbon refrigerant in the air evaporator 5-1 to a specific pressure or lower, and exchanges heat with the air supplied in the air evaporator 5-1 to evaporate the liquid refrigerant.

Here, during the operation of the hydrocarbon refrigerant at a low outside air temperature, the refrigerant pressure in the air evaporator 5-1 of the heat pump system B decreases, and the temperature of the air evaporator 5-1 decreases. Would. At this time, the heating means 6 guides high-temperature water in the heat storage tank 46, which is a cooling / discharging portion of the fuel cell system A, to the water evaporator 5-2, and the high-temperature water promotes refrigerant evaporation in the water evaporator 5-2. Thus, the refrigerant pressure in the water evaporator 5-2 of the heat pump system B is increased.

Therefore, since the pressure difference in the compressor 1 can be reduced, the safety of the heat pump system B can be maintained and high efficiency can be realized.

The regenerative storage tank 47 and the regenerative storage tank 46 are integrally formed so that the cooling water in the regenerative storage tank 46 is circulated to the fuel cell 44 through the cooling water circulating portion while cooling using air as a cooling heat source. Therefore, during the cooling operation of the heat pump system B, the four-way valve 2 is switched and the water heat exchanger 5-2 is used, so that the heat storage tank 46 (cum cool storage tank 47), which is a cooling and discharging unit, and the water evaporator 5- 2 is thermally coupled to the compressor 1 to which the electric power of the heat pump system B is supplied by using the commercial electric power 48 at midnight.
7 is promoted by the inexpensive commercial power 48, so that the efficiency of the fuel cell system A is improved.

Here, since the fuel cell system A uses hydrogen as fuel, explosion-proof safety devices such as leak detection and safety protection from the fuel cell system A to prevent explosive flammability of hydrogen due to leakage from a closed passage. However, in the heat pump system B using a hydrocarbon refrigerant, hydrocarbons are flammable, and an explosion-proof safety device is required. Therefore, the fuel cell system A and the heat pump system B share the explosion-proof safety device. You may do so.

(Second Embodiment) FIG. 2 is a configuration diagram of a fuel cell heat pump system according to a second embodiment of the present invention. A fuel cell system A is a polymer electrolyte type fuel cell for an automobile. In FIG. 2, only the same components as those in FIG. 4 are denoted by the same reference numerals, and description thereof is omitted.

Referring to FIG. 2, a heat pump system B for a car air conditioner will be described. The heat pump system B is a closed refrigeration cycle including a compressor 1, a four-way valve 2, a radiator 3, an expansion valve 4 as an expansion device, and an evaporator 5 having a motor supplied with electric power, and a chilled water circulation unit. It is constituted by a cooling means 7 and uses, for example, carbon dioxide as a refrigerant.

The cold storage tank 47 and the heat storage tank 46 are integrally formed while cooling the cooling water in the heat storage tank 46 using a cooling supply unit.
The fuel cell 44 is circulated through the cooling water circulating unit. When air is used for cooling as in a fuel cell system for an automobile, the main cooling supply unit corresponds to a cooling fan, and the integrated regenerative storage tank 47 and heat storage tank 46 correspond to a radiator of the automobile. .

In this heat pump system B,
The radiator 3 is thermally connected to a regenerator tank 47 which is a cooling supply unit of the fuel cell system A by a cooling means 7.

Further, in this heat pump system B, an internal heat exchanger (not shown) for indirectly exchanging heat with the refrigerant flowing out of the evaporator 5 is arranged in order to supercool the refrigerant flowing out of the radiator 3. May be.

Next, the operation of the fuel cell heat pump system during the cooling operation will be described. In the normal cooling operation, the heat pump system B exchanges heat with the air supplied to the radiator 3 through the four-way valve 2 through the four-way valve 2 after the carbon dioxide refrigerant is sucked and compressed by the compressor 1. And cooled. The expansion valve 4 reduces the refrigerant pressure of the carbon dioxide refrigerant in the evaporator 5 to a specific pressure or less,
The liquid refrigerant evaporates by exchanging heat with the air supplied in the above, and the air to be cooled is used for a cooling operation.

Here, the carbon dioxide refrigerant is used not only in the cooling operation at a high outside temperature but also in the heat pump system B.
Of the refrigerant in the radiator 3 exceeds the critical pressure. At this time, the cooling means 7 guides the cooling water from the cold storage tank 47, which is a cooling supply unit of the fuel cell system A, to the radiator 3, and cools the radiator 3 by evaporating on the surface of the radiator 3. The heat pump system B has the function of reducing the pressure of the refrigerant in the radiator 3.

Therefore, since the pressure difference in the compressor 1 can be reduced, the safety of the heat pump system B can be maintained and high efficiency can be realized.

As described above, by cooling the radiator 3 of the heat pump system B using water used in the fuel cell system A, safety and high efficiency can be ensured without external water supply. It is.

In each of the above-described embodiments, for example, when the cold heat from the evaporator 5 is used for cooling, when the refrigerant pressure is lower than the critical pressure or when the temperature of the compressor 1 is lower than the predetermined temperature. May cool the radiator 3 by the cooling means 7 only when the refrigerant pressure of the heat pump system B is equal to or higher than the critical pressure or when the temperature of the compressor 1 is equal to or higher than the predetermined temperature without performing the cooling by the cooling means 7. Good.

Further, as described in the operation of the fuel cell heat pump system shown in FIG. 1 during the heating operation, the fuel cell system A is used in the operation of the heat pump system B for the car air conditioner at the low outside air temperature.
The heat may be applied by using the exhaust heat of the radiator of the automobile, which is the cold storage tank 47 and heat storage tank 46 integrated with each other.

(Third Embodiment) FIG. 3 is a configuration diagram of a fuel cell heat pump system according to a third embodiment of the present invention. A fuel cell system A is a commercial polymer electrolyte type fuel cell. 3, only the same components as those in FIG. 4 are denoted by the same reference numerals, and description thereof is omitted.

Referring to FIG. 3, a heat pump system B for freezing and refrigeration will be described. The heat pump system B includes an open refrigeration cycle including a compressor 1 to which electric power is supplied, a radiator 3, and an expander 4-1 as an expansion device, and uses air as a refrigerant.

In this heat pump system B,
Although there is no physical evaporator, the temperature of the air itself, which passes through the expander 4-1 and is released to the atmospheric pressure of the freezing / refrigeration compartment, drops, so that the freezing / refrigeration compartment itself for performing the cooling operation is the evaporator 5 itself. Is configured. Here, the compressor 1 and the expander 4-1
Is equipped with a motor that is powered on a common axis,
The radiator 3 is thermally connected to a regenerator tank 47, which is a cooling supply unit of the fuel cell system A, by a cooling unit 7.

A supercooling heat exchanger 8 for further cooling the air refrigerant flowing out of the radiator 3 is configured to exchange heat with air at the outlet of the expander 4-1. The vessel 8 forms a part of the radiator 3.

Here, the radiator 3 is cooled with water used in the fuel cell system A, and the subcooling heat exchanger 8 is cooled with air at the outlet of the expander 4. Good.

Further, in the heat pump system B, the air that has passed through the radiator 3 is introduced into the fuel cell 44 of the fuel cell system A, and the unreacted air discharged from the fuel cell 44 is converted into a supercooled heat exchanger. It is configured to circulate through a freezer 8 through a freezing / refrigeration room.

In some applications, the fuel cell system A
, And then air may be introduced into the radiator 3.

In the freezing and refrigerating compartment, it is also possible to take in outside air, and by passing a humidifier (not shown) on the suction side of the compressor 1, the absorbed air is passed through the fuel cell 44.
May be introduced.

Next, the operation of the fuel cell heat pump system during the cooling operation will be described. In the heat pump system B, during the cooling operation, the air refrigerant is sucked and compressed by the compressor 1 from the freezing and refrigerating compartment acting as the evaporator 5, and then guided to the radiator 3 so that the fuel cell system A
, And is guided to the fuel cell 44 of the fuel cell system A, further guided to the supercooling heat exchanger 8, and cooled by exchanging heat with air at the outlet of the expander 4-1.

The expander 4-1 recovers power from the air refrigerant when depressurizing the air refrigerant and reduces the electric power required for the electric motor. Is reduced to atmospheric pressure to provide a cooling action.

Here, as for the air refrigerant, the refrigerant pressure in the radiator 3 of the heat pump system exceeds the critical pressure.
The cooling means 7 guides the cooling water in the cold storage tank 47, which is a cooling supply part of the fuel cell system A, to the radiator 3, and the cooling water cools the outlet air temperature of the radiator 3, and the cooling water in the radiator 3 of the heat pump system. It acts to lower the refrigerant pressure.

Therefore, since the pressure difference in the compressor 1 can be reduced, the safety of the heat pump system B can be maintained and high efficiency can be realized.

Further, in the fuel cell system A,
Air at an appropriate temperature that has passed through the radiator 3 of the heat pump system B is introduced into the fuel cell 44 of the fuel cell system A, and is not only used for power generation in the fuel cell 44 but also supplied under pressure. The power generation operation in the fuel cell system A is promoted.

In this embodiment, the heat pump system B for refrigerating and refrigerating is constituted as an open type refrigerating cycle using an air refrigerant. However, it is needless to say that the heat pump system B may be used for cooling work for automobiles such as buses. That is, a heat pump system having a closed refrigeration cycle including an evaporator using an air refrigerant as a component may be configured to perform a cooling operation in the evaporator.

The fuel cell heat pump system according to the present invention is not limited to the thermal coupling of at least one of the cooling / discharging section of the fuel cell system and the evaporator of the heat pump system, and the cooling supply section of the fuel cell system and / or the radiator of the heat pump system. In addition, natural refrigerants such as hydrocarbons, carbon dioxide, water, and air are used as refrigerants for the heat pump system, and these are also products of the fuel cell system. You may make it supply from a system side.

[0076]

As described above, according to the present invention, a fuel cell system including a fuel cell, a cooling supply unit, and a cooling discharge unit for supplying electric power and utilizing waste heat is provided. A heat pump system including a compressor, a radiator, an expansion device, and an evaporator and using a natural refrigerant, wherein at least one of the cooling discharge unit and the evaporator, the cooling supply unit and the radiator is thermally connected. The fuel cell heat pump system is characterized by the combination of the fuel cell system expected to spread in the 21st century and the heat pump system with high energy use efficiency. Therefore, it is more organically combined using the configuration characteristics of the fuel cell system,
This contributes to higher efficiency, power leveling and mutual effective use of both the fuel cell system and the heat pump system.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a fuel cell heat pump system according to one embodiment 1 of the present invention.

FIG. 2 is a configuration diagram of a fuel cell heat pump system according to Embodiment 2 of the present invention.

FIG. 3 is a configuration diagram of a fuel cell heat pump system according to Embodiment 3 of the present invention.

FIG. 4 is a general configuration diagram of a fuel cell system.

[Explanation of symbols]

 Reference Signs List A fuel cell system B heat pump system 1 compressor 2 four-way valve 3 radiator 4 expansion device 5 evaporator 6 heating means 7 cooling means 8 supercooling heat exchanger 41 blower 42 hydrogen generator 43 humidifier 44 fuel cell 45 condenser 46 Heat storage tank (cooling / discharging unit) 47 Cold storage tank (cooling / supplying unit) 48 Commercial power 49 Power conversion unit 410 Power storage unit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F25B 13/00 F25B 13/00 A 351 351 H01M 8/04 H01M 8/04 G N 8/06 8/06 W 8/10 8/10 (72) Inventor Shozo Funakura 1006 Kazuma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. F term (reference) 3L054 BG10 BH06 3L092 MA04 NA11 5H026 AA06 5H027 AA06 BA05 CC03 CC06 CC15 DD00 DD06 MM27

Claims (12)

[Claims] At least a fuel cell, a cooling supply unit,
A fuel cell system comprising a cooling / discharging unit and performing power supply and waste heat utilization, and at least a power-supplied compressor,
A heat pump system that includes a radiator, an expansion device, and an evaporator and uses a natural refrigerant, and is thermally coupled to at least one of the cooling discharge unit and the evaporator, and the cooling supply unit and the radiator. A fuel cell heat pump system characterized by the following. 2. The fuel cell heat pump system according to claim 1, wherein in the heating operation of the heat pump system, the cooling / discharging portion and the evaporator are thermally coupled to prevent the evaporator from being cooled. . 3. The fuel cell heat pump system according to claim 1, wherein in the cooling operation of the heat pump system, the cooling supply unit and the radiator are thermally coupled to promote lowering the temperature of the radiator. . 4. The fuel cell according to claim 3, wherein cooling means is provided for cooling the radiator with water used in a fuel cell system, and the cooling by the cooling means lowers the refrigerant pressure of the heat pump system. Heat pump system. 5. The fuel cell according to claim 1, wherein the cooling / discharging section and the evaporator are thermally connected to each other, and a cooling operation of a heat pump system is used to promote lowering of the temperature of the cooling supply section. Heat pump system. 6. A midnight commercial electric power is used for a compressor to which electric power of the heat pump system is supplied, in promoting a lowering of the temperature of the cooling supply unit by using a cooling operation of the heat pump system. A fuel cell heat pump system as described. 7. The fuel cell heat pump system according to claim 1, wherein a hydrocarbon is used as a refrigerant of the heat pump system, and an explosion-proof safety device is used for both the fuel cell system and the heat pump system. 8. The fuel cell heat pump system according to claim 1, wherein carbon dioxide or air is used as a refrigerant of the heat pump system. 9. The fuel cell heat pump system according to claim 8, wherein carbon dioxide is used as a refrigerant of the heat pump system, and is thermally coupled to the cooling supply unit and the radiator. 10. The fuel cell system according to claim 8, wherein air is used as a refrigerant of the heat pump system, and the air is thermally coupled to the cooling supply unit and the radiator. Fuel cell heat pump system. 11. The fuel cell heat pump system according to claim 1, wherein the fuel cell is a polymer electrolyte fuel cell. 12. The fuel cell heat pump system according to claim 1, wherein a product of the fuel cell system is used for replenishing the refrigerant used in the heat pump system.