| 摘要 |
PURPOSE:To reduce the cost of a temperature raising system and to save the temperature raising energy consumed in the temperature raising operation, by providing a heater in a circulation system of a cathode to circulate an inert gas while raising its temperature, and heating a fuel cell indirectly by the heated inert gas. CONSTITUTION:When a fuel cell is driven and operated, nitrogen gas N is fed to a cathode circulation system 5 instead of the gas in the cathode circulation system 5, and then, the nitrogen gas N is circulated while heating the nitrogen gas N up to a specific temperature by a heater 18 provided in the circulation system 5 so as to heat a fuel cell 1 indirectly. As a result, a good heat exchange efficiency can be obtained, and even though the fuel cell 1 is a large size, for example, an adequate capacity is obtained, and a commercial heater 18 can be used for the heating. Consequently, the cost of the temperature raising system can be reduced, and the temperature raising energy such as the power or the fuel can be saved. Furthermore, generation of a thermal distortion in the fuel cell 1 can be suppressed, the fuel cell 1 can be heated evenly, and the capacity of the fuel cell can be maintained. |
