| 摘要 |
PROBLEM TO BE SOLVED: To provide a stably operating fuel cell system. SOLUTION: When a supply volume of fuel (figure 3C) at the time t0 is increased at once according to the requested value of electric power generation, the temperature of an evaporator 5 becomes lower than the lower limit value as shown by an arrow (figure 3D), therefore, the heat volume supplied to the evaporator 5 is increased by raising the temperature of a combustion device 10 (figure 3B), and supply volume of the fuel is gradually increased corresponding to the above. There is a method of sharply increasing the supply volume of the fuel at the time t0 so as to make the temperature of the evaporator 5 coincide with the lower limit value (PR6) and gradually increasing the temperature afterwards (PR3), and a method of gradually starting the increase of supply volume after supplied heat volume starts increase (PR4) so as not to make the temperature of the evaporator 5 come near to the lower limit (PR5). The former can make the supply volume of the fuel quickly get to the target volume, and the latter is excellent in the stability of the evaporator 5. The temperature of the evaporator 5 can be kept higher than the lower limit value by either method, and the evaporation property of the evaporator 5 is stabilized. |
