| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system that can efficiently vaporize water while suppressing a decline in temperature of a reformer 2. <P>SOLUTION: The fuel cell system 1 uses a vaporizer 4 and a vaporizer 5 to supply water vapor to the reformer 2. The vaporizer 4 vaporizes water by using heat generated by a heater 4a, and hence water vapor can be supplied to the reformer 2 by using the vaporizer 4 when the fuel cell system 1 is operated for start-up. Meanwhile, the vaporizer 5 vaporizes water by using heat of exhaust gas exhausted from the reformer 2 and/or a cell stack 3, and hence water vapor can be supplied to the reformer 2 by using the vaporizer 5 during steady operation of the fuel cell system 1. Consequently, even if the heater 4a is stopped during steady operation of the fuel cell system 1, water can be efficiently vaporized while suppressing a decline in temperature of the reformer 2. <P>COPYRIGHT: (C)2011,JPO&INPIT |
