| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system capable of warming up a fuel cell by exhaust heat in a reformer warming-up upon starting operation of the system. <P>SOLUTION: In the fuel cell system, a hot water storage circulation circuit includes a flow channel 75 equipped with a first heat exchanger 74 and a flow channel 72 equipped with an exhaust heat recovery means 30 raising the temperature of stored hot water by recovering either exhaust heat of offgas exhausted from a fuel cell 10 or exhaust heat generated at a reformer 20, in parallel. A flow amount adjusting means adjusts flow volumes of the flow channel 75 equipped with the first heat exchanger 74 and the flow channel 72 equipped with the exhaust heat recovery means 30, respectively, and also, fluid of the flow channel 75 equipped with the first heat exchanger 74 can pass through both directions. Moreover, an open-close valve 77 is provided between a branch point of the flow channel 75 equipped with the first heat exchanger 74 and the flow channel 72 equipped with the heat recovery means 30, and an entrance of a hot water storage tank 71. <P>COPYRIGHT: (C)2008,JPO&INPIT |
