| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system capable of surely preventing a hindrance by the freeze of water while preventing loss of energy, complication of operation and lack of mobility, and of maintaining and securing safe power generation operation. <P>SOLUTION: This fuel cell system comprises: a fuel cell 1; a cooling water tank 7 and a cooling water circulation passage 32; a hot water tank 10 and a hot water circulation passage 31; a heat exchanger 9; drain valves 25-27; temperature sensors 17, 18, 20; and a controller 41, wherein the controller selects circulation of at least either cooling water in the cooling water circulation passage or hot water in the hot water circulation passage, or alternatively selects water discharge by opening the drain valves, based on the water temperatures detected by the temperature sensors during suspension of the power generation of the fuel cell. <P>COPYRIGHT: (C)2009,JPO&INPIT |
