| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system preventing abnormal temperature rise of a fuel cell caused by pressure loss of exhaust heat recovery piping, and stably supplying high temperature water. <P>SOLUTION: This fuel cell system is equipped with cooling piping 8 circulating cooling water for recovering heat generated in the fuel cell 1; a hot water storage tank 13 storing hot water for supplying to an outside hot water supply load; a heat exchanger 10 for transferring heat recovered with the cooling water to water inside the hot water storage tank 13; exhaust heat recovering piping 12 for circulating water in the hot water storage tank 13 to the heat exchanger 10; a circulation pump 11 installed in the exhaust heat recovering piping 12 and returning water in the hot water storage tank 13 to the hot water storage tank 13 through the heat exchanger 10; a cell temperature detector 14 detecting the temperature of the fuel cell 1; and a control device 15 for compulsorily controlling the output of the circulation pump 11 to the specified value or more when the temperature detected with the cell temperature detector 14 reaches the specified value or more. <P>COPYRIGHT: (C)2004,JPO |
