| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell generator and its operation method high in economical efficiency, by suppressing the electricity consumption on startup. <P>SOLUTION: In the operation method of a fuel cell generator which supplies waste heat from fuel cells to a hot water tank 10, a part of thermal energy stored in the hot water tank 10 is used as at least the part of supply heat necessary for fuel cell startup. For implementing the method, when the detected value by a temperature detector of hot water tank circulating water 8 is higher than the detected value by a temperature detector of cell cooling water 6 at the initiating time of the fuel cell 1, a three way adjusting valve 7 is controlled in order to flow cell cooling water to a cell cooling water cooler 2. When lower, the three way adjusting valve 7 is controlled in order to flow the cell cooling water to a cell cooling water bypass line 60a. Furthermore, the fuel cell generator is provided with an operation/control device 70 which operates a cell cooling water warming heater 4 in order to add thermal energy when the lower case and lack of the supply heat necessary for fuel cell startup are happened. <P>COPYRIGHT: (C)2004,JPO |
