| 摘要 |
PROBLEM TO BE SOLVED: To provide a solid oxide fuel cell capable of being operated in a thermally stable state while reducing harmful gases included in emissions.SOLUTION: A solid oxide fuel cell (1) comprises: a fuel cell module (2); fuel supply means (38); oxidant gas supply means (45) for power generation; a combustion unit (18) for combusting remaining residual fuel for power generation; a heat storage material (7); demand power detection means (126); heat storage volume estimation means (110a); control means (110) for executing proper temperature control which converges a temperature in a fuel cell module to a proper temperature range by increasing a fuel utilization when the heat storage volume is large; and exhaust gas state determination means (110b). The control means executes exhaust gas optimization control which corrects a fuel supply amount and/or an oxidant gas supply amount for power generation set by the proper temperature control so that the exhaust gas enters a proper state. The control means executes the proper temperature control in preference to the exhaust gas optimization control. |
