| abstract |
Provided is a solid oxide fuel cell (SOFC) capable of accurately and quickly making a misfire determination in accordance with the temperature state of a fuel cell assembly and a fuel cell module in a fuel cell structure that is prone to misfire. The present invention relates to a fuel cell assembly 12, a reformer 20, a fuel gas supply means 38, a reforming air supply means 44, a power generation air supply means 45, an ignition means 83, Temperature detection means 140 and 152 for detecting the temperature resulting from combustion of combustion gas, and at the time of start-up, a combustion operation is performed in which the fuel gas is ignited by the ignition means and the fuel gas is combusted by power generation air, and POX operation, ATR operation, SR A controller 110 that sequentially operates, and this controller determines misfire when the temperature resulting from combustion of combustion gas falls below a predetermined temperature drop threshold value within a predetermined time and The predetermined temperature drop amount threshold value is set so as to become larger as the temperature resulting from the combustion of the combustion gas is lower. [Selection] Figure 1 |