| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel cell system capable of easily detecting the concentration of CO in a refining gas when a sudden load variation occurs. SOLUTION: This fuel cell system is equipped with a reformer 1 for reforming a material fuel to make a hydrogen-enriched reforming gas and a fuel cell body 2 having a plurality of cells 3 each having, as a pair, a fuel electrode into which hydrogen in the reforming gas is introduced and an oxygen electrode into which oxygen is introduced. At least one cell 3a of the cells 3 is equipped with a voltage detecting device 4 for detecting the voltage of the cell 3a. Or else, a cell equipped with a voltage detecting device for detecting the cell voltage is installed separately from the fuel cell body. |
