| 摘要 |
PROBLEM TO BE SOLVED: To securely detect abnormality of a recycle fuel pipe for returning part of fuel reformed by a reforming unit to a desulfurizer, suppressing a failure of a fuel cell and deterioration in the reforming unit caused by a sulfur component.SOLUTION: A fuel cell system includes: a temperature sensor 39a that is provided on a recycle gas pipe 39 and directly detects temperature of a recycle gas; a controller 15 for detecting passing and/or a flow rate of the recycle gas passing through the recycle gas pipe 39, on the basis of the recycle gas's temperature detected by the temperature sensor 39a (detection unit: step S108). |
