摘要 |
A fuel cell system including a fuel cell having an air feeding tube, an air discharging tube and a fuel feeding tube, the air discharged from the fuel cell through the air discharging tube containing water. The system also includes a compressor, a water separation tank, and a water supply passage for supplying water collected in the water separation tank to the compressor. When the system is to be stopped, the water supply passage is first blocked while the compressor is operating. The humidity or the temperature of the process air is then detected, and the compressor is stopped when the detected humidity is lower than a predetermined value, or when the detected temperature is higher than a predetermined value.
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