摘要 |
PROBLEM TO BE SOLVED: To realize a fuel cell system having a large-capacity compressor capable of being operated by the small capacity of an electric motor. SOLUTION: This fuel cell system is provided with a both tooth-type scroll fluid machine 60 in which a compressor 59 and an expander 64 are integrated with each other. This scroll fluid machine is rotationally driven by an electric motor 69. Air compressed by the compressor reacts with hydrogen gas in a fuel battery main body 50, its moisture is removed by a water collector 63, the air is guided to the expander, and a part of power of the compressor is recovered. The water collected by the water collector is guided to the compressor and used for cooling or lubrication. |