| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system capable of improving operation efficiency by increasing an amount for recovering energy from off-gas. <P>SOLUTION: The fuel cell system comprises: a compressor 40 for feeding oxidant gas to an oxidant supply path 11; and an expander 42 driven by off-gas exhausted from an oxidant exhaust path 12 and transmitting power to the compressor 40. The system comprises a heat exchanger 30 connected to a middle of the oxidant supply path 11 and the oxidant exhaust path 12, and heating the off-gas circulated in the oxidant exhaust path 12 by heat from the oxidant gas circulated in the oxidant supply path 11; and a humidifier 20 connected to the middle of the oxidant supply path 11 and the oxidant exhaust path 12 between the heat exchanger 30 and the fuel cell 10, and humidifying the oxidant gas circulated in the oxidant supply path 11 by moisture in the off-gas circulated in the oxidant exhaust path 12. <P>COPYRIGHT: (C)2013,JPO&INPIT |
