| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system in which non-combustible gas 5-10% is mixed into an exhausted hydrogen gas exhausted from a fuel cell and a concentration of the exhausted hydrogen gas is set to be higher than an explosion upper limit for performing a safe operation. <P>SOLUTION: The fuel cell system is provided with a non-combustible gas mixing unit (1) which is arranged in an exhausted hydrogen gas line (10) and mixes the non-combustible gas, a catalyst reaction unit (7) and an exhausted gas heat exchanging unit (8) provided in the exhausted hydrogen gas line (10) and an oxygen introduction control means (30), and a concentration of the exhausted hydrogen gas is set to be higher than an explosion limit for performing a safe operation. <P>COPYRIGHT: (C)2009,JPO&INPIT |
