| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell power generation system capable of making the system more simple and more compact. <P>SOLUTION: A fuel supply line 4 is connected to a fuel electrode 1a of a fuel cell tack 1, and hydrogen is supplied from a hydrogen supply source 2 through the fuel supply line 4. Exhaust gas from the fuel electrode 1a is circulated to an oxidant electrode 1b through a hydrogen circulation line 5. An oxidant supply line 6 and an oxidant exhaust line 7 are connected to the oxidant electrode 1b, and air form an air blower 3 is supplied through the oxidant supply line 6. A fuel supply valve 10a is installed in the fuel supply line 4, an air supply valve 10d is installed in the oxidant supply line 6, and an air exhaust valve 10d is installed in the oxidant exhaust line 7, and opening and closing of the hydrogen supply valve, the air supply valve, and the air exhaust valve are controlled so that hydrogen concentration in an oxidant electrode inlet becomes less than 4% in rated operation. <P>COPYRIGHT: (C)2008,JPO&INPIT |
