| 摘要 |
PURPOSE:To restrain deterioration of each cell as much as possible so as to prolong the life of a fuel cell main body by providing fuel-gas and oxidizer-gas lines which can switch the direction of fuel gas and that of oxidizer gas in each cell from normal to reverse. CONSTITUTION:A fuel gas line 11 comprises a cell inlet pipe 13, a fuel gas switching valve 14 and a cell outlet pipe 15, and an oxidizer gas line 12 comprises a cell inlet pipe 16, an oxidizer gas switching valve 17 and a cell outlet pipe 18. When the body of the valve 14 passes through the pipe 13, the direction in which it moves is regarded as normal, whereas when the body passes through both of the pipes 13, 15 the direction in which it moves is regarded as reverse. During plant operation the valves 14 and 17 are controlled and switched from a normal to a reverse position or vice versa with the lapse of time. Therefore, the deteriorated portion of each cell is not specified and the life of a fuel cell main body can be prolonged. |
