| 摘要 |
PROBLEM TO BE SOLVED: To prevent dew condensation at a flow channel, flow-channel choke-up or the like even in partial load operation by suitably controlling moisture volume to be added to reactive gas. SOLUTION: Reactive air to be supplied to a fuel stack part 3 is shunted to a moistening air supply tube 7 equipped with a flow control valve 71 and a non-moistening air supply tube 8 equipped with a flow control valve 81, and moisture content in the reactive air is controlled by controlling opening angles of flow control valves 71, 81 with a controller 9, based on load current. |
