| 摘要 |
PURPOSE: To avoid the leak of lubricating oil at the starting of operation to prevent drop in performance and life of a fuel cell by supplying air from a pressure control line on the outlet side of an air blower to the inlet side of an air compressor, and always keeping the outlet side of the air compressor in positive pressure. CONSTITUTION: An anode gas 2 containing water, generated in a reformer 3 is supplied to a fuel cell 5. Air from an air compressor C of a turbine compressor 21, which operates with a cathode exhaust gas 9, and an air blower 29 is supplied to a starting hot air generating furnace 50 and the fuel cell as a cathode gas 4. In a fuel cell power generating system which conducts power generation with the fuel cell, a pressure detector 64 is arranged on the outlet side of the air compressor C, and a pressure control valve 70 arranged in a pressure control line 69 on the outlet side of the air blower C and the air blower 29 is controlled based on the detected value in the pressure detector 64. At the staring of operation at which a switching valve 66 is closed, air is supplied to an inlet side line 65 of the air compressor C so that the pressure detector 64 does not become negative pressure. |
