| 摘要 |
PROBLEM TO BE SOLVED: To secure, by targeting a charge/discharge system using solid-state polymer-type cells equipped with a water electrolyzer function and a fuel cell function, prescribed performances since the start-up stage of a fuel cell operation by effectively using high-temperature, high-humidity oxygen generated at the time of a water electrolyzing operation.SOLUTION: Raw water is fed into the oxygen side of the reversible cell 10 of a cell stack 2 from a vapor-liquid separation tank 43 at the time of a water electrolyzing operation. High-temperature, high-humidity oxygen generated at the time of the water electrolyzing operation is vapor/liquid-separated within the tank 43 and then prompted to absorb humidity within a humidity exchanger 61 and to absorb heat within a heat exchanger 63. Air transmitted to the reversible cell 10 by a fan 64 at the time of a fuel cell operation is heated by the heat exchanger 63 and, following the humidity absorption thereby within the humidity exchanger 61, fed into the reversible cell 10. |
