| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system in which the humidification performance of a humidifier can be exhibited fully, irrespective of the operating state of the fuel cell. <P>SOLUTION: This fuel cell system (10) is provided with the humidifier (40), in which an oxygen gas supplied to the fuel cell (20) and an oxygen off-gas exhausted from the fuel cell (20) are made to be circulated and moisture contained in the oxygen off-gas is exchanged between the oxygen off-gas and the oxygen gas and the oxygen gas is humidified, and with a pressure control valve (46) which regulates the pressure of the oxygen off-gas exit side of the humidifier (40) and controls the moisture exchange rate of the humidifier (40). By controlling the pressure of the oxygen off-gas exit side of the humidifier, the pressure of the humidifier (40) becomes controllable, and the moisture exchange rate of the humidifier (40) can be controlled, regardless of the operating state of the fuel cell (20). <P>COPYRIGHT: (C)2006,JPO&NCIPI |
