| 摘要 |
A fuel-cell system is advantageous for repressing water from flowing backward from a reservoir to a condenser, flowing backward which results from the inside of the condenser being turned into negative pressure. The fuel-cell system has a fuel cell for generating electric power by reactant gas, a condenser for generating condensed water by condensing water content included in the reactant gas to be supplied to the fuel cell or in off gas of the reactant gas, and a reservoir for reserving the condensed water collected at the condenser. A drain valve is disposed between the condenser and the reservoir. The drain valve is switchable between a closed state in which communication between the condenser and the reservoir is shut off and an opened state in which the condenser is communicated with the reservoir to discharge the water in the condenser to the reservoir. A controller carries out inner-pressure increment and drain controls for opening the drain valve after increasing inner pressure in the condenser. |
