| 摘要 |
PROBLEM TO BE SOLVED: To provide a simple and small solid polymer type fuel cell system in which cell stack temperature is surely raised to an adequate temperature, and freezing of water in the solid polymer type fuel cell stack, in piping, in circulation pump, or the like is prevented. SOLUTION: The solid polymer type fuel cell system comprises a gas flow path for supplying fuel gas and oxidizing gas to a cell stack in which a plurality of cell units are stacked, and a cooling path that communicates water or a hydrophobic oil having a boiling point of 100 deg.C or lrigher, wherein switching means that switches water or the hydrophobic oil as a liquid supplied to the cooling path and a heating means that heats water or the hydrophobic oil to an adequate temperature are provided. At stopping, the water in the cooling path is switched to the hydrophobic oil. At starting, the hydrophobic oil whose temperature rises is supplied to the cooling path or the like to rapidly heat the fuel cell. |
