| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel cell system in which improvement in efficiency of fuel consumption and improvement in stability of fuel cell operation are made by reducing the supply quantity of humidifying water and increasing the circulation ratio of an ejector (circulation quantity/new supply quantity). SOLUTION: A high pressure fuel gas which is supplied from a hydrogen container 1 is supplied to the ejector 3 as a drive flow after regulated in pressure and flow rate by a pressure regulating valve 2. The humidifier 4 humidifies the fuel gas supplied to the fuel cell body 5. The exhaust gas discharged from the fuel pole outlet of the fuel cell body 5 is dehumidified by a dehumidifier 6 provided at the circulating passage 7 and re-circulated to the suction port of the ejector 3. Since the exhaust gas is dehumidified, the circulation ratio is improved. The water collected at the dehumidifier 6 is supplied to the humidifier 4 through a collection water passage 10. |
