| 摘要 |
PURPOSE:To improve the heat recovery efficiency of a system by providing a switching means of an exhaust gas passage and an air passage, and feeding the high-temperature exhaust gas of a fuel cell or the discharged warm air of an air conditioner in response to cooling or heating. CONSTITUTION:At the time of heating, the high-temperature exhaust gas from a fuel cell 1 and the outside air are fed to an outdoor unit 4 via an exhaust gas passage switching means 7 for heat exchange, and warm air is fed to an indoor unit 3 through a pipe 5. The heat of the exhaust gas of the fuel cell 1 is efficiently recovered. At the time of cooling, a refrigerant in the pipe 5 is heat-exchanged with the outdoor unit 4, and cool air is discharged from the indoor unit 3. An air passage switching means 8 is switched to feed the hot air discharged from the outdoor unit 4 to a fuel cell stack 9, and the reaction air is heated to contribute to cell reaction. The quantity of the high- temperature exhaust gas recycled from a damper 11 is reduced, more high- temperature exhaust gas can be fed to a heat exchanger 12 that much, and the high-temperature heat can be efficiently recovered. |
