| 摘要 |
<p>As water duct systems for supplying hot water (water retained in a hot-water storage tank (23)) to a facility (F), this fuel cell system (1) has: a water duct system (FS1) that reaches the facility (F) from a water-retaining region (23H) of the hot-water storage tank (23) via a backup boiler (24); and a water duct system (FS2) that reaches the facility (F) from a water-retaining region (23L) of the hot-water storage tank (23) via the backup boiler (24). A switching unit (25), for example, switches from water duct system (FS1) to water duct system (FS2) when the temperature of the water retained at water-retaining region (23H) is lower than the temperature requested by the facility (F).</p> |
