| 摘要 |
[PROBLEMS] A fuel cell system capable of a constant supply to a hot water supply load. [MEANS OF SOLVING PROBLEMS] A fuel cell system comprising a solid electrolytic fuel cell (31), a heat exchanger (40) for exchanging heat between exhaust gas from the solid electrolytic fuel cell (31) and water, a hot water storage tank (42) storing water, circulating pipelines (43a, 43b) for circulating water between the storage tank (42) and the heat exchanger (40), and a circulating pump (41) provided on the circulating pipelines (43a, 43b), characterized in that a control device (39) for controlling a fuel utilization efficiency during power generation by the solid electrolytic fuel cell (31) according to stored hot water amount to be used. |
