| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel battery system which can cope with hot water reduction of in a hot water storage tank to promptly increase hot water in the hot water storage tank.SOLUTION: A fuel battery system comprises: a first heat exchanger 9 for exchanging heat between an oxygen-containing gas and an exhaust gas; a hot water storage tank 18; a hot water storage amount sensor 20 for measuring a hot water storage amount in the hot water storage tank 18; a second heat exchanger 13 for exchanging heat between the exhaust gas exhausted from the first heat exchanger 9 and hot water in the hot water storage tank 18; an oxygen-containing gas bypass device 25 for supplying the oxygen-containing gas to a fuel battery cell 1 in a housing 10 without passing through the first heat exchanger 9; and a control device 14 for controlling the oxygen-containing gas bypass device 25 so as to supply a part or all of an oxygen-containing gas amount having passed through the first heat exchanger 9 via the oxygen-containing gas bypass device 25 to the fuel battery cell 1 in the case where the hot storage water amount in the hot water storage tank 18 measured by the hot water storage sensor 20 is reduced to a value of a predetermined value or less. |
