| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel cell system capable of expelling air bubbles from a stored hot water circulation line even in a case where a water pressure of stored hot water in the stored hot water circulation line is reduced.SOLUTION: A fuel cell system comprises: a fuel battery module 20 that generates power by an electrochemical reaction and exhausts flue gas generated by the power generation; a stored hot water circulation pump 32a provided in a stored hot water circulation line 32 and driven by an electric motor 32a1; a heat exchanger 33 in which heat exchange is performed between the flue gas and the stored hot water; an air bubble detector S102 for detecting that air bubbles are generated in the stored hot water circulation line; and a control device 60 that stops operation of the stored hot water circulation pump 32a for a predetermined period of time by an air bubble detection signal from the air bubble detector S102, and then, returns the operation. |
