FUEL CELL SYSTEM, FUEL CELL SYSTEM CONTROL METHOD AND ITS PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a fuel cell system allowing hot water at a set temperature to be supplied by operating a burner of an auxiliary heat source machine at the minimum burning capacity even when the temperature of hot water in a hot-water storage tank is set lower than the set temperature in supplying the hot water; to provide a fuel cell system control method; and to provide its program.

SOLUTION: Since the auxiliary heat source machine 113 is operated to supply hot water at the set temperature only in supplying the hot water, wasteful heat radiation to the atmosphere is prevented as compared with the case where hot water is always kept in the hot-water storage tank 110 in a full storage state. Since the burner is operated at the minimum burning capacity even in operating the auxiliary heat source machine 113, consumption of a raw fuel such as a city gas can be reduced.

COPYRIGHT: (C)2008,JPO&INPIT