COMBINED POWER GENERATION SYSTEM, POWER GENERATION PLANT, HEAT INSULATION METHOD OF SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a high-efficiency combined power generation system or the like with excellent maintainability of the system.

SOLUTION: An SOFC (fuel cell) module M1 and an Na secondary battery (secondary battery) module M2 are composed independently; and mutual heat exchange between the SOFC module M1 and the Na secondary battery module M2 are carried out by circulating a heat medium. Thereby, high-efficiency power generation can be executed without impairing the maintainability of the system. A heating means 60 for heating the secondary battery 2 is further installed in addition to the battery module M2. The secondary battery 2 can be heated to a predetermined temperature, for instance, around 300-400°C by the heating means 60 even when the SOFC 1 constituting the SOFC module M1 is stopped.

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