Patent ID: 8092953

Claim:
A solid oxide fuel cell system comprising: a fuel cell stack for performing power generation by electrochemical reactions of a fuel gas and an oxygen-containing gas; a combustor for burning an exhaust gas discharged from the fuel cell stack during power generation to produce a heat medium; a heat exchanger for heating the oxygen-containing gas by the heat medium to generate a heated oxygen-containing gas, and for supplying the heated oxygen-containing gas to the fuel cell stack; heat utilization equipment for utilizing the heat medium after heat exchange, the combustor being provided downstream of the fuel cell stack, the heat exchanger being provided downstream of the combustor, the heat utilization equipment being provided downstream of the heat exchanger; a bypass channel for supplying at least part of the heat medium produced in the combustor to the heat utilization equipment, bypassing the heat exchanger; and a control device for adjusting supply of heat energy supplied to the fuel cell stack through the oxygen-containing gas heated by the heat exchanger, and adjusting supply of heat energy of the heat medium passing through the bypass channel to the heat utilization equipment.