A fuel cell cogeneration system, method of operating the fuel cell cogeneration system, and method of operating the fuel cell cogeneration system

摘要

A fuel cell cogeneration system (10) includes a fuel cell module (12), a heat exchanger (14), a hot water tank (16), a circulation water channel (18), and an oxygen-containing gas supply channel (20). A circulation water heater (40) for heating water is provided at the circulation water passage (18). A part (20a) of the oxygen-containing gas supply passage (20) is provided in the circulation water heater (40), thereby allowing air flowing through the oxygen-containing gas supply passage (20) to be heated by heat intake from the circulation water heater (40) becomes.