FUEL CELL SYSTEM AND METHOD OF OPERATING THE FUEL CELL SYSTEM

摘要

A fuel cell system (10) includes a first heating mechanism (77a) and a second heating mechanism (77b). The first heating mechanism (77a) directly heats a reformer (22) using some of an exhaust gas discharged from a fuel cell stack (12). The second heating mechanism (77b) supplies the remaining exhaust gas to a heat exchanger (18) and indirectly heats the reformer (22) by the heat generated in the heat exchanger (18). The reformer (22) performs preliminary reforming to produce a reformed gas. The reformed gas is supplied to an anode (34). At the anode (34), water produced in the power generation is present as water vapor. The reformed gas is further reformed by steam reforming to produce a hydrogen gas.