OPERATION METHOD FOR FUEL BATTERY SYSTEM AND FUEL COMPOSITION ESTIMATING METHOD IN FUEL BATTERY SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an operation method for a fuel battery system that can enhance durability.SOLUTION: An operation method is applied to a fuel battery system 100 having a combustor 20 for reacting cathode off-gas discharged from a cathode 16 and anode off-gas discharged from an anode 14 to generate combustion gas, a temperature detector 22 for detecting the temperature of the combustion gas, and a storage unit 24 for storing a preset target temperature file. The target temperature profile contains the time variation of a target temperature of the combustion gas during the operation of the fuel battery system 100, and during the operation, the flow rate of fuel supplied from a fuel supplier 10 to a reformer 12 is controlled so that the temperature detected by a temperature detector is equal to a target temperature specified on the basis of the target temperature profile.SELECTED DRAWING: Figure 1