SOLID OXIDE FUEL CELL AND PREHEATING METHOD AT THE TIME OF START UP

摘要

PROBLEM TO BE SOLVED: To provide a preferable preheating method and a preheating structure at the time of operation start of a solid oxide fuel cell in which preheating can be made in a short time while preventing breakage of the power generation cell.

SOLUTION: In the solid oxide fuel cell having a sealless structure, a fuel gas and an oxidizer gas are supplied to a power generation cell 5 at the time of preheating at operation start, and the fuel gas discharged outside from the outer peripheral part of the fuel cell stack 1 is burnt by a combustion means 20 provided at the surrounding of the stack, and by utilizing the combustion heat, the power generation cell 5 is raised in temperature up to the operation temperature.

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