Patent ID: 8173317

Claim:
A fuel cells power generation system in which a bundle is formed by electrically connecting a plurality of cylindrical solid oxide fuel cells, a power generation module is formed by collecting a plurality of said bundles and electrically connecting said bundles by a collecting plate, and an outer space of cylindrical solid oxide fuel cells forms a gas flow path of fuel or oxidizer and an inner space of said cylindrical solid oxide fuel cells forms a gas flow path of oxidizer or fuel, respectively, wherein a cross sectional area of the gas flow path formed in said outer space of said cylindrical solid oxide fuel cells in an inner portion of said power generation module is larger in comparison with an outer portion of said power generation module, wherein said power generation module is formed by arranging a plurality of lines in parallel, each of which lines is formed by disposing said bundles linearly, a plurality of electrical insulating plates comparting said lines from each other are provided to provide outer lines and at least one middle line, and each of said electrical insulating plates is provided with a flow path cross sectional area adjusting member which fills in a part of said outer space of said cylindrical solid oxide fuel cells so as to narrow the gas flow path, whereby a cross sectional area of said gas flow path in said outer space of said cylindrical solid oxide fuel cells positioned in the inner portion in the middle line of said power generation module is the largest.