Heat exchanger for solid oxide fuel cell stack

Details Heat exchanger for solid oxide fuel cell stack Heat exchanger for solid oxide fuel cell stack

H - Electricity

01

M

H01M 8/04 (2006.01) F28D 21/00 (2006.01) H01M 8/12 (2006.01) H01M 8/24 (2006.01)

Patent

CA 2452938

This invention relates to a solid oxide fuel cell system comprising a fuel cell stack and a heat exchanger wrapped around the stack. The fuel cell stack comprises at least one tubular solid oxide fuel cell; the fuel cell comprises a pair of concentrically arranged electrode layers sandwiching a concentrically arranged electrolyte layer. The heat exchanger wraps around the fuel cell stack and comprises a flexible, thermally conductive first layer and an overlapping flexible, thermally conductive second layer spaced from the first layer. The first and second layers define adjacent annular oxidant supply and oxidant exhaust channels when wrapped around the stack. The exhaust channel is communicative with heated exhaust oxidant flowing from the stack, and the oxidant supply channel is communicative with supply oxidant that flows to the stack and is heated by heated exhaust oxidant in the adjacent oxidant exhaust channel and from heat radiating from the stack.

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