Compact air preheater for solid oxide fuel cell systems

Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Process or means for control of operation

Reexamination Certificate

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C429S434000, C429S439000, C429S440000, C429S442000

Reexamination Certificate

active

08048583

ABSTRACT:
The present invention provides, among other things, a method of operating a solid oxide fuel cell system including a fuel cell stack. The method can include the acts of combining an exhaust flow from an anode side of the fuel cell stack and an exhaust flow from a cathode side of the fuel cell stack, transferring heat from the combined exhaust flow to a first air flow, and combining a second air flow and the heated first air flow upstream from the fuel cell stack to control a temperature of the combined air flow entering the cathode side of the solid oxide fuel cell.

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patent: 7144644 (2006-12-01), Haltiner, Jr. et al.
patent: 7322405 (2008-01-01), Ogawa
patent: 2003/0054210 (2003-03-01), Gillett et al.
patent: 2004/0013913 (2004-01-01), Fabis et al.
patent: 102005015874 (2006-07-01), None
Office Action from German Patent Office for Application No. 102007033864.5-45 dated Jul. 6, 2009 (7 pages).

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