US 7,320,836 B2 | ||
Integral air preheater and start-up heating means for solid oxide fuel cell power generators | ||
Robert Draper, Pittsburgh, Pa. (US); Michael P. Jaszcar, Murrysville, Pa. (US); Paolo R. Zafred, Murrysville, Pa. (US); James E. Gillett, Greensburg, Pa. (US); and Matthew Riggle, Ford City, Pa. (US) | ||
Assigned to Siemens Power Generation, Inc., Orlando, Fla. (US) | ||
Filed on Dec. 05, 2003, as Appl. No. 10/729,198. | ||
Prior Publication US 2005/0123808 A1, Jun. 09, 2005 | ||
Int. Cl. H01M 8/00 (2006.01); H01M 8/04 (2006.01); H01M 8/10 (2006.01); H01M 2/00 (2006.01); H01M 2/14 (2006.01) |
U.S. Cl. 429—13 [429/17; 429/26; 429/31; 429/34; 429/38] | 17 Claims |
15. A method of operating a high temperature solid oxide electrolyte fuel cell generator which reacts feed fuel and feed oxidant
at interior fuel cell surfaces comprising:
1.) feeding oxidant into at least one separate interior heat transfer zone within the fuel cell generator through oxidant
feed tubes, where said zone contains oxidant feed tubes therethrough which pass to fuel cells, and where there is an annular
space around the oxidant feed tubes within said zone;
2.) contacting the oxidant feed tubes within the at least one separate interior heat transfer zone with exhaust spent fuel
and spent oxidant products from a separate combustion chamber disposed above the fuel cells and below the separate interior
heat transfer zone, which spent products pass through the annular space around the oxidant feed tubes to a separate exhaust
chamber above the interior heat transfer zone; and then
3.) exhausting cooled exhaust from the fuel cell generator.
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