Patent ID: 8293415
Filing Date: 2012-10-23
Classification: H01M,Y02E

Abstract:
1. A solid oxide fuel cell device comprising: an elongated ceramic tube having an exterior circumferential surface, an interior circumferential surface, and an interior structure therebetween, and having a reaction zone along a first lengthwise portion configured to be exposed to a heat source to heat the reaction zone to an operating reaction temperature, and at least one cold zone along a second lengthwise portion configured to not be exposed to the heat source to remain at a low temperature below the operating reaction temperature when the reaction zone is heated; a plurality of fuel passages and a plurality of oxidizer passages extending within the interior structure lengthwise along at least a portion of each of the first and second lengthwise portions from respective fuel and oxidizer inlets to respective fuel and oxidizer outlets; an anode associated with each fuel passage and a cathode associated with each oxidizer passage in the reaction zone, the anodes and cathodes being positioned in opposing relation to each other with a solid electrolyte therebetween, wherein the opposing anodes and cathodes and the electrolyte are positioned within the interior structure, and wherein the elongated ceramic tube, in cross section, has a spiral configuration.