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Recuperator construction for a gas turbine engine

United States Patent

December 12, 2006
View the Complete Patent at the US Patent & Trademark Office
A counter-flow recuperator formed from annular arrays of recuperator core segments. The recuperator core segments are formed from two opposing sheets of fin fold material coined to form a primary surface zone disposed between two flattened manifold zones. Each primary surface zone has undulating corrugations including a uniform, full height central portion and a transition zone disposed between the central portion and one of the manifold zones. Corrugations of the transition zone rise from zero adjacent to the manifold zone and increase along a transition length to full crest height at the central portion. The transition lengths increase in a direction away from an inner edge containing the air inlet so as to equalize air flow to the distal regions of the primary surface zone.
Kang; Yungmo (La Canada Flintridge, CA), McKeirnan, Jr.; Robert D. (Westlake Village, CA)
Capstone Turbine Corporation (Chatsworth, CA)
10/ 917,107
August 12, 2004
This invention was made in conjunction with the US Department of Energy's Advanced Microturbine System Project under contract number DE-FC02-00CH11058. The United States government may have certain rights in this invention.