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Passively cooled direct drive wind turbine

United States Patent

March 18, 2008
View the Complete Patent at the US Patent & Trademark Office
U.S. Department of Energy - Visit the Office of the Assistant General Counsel for Technology Transfer & Intellectual Property Website
A wind turbine is provided that passively cools an electrical generator. The wind turbine includes a plurality of fins arranged peripherally around a generator house. Each of the fins being oriented at an angle greater than zero degrees to allow parallel flow of air over the fin. The fin is further tapered to allow a constant portion of the fin to extend beyond the air stream boundary layer. Turbulence initiators on the nose cone further enhance heat transfer at the fins.
Costin; Daniel P. (Chelsea, VT)
Distributed Energy Systems Corporation (Wallingford, CT)
11/ 287,959
November 28, 2005
FEDERAL RESEARCH STATEMENT This invention was made with Government support under contract DE-FC36-03GO13131 awarded by the Department of Energy. The Government has certain rights in this invention.