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Enhanced heat transfer from an HTS element in a cryogenic bath

United States Patent Application

20090221426
A1
View the Complete Application at the US Patent & Trademark Office
The fault current limiter in a cryogenic liquid heat transfer medium, employs a high temperature superconductor (HTS) element which has a high thermal resistance coating material encapsulating the high temperature superconductor to form an intermediate boundary layer between the HTS element and the heat transfer medium. The coating material has a thickness which enables it to minimize the retained heat in the HTS element during recovery from a fault condition, wherein substantially all heat transfer from the encapsulated high temperature superconductor element to the liquid cryogen heat transfer medium occurs at the nucleate boiling heat transfer rate.
Hazelton, Drew Willard (Selkirk, NY)
SuperPower, Inc.
11/ 321,846
December 29, 2005
[0001] The U.S. government has a paid-up license in this invention and the right in limited circumstances to require the patent owner to license others on reasonable terms as provided for in the terms of Contract No. DE-FC36-03G013033 awarded by the Department of Energy.