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System and method for cooling a superconducting rotary machine

United States Patent

August 9, 2011
View the Complete Patent at the US Patent & Trademark Office
A system for cooling a superconducting rotary machine includes a plurality of sealed siphon tubes disposed in balanced locations around a rotor adjacent to a superconducting coil. Each of the sealed siphon tubes includes a tubular body and a heat transfer medium disposed in the tubular body that undergoes a phase change during operation of the machine to extract heat from the superconducting coil. A siphon heat exchanger is thermally coupled to the siphon tubes for extracting heat from the siphon tubes during operation of the machine.
Ackermann; Robert Adolf (Schenectady, NY), Laskaris; Evangelos Trifon (Schenectady, NY), Huang; Xianrui (Clifton Park, NY), Bray; James William (Niskayuna, NY)
General Electric Company (Niskayuna, NY)
11/ 009,146
December 10, 2004
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH & DEVELOPMENT This invention was made with Government support under contract number DE-FC36-02-GO11100 awarded by Department of energy. The Government has certain rights in the invention.