Method of cooling a current feed for very low temperature electrical equipment and device for implementing it
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United States of America Patent
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Jun 7, 1994
Grant Date -
N/A
app pub date -
Nov 19, 1991
filing date -
Nov 20, 1990
priority date (Note) -
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Abstract
A current feed extends between a terminal at ambient temperature and an electrical equipment immersed in a cryogenic fluid and adapted to operate at variable current. The current feed is cooled by circulating an auxiliary cooling fluid at ambient temperature exchanging heat with the current feed. The auxiliary cooling fluid is introduced at an intermediate level of the current feed when the current exceeds a particular threshold and optionally all or some of the auxiliary cooling fluid is introduced at other levels nearer the electrical equipment at higher currents.
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