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✦   LIBER   ✦

A new technique for the analysis of torque tube heat exchangers of superconducting generators

✍ Scribed by Pradeep Kumar Sahoo; Sunil Sarangi

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
610 KB
Volume
36
Category
Article
ISSN
0011-2275

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✦ Synopsis

The torque tubes of a superconducting generator belong to a unique class of heat exchangers where a single fluid stream (boil off helium vapour) exchanges heat with a metallic wall conducting heat from the ambient to the cold (liquid helium) space. The rate of heat leak to the cold space is the chief indicator of the performance of the exchanger. This rate of heat inleak has been found to be a function of two dimensionless parameters: a generalized cooling parameter A* and a temperature range parameter T. A generalized design chart is presented which expresses the dimensionless heat flow rate 0, in terms of the parameters A* and q. This chart will be useful for the design of torque tubes and vapour-cooled support members in cryogenic systems.

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