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Flow impedance construction for liquid helium continuous refrigerators

✍ Scribed by M. Gauthier; E.J.A. Varoquaux

Publisher
Elsevier Science
Year
1973
Tongue
English
Weight
151 KB
Volume
13
Category
Article
ISSN
0011-2275

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✦ Synopsis

Continuous refrigeration below I K implies the circulation of a cooling fluid. This requires some kind of constriction to limit the flow and allow the build-up of the pressure difference which gives rise to the enthalpy difference on which the cooling process depends. This situation is met by cooling with helium-4 to 1 K, 1,2 with helium-3, to 0.3 K, and also in dilution refrigerators," these flow impedances have to be small, rugged, and hard to plug with dust and oil mist.

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