✍ Scribed by S.W.K. Yuan; A.R. Urbach; S.M. Volz; J.H. Lee
No coin nor oath required. For personal study only.
A theory is proposed which uses both the permeability and bubble point diameter of the porous plug to characterize the full range operation of the Vapor Liquid Phase Separation (VLPS) of liquid helium. A computer model has been written based on the theory presented in this paper, which gives good correlation with VLPS data in the literature. The predicted performance of the SIRTF flight plug is also presented.
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A phase separator, which separates helium vapour from liquid superfluid helium (He II), is an indispensable device for space cryogenics. The most recent approach to the Space Infrared Telescope Facility (SIRTF) uses a new design concept in which only the detector package is cold at launch, the remai
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