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Analytical and experimental investigation on cool-down of short cryogenic transfer lines

✍ Scribed by K. Srinivasan; V. Seshagiri Rao; M.V. Krishna Murthy

Publisher: Elsevier Science
Year: 1974
Tongue: English
Weight: 484 KB
Volume: 14
Category: Article
ISSN: 0011-2275
DOI: 10.1016/0011-2275(74)90125-8

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✦ Synopsis

Cool-down of cryogenic transfer lines is studied analytically and experimentally. Analytical expressions are derived for estimating cool-down time of uninsulated and vacuum insulated lines. The experimental results prove that for short sections the mass flow-rate does not affect the cool-down very significantly. It is also found that the analytical zero mass flow.rate cool-down curve predicts a reasonably accurate cool-down time for all mass flowrates. The reverse annular flow theory explains many phenomena during cool-down. The cool-down curves are given for uninsulated glass, copper, aluminium and stainless steel pipelines.

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