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Selection of insulation for cryogenic transfer lines

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

Publisher
Elsevier Science
Year
1975
Tongue
English
Weight
144 KB
Volume
15
Category
Article
ISSN
0011-2275

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Cool-down studies on vacuum insulated cr
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Analytical and experimental studies on the cool-down of vacuum insulated cryogenic transfer lines have been carried out. An expression for estimating the cool-down history is derived taking into account the gas conduction effects. Experiments were carried out for LN2 flow in glass lines. The cool-do

Dimensioning of cryogenic transfer lines
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Nomenclature a acoustic velocity in vapour at temperature Ta, m s "1 Cp specific heat, kcal kg "1 K "l d diameter of the pipe when vents are provided on the line, m D diameter of the pipe line when vents are not provided, m (unless mentioned otherwise) gc gravitational constant 9.81 kg ms "2 kgf q K

Analytical and experimental investigatio
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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 s