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Film condensation heat transfer of helium in a vertical tube

✍ Scribed by S. Sato; H. Ogata

Publisher
Elsevier Science
Year
1976
Tongue
English
Weight
260 KB
Volume
16
Category
Article
ISSN
0011-2275

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✦ Synopsis

Helium was condensed on the wall of a vertical copper tube (14 mm in diameter, 32 mm long) in the experimental range: vapour temperature in the tube -4. 1-5.0 K; heat flux -0.5-86 mW cm-2; temperature differences across a liquid film -0.01-1.3 K; film Reynolds numbers -3-380. It was found that the heat flux increased linearly with the film temperature difference, yielding a constant heat transfer coefficient of about 0.065 W cm -2 K -~. The discrepancy between the experimental results and the laminar condensation theory is also considered.

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