Analysis of the evaporation coefficients of water, heavy water, and methanol in a high vacuum environment

•Evaporation coefficients are determined for water, heavy water & methanol in vacuum.•Liquid heat transfer is modelled with Knudsen's equation as the boundary condition.•Simulated temperatures are fit to the temperatures measured from Raman thermometry.•The results suggest a value of αe=1 f...

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Bibliographic Details
Published in:International journal of heat and mass transfer 2023-05, Vol.204, p.123833, Article 123833
Main Authors: Kazemi, Mohammad Amin, Zandavi, S. Hadi, Zargartalebi, Mohammad, Sinton, David, Elliott, Janet A. W．
Format: Article
Language:English
Subjects:
Droplet train
Evaporation coefficient
Kinetic theory of gases
Liquid jet
Low pressure
Raman thermometry
Temperature decline
Vacuum
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Summary:•Evaporation coefficients are determined for water, heavy water & methanol in vacuum.•Liquid heat transfer is modelled with Knudsen's equation as the boundary condition.•Simulated temperatures are fit to the temperatures measured from Raman thermometry.•The results suggest a value of αe=1 for water and αe=0.725 for heavy water.•For methanol, αe is almost unity but may exceed unity (1.5
ISSN:0017-9310
1879-2189
DOI:10.1016/j.ijheatmasstransfer.2022.123833