A unified empirical correlation for evaporation of water at low air velocities

doi:10.1016/S0735-1933(98)00005-0

International Communications in Heat and Mass Transfer

Volume 25, Issue 2, February 1998, Pages 183-190

https://doi.org/10.1016/S0735-1933(98)00005-0 Get rights and content

Abstract

This paper presents a simple empirical correlation to predict the rate of water evaporation from small exposed water bodies. The correlation is a function of air velocity and difference between saturated vapour pressure of water body and partial water vapour pressure of the surrounding air. Earlier correlations were valid only for either still air or for minimum air velocities from 0.9 m/s whereas this correlation can predict the rate of water evaporation even from still air to air velocities up to 5.36 m/s. The correlation is particularly relevant to predicting the evaporation rates of defrosted water in domestic refrigerators where the air velocities in home kitchen environment are very low ie. between 0 and 0.9 m/s.

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P.F. Incropera et al.
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P.J. Ryan et al.
Water Resources Research
(1974)

There are more references available in the full text version of this article.

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^J: Dr. Xie is a visiting Research Fellow at the University of Auckland from Xi'an Jiaotong University, China

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A unified empirical correlation for evaporation of water at low air velocities

Abstract

Int. J. Refrigeration

Fundamentals of Heat and Mass Transfer

Water Resources Research