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Permanent link (DOI): https://doi.org/10.7939/R3S69G

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Exploration of the effects of pressure and temperature on the evaporation rate of selected liquids Open Access

Descriptions

Other title
Subject/Keyword
pressure
evaporations rates
temperature
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Jafarnejad, Aydin
Supervisor and department
Dr. Larry W. Kostiuk (Mechanical Engineering)
Examining committee member and department
Dr. Janet A. W. Elliott (Chemical Engineering)
Dr. Morris R. Flynn (Mechanical Engineering)
Department
Department of Mechanical Engineering
Specialization

Date accepted
2009-09-25T15:08:26Z
Graduation date
2009-11
Degree
Master of Science
Degree level
Master's
Abstract
The rate of evaporation of liquids has been a topic of research for over a century. A detailed understanding of this phenomena is required to make scientific advancements in various areas. The principal objective for conducting this work was to study the effect of pressure on the rate of evaporation of liquids in close to equilibrium conditions, and further increase the much needed lack of existing data sets for evaporation of liquids in any such controlled environment. The experimental setup involved two glass cannisters, each containing four glass capillaries. The capillaries were filled with liquid at various levels, and tests were preformed at fixed temperatures while the containers maintained vacuum. This initial condition was not at equilibrium and liquid from the capillaries slowly evaporated. By measuring the change in liquid height in the capillaries the net rate of evaporation was estimated. The experimental results suggested that even though, as thought before, pressure has a role in determining the rate of evaporation of liquids, for the case where the evaporation takes place from a receding meniscus inside a capillary tube, the rate of vapor diffusion out and away from an evaporating meniscus could be equally as important, and the pressure build up above an evaporating meniscus entrapped inside a capillary tube could impede the evaporation rate.
Language
English
DOI
doi:10.7939/R3S69G
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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