Mechanics of Cooling Liquids by Forced Evaporation in Bubbles

Michiel A.J. Van Limbeek*, D. Van Buuren, M. R.P. Van Den Broek, H. J.M. Ter Brake, S. Vanapalli

*Corresponding author for this work

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Abstract

The injection of a nondissolvable gas into a saturated liquid results in subcooling of the liquid due to forced evaporation into the bubble. Previous studies have assumed the rate of evaporation of liquid into the bubble to be independent of the degree of subcooling. In our study, we quantify the bubble growth by direct observation using high-speed imaging and prove that this hypothesis is not true. A phenomenological model of the bubble growth as a function of the degree of subcooling is developed and we find excellent agreement between the measurements and theory. This bubble-cooling process is employed in cooling a liquid. By identification of all heat flows, we can describe the cool-down curve well using bubble cooling, which provides an alternative cooling method for liquids without the use of complicated techniques.

Original languageEnglish
Article number054038
JournalPhysical review applied
Volume11
Issue number5
DOIs
Publication statusPublished - 14 May 2019

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liquid cooling
bubbles
evaporation
cooling
liquids
heat transmission
high speed
injection
curves
gases

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Van Limbeek, Michiel A.J. ; Van Buuren, D. ; Van Den Broek, M. R.P. ; Ter Brake, H. J.M. ; Vanapalli, S. / Mechanics of Cooling Liquids by Forced Evaporation in Bubbles. In: Physical review applied. 2019 ; Vol. 11, No. 5.
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Mechanics of Cooling Liquids by Forced Evaporation in Bubbles. / Van Limbeek, Michiel A.J.; Van Buuren, D.; Van Den Broek, M. R.P.; Ter Brake, H. J.M.; Vanapalli, S.

In: Physical review applied, Vol. 11, No. 5, 054038, 14.05.2019.

Research output: Contribution to journalArticleAcademicpeer-review

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AB - The injection of a nondissolvable gas into a saturated liquid results in subcooling of the liquid due to forced evaporation into the bubble. Previous studies have assumed the rate of evaporation of liquid into the bubble to be independent of the degree of subcooling. In our study, we quantify the bubble growth by direct observation using high-speed imaging and prove that this hypothesis is not true. A phenomenological model of the bubble growth as a function of the degree of subcooling is developed and we find excellent agreement between the measurements and theory. This bubble-cooling process is employed in cooling a liquid. By identification of all heat flows, we can describe the cool-down curve well using bubble cooling, which provides an alternative cooling method for liquids without the use of complicated techniques.

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