THERMAL SCIENCE

International Scientific Journal

Kaoutar Zine-Dine

,

Youness El Hammami

,

Rachid Mir

,

Touria Mediouni

,

Sara Armou

EFFECT OF THE NON CONDENSABLE GAS TYPE DURING CONDENSATION OF WATER VAPOR

ABSTRACT
In this paper, a numerical study is performed to investigate the influence of the non˗condensable gas type in a vapor mixture of water gas (water vapor˗krypton, water vapor˗argon, water vapor˗air, and water vapor˗neon) during the condensation along a vertical pipe with a wall cooled by air-flow. The applied numerical method solves the coupled parabolic governing equations in both gas and liquid phases with the appropriate boundary and interfacial conditions. The equations systems, obtained by using an implicit finite difference method are solved by Thomas algorithm. The numerical results obtained show that the heat and mass transfer is influenced by increasing the molar mass of non˗condensable gases. The comparisons of air mass fraction, bulk temperature, local condensate heat transfer coefficient, and average Nusselt number of sensible heat with the literature results and the available experimental data are in good agreement.
KEYWORDS
condensation, non-condensable gas, phase change, heat and mass transfer, molar mass
PAPER SUBMITTED: 2016-06-12
PAPER REVISED: 2016-11-02
PAPER ACCEPTED: 2016-11-07
PUBLISHED ONLINE: 2016-12-03
DOI REFERENCE: https://doi.org/10.2298/TSCI160612294Z
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2017, VOLUME 21, ISSUE Issue 6, PAGES [2457 - 2468]
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Effect of the non condensable gas type during condensation of water vapor

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence