THERMAL SCIENCE

International Scientific Journal

Mohamed Bechir Ben Hamida

,

Jalel Belghaieb

,

Nejib Hajji

NUMERICAL STUDY OF HEAT AND MASS TRANSFER ENHANCEMENT FOR BUBBLE ABSORPTION PROCESS OF AMMONIA-WATER MIXTURE WITHOUT AND WITH NANOFLUIDS

ABSTRACT
This paper presents a detailed analysis of a combined heat and mass transfer enhancement by using binary nanofluid in NH3/H2O bubble absorption processes. A differential mathematical model of ammonia-water absorption has been developed on the basis of mass and energy balances and heat and mass transfer equations, in order to analyses the effects of binary nanofluid on ammonia absorption. A finite difference technique was employed to solve the numerical model. A parametric analysis was conducted to assess the effect of key parameters: the effective absorption rate, the concentration of nanoparticles, kinds of additives of nanoparticles, the bubble diameter, and the gas holdup on the performance of the absorber. As expected, the addition of nanoparticles enhances the absorption performance during the bubble absorption process. Also, it is found that the highest effective absorption ratio was reported for solution with copper. The concentration of nanoparticles has a significant effect on the absorber size. This article has been corrected. Link to the correction 10.2298/TSCI190203033E
KEYWORDS
nanofluid, ammonia-water, bubble absorption, mass transfer, heat transfer
PAPER SUBMITTED: 2017-03-13
PAPER REVISED: 2017-07-30
PAPER ACCEPTED: 2017-07-30
PUBLISHED ONLINE: 2017-12-03
DOI REFERENCE: https://doi.org/10.2298/TSCI170313229B
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2018, VOLUME 22, ISSUE Issue 6, PAGES [3107 - 3120]
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Numerical study of heat and mass transfer enhancement for bubble absorption process of ammonia-water mixture without and with nanofluids

© 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