Scaling analysis and numerical studies on water vapour adsorption in a columnar porous silica gel bed

Mitra, Sourav and Aswin, N and Dutta, Pradip (2016) Scaling analysis and numerical studies on water vapour adsorption in a columnar porous silica gel bed. In: INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 95 . pp. 853-864.

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Abstract

This article presents a theoretical analysis of heat and mass transfer in a silica gel + water adsorption process using scaling principles. A two-dimensional columnar packed adsorber domain is chosen for the study, with side and bottom walls cooled and vapour inlet from the top. The adsorption process is initiated from the cold walls with a temperature jump of 15 K, whereas the water vapour supply is maintained at a constant inlet pressure of 1 kPa. The first part of the study is dedicated to deriving relevant scales for the adsorption process by an order of magnitude analysis of energy, continuity and momentum equations. In the latter part, the derived scales are compared with the outcome of numerical studies performed for various domain widths and aspect ratio of bed. A good correlation between scaling and simulation results is observed, thereby validating the scaling approach. (C) 2015 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Publication:	INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Additional Information:	Copy right for this article belongs to the PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Keywords:	Scaling analysis; Water vapour adsorption; Silica gel; Porous bed
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	01 Apr 2016 04:55
Last Modified:	01 Apr 2016 04:55
URI:	http://eprints.iisc.ac.in/id/eprint/53442

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