Performance evaluation of a two-stage silica gel plus water adsorption based cooling-cum-desalination system

Mitra, Sourav and Kumar, Pramod and Srinivasan, Kandadai and Dutta, Pradip (2015) Performance evaluation of a two-stage silica gel plus water adsorption based cooling-cum-desalination system. In: INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID, 58 . pp. 186-198.

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Abstract

The first objective of this paper is to show that a single-stage adsorption based cooling-cum-desalination system cannot be used if air cooled heat rejection is used under tropical conditions. This objective is achieved by operating a silica gel + water adsorption chiller first in a single-stage mode and then in a 2-stage mode with 2 beds/stage in each case. The second objective is to improve upon the simulation results obtained earlier by way of empirically describing the thermal wave phenomena during switching of operation of beds between adsorption and desorption and vice versa. Performance indicators, namely, cooling capacity, coefficient of performance and desalinated water output are extracted for various evaporator pressures and half cycle times. The improved simulation model is found to interpret experimental results more closely than the earlier one. Reasons for decline in performance indicators between theoretical and actual scenarios are appraised. (C) 2015 Elsevier Ltd and IIR. All rights reserved.

Item Type:	Journal Article
Publication:	INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
Publisher:	ELSEVIER SCI LTD
Additional Information:	Copy right for this article belongs to the ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
Keywords:	Silica gel plus water adsorption; Two-stage operation; Cooling and desalination
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	03 Dec 2015 04:49
Last Modified:	03 Dec 2015 04:49
URI:	http://eprints.iisc.ac.in/id/eprint/52850

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