Performance evaluation and determination of minimum desorption temperature of a two-stage air cooled silica gel/water adsorption system

Mitra, Sourav and Thu, Kyaw and Saha, Bidyut Baran and Dutta, Pradip (2017) Performance evaluation and determination of minimum desorption temperature of a two-stage air cooled silica gel/water adsorption system. In: APPLIED ENERGY, 206 . pp. 507-518.

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Abstract

This paper presents an in-depth numerical and thermodynamic study of a two-stage, 2-bed silica gel/water adsorption system for simultaneous generation of cooling power and potable water. The system is air cooled where the ambient temperature remains constant at 36 degrees C. The first part of this paper investigates the effect of cycle time, chilled water inlet and heat source temperature on system performance viz. specific cooling capacity (SCC), specific daily water production (SDWP) and coefficient of performance (COP). A significant outcome of this study is to show that decrease in heat source temperature not only reduces the specific throughput but also increases the optimum cycle time, whereas COP is relatively insensitive to such alterations. The second part of this paper discusses the estimation of the minimum desorption temperature from the simulated system throughput results as well as from fundamental thermodynamic analysis of a two-stage adsorption cycle. This thermodynamic analysis provides a theoretical limit for minimum desorption temperature and optimal inter stage pressure for a two-stage adsorption cycle.

Item Type:	Journal Article
Publication:	APPLIED ENERGY
Additional Information:	Copy right for this article belongs to the ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	26 Dec 2017 06:01
Last Modified:	26 Dec 2017 06:01
URI:	http://eprints.iisc.ac.in/id/eprint/58433

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