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Study of sorption based energy storage system with silica gel for heating application

Deshmukh, Harish and Maiya, M P and Murthy, Srinivasa S (2017) Study of sorption based energy storage system with silica gel for heating application. In: APPLIED THERMAL ENGINEERING, 111 . pp. 1640-1646.

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Official URL: http://dx.doi.org/10.1016/j.applthermaleng.2016.07...

Abstract

In this paper, a thermal analysis of the closed silica gel-water adsorption heat storage system is presented. Such systems have the advantage of high energy density and can be used repetitively without the heat loss to the surroundings, contrary to the sensible and latent heat storage systems. The system is designed to store 18 kWh of heat and to deliver it at 3 kW for 6 h at an average temperature lift of 25 K at any later time. Analyses are done to determine the required mass of the silica gel and heat transfer parameters to achieve the desired heating capacity. It is found that 350 kg of silica gel with a heat exchanger capacity of 400 MK is needed for the above performance, at a condenser and evaporator temperatures of 30 and 25 degrees C respectively. Under these conditions an energy density of 42 kWh/m(3) is obtained with an exergetic efficiency of 73%. (C) 2016 Elsevier Ltd. All rights reserved.

Item Type: Journal Article
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Additional Information: Copy right for this article belongs to the PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Department/Centre: Others
Date Deposited: 16 Feb 2017 06:07
Last Modified: 16 Feb 2017 06:07
URI: http://eprints.iisc.ernet.in/id/eprint/56237

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