Experimental investigation on single-medium stratified thermal energy storage system

Advaith, S and Parida, DR and Aswathi, KT and Dani, N and Chetia, UK and Chattopadhyay, K and Basu, S (2021) Experimental investigation on single-medium stratified thermal energy storage system. In: Renewable Energy, 164 . pp. 146-155.

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Abstract

The demand for renewable energy sources is limited by their inherent intermittent nature. The thermal energy storage technique overcomes this shortcoming by allowing storage of naturally occurring energy (e.g. solar) during �non-peak hours�. The article presents an experimental investigation of the sparsely studied �single medium thermocline� (SMT) based single tank sensible thermal energy storage (TES). The work aims to reconsider its potential by minimizing the fluid dynamic perturbations during the charging cycle which disrupt the stability of the thermocline leading to undesirable energy losses. The article discusses the effect of Atwood number (density stratification) and mean temperature on TES effectiveness as well as providing the appropriate thermodynamic insights. Implementation of the experimental procedures and strategies discussed in this article demonstrates a stable thermocline which persists for more than 6 h (hours) with minimal energy degradation. © 2020 Elsevier Ltd

Item Type:	Journal Article
Publication:	Renewable Energy
Publisher:	Elsevier Ltd
Additional Information:	copyright to this article belongs to Elsevier Ltd
Keywords:	Thermal energy storage, Thermocline, Single medium, Single tank, Thermal stratification
Department/Centre:	Division of Interdisciplinary Sciences > Interdisciplinary Centre for Energy Research Division of Mechanical Sciences > Mechanical Engineering Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	26 Nov 2020 07:42
Last Modified:	26 Nov 2020 07:42
URI:	http://eprints.iisc.ac.in/id/eprint/66727

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