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Two-dimensional simulation of a cylinderical latent heat thermal energy storage system

Citation

Seddegh, S and He, Z and Wang, X and Henderson, AD, Two-dimensional simulation of a cylinderical latent heat thermal energy storage system, Refrigeration and Technology Proceedings, 31 August - 2 September 2014, Hangzhou, China, pp. 1-8. ISBN 978-2-36215-004-3 (2014) [Refereed Conference Paper]

Copyright Statement

Copyright 2014 The International Institute of Refrigeration

Official URL: http://www.iifiir.org/medias/medias.aspx?INSTANCE=...

Abstract

Phase change material-based latent heat thermal energy storage (LHTES) systems offer an effective way to improve the energy storage capacity and efficiency in building heating. In this paper, a two-dimensional computational model is developed to study the thermal behaviour and heat transfer characteristics of a cylindrical LHTES system. This model is based on the thermal conduction in the phase change material. It is first validated with the experimental data and then used to study the thermal behaviour and heat transfer characteristics of a cylindrical LHTES system for consecutive charging and discharging processes. Contours of temperature distribution and liquid volume fraction in the phase change material are studied and compared with the experimental data. It is found that the thermal conduction assumption is sufficient to model the discharging process as the predicted results agree well with the experimental data. However, during the charging process, the charging time calculated using the thermal conduction model is approximately 30% longer than the experimental charging time. It proves that the convective heat transfer caused by buoyancy in the liquid phase plays an important role in the LHTES system. Further research is required to better understand the heat transfer between heat exchanger surfaces and phase change materials, and in particular, the interactions between the solid and liquid phases of the phase change material.

Item Details

Item Type:Refereed Conference Paper
Keywords:energy storage, phase change material (PCM), heat transfer
Research Division:Engineering
Research Group:Mechanical Engineering
Research Field:Energy Generation, Conversion and Storage Engineering
Objective Division:Energy
Objective Group:Energy Conservation and Efficiency
Objective Field:Commercial Energy Conservation and Efficiency
Author:Seddegh, S (Mr Saeid Seddegh Kiyaroudi)
Author:Wang, X (Associate Professor Xiaolin Wang)
Author:Henderson, AD (Dr Alan Henderson)
ID Code:94190
Year Published:2014
Deposited By:Engineering
Deposited On:2014-09-02
Last Modified:2015-03-20
Downloads:0

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