Journal
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
Volume 72, Issue -, Pages 329-335Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2014.01.021
Keywords
Melting; Energy storage; Phase change material; Scale analysis; Natural convection
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Funding
- National Renewable Energy Laboratory
- Hong Kong Research Grant Council (RGC) General Research Fund [PolyU 5241/11E]
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [1347188] Funding Source: National Science Foundation
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This paper documents the fundamentals of heat storage by melting a phase-change material inside a cylindrical enclosure with a vertical heated pipe on its axis. The phenomenon is studied analytically and numerically. The analysis consists of the scale analysis of the early stages of natural convection in the liquid, and an analysis of the entire duration of the melting process. The numerical simulations cover the entire process, and validate all the features predicted by theory. (C) 2014 Elsevier Ltd. All rights reserved.
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