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Numerical study of ice melting inside rectangular capsule under cyclic temperature of heat transfer fluid
Faculty
Science
Year:
2007
Type of Publication:
Article
Pages:
124-130
Authors:
Elsayed, Amr O
DOI:
10.1016/j.enconman.2006.05.006
Journal:
ENERGY CONVERSION AND MANAGEMENT PERGAMON-ELSEVIER SCIENCE LTD
Volume:
48
Research Area:
Thermodynamics; Energy \& Fuels; Mechanics; Physics
ISSN
ISI:000242103800014
Keywords :
ice melting, cyclic coolant temperature, rectangular ice capsule, cool thermal storage, energy storage
Abstract:
The periodic melting of encapsulated ice for cold thermal energy storage has been investigated numerically. A horizontal rectangular container is used as a storage capsule, since warm coolant fluid (glycol) flows over the upper and lower walls of the capsule, melting the ice. The enthalpy method is employed to model the phase change at the two moving interfaces. The effect of cyclic time variant coolant fluid temperature on the heat transfer efficiency and the corresponding energy stored has been investigated. Also, the influence of the convection heat transfer coefficient and coolant fluid temperature on the melting behavior has been studied and reported. The results show that the coolant fluid temperature markedly affects the melting behavior rather than the convection heat transfer coefficient. (c) 2006 Elsevier Ltd. All rights reserved.
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