An experimental study of a phase change storage system
This paper describes the heat transfer process and the movement of the solid-liquid interface when the energy is added to a PCM, paraffin wax, through a vertical wall heated under conditions of uniform heat flux and constant temperature. Experiments indicate that the initial mode of heat transfer...
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my.iium.irep.200492012-05-31T02:34:49Z http://irep.iium.edu.my/20049/ An experimental study of a phase change storage system Hawlader, Mohammad Nurul Alam Smita, Panga TH Building construction This paper describes the heat transfer process and the movement of the solid-liquid interface when the energy is added to a PCM, paraffin wax, through a vertical wall heated under conditions of uniform heat flux and constant temperature. Experiments indicate that the initial mode of heat transfer in the melting process was purely conduction controlled, and early convection due to volumetric expansion of the liquid PCM was followed by the solely buoyancy driven natural convection within the liquid. At this stage, the superheating of the liquid led to a combined convection and conduction mode of heat transfer until eventually conduction became the dominant mode of heat transfer. Superheating and subcooling of the PCM reduce the rate of propagation of the solid-liquid interface. Numerical simulation, based on the enthalpy formulation, indicated the presence of convection in the fluid region of the PCM, which is confirmed by the results from the experiments. IIUM Press 2011 Book Chapter REM application/pdf en http://irep.iium.edu.my/20049/1/an_experimental_study_of_a_phase_-_C4.pdf Hawlader, Mohammad Nurul Alam and Smita, Panga (2011) An experimental study of a phase change storage system. In: Alternative energy. IIUM Press, Kuala Lumpur, pp. 23-29. ISBN 9789674181581 http://rms.research.iium.edu.my/bookstore/Default.aspx |
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TH Building construction Hawlader, Mohammad Nurul Alam Smita, Panga An experimental study of a phase change storage system |
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This paper describes the heat transfer process and the movement of the solid-liquid interface when the
energy is added to a PCM, paraffin wax, through a vertical wall heated under conditions of uniform
heat flux and constant temperature. Experiments indicate that the initial mode of heat transfer in the
melting process was purely conduction controlled, and early convection due to volumetric expansion
of the liquid PCM was followed by the solely buoyancy driven natural convection within the liquid.
At this stage, the superheating of the liquid led to a combined convection and conduction mode of
heat transfer until eventually conduction became the dominant mode of heat transfer. Superheating
and subcooling of the PCM reduce the rate of propagation of the solid-liquid interface. Numerical
simulation, based on the enthalpy formulation, indicated the presence of convection in the fluid region
of the PCM, which is confirmed by the results from the experiments. |
format |
Book Chapter |
author |
Hawlader, Mohammad Nurul Alam Smita, Panga |
author_facet |
Hawlader, Mohammad Nurul Alam Smita, Panga |
author_sort |
Hawlader, Mohammad Nurul Alam |
title |
An experimental study of a phase change storage system |
title_short |
An experimental study of a phase change storage system |
title_full |
An experimental study of a phase change storage system |
title_fullStr |
An experimental study of a phase change storage system |
title_full_unstemmed |
An experimental study of a phase change storage system |
title_sort |
experimental study of a phase change storage system |
publisher |
IIUM Press |
publishDate |
2011 |
url |
http://irep.iium.edu.my/20049/1/an_experimental_study_of_a_phase_-_C4.pdf http://irep.iium.edu.my/20049/ http://rms.research.iium.edu.my/bookstore/Default.aspx |
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1643607815629045760 |
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13.214268 |