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A numerical investigation of heat transfer in phase change materials (PCMs) embedded in porous metals

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Tian, Y. (Yuan) and Zhao, Changying (2011) A numerical investigation of heat transfer in phase change materials (PCMs) embedded in porous metals. Energy, Vol.36 (No.9). pp. 5539-5546. doi:10.1016/j.energy.2011.07.019 ISSN 0360-5442.

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Official URL: http://dx.doi.org/10.1016/j.energy.2011.07.019

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Abstract

The effects of metal foams on heat transfer enhancement in Phase Change Materials (PCMs) are investigated. The numerical investigation is based on the two-equation non-equilibrium heat transfer model, in which the coupled heat conduction and natural convection are considered at phase transition and liquid zones. The numerical results are validated by experimental data. The main findings of the investigation are that heat conduction rate is increased significantly by using metal foams, due to their high thermal conductivities, and that natural convection is suppressed owing to the large flow resistance in metal foams. In spite of this suppression caused by metal foams, the overall heat transfer performance is improved when metal foams are embedded into PCM; this implies that the enhancement of heat conduction offsets or exceeds the natural convection loss. The results indicate that for different metal foam samples, heat transfer rate can be further increased by using metal foams with smaller porosities and bigger pore densities.

Item Type: Journal Article
Subjects: Q Science > QC Physics
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Science, Engineering and Medicine > Engineering > Engineering
Library of Congress Subject Headings (LCSH): Heat -- Transmission, Metal foams
Journal or Publication Title: Energy
Publisher: Elsevier Ltd
ISSN: 0360-5442
Official Date: 2011
Dates:
DateEvent
2011Published
Volume: Vol.36
Number: No.9
Number of Pages: 8
Page Range: pp. 5539-5546
DOI: 10.1016/j.energy.2011.07.019
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Date of first compliant deposit: 18 December 2015
Date of first compliant Open Access: 18 December 2015
Funder: Engineering and Physical Sciences Research Council (EPSRC), University of Warwick
Grant number: EP/F061439/1 (EPSRC), RD07110 (UoW)

Data sourced from Thomson Reuters' Web of Knowledge

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