Wu, Z. G. and Zhao, Chang-Ying. (2011) Experimental investigations of porous materials in high temperature thermal energy storage systems. Solar Energy, Vol.85 (No.7). pp. 1371-1380. ISSN 0038-092X

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Abstract

In this paper, the feasibility of using porous materials such as metal foams and expanded graphite to enhance the heat transfer capability of PCMs in high temperature thermal energy storage system is experimentally investigated. Experimental results showed that the heat transfer rate can be enhanced through addition of the porous materials by 2.5 times compared to that of pure NaNO3 in the heating process from 250–300 °C. However the heat transfer rate could be reduced by half in the liquid region since the natural convection can be severely suppressed by the porous structures. In an attempt to further reveal the natural convection effect in PCMs embedded in porous materials, two heating methods (boundary conditions) are examined. Finally the issue of corrosion process is briefly discussed.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics T Technology > TA Engineering (General). Civil engineering (General) T Technology > TJ Mechanical engineering and machinery
Divisions:	Faculty of Science > Engineering
Library of Congress Subject Headings (LCSH):	Phase transformations (Statistical physics)
Journal or Publication Title:	Solar Energy
Publisher:	Elsevier Ltd.
ISSN:	0038-092X
Date:	July 2011
Volume:	Vol.85
Number:	No.7
Number of Pages:	10
Page Range:	pp. 1371-1380
Identification Number:	10.1016/j.solener.2011.03.021
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Engineering and Physical Sciences Research Council (EPSRC)
Grant number:	EP/F061439/1 (EPSRC)
URI:	http://wrap.warwick.ac.uk/id/eprint/35609

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