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Anisotropic thermal conductivity and permeability of compacted expanded natural graphite

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Wang, L. W., Tamainot-Telto, Zacharie, Metcalf, Steven J., Critoph, Robert E. and Wang, R. Z. (2010) Anisotropic thermal conductivity and permeability of compacted expanded natural graphite. Applied Thermal Engineering, Vol.30 (No.13). pp. 1805-1811. doi:10.1016/j.applthermaleng.2010.04.014 ISSN 1359-4311.

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Official URL: http://dx.doi.org/10.1016/j.applthermaleng.2010.04...

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Abstract

The anisotropic thermal conductivities and permeabilities are investigated for discs and plates of compacted expanded natural graphite. The measuring directions of heat conductivity and permeability are both parallel and perpendicular to the pressing direction of compacted samples. An unexpected phenomenon is found in that the thermal conductivity sometimes decreases as the density of the material increases, and this phenomenon only occurs for thermal conduction parallel to the compressing direction. The results also indicate that the direction perpendicular to the compression direction shows higher thermal conductive properties and permeability values. Both anisotropic thermal conductivities and permeabilities are strongly dependent on density. Analysis shows that as a type of porous material, the ENG yields layers under the effect of pressure, and their orientation influences the values of heat conductivity and permeability of the different samples.

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 and Medicine > Engineering > Engineering
Library of Congress Subject Headings (LCSH): Thermal conductivity, Graphite -- Permeability, Anisotropy
Journal or Publication Title: Applied Thermal Engineering
Publisher: Pergamon
ISSN: 1359-4311
Official Date: September 2010
Dates:
DateEvent
September 2010Published
Volume: Vol.30
Number: No.13
Number of Pages: 7
Page Range: pp. 1805-1811
DOI: 10.1016/j.applthermaleng.2010.04.014
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Date of first compliant deposit: 3 December 2015
Date of first compliant Open Access: 3 December 2015
Funder: Engineering and Physical Sciences Research Council (EPSRC), Guo jia zi ran ke xue ji jin wei yuan hui (China) [National Natural Science Foundation of China] (NSFC)
Grant number: 50736004 (NSFC), 50806043 (NSFC)

Data sourced from Thomson Reuters' Web of Knowledge

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