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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 John, 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. ISSN 1359-4311

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

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

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:

Date	Event
September 2010	Published

Volume:

Vol.30

Number:

No.13

Number of Pages:

Page Range:

pp. 1805-1811

Identification Number:

10.1016/j.applthermaleng.2010.04.014

Status:

Peer Reviewed

Publication Status:

Published

Access rights to Published version:

Restricted or Subscription Access

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)

References:

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URI:

http://wrap.warwick.ac.uk/id/eprint/5559

Data sourced from Thomson Reuters' Web of Knowledge

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