Wang, L.W., Metcalf, S.J., Critoph, R.E., Thorpe, R. and Tamainot-Telto, Z.. (2011) Thermal conductivity and permeability of consolidated expanded natural graphite treated with sulphuric acid. Carbon, Vol.49 (No.14). pp. 4812-4819. ISSN 00086223

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Abstract

The thermal conductivity and permeability of consolidated expanded natural graphite treated with sulphuric acid (ENG-TSA) were measured both parallel and perpendicular to the direction of compression used to produce the samples. Results showed that the thermal conductivity and permeability were highly anisotropic. The thermal conductivity perpendicular to the direction of compression was 50 times higher than that parallel to the direction of compression and the permeability was 200 times higher. The maximum thermal conductivity measured was 337 W m(-1)K(-1) at a bulk density of 831 kg m(-3). The permeability perpendicular to the direction of compression varied in the range of 10(-11) to 10(-16) m(2) as the density increased from 111 to 539 kg m(-3). The specific heat was measured, and the average value is 0.89 kJ kg(-1) K(-1) in the temperature range 30-150 degrees C. As a type of heat transfer matrix the thermal diffusivity was about five times higher than that of, for example, pure aluminium due to the combination of improved thermal conductivity with comparatively low density and reasonable specific heat. (C) 2011 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Faculty of Science > Engineering
Journal or Publication Title:	Carbon
Publisher:	Pergamon
ISSN:	00086223
Official Date:	2011
Volume:	Vol.49
Number:	No.14
Number of Pages:	8
Page Range:	pp. 4812-4819
Identification Number:	10.1016/j.carbon.2011.06.093
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Royal Society , AWM Science City Energy Efficiency Project , Natural Science Foundation of China, National 100 Outstanding PhD thesis Foundation in China
Grant number:	50736004, 50806043 (Natural Science Foundation of China)
URI:	http://wrap.warwick.ac.uk/id/eprint/39251

Data sourced from Thomson Reuters' Web of Knowledge

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