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Application of the transient hot-wire technique to the measurement of the thermal conductivity of solids

Assael, M.J., Dix, M., Gialou, K., Vozar, L. and Wakeham, W.A. (2002) Application of the transient hot-wire technique to the measurement of the thermal conductivity of solids International Journal of Thermophysics. Proceedings of the Fifteenth Symposium on Thermophysical Properties, Part II, 23, (3), pp. 615-633. (doi:10.1023/A:1015494802462).

Record type: Article


A novel application of the transient hot-wire technique for thermal conductivity measurements is described. The new application is intended to provide an accurate means of implementation of the method to the determination of the thermal conductivity of solids exemplified by a standard reference ceramic material. The methodology makes use of a soft-solid material between the hot wires of the technique and the solid of interest. Measurements of the transient temperature rise of the wires in response to an electrical heating step in the wires over a period of 20 ? s to 10 s allows an absolute determination of the thermal conductivity of the solid. The method is based on a full theoretical model with equations solved by finite-element method applied to the exact geometry. The uncertainty achieved for the thermal conductivity is better than ±1%, and for the product (? C p) about ±3%. The whole measurement involves a temperature rise less than 4 K.

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Published date: 2002
Keywords: ceramic, solid, thermal conductivity, transient hot-wire


Local EPrints ID: 39564
ISSN: 0195-928X
PURE UUID: f6e49ffc-f3e0-4fdd-ab22-e136dd7440a3

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Date deposited: 30 Jun 2006
Last modified: 17 Jul 2017 15:36

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Author: M.J. Assael
Author: M. Dix
Author: K. Gialou
Author: L. Vozar
Author: W.A. Wakeham

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