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Thermal conductivity measurement of insulating materials with a three layer device.

Author(s) : JANNOT Y., DEGIOVANNI A., PAYET G.

Type of article: Article

Summary

This paper presents a new method dedicated to thermal conductivity measurement of low-density insulating materials. The three layers experimental device (brass/sample/brass) and the principle of the measurement based on a pulsed method are presented. The three-dimensional modelling of the system is used for a sensitivity analysis. The estimation method is described and applied to experimental measurements carried out at atmospheric pressure and under vacuum. The authors conclude that the thermal conductivity is estimated with a precision better than 5% and that the precision of the thermal diffusivity estimation depends on the density of the material. [Reprinted with permission from Elsevier. Copyright, 2008].

Details

  • Original title: Thermal conductivity measurement of insulating materials with a three layer device.
  • Record ID : 2009-1066
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 52 - n. 5-6
  • Publication date: 2009/01

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