Apparent thermal conductivity of glass-fibre insulant: effects of compression and moisture content

W. J. Batty, P. W. O'Callaghan and S. D. Probert

Applied Energy, 1981, vol. 9, issue 1, 55-76

Abstract: The line source thermal probe technique was validated and used to measure the apparent thermal conductivities of commercially available dry and moist glass-fibre blankets under various compressions. For the dry insulant, a minimum apparent thermal conductivity of 0·039 W m-1 K-1 occurred at ~ 20°C for optimal values of bulk density--and consequently of volume voidage--of 0·45 kg m-3 and 0·985, respectively. Observations for the apparent thermal conductivities of moist insulants did not agree with theoretical predictions but were corroborated by the experimental results of other investigators.

Date: 1981
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