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

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

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.

Suggested Citation

  • Batty, W. J. & O'Callaghan, P. W. & Probert, S. D., 1981. "Apparent thermal conductivity of glass-fibre insulant: effects of compression and moisture content," Applied Energy, Elsevier, vol. 9(1), pages 55-76, September.
    • Handle: RePEc:eee:appene:v:9:y:1981:i:1:p:55-76
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