Water-vapour diffusion through fibrous thermal insulants

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

Applied Energy, 1981, vol. 8, issue 3, 193-204

Abstract: The variation of water-vapour permeability k* with changes in bulk density has been measured for various fibrous insulants and the results compared with those obtained using the British Standard dry-cup and wet-cup methods. An exponential relationship of the form k* exp(1/V[nu]) was obtained, where V[nu] is the volume voidage.

Date: 1981
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