Moisture Transport Through Glass-Fibre Insulation in the Presence of a Thermal Gradient

Abstract

A heat flow meter apparatus is used to monitor the heat flux across a moist speci men of a low density glass-fibre insulation. The results indicate that moisture is transported through the specimen predominately by vapour diffusion. A thermo dynamic model is suggested to represent the transport process. This model leads to two moisture transport coefficients characteristic of the specimen.