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

Author:

Kumaran M.K.1

Affiliation:

1. Building Services Section Institute for Research in Construction National Research Council of Canada Ottawa, Ontario, Canada, K1A 0R6

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.

Publisher

SAGE Publications

Subject

General Engineering

Reference4 articles.

1. Moisture Migration in Fibrous Insulating Materials Under the Influence of a Thermal Gradient and Its Effect on Thermal Resistance

2. ASTM standard test method C518 "Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter." 1981 Annual book of ASTM standards, p 224.

3. CRC Handbook of Chemistry and Physics 66th edition, pp D-171 and D-189 (1985)

4. ASTM standard test method C355. "Standard Test Method for Water Vapor Transmission of Thick Materials" 1981 Annual book of ASTM standards, p 124.

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