Experimental and simulation results are presented from an investigation of simultaneous heat air and moisture transport in a loose-fill insulation. The aim of the study was to investigate the thermal and moisture effects of natural air convection with no liquid transport present and to validate a numerical model. The structure was placed between two climate chambers at different temperatures. The quasi-steady-state temperature distribution in the cavity of the structure and transient moisture condition were measured, as well as the material properties. All the results indicated that natural convection in a porous cavity both increases heat flow through the structure and significantly influences moisture redistribution within the structure. Heat flows are predicted quantitatively very well, and moisture distribution fairly well with the model.
Combined heat, air and moisture transport in loose-filled insulation - experiment and simulation.
in: USA, Atlanta, ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.), 2001, ISBN 1-883413-96-6, proceedings of a conference held Sheraton Sand Key Resort, Clearwater Beach, Florida, USA, 2-7 December 2001, CD ROM form