Heat and moisture transport with internal condensation in a fibrous insulation slab with impermeable boundary
Couvillion, R. J. and Hawisa, J. S.
1993 American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED, v 173, p 37-45
Couvillion, R. J. and Hawisa, J. S., (1993), "Heat and moisture transport with internal condensation in a fibrous insulation slab with impermeable boundary", American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED, v 173, p 37-45.
Abstract:
A model of simultaneous heat and mass transport with internal condensation in a fiber-glass insulation slab is developed. An experimental system is described and applied to test the numerical model. The effect of the vapor-retarder, common in most building walls and roof, is investigated using an impermeable boundary condition in the model. Attenuation of a well-collimated AM gamma beam is used to measure the transient distribution of the volumetric moisture content in the insulation slab. The transient liquid content profiles, temperature profiles, and the volumetric condensation rate distributions are obtained. It is found that the numerical solutions of the governing pdes agrees well with the experimental data.
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