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Abstract
Low-density thermal insulation foams demonstrate an increase in thermal conductivity (or reduction in R-value) with increased water content in the foam interior. The rate and amount of moisture transport through closed-cell foamed plastics differ for liquid water and water vapor by approximately an order of magnitude. Water vapor penetrates foamed plastics, such as closed-cell thermal insulations, much more readily when it is subject to thermal and water vapor pressure gradients.
Low-density thermal insulation foams demonstrate an increase in thermal conductivity (or reduction in R-value) with increased water content in the foam interior. The rate and amount of moisture transport through closed-cell foamed plastics differ for liquid water and water vapor by approximately an order of magnitude. Water vapor penetrates foamed plastics, such as closed-cell thermal insulations, much more readily when it is subject to thermal and water vapor pressure gradients.
Date
10/2021
10/2021
Author(s)
Valentina Woodcraft, G. Kim LeBlanc, Maria Spinu, and Theresa Weston
Valentina Woodcraft, G. Kim LeBlanc, Maria Spinu, and Theresa Weston
Page(s)
40-59
40-59
Keyword(s)
thermal; insulation; conductivity; water; vapor; gradients
thermal; insulation; conductivity; water; vapor; gradients