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Nonisothermal moisture transport in hygroscopic building materials: modeling for the determination of moisture transport coefficients

Qin, Menghao; Belarbi, Rafik; Ait-Mokhtar, Abdelkarim and Nilsson, Lars-Olof LU (2008) In Transport in Porous Media 72(2). p.255-271
Abstract
A mathematical model for calculating the nonisothermal moisture transfer in building materials is presented in the article. The coupled heat and moisture transfer problem was modeled. Vapor content and temperature were chosen as principal driving potentials. The coupled equations were solved by an analytical method, which consists of applying the Laplace transform technique and the Transfer Function Method. A new experimental methodology for determining the temperature gradient coefficient for building materials was also proposed. Both the moisture diffusion coefficient and the temperature gradient coefficient for building material were experimentally evaluated. Using the measured moisture transport coefficients, the temperature and vapor... (More)
A mathematical model for calculating the nonisothermal moisture transfer in building materials is presented in the article. The coupled heat and moisture transfer problem was modeled. Vapor content and temperature were chosen as principal driving potentials. The coupled equations were solved by an analytical method, which consists of applying the Laplace transform technique and the Transfer Function Method. A new experimental methodology for determining the temperature gradient coefficient for building materials was also proposed. Both the moisture diffusion coefficient and the temperature gradient coefficient for building material were experimentally evaluated. Using the measured moisture transport coefficients, the temperature and vapor content distribution inside building materials were predicted by the new model. The results were compared with experimental data. A good agreement was obtained. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Nonisothermal moisture transfer, Modeling, Building materials, Moisture transport coefficients
in
Transport in Porous Media
volume
72
issue
2
pages
255 - 271
publisher
Kluwer
external identifiers
  • scopus:39549114614
ISSN
0169-3913
DOI
10.1007/s11242-007-9148-x
language
English
LU publication?
yes
id
d40b08a9-8395-40ac-9812-c76beb430771 (old id 1536211)
date added to LUP
2010-01-27 10:17:01
date last changed
2017-08-06 03:55:57
@article{d40b08a9-8395-40ac-9812-c76beb430771,
  abstract     = {A mathematical model for calculating the nonisothermal moisture transfer in building materials is presented in the article. The coupled heat and moisture transfer problem was modeled. Vapor content and temperature were chosen as principal driving potentials. The coupled equations were solved by an analytical method, which consists of applying the Laplace transform technique and the Transfer Function Method. A new experimental methodology for determining the temperature gradient coefficient for building materials was also proposed. Both the moisture diffusion coefficient and the temperature gradient coefficient for building material were experimentally evaluated. Using the measured moisture transport coefficients, the temperature and vapor content distribution inside building materials were predicted by the new model. The results were compared with experimental data. A good agreement was obtained.},
  author       = {Qin, Menghao and Belarbi, Rafik and Ait-Mokhtar, Abdelkarim and Nilsson, Lars-Olof},
  issn         = {0169-3913},
  keyword      = {Nonisothermal moisture transfer,Modeling,Building materials,Moisture transport coefficients},
  language     = {eng},
  number       = {2},
  pages        = {255--271},
  publisher    = {Kluwer},
  series       = {Transport in Porous Media},
  title        = {Nonisothermal moisture transport in hygroscopic building materials: modeling for the determination of moisture transport coefficients},
  url          = {http://dx.doi.org/10.1007/s11242-007-9148-x},
  volume       = {72},
  year         = {2008},
}