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Simultaneous heat and moisture transport in porous building materials: evaluation of nonisothermal moisture transport properties

Qin, Menghao; Belarbi, Rafik; Ait-Mokhtar, Abdelkarim and Nilsson, Lars Olof LU (2008) In Journal of Materials Science 43(10). p.3655-3663
Abstract
The paper presents a mathematical model for calculating the nonisothermal moisture transfer in porous building materials. The simultaneous heat and moisture transfer problem was modeled. Vapor content and temperature were chosen as principal driving potentials. The coupled equations were solved by a numerical method. An 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... (More)
The paper presents a mathematical model for calculating the nonisothermal moisture transfer in porous building materials. The simultaneous heat and moisture transfer problem was modeled. Vapor content and temperature were chosen as principal driving potentials. The coupled equations were solved by a numerical method. An 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
in
Journal of Materials Science
volume
43
issue
10
pages
3655 - 3663
publisher
Springer
external identifiers
  • wos:000254964200044
  • scopus:42149169782
ISSN
0022-2461
DOI
10.1007/s10853-008-2584-3
language
English
LU publication?
yes
id
77d3a64b-8d7e-4e4d-80a0-29ce7672d755 (old id 1206345)
date added to LUP
2008-09-19 12:41:08
date last changed
2017-10-01 03:59:40
@article{77d3a64b-8d7e-4e4d-80a0-29ce7672d755,
  abstract     = {The paper presents a mathematical model for calculating the nonisothermal moisture transfer in porous building materials. The simultaneous heat and moisture transfer problem was modeled. Vapor content and temperature were chosen as principal driving potentials. The coupled equations were solved by a numerical method. An 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         = {0022-2461},
  language     = {eng},
  number       = {10},
  pages        = {3655--3663},
  publisher    = {Springer},
  series       = {Journal of Materials Science},
  title        = {Simultaneous heat and moisture transport in porous building materials: evaluation of nonisothermal moisture transport properties},
  url          = {http://dx.doi.org/10.1007/s10853-008-2584-3},
  volume       = {43},
  year         = {2008},
}