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

Författare

Summary, in English

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.

Publiceringsår

2008

Språk

Engelska

Sidor

255-271

Publikation/Tidskrift/Serie

Transport in Porous Media

Volym

72

Issue

2

Dokumenttyp

Artikel i tidskrift

Förlag

Springer

Ämne

  • Materials Engineering

Nyckelord

  • Nonisothermal moisture transfer
  • Modeling
  • Building materials
  • Moisture transport coefficients

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0169-3913