We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Analysis of Non-Equilibrium and Equilibrium Models of Heat and Moisture Transfer in a Wet Porous Building Material †.
- Authors
Seredyński, Mirosław; Wasik, Michał; Łapka, Piotr; Furmański, Piotr; Cieślikiewicz, Łukasz; Pietrak, Karol; Kubiś, Michał; Wiśniewski, Tomasz S.; Jaworski, Maciej
- Abstract
In the proposed paper, non-equilibrium and equilibrium models of heat and moisture transfer through wet building materials are presented and compared. In the former, the mass transfer between liquid and gaseous moisture results from the difference between the partial pressure of water vapor and its saturation value. In the second model, the equilibrium between both phases is assumed. In the non-equilibrium model, liquid moisture can be in the continuous (funicular) or discontinuous (pendular) form. The transfer of moisture for each proposed model is tightly coupled with the energy transfer, which is assumed to be an equilibrium process. The time step and grid size sensitivity analysis of both numerical models are performed primarily. The verification of the model is based also on the numerical data available in literature. Finally, obtained with considered models, temporal variations of moisture content in three locations in the computational domain are compared. Reasonable conformity of results is reported, and discrepancies related to differences in formulations of models are discussed.
- Subjects
CONSTRUCTION materials; POROUS materials; HYGROTHERMOELASTICITY; SATURATION vapor pressure; HEAT transfer; MASS transfer; PARTIAL pressure
- Publication
Energies (19961073), 2020, Vol 13, Issue 1, p214
- ISSN
1996-1073
- Publication type
Article
- DOI
10.3390/en13010214