A model of heat and moisture transfer in a building material during drying based on phase equilibrium in the moist region

Piotr Furmański , Mirosław Seredyński , Piotr Łapka , Łukasz Cieślikiewicz , Michał Wasik , Michał Kubiś , Karol Pietrak , Tomasz Wiśniewski

Abstract

building materials. Drying of the building materials is mainly associated with the removal of the liquid water with the subsequent injection of the agent forming a hydrophobic barrier. In the paper a mathematical model describing the drying process of a building material was presented. The model accounts for accumulation and transfer of heat and moisture. The transfer processes include both diffusion and convection with the accompanying phase transformations of different forms of moisture. The preliminary numerical simulations using the in-house code based on the model were performed for the 1D domain containing a moist brick and a comparison of the results obtained with the proposed model with another presented in literature was carried out. The good agreement between the both models was found. Subsequently the influence of the orientation of the domain in respect to direction of gravity as well as the convective heat and mass transfer coefficients on the drying process was investigated.
Author Piotr Furmański (FPAE / IHE)
Piotr Furmański,,
- The Institute of Heat Engineering
, Mirosław Seredyński (FPAE / IHE)
Mirosław Seredyński,,
- The Institute of Heat Engineering
, Piotr Łapka (FPAE / IHE)
Piotr Łapka,,
- The Institute of Heat Engineering
, Łukasz Cieślikiewicz (FPAE / IHE)
Łukasz Cieślikiewicz,,
- The Institute of Heat Engineering
, Michał Wasik (FPAE / IHE)
Michał Wasik,,
- The Institute of Heat Engineering
, Michał Kubiś (FPAE / IHE)
Michał Kubiś,,
- The Institute of Heat Engineering
, Karol Pietrak (FPAE / IHE)
Karol Pietrak,,
- The Institute of Heat Engineering
, Tomasz Wiśniewski (FPAE / IHE)
Tomasz Wiśniewski,,
- The Institute of Heat Engineering
Pages663-673
Publication size in sheets0.5
Book Stanek Wojciech, Czarnowska Lucyna, Kostowski, Wojciech, Gładysz Paweł (eds.): Proceedings of the 5th International Conference Contemporary Problems of Thermal Engineering. Energy Systems in the Near Future: Energy, Exergy and Economics, 2018, Institute of Thermal Technology, ISBN 978-83-61506-46-1, 1579 p.
Keywords in Polishdrying of building materials, heat and moisture transfer, mathematical and numerical models
Languageen angielski
Score (nominal)0
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