Transient model for coupled heat, air and moisture transfer through multilayered porous media

Most building materials are porous, composed of solid matrix and pores. The time varying indoor and outdoor climatic conditions result heat, air and moisture (HAM) transfer across building enclosures. In this paper, a transient model that solves the coupled heat, air and moisture transfer through mu...

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Bibliographic Details
Published in:International journal of heat and mass transfer 2010-07, Vol.53 (15), p.3035-3044
Main Authors: Tariku, Fitsum, Kumaran, Kumar, Fazio, Paul
Format: Article
Language:English
Subjects:
Applied sciences
Building envelope
Buildings
Buildings. Public works
Exact sciences and technology
External envelopes
Hygrothermal
Moisture
Transient HAM
Wall. Partition
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Summary:Most building materials are porous, composed of solid matrix and pores. The time varying indoor and outdoor climatic conditions result heat, air and moisture (HAM) transfer across building enclosures. In this paper, a transient model that solves the coupled heat, air and moisture transfer through multilayered porous media is developed and benchmarked using internationally published analytical, numerical and experimental test cases. The good agreements obtained with the respective test cases suggest that the model can be used to assess the hygrothermal performance of building envelope components as well as to simulate the dynamic moisture absorption and release of moisture buffering materials.
ISSN:0017-9310
1879-2189
DOI:10.1016/j.ijheatmasstransfer.2010.03.024