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Experimental and numerical validation of hygrothermal transfer in brick wall
Author(s) -
Chbani Idrissi Yassine,
Belarbi Rafik,
Allam Reda,
Feddaoui M'Barek,
Bennai Fares,
Agliz Driss
Publication year - 2021
Publication title -
heat transfer
Language(s) - English
Resource type - Journals
eISSN - 2688-4542
pISSN - 2688-4534
DOI - 10.1002/htj.22173
Subject(s) - moisture , materials science , relative humidity , humidity , brick , heat transfer , building envelope , envelope (radar) , mortar , computer simulation , environmental science , mechanics , composite material , structural engineering , thermal , engineering , meteorology , aerospace engineering , radar , physics
In this paper, a mathematical model dealing with a coupled heat, air, and moisture transfer in a building envelope was developed. Based on the three‐following driving potential: vapor pressure, dry air pressure, and temperature, an application on a hygrothermal behavior of a real wall was carried out for different climatic conditions. For this purpose, a characterization of the heat and moisture properties of the materials constituting the wall made with red brick and cement mortar was carried out in the laboratory. This was used to evaluate experimentally the input parameters of the model as a function of relative humidity. To validate the numerical model, an experimental platform was improved. The wall was set up in a double‐climatic chamber with different boundary conditions, and then the temperature and humidity evolutions were recorded using several sensors within the wall thickness. The results have highlighted a good agreement between numerical simulation results and experimental ones.