Modeling The Hygrothermal Behavior Of Biobased Construction Materials
JOURNAL OF BUILDING PHYSICS(2014)
摘要
Materials with high moisture exchange capacity may have a strong impact on indoor climate conditions as well as building energy performance. Crop-based materials, characterized by their high porosity and hygroscopicity, belong to this category. Modeling their hygrothermal behavior accurately is thus particularly relevant for appropriate building design. A COMSOL Multiphysics transient heat air and moisture model is developed in this article to simulate moisture exchange between a lime-hemp concrete block and surrounding air during a Moisture Buffer Value evaluation test. Results are then compared with the validated heat air and moisture software using performance criteria showing a slight preference for both moisture exchanges and latent heat effect characterization. It offers yet additional advantages in terms of flexibility and transparency as well as further evolution potential.
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关键词
Heat air and moisture modeling,Moisture Buffer Value,lime-hemp concrete,hygroscopic,latent heat
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