Modeling the hygrothermal behavior of biobased construction materials
(2013) Journal of Building Physics — p. 1-23 (2013)
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- Abstract
- 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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Citations
Dubois, S., Evrard, A., & Lebeau, F. (2013). Modeling the hygrothermal behavior of biobased construction materials. Journal of Building Physics, 1-23. https://doi.org/10.1177/1744259113489810 (Original work published 2013)