Numerical and experimental investigation of heat and mass transfer within bio-based material

Abstract

In this paper, the coupled heat and mass transfer within porous media has been studies. First, the studied materials have been characterized experimentally and than evaluated their thermal properties, namely thermal conductivity and specific heat in different states (dry-wet). The hygroscopic properties, namely water vapour permeability, water vapour sorption. At second time, we present and validate the mathematical model describing heat and mass transfer within bio-based materials, by the confrontation with the experimental results. The materials properties obtained from the characterisation part are used as model's input parameters. Moreover, a test facility is mounted in the laboratory in order to compare the numerical and experimental data. The founded results show a good concordance between the simulated and measured data. According to this results the mathematical model of Philip and de Vries gives a good prediction of hygrothermal behaviour of biobased material. This model will allow us to save money and time of the experimental part in the future.

Mathematical modeling and research of heat and moisture transfer processes in porous media

“…Mathematical modeling of heat and mass transfer processes during drying and storage of various products, such as raw cotton, fruit, wood, and others, was conducted in [12]- [20].…”

Active Thermal Method Applied to the In Situ Characterization of Insulating Materials in a Wall

“…The attention paid to bio-sourced materials in the construction industry has grown over the past few decades, as their use has become more widespread across the globe [14]. However, since their thermal behavior and thermal properties remain relatively unknown, considerable research has been dedicated to such materials, as reflected in the literature [15][16][17][18].…”