Drying Spherical Porous Bodies

Thin‐layer air drying of soybeans and white beans

“…While excellent fits of experimental data have been obtained using the diffusion equation, it is unlikely that the assumptions made in adopting the diffusion equation are valid. Most researchers agree that the diffusivity is probably moisture dependent (Sharaf-Eldeen et al, 1979;Singh, Barre & Hamdy, 1972). Similarly the assumption of homogeneity that is normally made does not provide an accurate description of most biological materials.…”

“…The effect of temperature on drying rate is well documented in the literature (Henderson & Pabis, 1961). Most of the material properties that are relevant to drying, for example, mass diffusivity, thermal conductivity and latent heat of evaporation, are temperature dependent (Singh et al, 1972).…”