Deep-Bed Grain Drying - A Review of Particular Theories

Comparison of two non-equilibrium models for static grain deep-bed drying by numerical simulations

“…Non-equilibrium models consist of a set of four partial differential equations and several relationships defining the initial and boundary conditions. They are considered to be exact theoretical drying models when the appropriate assumptions are valid (Cenkowski, Jayas, & Pabis, 1993). In the equilibrium and logarithmic models, restrictive assumptions are introduced to simplify the set of partial differential equations (Barre, Baughman, & Hamdy, 1971;Hukill, 1954).…”

Stationary deep-bed drying: A comparative study between a logarithmic model and a non-equilibrium model

“…Deep-bed drying models can be divided into three categories: equilibrium models, non-equilibrium models namely partial differential equation models and logarithmic models (Cenkowski, Jayas, & Pabis, 1993;Parry, 1985;Sharp, 1982).…”

“…The control volume consists of two thermodynamic systems: intergranular air and grains. Non-equilibrium models consist of four partial differential equations and several relationships defining the initial and boundary conditions (Cenkowski et al, 1993;Giner et al, 1996;Parry, 1985;Sharp, 1982;Sitompul, Istadi, & Sumardiono, 2003). They are considered as exact theoretical models for grain drying when the appropriate assumptions are valid (Cenkowski et al, 1993).…”

Heat and Mass Transfer in Packed Bed Drying of Shrinking Particles

“…A large variety of models has been developed to describe the heat and mass transfer inside deep bed dryers. Comprehensive reviews of these models and simulation methods are available in the literature (Brooker et al, 1992;Cenkowski et al, 1993).…”