Analysis of moisture profiles, mass biot number and driving forces during drying of potato slabs
1998
Rovedo, C.O. | Suarez, C. | Viollaz, P.
The drying of shrinking bodies is analysed by numerically solving a drying model in order to obtain a deeper insight into the drying process, calculating moisture profiles and various forms of Biot number. Moisture profiles shows great differences when different units of concentration are used. Calculated Biot numbers do not satisfactorily explain the drying kinetic curves for solids with a high initial moisture content, because the equilibrium curve is not a straight line. Kinetics drying curves are satisfactorily analysed in terms of variation of total driving force with time, which differs markedly from the corresponding variation of the total driving force in terms of temperature, for a pure heat transfer process.
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