METHOD FOR THE DETERMINATION OF HEAT AND MASS TRANSFER COEFFICIENTS IN THE CASE OF THROUGH-CIRCULATION DRYING OF LUCERNE*

Abstract

The present paper deals with the determination method of the drying characteristics of lucerne. The determination principle of heat and mass transfer coefficients required for modelling the through-circulation drying process of a lucerne bed, on the basis of drying experiments, the calculation method of the so-called specific phase contact surfaces will be described here, in the knowledge of the preceding notions as well as of the volumetric transport coefficients. The transport characteristics, measured according to the above-mentioned principle and further the comparison of the measured and numerically calculated results of the drying process of an experimental lucerne bed will be discussed, too.