Study of kinetics and energy saving method in the process of drying candied fruits from pears

Abstract

The kinetics of the process of drying hot (80C) and cold (20C) candied pears were studied. The drying coefficient is found and an analytical dependence is derived for the drying time calculation. Experimental data of the change in the temperature of the thermal agent along with the height of the candied fruit layer was obtained. It was proven that stopping the supply of a hot thermal agent at a certain point in time, cooling the upper layers of candied fruit with a cold thermal agent, and simultaneously drying the lower layers of candied fruit will reduce the energy costs of the process by 1135.64 kJ/kgwater.