MODELING OF THE DEFROSTING PROCESS OF PRISMATIC BEECH MATERIALS

Abstract

By the first co-author earlier a 3-dimensional mathematical model has been created, solved, and verified for the transient non-linear heat conduction in frozen prismatic wood materials during their heating. Now in the model the dependence of the fiber saturation point of the separate wood species from the temperature has been incorporated. The paper presents graphically solutions of the updated model of the obtained calculated results about the temperature distribution in the volume of beech frozen materials with prismatic shape with thickness 0,4 m, width 0,4 m, length 0,8 m, initial temperature -40 оC, and moisture content 0,3 kg.kg-1 and 0,6 kg.kg-1 during their defrosting at temperature of the processing medium of 80 оC.