Simulation of heat transfer in wood

During the various technological processes in the timber industry, raw materials must be treated and stored at specified temperatures. In these cases, the heat transfer inside the timber must be known, with the help of which time, energy and cost can be saved, and subsequent problems with the finished product can also be avoided. The processes of heating of poplar, spruce, beech and black locust species due to higher external temperatures were successfully modelled using the finite element method. The difference between the model and the actual temperature varies in the 0,7-3,7 degrees C range. Density significantly influences heat transfer, as the species with a lower density heated up faster throughout their cross sections. The influence of the anatomical directions was demonstrated in that the longitudinal heating of the timber was faster than the figures corresponding to the radial and tangential directions. There were practically no differences between the two transversal heat transfer.