In modern society, due to the depletion and general awareness about the ecological consequences of burning fossil fuels, it is desirable to implement alternative energy sources, such as solar energy for the use of this thermal energy. Solar drying of timber is not only an energyintensive process that is carried out by the use of solar energy, but also a process for reducing the overall timber-processing time (increasing the productivity) and improving the quality of the enduse timber, as mentioned in many studies, including [4,5].