Boriachynskyi V. Intensification of drying oak samples

This thesis is devoted to solving actual scientific and practical task European oak (Quercus robur) and red oak (Quercus rubra) drying intensive by using oscillating schedules with maintaining the quality of drying material and reduce energy consumption. The methodology of experimental studies of the operating parameters oscillating drying of oak wood and the method of calculation of duration of drying, which takes into account the peculiarities of the kinetics of the periods of heating and cooling of the wood and the change of heat and mass transfer criteria. For the first time determined the diffusion coefficients wood of European oak and red oak which were grown in Ukraine. The results of studies of oak drying wood oscillating schedules in the laboratory have proved the possibility of obtaining high-quality products without the presence of white spots in the middle of the material. Identify indicators of residual stresses, which indicate the conformity of the material to the 1st level of drying quality. On the basis of the results of theoretical and experimental studies were proposed oscillating drying schedules of European oak and red oak samples of varying thickness, tested in industrial conditions. For the implementation of the developed schedules of drying wood, the design of a drying chamber is proposed.