BILEY P. Reasoning of parameters and developing modes of Sycamore maple wood lumber convective drying.

Object of research - technological process of wood bonding. The objective - to study heat and mass transfer, to study options and develop modes of convective drying of sycamore lumber. Methods of investigation - techniques to study heat and mass transfer processes; techniques to study the process of drying lumber and physical properties and also determine the thermal properties of wood; methods for determining kinetic characteristics of drying wood. Scientific novelty. The equation for determining the speed of drying and distribution of moisture in sycamore maple lumber during drying is worked out. For the first time by the magnitude of drying speed and other characteristics of the process kinetics obtained The coefficients of drying, moisture conductivity and moisture returns for sycamore wood are obtained for the first time by the magnitude of drying speed and other characteristics of the process kinetics. Physical and thermal properties of sycamore maple wood are systematized and regularities of operational parameters on the kinetics of drying sycamore lumber are determined for the first time on the basis of experimental studies. Practical importance. Some physical characteristics of sycamore maple wood, which comes in the drying process, including such features as humidity and its distribution on thickness of the material, density in wet state and also conventional (basic) density and density in absolutely dry state are defined. The magnitudes of shrinkage of sycamore wood (volumetric, in the plain and radial direction relative to the fibers) are investigated as well. The parameters are justified and modes are developed for convective drying of sycamore lumber. They allow obtaining high-quality material at maximum intensity of drying process. The efficiency of the developed modes for sycamore lumber drying is confirmed in a production environment, and the main results of the study are implemented at "ENO FURNITURE LTD". The results obtained in the thesis are applied within the following disciplines: "Technology of Drying and Protection of Wood" (for Bachelor’s Degree in Woodworking Technologies), "Mass Transfer Processes of Woodworking" (for Master’s Degree in Woodworking Technologies), which are taught at Ukrainian National Forestry University. Applications Area: woodworking.