Abstract

Тhe article presents the results of research on the mechanism of movement of moisture in wood during heating in an unsaturated environment. Dependences are obtained that reflect the nature of changes in humidity on the surface and inside the wood over time. The regularities of changes in the value of the humidity drop of samples with different parameters from the degree of saturation and temperature of the processing medium over time are determined. In this work, attention is drawn to the fact that during the heating period of wood, there is a noticeable difference in humidity on the surface and inside the sample, which is the reason for the uneven distribution of moisture over the thickness of the lumber.

In turn, the occurrence of a difference in humidity between the surface and inner layers of wood causes moisture to move in the direction from the more humid Central to the less humid surface layers. The experimental data obtained indicate that the nature of changes in the moisture content of wood during the heating period is influenced by the following variables: the heating temperature, the degree of saturation of the processing medium, the initial humidity of the sample, and the thickness of the samples.

The results of the research can be used in the development of modes of initial heating, which improve the quality of products and reduce energy consumption for this process.