Mathematical description of the wood thermal conductivity above the hygroscopic range during wood freezing / Nenčo S. Delijski ...[et al.]. -- Obr. -- Lit. - A mathematical description of the wood thermal conductivity l of wood above the hygroscopic range during freezing of wood has been suggested. The description takes into account the physics of the freezing process of both the free and the hygroscopically bound water in wood. It reflects also the influence of the fiber saturation point of wood species on the value of their l during wood freezing and the influence of the temperature on the fiber saturation point of the wood during its freezing. A software program has been prepared for the computation of l according to the suggested mathematical description, which has been input in the calculation environment of Visual Fortran Professional. With the help of the program, computations have been done for the determination of the thermal conductivity in radial direction of often used in veneer and plywood production beech and poplar wood with moisture content 0.4 kg∙kg‒1 ≤ u ≤ 1.2 kg∙kg‒1 at the temperature range between 0 oC and –60 oC during freezing of the wood. The obtained results can be used for modeling of the wood freezing process and for technological analysis of processes of thermal and hydrothermal treatment of frozen wood materials, as well as in software of systems for model based automatic control of such treatment.

In Acta Facultatis Xylologiae Zvolen : vedecký časopis Drevárskej fakulty. -- Zvolen : Technická univerzita vo Zvolene, 2015. -- ISSN 1336-3824. -- Roč. 57, č. 2 (2015), s. 27-37

I. Delijski, Nenčo S., 1945-
II. Tumbarkova, Natalia
III. Dzurenda, Ladislav, 1955-
IV. Brezin, Veselin
V. Acta Facultatis Xylologiae Zvolen : vedecký časopis Drevárskej fakulty. -- Roč. 57, č. 2 (2015), s. 27-37

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