Computation of the wood temperature conductivity above the hygroscopic range during wood freezing
Journal Title: Annals of WULS, Forestry and Wood Technology; Zeszyty naukowe SGGW - Year 2016, Vol 94, Issue
Abstract
Computation of the wood temperature conductivity above the hygroscopic range during wood freezing. An approach for the computation of the temperature conductivity a of wood above the hygroscopic range during freezing of the wood has been suggested. The approach takes into account the physics of the freezing process of both the free and the hygroscopically bound water in the wood. It reflects also the influence of the fiber saturation point of wood species on the value of their a 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 a according to the suggested approach, 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 themperature 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.
Authors and Affiliations
Nencho Deliiski, Natalia Tumbarkova, Ladislav Dzurenda, Rayko Stanev
Keywords
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Computation of the wood temperature conductivity above the hygroscopic range during wood freezing
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