Open Access Journal

Manuscript submission

Volume 66 (2015), issue 2
Title:

Computation of Temperature Conductivity of Frozen Wood during its defrosting

Research subject and fields:
Abstract:

An approach for the computation of the temperature conductivity of frozen wood during its defrosting has been suggested. The approach takes into account the physics of the processes of melting of both the frozen bound and free water in the wood in respective temperature ranges. It reflects for the first time also the influence of the fiber saturation point and of the volume shrinkage of each wood species on its temperature conductivity coefficient in frozen state. In the present paper, the suggested approach for the computation of the temperature conductivity of poplar, spruce, beech, oak, walnut and acacia in the temperature range between −60 °C and −1 °C is used. It is determined that the temperature conductivity of wood, during melting of frozen bound water in it, is up to some tens of times larger than the temperature conductivity of wood during melting of frozen free water in it. The obtained results can be used both for technological and other engineering calculations and analysis of processes of thermal and hydrothermal treatment of wood materials, as well as in software of systems for model based automatic control of such treatment.

Publisher

Faculty of Forestry and Wood Technology
HRCAK
ORCID
DOI
CROSSREF

DRVNA INDUSTRIJA Scientific Journal of Wood Technology

ISSN 0012-6772 (Print) / ISSN 1847-1153 (Online)

Faculty of Forestry and Wood Technology University of Zagreb, Svetošimunska 25, 10000 Zagreb, Hrvatska - Croatia
Tel: +3851 2352 430, E-mail: drind@sumfak.hr
Editor-in-Chief: Prof. Ružica Beljo-Lučić, Ph.D. E-mail: editordi@sumfak.hr