Yaohui Liu (Author), Stavros Avramidis (Author)

Abstract

Zahodna čuga (Tsuga heterophylla) je prevladujoča obalna vrsta v Britanski Kolumbiji (BC) z velikim potencialom za termično modifikacijo lesa, ki lahko vpliva na številne fizikalne lastnosti, vključno s plinsko permeabilnostjo. Ta študija preučuje vzdolžno plinsko permeabilnost lesa čuge, termično modificiranega pri treh temperaturah, 170 °C, 212 °C in 230 °C, ter 2-urni obdelavi. Vrednosti plinske permeabilnosti, določene iz Darcyjevega zakona z metodo izpodrivanja prostornine vode, so bile pozitivno povezane s temperaturo obdelave do 212 °C, nato pa se je permeabilnost nekoliko zmanjšala. Analiza variance (ANOVA) skupaj z Duncanovim testom mnogoterih primerjav sta pokazala, da je termična obdelava pri 212 °C in 230 °C znatno povečala plinsko permeabilnost, medtem ko so bile spremembe pri 170 °C neznačilne.

Keywords

termična modifikacija;zahodna čuga;Tsuga heterophylla;vzdolžna plinska permeabilnost;specifična permeabilnost;vpliv temperature;

Data

Language: Slovenian
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL BF - Biotechnical Faculty
UDC: 630*812.23
COBISS: 137779459 Link will open in a new window
ISSN: 0024-1067
Views: 89
Downloads: 7
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Other data

Secondary language: English
Secondary title: Plinska permeabilnost termično modificiranega lesa zahodne čuge
Secondary abstract: Western hemlock (Tsuga heterophylla) is a prevalent coastal species in British Columbia (BC). Its wood has a high potential for thermal modification, a process that can affect numerous physical properties, including air permeability. The current study investigates the longitudinal air permeability of hemlock wood modified at three temperature levels, 170 °C, 212 °C, and 230 °C, and a two-hour treatment length. Permeability values obtained using Darcy’s law and the water-falling volume displacement method were positively correlated with treatment temperature up to 212 °C, after which the permeability decreased slightly. ANOVA followed by the Duncan test revealed that thermal treatment at 212 °C and 230 °C significantly increased air permeability, whereas it was insignificant at 170 °C.
Secondary keywords: wood;thermal modification;western hemlock;longitudinal air permeability;specific permeability;
Type (COBISS): Article
Pages: str. 25-30
Volume: ǂLetn. ǂ71
Issue: ǂšt. ǂ2
Chronology: 2022
DOI: 10.26614/les-wood.2022.v71n02a01
ID: 26197471