Air permeability of thermally modified hemlock wood

Yaohui Liu, S. Avramidis
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引用次数: 2

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.
热改性铁杉木的透气性
西部铁杉(Tsuga heterophylla)是不列颠哥伦比亚省(BC)的一种流行的沿海物种。它的木材具有很高的热改性潜力,这一过程可以影响许多物理特性,包括透气性。目前的研究调查了铁杉木在170°C、212°C和230°C三种温度水平下的纵向透气性,处理时间为两小时。达西定律和降水体积驱替法得到的渗透率值与处理温度呈正相关,温度达到212℃后渗透率略有下降。Duncan检验的方差分析显示,212°C和230°C的热处理显著增加了透气性,而170°C的热处理不显著。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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Les
Les
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