Air permeability of thermally modified hemlock wood
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...
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| Format: | Article |
| Language: | English |
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University of Ljubljana Press (Založba Univerze v Ljubljani)
2022-11-01
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| Series: | Les |
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| Online Access: | https://journals.uni-lj.si/les-wood/article/view/11325 |
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| _version_ | 1832086420510998528 |
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| author | Yaohui Liu Stavros Avramidis |
| author_facet | Yaohui Liu Stavros Avramidis |
| author_sort | Yaohui Liu |
| collection | DOAJ |
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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.
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| format | Article |
| id | doaj-art-2f34e798e38c4e34b418ef0b13fe6f8c |
| institution | Kabale University |
| issn | 0024-1067 2590-9932 |
| language | English |
| publishDate | 2022-11-01 |
| publisher | University of Ljubljana Press (Založba Univerze v Ljubljani) |
| record_format | Article |
| series | Les |
| spelling | doaj-art-2f34e798e38c4e34b418ef0b13fe6f8c2025-02-06T15:19:29ZengUniversity of Ljubljana Press (Založba Univerze v Ljubljani)Les0024-10672590-99322022-11-0171210.26614/les-wood.2022.v71n02a01Air permeability of thermally modified hemlock woodYaohui Liu0Stavros Avramidis1Department of Wood Science, Faculty of Forestry, University of British ColumbiaDepartment of Wood Science, Faculty of Forestry, University of British Columbia 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. https://journals.uni-lj.si/les-wood/article/view/11325woodthermal modificationwestern hemlocklongitudinal air permeabilityspecific permeabilitytemperature effect |
| spellingShingle | Yaohui Liu Stavros Avramidis Air permeability of thermally modified hemlock wood Les wood thermal modification western hemlock longitudinal air permeability specific permeability temperature effect |
| title | Air permeability of thermally modified hemlock wood |
| title_full | Air permeability of thermally modified hemlock wood |
| title_fullStr | Air permeability of thermally modified hemlock wood |
| title_full_unstemmed | Air permeability of thermally modified hemlock wood |
| title_short | Air permeability of thermally modified hemlock wood |
| title_sort | air permeability of thermally modified hemlock wood |
| topic | wood thermal modification western hemlock longitudinal air permeability specific permeability temperature effect |
| url | https://journals.uni-lj.si/les-wood/article/view/11325 |
| work_keys_str_mv | AT yaohuiliu airpermeabilityofthermallymodifiedhemlockwood AT stavrosavramidis airpermeabilityofthermallymodifiedhemlockwood |