Some aspects of western hemlock air permeability
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| Format: | Artículo científico |
| Langue: | en |
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Universidad del Bío Bío
2008
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| _version_ | 1876444903836221440 |
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| author | Prasad Rayirath |
| author_facet | Prasad Rayirath |
| contents | Some aspects of western hemlock air permeability Prasad Rayirath Stavros Avramidis Agrociencias sapwood density heartwood Permeability western hemlock Knowledge of the variability of fl uid permeability of wood in general and of western hemlock in particular is of significant importance to the primary and secondary wood products processing industry of coastal British Columbia. For the purpose of this study, ten hemlock trees were randomly selected and specimens were prepared from three tree heights from each tree, namely, 1, 4 and 7 m. The air permeability of sapwood and heartwood in the longitudinal direction was measured using a dynamic method. Tracheid lengths were also obtained with a fiber quality analyzer and densities were measured by water displacement. The effect of tree height, tracheid length and density on the specific permeability of gross wood was then evaluated. The data revealed that height within the range measured has no effect on longitudinal permeability on heartwood whereas in sapwood the longitudinal permeability increases above 4 m of tree height. It was also found that longitudinal permeability was not significantly influenced by the tracheid length and wood density. 2008 artículo científico 0717-3644 https://www.redalyc.org/articulo.oa?id=48510302 en http://www.redalyc.org/revista.oa?id=485 Maderas. Ciencia y Tecnología application/pdf Universidad del Bío Bío Maderas. Ciencia y Tecnología (Chile) Num.3 Vol.10 |
| format | Artículo científico |
| id | redalyc_48510302 |
| institution | Redalyc |
| language | en |
| publishDate | 2008 |
| publisher | Universidad del Bío Bío |
| spellingShingle | Some aspects of western hemlock air permeability Prasad Rayirath Agrociencias sapwood density heartwood Permeability western hemlock Some aspects of western hemlock air permeability Prasad Rayirath Stavros Avramidis Agrociencias sapwood density heartwood Permeability western hemlock Knowledge of the variability of fl uid permeability of wood in general and of western hemlock in particular is of significant importance to the primary and secondary wood products processing industry of coastal British Columbia. For the purpose of this study, ten hemlock trees were randomly selected and specimens were prepared from three tree heights from each tree, namely, 1, 4 and 7 m. The air permeability of sapwood and heartwood in the longitudinal direction was measured using a dynamic method. Tracheid lengths were also obtained with a fiber quality analyzer and densities were measured by water displacement. The effect of tree height, tracheid length and density on the specific permeability of gross wood was then evaluated. The data revealed that height within the range measured has no effect on longitudinal permeability on heartwood whereas in sapwood the longitudinal permeability increases above 4 m of tree height. It was also found that longitudinal permeability was not significantly influenced by the tracheid length and wood density. 2008 artículo científico 0717-3644 https://www.redalyc.org/articulo.oa?id=48510302 en http://www.redalyc.org/revista.oa?id=485 Maderas. Ciencia y Tecnología application/pdf Universidad del Bío Bío Maderas. Ciencia y Tecnología (Chile) Num.3 Vol.10 |
| title | Some aspects of western hemlock air permeability |
| topic | Agrociencias sapwood density heartwood Permeability western hemlock |
| url | https://www.redalyc.org/articulo.oa?id=48510302 |