Effects of diffusion drying schedules on gas and liquid permeability in Paulownia fortunei wood

As to the importance of permeability in the preservation process of solid woods, the effects of diffusion drying schedule with three different initial moisture contents (MC) on fluid flow in the sapwood and heartwood of paulownia wood (Paulownia fortunei) were studied here. Boards with initial MCs o...

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Autores principales:	Reza Taghiyari,Hamid, Oladi,Reza, Miri Tari,Seyied Mahmoud, Habibzade,Siroos
Lenguaje:	English
Publicado:	Universidad Austral de Chile, Facultad de Ciencias Forestales 2014
Materias:	diffusion drying schedule fluid flow gas permeability kiln drying liquid permeability
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002014000100010
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spelling	oai:scielo:S0717-920020140001000102014-05-29Effects of diffusion drying schedules on gas and liquid permeability in Paulownia fortunei woodReza Taghiyari,HamidOladi,RezaMiri Tari,Seyied MahmoudHabibzade,Siroos diffusion drying schedule fluid flow gas permeability kiln drying liquid permeability As to the importance of permeability in the preservation process of solid woods, the effects of diffusion drying schedule with three different initial moisture contents (MC) on fluid flow in the sapwood and heartwood of paulownia wood (Paulownia fortunei) were studied here. Boards with initial MCs of 113 % (D-1), 75.5 % (D-2) and 53.5 % (D-3) were dried to the final moisture content of 8 ± 2 %. Results showed a significant difference in the specific gas and liquid permeability of paulownia wood dried with these different initial MCs. Although gas permeability of sapwood and heartwood specimens was significantly different, no significant difference was seen in liquid permeability between these two parts. D-2 and D-1 showed the highest specific gas and liquid permeability, respectively. It was therefore concluded that the initial MC has a significant effect on the gas and liquid permeability of paulownia boards dried under diffusion schedule with different MCs. Furthermore, the presence of tyloses plays a more important role in permeability than vessel size and frequency by forming an impermeable barrier, resulting in a significant decrease in gas and liquid permeability in paulownia wood.info:eu-repo/semantics/openAccessUniversidad Austral de Chile, Facultad de Ciencias ForestalesBosque (Valdivia) v.35 n.1 20142014-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002014000100010en10.4067/S0717-92002014000100010
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	diffusion drying schedule fluid flow gas permeability kiln drying liquid permeability
spellingShingle	diffusion drying schedule fluid flow gas permeability kiln drying liquid permeability Reza Taghiyari,Hamid Oladi,Reza Miri Tari,Seyied Mahmoud Habibzade,Siroos Effects of diffusion drying schedules on gas and liquid permeability in Paulownia fortunei wood
description	As to the importance of permeability in the preservation process of solid woods, the effects of diffusion drying schedule with three different initial moisture contents (MC) on fluid flow in the sapwood and heartwood of paulownia wood (Paulownia fortunei) were studied here. Boards with initial MCs of 113 % (D-1), 75.5 % (D-2) and 53.5 % (D-3) were dried to the final moisture content of 8 ± 2 %. Results showed a significant difference in the specific gas and liquid permeability of paulownia wood dried with these different initial MCs. Although gas permeability of sapwood and heartwood specimens was significantly different, no significant difference was seen in liquid permeability between these two parts. D-2 and D-1 showed the highest specific gas and liquid permeability, respectively. It was therefore concluded that the initial MC has a significant effect on the gas and liquid permeability of paulownia boards dried under diffusion schedule with different MCs. Furthermore, the presence of tyloses plays a more important role in permeability than vessel size and frequency by forming an impermeable barrier, resulting in a significant decrease in gas and liquid permeability in paulownia wood.
author	Reza Taghiyari,Hamid Oladi,Reza Miri Tari,Seyied Mahmoud Habibzade,Siroos
author_facet	Reza Taghiyari,Hamid Oladi,Reza Miri Tari,Seyied Mahmoud Habibzade,Siroos
author_sort	Reza Taghiyari,Hamid
title	Effects of diffusion drying schedules on gas and liquid permeability in Paulownia fortunei wood
title_short	Effects of diffusion drying schedules on gas and liquid permeability in Paulownia fortunei wood
title_full	Effects of diffusion drying schedules on gas and liquid permeability in Paulownia fortunei wood
title_fullStr	Effects of diffusion drying schedules on gas and liquid permeability in Paulownia fortunei wood
title_full_unstemmed	Effects of diffusion drying schedules on gas and liquid permeability in Paulownia fortunei wood
title_sort	effects of diffusion drying schedules on gas and liquid permeability in paulownia fortunei wood
publisher	Universidad Austral de Chile, Facultad de Ciencias Forestales
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002014000100010
work_keys_str_mv	AT rezataghiyarihamid effectsofdiffusiondryingschedulesongasandliquidpermeabilityinpaulowniafortuneiwood AT oladireza effectsofdiffusiondryingschedulesongasandliquidpermeabilityinpaulowniafortuneiwood AT miritariseyiedmahmoud effectsofdiffusiondryingschedulesongasandliquidpermeabilityinpaulowniafortuneiwood AT habibzadesiroos effectsofdiffusiondryingschedulesongasandliquidpermeabilityinpaulowniafortuneiwood
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Effects of diffusion drying schedules on gas and liquid permeability in Paulownia fortunei wood

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