NEW METHODOLOGY TO OPTIMIZE SORTING IN WOOD DRYING

One important problem in lumber drying is to maintain the lumber moisture content distribution within certain minimum and maximum values. Over-drying and under-drying are common causes for lower grade recovery and dimensional stability problems. It is known that both over-drying and under-drying can...

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Autores principales:	Elustondo,D.M, Oliveira,L, Avramidis,S
Lenguaje:	English
Publicado:	Universidad del Bío-Bío 2010
Materias:	Drying Lumber Sorting Optimization
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2010000200003
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spelling	oai:scielo:S0718-221X20100002000032010-09-01NEW METHODOLOGY TO OPTIMIZE SORTING IN WOOD DRYINGElustondo,D.MOliveira,LAvramidis,S Drying Lumber Sorting Optimization One important problem in lumber drying is to maintain the lumber moisture content distribution within certain minimum and maximum values. Over-drying and under-drying are common causes for lower grade recovery and dimensional stability problems. It is known that both over-drying and under-drying can be reduced by sorting green lumber into different moisture content groups and sorting also offers the opportunity to redesign drying schedules. In this study, a new methodology was designed and tested to optimize kiln drying of lumber by implementing green sorting coupled with modified drying schedules. The methodology was applied to optimize the drying of 114 by 114mm² hem-fir lumber sorted with an NMI capacitance type meter at a local sawmill. It was found that in comparison to unsorted lumber, sorting into three groups can reduce the drying time by 7% approximately and recover around 3/4 of the under-dried lumber. The experimental data on lumber degrade and moisture gradients measured after drying were also reported in this paper.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.12 n.2 20102010-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2010000200003en10.4067/S0718-221X2010000200003
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Drying Lumber Sorting Optimization
spellingShingle	Drying Lumber Sorting Optimization Elustondo,D.M Oliveira,L Avramidis,S NEW METHODOLOGY TO OPTIMIZE SORTING IN WOOD DRYING
description	One important problem in lumber drying is to maintain the lumber moisture content distribution within certain minimum and maximum values. Over-drying and under-drying are common causes for lower grade recovery and dimensional stability problems. It is known that both over-drying and under-drying can be reduced by sorting green lumber into different moisture content groups and sorting also offers the opportunity to redesign drying schedules. In this study, a new methodology was designed and tested to optimize kiln drying of lumber by implementing green sorting coupled with modified drying schedules. The methodology was applied to optimize the drying of 114 by 114mm² hem-fir lumber sorted with an NMI capacitance type meter at a local sawmill. It was found that in comparison to unsorted lumber, sorting into three groups can reduce the drying time by 7% approximately and recover around 3/4 of the under-dried lumber. The experimental data on lumber degrade and moisture gradients measured after drying were also reported in this paper.
author	Elustondo,D.M Oliveira,L Avramidis,S
author_facet	Elustondo,D.M Oliveira,L Avramidis,S
author_sort	Elustondo,D.M
title	NEW METHODOLOGY TO OPTIMIZE SORTING IN WOOD DRYING
title_short	NEW METHODOLOGY TO OPTIMIZE SORTING IN WOOD DRYING
title_full	NEW METHODOLOGY TO OPTIMIZE SORTING IN WOOD DRYING
title_fullStr	NEW METHODOLOGY TO OPTIMIZE SORTING IN WOOD DRYING
title_full_unstemmed	NEW METHODOLOGY TO OPTIMIZE SORTING IN WOOD DRYING
title_sort	new methodology to optimize sorting in wood drying
publisher	Universidad del Bío-Bío
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2010000200003
work_keys_str_mv	AT elustondodm newmethodologytooptimizesortinginwooddrying AT oliveiral newmethodologytooptimizesortinginwooddrying AT avramidiss newmethodologytooptimizesortinginwooddrying
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NEW METHODOLOGY TO OPTIMIZE SORTING IN WOOD DRYING

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