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New methodology to optimize sorting in wood drying
FPInnovations—Forintek Division, Vancouver BC.
University of British Columbia, Department of Wood Science.
2010 (English)In: MADERAS: Ciencia y Tecnología, ISSN 0717-3644, E-ISSN 0718-221X, Vol. 12, no 2, p. 79-91Article in journal (Refereed) Published
Abstract [en]

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 underdrying 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 114mm 2 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.

Place, publisher, year, edition, pages
2010. Vol. 12, no 2, p. 79-91
Identifiers
URN: urn:nbn:se:ltu:diva-7519DOI: 10.4067/S0718-221X2010000200003Local ID: 5e9287a5-8938-40b6-aa44-7fe60dac78feOAI: oai:DiVA.org:ltu-7519DiVA, id: diva2:980409
Note
Upprättat; 2010; 20140405 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Elustondo, Diego

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