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A method for optimi...
A method for optimizing lumber sorting before kiln-drying
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Elustondo, Diego (författare)
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- Oliveira, Luiz C De S (författare)
- FPInnovations - Forintek, Vancouver, BC
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(creator_code:org_t)
- 2009
- 2009
- Engelska.
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Ingår i: Forest Products Journal. - 0015-7473. ; 59:9, s. 45-50
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- Drying lumber can be quite challenging when uniformity and consistency are required. 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. Additionally, 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 114 mm2 hem-fir lumber sorted with an NMI capacitance type meter. It was found that in comparison to unsorted lumber, sorting into three groups reduced the drying time by approximately 7 percent and recovered around threequarters of the under-dried lumber
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