NDLI: Emissions of volatile organic compounds from convection dried Norway spruce timber

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Emissions of volatile organic compounds from convection dried Norway spruce timber

Content Provider	Semantic Scholar
Author	Steckel, Vera Welling, Johannes T. Ohlmeyer, Martin
Copyright Year	2010
Abstract	Building products and furnishing are, among others, sources that emit volatile organic compounds (VOCs). The Construction Products Directive of the European Union (CPD) establishes requirements for building products, including demands regarding emission properties. Also harmonised standardisation related to the CPD is under way, implying that VOC emissions will be a relevant property of building products in the future. Objective of this study was to look into the effect of the drying schedule on VOC emissions from convection dried Norway spruce timber. Four different drying schedules, mainly varying in temperature, were employed. Samples dried at high temperature emitted noticeably less VOCs compared to samples dried at low temperature. With less varying temperatures, no clear effects were observed. Further, the amount of moisture lost during drying seems to affect product emissions. The composition of compounds was not influenced by the drying schedule and no harmful compounds could be detected. Emissions did not exceed concentrations of 300 µg m -3 . In contrast, preliminary tests on other Norway spruce samples showed emissions up to one order of magnitude higher, due to stress-induced high extractives content of the wood. This example illustrates that spruce wood, being a natural material, may vary considerably regarding its emissions.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://timberdry.net/downloads/EDG-Workshop-Edinburgh/Edinburgh-Presentation/15.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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