Temperature drop sensor for monitoring kiln drying of lumber
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Diego Miguel Elustondo
Abstract
The main objective of this study was to test a new sensor based on the temperature drop across the load (TDAL). The TDAL sensor was designed to determine the transition point between wet and dry wood without any specific information about the drying process. When additional information is available, the TDAL sensor can also be used to monitor drying rate and estimate the drying end-point. In this study, three potential applications of TDAL sensor for lumber drying were explored, namely, to monitor drying rate, to detect the transition point between wet and dry wood, and for determination of drying end-point after calibration. For the first application, it was demonstrated that the transition point between wet and dry wood coincides with the time at which the TDAL decreases with time at a constant logarithmic slope. For the second application, the TDAL sensor was calibrated with nine experimental drying runs, and the end-points determined with the calibrated TDAL sensor did not show a significant difference with the end-points determined by the in-kiln MC meter. Finally, the TDAL sensor was used to monitor drying rate during drying.
©2009 by Walter de Gruyter Berlin New York
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- Meeting
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Articles in the same Issue
- Original Papers
- Laboratory and mill scale evaluation of biopulping of Eucalyptus grandis Hill ex Maiden with Phanerochaete chrysosporium RP-78 under non-aseptic conditions
- New kinetics and mechanisms of oxygen delignification observed in a continuous stirred tank reactor
- A study of anthraquinone-fortified green liquor pretreatment of loblolly pine chips
- Reactions of aromatic structures in brightness reversion of fully-bleached eucalyptus kraft pulps
- Effect of surface sizing on the surface chemistry of paper containing eucalyptus pulp
- Kraft lignin as feedstock for chemical products: The effects of membrane filtration
- Modification of lignin with laccases for the adsorption of anionic ferulic acid studied by quartz cristall microbalance with dissipation and AFM
- Modeling xylan solubilization during autohydrolysis of sugar maple wood meal: Reaction kinetics
- Grandidentatin isomer from bark of suwon poplar (Populus alba L.×Populus glandulosa Uyeki)
- Amination of pyrogallol nucleus of condensed tannins and related polyphenols by ammonia water treatment
- On the time-temperature equivalency in green wood: Characterisation of viscoelastic properties in longitudinal direction
- Temperature drop sensor for monitoring kiln drying of lumber
- Experimental and numerical determination of the hygroscopic warping of cross-laminated solid wood panels
- A single point NMR method for an instantaneous determination of the moisture content of wood
- Air permeability in longitudinal and radial directions of compression wood of Picea abies L. and tension wood of Fagus sylvatica L.
- A simulation of void variation in wood-strand composites during consolidation
- Sterols and lignin in Eucalyptus globulus Labill. wood: Spatial distribution and fungal removal as revealed by microscopy and chemical analyses
- Protection mechanisms of DMDHEU treated wood against white and brown rot fungi
- Meeting
- Meetings
