Estimation of green moisture content distribution in hemfir timber by stochastic simulation
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Abstract
This paper describes an improved stochastic model designed to simulate systems, such as green timbers, that cannot be analyzed as a unit but as a collection of a large number of similar components. The stochastic model provides a piecewise green moisture content frequency distribution curve by using nondestructive measurements such as of timber weight. A new, relatively simple two-parameter function was designed to describe the log-normal moisture concentration distribution above the fiber saturation point, and the parameters of this function were determined by fitting the experimental timber weights with the results of the stochastic model. The simulated green moisture content distributions showed good agreement with the experimental data for Pacific coast hemlock (hemfir) timbers, thus providing a piece of information that is indispensable for applying stochastic simulation to industrial drying of timbers.
Copyright © 2004 by Walter de Gruyter GmbH & Co. KG
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- Effect of wood acidity and catalyst on UF resin gel time
- Estimation of green moisture content distribution in hemfir timber by stochastic simulation
- Theoretical exploration of factors affecting dielectric constants of masson pine
- Shrinkage stress of wood during drying under superheated steam above 100°C
- Exploratory evaluation of oscillation drying for thick hemlock timbers
- A biopulping mechanism: Creation of acid groups on fiber
- Enzymatically polymerized phenolic compounds as wood preservatives
- Evaluation of borate formulations as wood preservatives to control subterranean termites in Australia
Articles in the same Issue
- Bioactive phenolic substances in industrially important tree species. Part 1: Knots and stemwood of different spruce species
- Oligolignans in Norway spruce and Scots pine knots and Norway spruce stemwood
- Delignification mechanism during high-boiling solvent pulping. Part 6: Changes in lignin structure analyzed by 1H-13C correlation 2-D NMR spectroscopy
- Ozonation of conventional kraft and SuperBatch residual lignins in methanol/water and water
- Relationship between dissolution of fiber materials and development of pulp strength in alkaline peroxide bleaching of mechanical pulp
- Nondestructive estimation of tracheid length from sections of radial wood strips by near infrared spectroscopy
- Heat transfer model for estimating pinene emissions from hot-pressing softwood flakeboard
- Monitoring creep-rupture in oriented strandboard using acoustic emission: Effects of moisture content
- Adhesives made from isocyanates and pyrolysis oils for wood composites
- Effect of wood acidity and catalyst on UF resin gel time
- Estimation of green moisture content distribution in hemfir timber by stochastic simulation
- Theoretical exploration of factors affecting dielectric constants of masson pine
- Shrinkage stress of wood during drying under superheated steam above 100°C
- Exploratory evaluation of oscillation drying for thick hemlock timbers
- A biopulping mechanism: Creation of acid groups on fiber
- Enzymatically polymerized phenolic compounds as wood preservatives
- Evaluation of borate formulations as wood preservatives to control subterranean termites in Australia
