Abstract
A 3D numerical solution of the heat conduction equation is proposed based on the finite volume method to describe the heating of wood, where the thermal conductivity (ThC) is variable, and the convective heat transfer coefficient is constant. ThC parameters were found through an optimization process based on genetic algorithms. The objective function between measured and simulated curves is determined, and parameters with greatest correspondence between measured and estimated values were obtained. As a result, a new equation for ThC is proposed, which depends on moisture and temperature. The proposed coefficient is validated by experiments, and a good agreement was found between experimental heating curves and those obtained by simulation by means of the new heat conduction equation.
Acknowledgments
The project was supported by the “Fundamental Research Funds for the Central Universities,” Grant No. 2572014AB21.
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©2016 by De Gruyter
Articles in the same Issue
- Frontmatter
- Original Articles
- Acid hydrolysis of O-acetyl-galactoglucomannan in a continuous tube reactor: a new approach to sugar monomer production
- Preparation and characterization of activated carbon fibers from liquefied wood by KOH activation
- Water vapour sorption of wood modified by acetylation and formalisation – analysed by a sorption kinetics model and thermodynamic considerations
- Scanning UV microspectrophotometry as a tool to study the changes of lignin in hydrothermally modified wood
- Assessing the wood quality of interior spruce (Picea glauca × P. engelmannii): variation in strength, relative density, microfibril angle, and fiber length
- Inverse determination of thermal conductivity in lumber based on genetic algorithms
- Influence of hot-water extraction on ultrastructure and distribution of glucomannans and xylans in poplar xylem as detected by gold immunolabeling
- Mode of action of brown rot decay resistance in phenol-formaldehyde-modified wood: resistance to Fenton’s reagent
- Stilbene impregnation retards brown-rot decay of Scots pine sapwood
- Negative gravitropism of Ginkgo biloba: growth stress and reaction wood formation
Articles in the same Issue
- Frontmatter
- Original Articles
- Acid hydrolysis of O-acetyl-galactoglucomannan in a continuous tube reactor: a new approach to sugar monomer production
- Preparation and characterization of activated carbon fibers from liquefied wood by KOH activation
- Water vapour sorption of wood modified by acetylation and formalisation – analysed by a sorption kinetics model and thermodynamic considerations
- Scanning UV microspectrophotometry as a tool to study the changes of lignin in hydrothermally modified wood
- Assessing the wood quality of interior spruce (Picea glauca × P. engelmannii): variation in strength, relative density, microfibril angle, and fiber length
- Inverse determination of thermal conductivity in lumber based on genetic algorithms
- Influence of hot-water extraction on ultrastructure and distribution of glucomannans and xylans in poplar xylem as detected by gold immunolabeling
- Mode of action of brown rot decay resistance in phenol-formaldehyde-modified wood: resistance to Fenton’s reagent
- Stilbene impregnation retards brown-rot decay of Scots pine sapwood
- Negative gravitropism of Ginkgo biloba: growth stress and reaction wood formation