Experimental validation of green wood peeling assisted by IR heating – some analytical system design considerations
TypeArticles dans des revues avec comité de lecture
Experimental results have been used to validate a 2D simulation model in order to check its reliability in predicting the heating of a green log rotating under an IR heating source. For the purpose of validation, it was assumed that this experimental situation could be described by simplified analytical solutions. This assumption has been confirmed. Knowing the thermal and physical characteristics of green wood, two methods are now available to calculate rapidly the temperature within the wood and the maximum surface temperature reached by a green log rotating under an IR heating source: (1) by numerical simulation and (2) by analytical equations which dispense with the computationally intensive finite element method. Experimental results, validated by both methods, show that an IR heating system embedded on an industrial peeling machine would not warm-up green wood to the required peeling temperature at current peeling speeds.
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DUPLEIX, Anna; KUSIAK, Andrzej; HUGHES, Mark; ROSSI, Frédéric (De Gruyter, 2013)The thermal properties of wood in the green state have been determined by the transient plane source (TPS) technique. Data are presented on thermal conductivity ( λ ), heat capacity ( C ), and thermal diffusivity ( κ ) at ...
The effect of log heating temperature on the peeling process and veneer quality: beech, birch, and spruce case studies DUPLEIX, Anna; DENAUD, Louis; BLÉRON, Laurent; MARCHAL, Rémy; HUGHES, Mark (Springer, 2013)Heating green-wood prior to peeling is necessary to improve both peeling process and quality of veneer. This study investigates optimum heating temperatures by soaking of beech, birch and spruce. Experiments have studied ...
PAILHES, Jérôme; PRADERE, Christophe; BATTAGLIA, Jean-Luc; TOUTAIN, Jean; KUSIAK, Andrzej; AREGBA, Aworou Waste; BATSALE, Jean-Christophe (Elsevier, 2012)A new method based on the thermal quadrupoles technique for heat transfer modelling in multilayered slabs with heat sources is proposed. Classical thermal quadrupoles use hyperbolic functions and numerical problems occur ...
DUPLEIX, Anna; DE SOUSA MENESES, Domingos; HUGHES, Mark; MARCHAL, Rémy (Springer, 2013)There is a lack of quantitative data on the penetration depth and the amount of energy absorbed by green wood under infrared (IR) radiation. This lack of knowledge is a potential barrier to the development of IR heating ...
DUPLEIX, Anna; OULD AHMEDOU, Sid' Ahmed; BLÉRON, Laurent; ROSSI, Frédéric; HUGHES, Mark (De Gruyter, 2013)Heating green wood logs by infrared (IR) radiation during peeling for veneer production has been numerically simulated, focusing on the heating kinetics of a green wood cylinder rotating with a decreasing radius. The results ...