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Drvna industrija : Scientific journal of wood technology, Vol.61 No.1 March 2010. -

This article explores the energy characteristics of wood-chips produced from Salix viminalis - clone ULV, which was cultivated in an energy plantation. The higher heating value of wood and bark of Salix viminalis was assessed through an experimental measurement in a special calorimeter for solid fuels, model IKA C 200. The lower heating value of wood and bark was calculated from the higher heating value Qs, taking into account hydrogen Hdaf and water contentWr in fuel samples that were assessed in a laboratory. The higher heating value and lower heating value of a dry Salix viminalis wood QSW = 19 520 kJ-kg and QnW =18 044 kJ-kg were assessed by these analyses. The higher heating value and lower heating value of a dry Salix viminalis bark were also assessed QSB = 19 389 kJ-kg, and QnB = 17 997 kJ-kg. The share of bark of 19.35%was assessed in wood-chips produced from Salix viminalis - clone ULV, in accordance with the Slovak Technical Norm STN 48 0058 for wood assortments, wood chips containing leaves, and sawdust. The lower heating value of wood chips produced from Salix viminalis - clone ULV in dry state was calculated, based on the lower heating value of salix wood, the lower heating value of salix bark, and the share of bark in wood chips as a weighted average Qn CH = 18 035 kJ-kg.

higher heating value; lower heating value; salix wood and bark; wood chips; energy plantations



Autor: Ladislav Dzurenda - ; Faculty of Wood Sciences and Technology, Technical University in Zvolen, Republic of Slovakia Jarmila Geffe

Fuente: http://hrcak.srce.hr/



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