Open AccessVelocity and uniformity of air circulation in conventional kilns for sawn timber
Author(s) -
Branko Kolin,
Goran Milić,
Igor Golić
Publication year - 2012
Publication title -
glasnik šumarskog fakulteta - univerzitet u beogradu/glasnik šumarskog fakulteta
Language(s) - English
Resource type - Journals
eISSN - 2217-8600
pISSN - 0353-4537
DOI - 10.2298/gsf1206129k
Subject(s) - kiln , air velocity , wood drying , environmental science , circulation (fluid dynamics) , air temperature , water content , pulp and paper industry , moisture , waste management , environmental engineering , engineering , materials science , meteorology , composite material , geography , geotechnical engineering , mechanics , physics , aerospace engineering
This paper presents the results of a research of velocity of air circulation in the conventional kiln drying of sawn timber and its influence on the uniformity of final moisture content. The data showed that the air velocity (between 0.8 - 1.2 m•s -1) is significantly lower than the one that is optimal for timber drying of coniferous species (3 - 4 m•s-1). This results in a reduction in the capacity of installations for drying, increased energy (thermal and electrical) consumption and thereby increase in the cost of drying. The correlation between the speed of air circulation and the final MC of timber due to prolonged drying was not established. Recommendations that should eliminate the identified deficiencies are also given