Original scientific paper

https://doi.org/10.5552/drind.2014.1367

Energy Consumption of Beech Timber Drying in Oscillation Climates

Goran Milić ; University of Belgrade, Faculty of Forestry, Department of Technology, Management and Design of Furniture and Wood Products, Belgrade, Serbia
Branko Kolin ; University of Belgrade, Faculty of Forestry, Department of Technology, Management and Design of Furniture and Wood Products, Belgrade, Serbia
Nebojša Todorović ; University of Belgrade, Faculty of Forestry, Department of Technology, Management and Design of Furniture and Wood Products, Belgrade, Serbia
Željko Gorišek ; University of Ljubljana, Biotechnical faculty, Department of Wood Science and Technology, Ljubljana, Slovenia

Abstract

The influence of applying the oscillations of air parameters during conventional drying of beech timber on energy consumption is discussed in the paper. A special drying software was created to enable the input of frequency (in hours) and amplitude (in percents) of oscillations. Altogether 12 drying runs were carried out: three conventional ones and nine by using the same schedule but with oscillations of equilibrium moisture content (EMC), temperature and the combination of these two. The combinations of two amplitudes (10 % or 20 %) and two frequencies (3 or 6 hours) were applied in different test runs. The results indicated that all test runs had energy consumption proportional to drying time, with an important influence of the outside temperature. In runs with oscillations, often climate changes infl uenced to some extent the total energy consumption, especially in runs with short phases (3 hours) and high amplitudes (20 %). Despite frequent climate changes, it can be expected that the usage of oscillations would lead to the same or even lower energy consumption than in conventional beech timber drying, especially when shorter drying time is reached.

Keywords

wood drying; energy consumption: conventional drying; oscillation climates; beech timber

Hrčak ID:

132190

URI

https://hrcak.srce.hr/132190

Publication date:

7.1.2015.

Article data in other languages: croatian

Visits: 2.213 *