Drvna industrija, Vol. 65 No. 4, 2014.
Izvorni znanstveni članak
https://doi.org/10.5552/drind.2014.1367
Energy Consumption of Beech Timber Drying in Oscillation Climates
Goran Milić
; Sveučilište u Beogradu, Šumarski fakultet, Odjel za tehnologiju, menadžment i dizajn namještaja i drvnih proizvoda, Beograd, Srbija
Branko Kolin
; Sveučilište u Beogradu, Šumarski fakultet, Odjel za tehnologiju, menadžment i dizajn namještaja i drvnih proizvoda, Beograd, Srbija
Nebojša Todorović
; Sveučilište u Beogradu, Šumarski fakultet, Odjel za tehnologiju, menadžment i dizajn namještaja i drvnih proizvoda, Beograd, Srbija
Željko Gorišek
; Sveučilište u Ljubljani, Biotehnički fakultet, Odjel za znanost o drvu i drvnu tehnologiju, Ljubljana, Slovenija
Sažetak
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.
Ključne riječi
wood drying; energy consumption: conventional drying; oscillation climates; beech timber
Hrčak ID:
132190
URI
Datum izdavanja:
7.1.2015.
Posjeta: 1.686 *