20.500.12556/RUL-117609 Vpliv oscilacije klime na kinetiko in kakovost sušenja smrekovine diplomski projekt Influence of oscillation climate on cinetics and drying quality of spruce wood Kinetiko in kakovost sušenja smrekovine (Picea abies (L) Karst.) smo raziskovali pri 3 različnih pogojih sušenja; s standardnim postopkom z blago, ostro in oscilacijsko klimo. Uporabili smo stranske deske debeline 25 mm in jih osušili na končno vlažnost 11 %. Pri vseh postopkih smo z intervalnim odvzemom merili: povprečno vlažnost, vlažnostni gradient in zaskorjenje. Končna vlažnost osušenega lesa je bila pri vseh 3 eksperimentih podobna z zanemarljivim odstopanjem. Najvišji vlažnostni gradient smo izmerili pri standardnem programu z ostro klimo, sledil je standardni program z oscilacijsko klimo, najmanjši pa je nastal pri programu z blago klimo. Pri sušenju v oscilacijskih in ostrih klimatskih pogojih se je pojavila zaskorjenost. Stopnja zaskorjenosti pri ostri klimi je bila višja kot pri oscilacijski. Delovne hipoteze, da oscilacija klime omogoča kakovostnejše sušenje, nismo v celoti potrdili. Drying kinetics and drying quality of spruce wood (Picea abies (L.) Karst.) were investigated at 3 different drying conditions. Drying was performed using a standard procedure with mild, sharp and with oscillatory drying climatic conditions. 25 mm thick side boards were dried till they reached final moisture of 11 %. All procedures were compared by intermittent removal of samples and by measuring the following properties of wood: average moisture content, moisture gradient and casehardening. The final value of the dried wood moisture in all 3 experiments was the same with negligible variations. The maximum moisture content gradient was gained using a drying procedure with the sharp climate, medium by oscillatory climate, and the lowest in the standard program with a mild climate. The casehardening occurred when dried in oscillating and sharp climatic conditions. Rate of casehardening in sharp climate was higher than in the oscillatory climate. The working hypothesis that the oscillating climate enables better drying was not completely confirmed. les smrekovina sušenje kinetika oscilacija wood spruce drying kinetics oscillation true false false [M. Mavsar] Slovenski jezik Angleški jezik Delo diplomskega projekta/projektno delo 2020-07-17 13:01:38 2020-07-17 13:01:41 2022-08-29 03:44:28 0000-00-00 00:00:00 2013 0 Ljubljana 2013 Ljubljana IX, 35 f., [5] f. pril. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*847.2 2144393 DIP_Mavsar_Matic_2013.pdf DIP_Mavsar_Matic_2013.pdf 1 6BFA7ED16375DCC3874228EDD05AA7EC b484d09488b32702a2e14af091a8621016e172ae5f9743ba8c30d853abc49c5a 3857ef8a-a1b9-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=131489 Biotehniška fakulteta 0 0 0