20.500.12556/RUL-297 Sušilne lastnosti kompresijskega lesa diplomsko delo Drying characteristics of compression wood univerzitetni študij Ugotavljali smo razlike v fizikalnih lastnostih normalnega in kompresijskega lesa smreke (Picea abies Karst.). Gostota kompresijskega lesa je bila nekoliko večja, volumenski, radialni in tangencialni skrčki pa so bili za polovico manjši kot pri normalnem lesu. Krčenje kompresijskega lesa v vzdolžni smeri je bilo kar 6x večje kot pri normalnem. Naše raziskave so potrdile znatne razlike v sušilnih lastnostih normalnega in kompresijskega lesa. Pri kompresijskem smo izmerili nekoliko manjšo prepustnost za pline v prečnih smereh in 6x manjšo prepustnost za pline v smeri vlaken. Kompresijski les se v higroskopnem območju počasnejše suši, ima pa tudi manjši difuzijski koeficient, merjen v radialni smeri. Differences in physical properties of normal and compression wood of spruce (Picea abies Karst.) were studied. The density of compression wood compared to the normal was slightly higher. The volume, radial and tangential shrinkage of compression wood with respect to the normal wood was half smaller, while shrinkage in longitudinal direction was 6x greater than that of the normal wood. Our research confirmed also a significant difference in drying characteristics of normal and compression wood. Compression wood, compared to normal secondary xylem of spruce, has slightly lower gas permeability in transverse direction, and more than 6x lower gas permeability in fiber direction. Slower drying of compression wood in hygroscopic range was also confirmed, as well as lower diffusion coefficient measured in radial direction. les kompresijski les sušenje krčenje dimenzijska stabilnost difuzivnost permeabilnost Picea abies Karst. wood compression wood drying shrinkage dimensional stability diffusivity permeability Picea abies Karst. true false false [T. Strle] Slovenski jezik Angleški jezik Diplomsko delo 2014-07-11 12:24:58 2014-07-11 12:24:58 2022-07-11 10:17:11 0000-00-00 00:00:00 2008 0 Ljubljana 0 IX, 41 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*847 1659273 dn_strle_tomo.pdf dn_strle_tomo.pdf 1 A17D7B2D87E75A4A54ACC5A712388DB0 718d3fada018f346061661889c259f7794acc05eaa052451b3457505823865b5 5c4fc4dd-a1b9-11eb-a523-00155dcfd717 20.500.12556/rul/e85993f3-3eec-449b-98bf-9c2793e9b6a2 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=132293 Biotehniška fakulteta 0 0 0