Vpliv temperature sušenja na zaskorjenje in kakovost osušene bukovine

diplomsko delo - visokošolski strokovni študij

Tilen Jelovčan (Author), Dominika Gornik Bučar (Reviewer), Željko Gorišek (Mentor)

Abstract

Dolgotrajni postopek sušenja lesa skušamo skrajšati s povečano ostrino in temperaturo sušenja, hkrati pa želimo ohraniti zadovoljivo kakovost osušenega lesa. Primerjali smo vpliv ostrejših in milejših pogojev sušenja na hitrost in kakovost sušenja bukovine. Oba postopka smo primerjali z intervalnim odvzemanjem vzorcev. Merili smo povprečno vlažnost, vlažnostni gradient, zaskorjenje in ugotavljali mehanske lastnosti lesa v sredinskih in površinskih slojih. Hitrost sušenja je bila pri ostrejših pogojih sušenja večja, posledično je bil čas sušenja krajši. Vlažnostni gradient je bil pri blažjem sušenju manjši in je izkazoval tudi manjše zaskorjenje. Mehanske lastnosti so bile pri sušenju z blažjim postopkom boljše kot pa pri sušenju z ostrejšim.

Keywords

les;sušenje;čas sušenja;kakovost;mehanske lastnosti;

Data

Language:	Slovenian
Year of publishing:	2012
Source:	Ljubljana
Typology:	2.11 - Undergraduate Thesis
Organization:	UL BF - Biotechnical Faculty
Publisher:	[T. Jelovčan]
UDC:	630*847
COBISS:	2009737
Views:	871
Downloads:	221
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Influence of temperature and drying potential on casehardening and drying quality of beech wood
Secondary abstract:	Wood drying is a long time process, which we try to shorten by increasing of drying potential and drying temperature, while maintaining a satisfactory quality of dried wood. We compared the effects of harsh and mild drying conditions on drying rate and quality of beech wood. Both procedures were compared by intermittent removal of samples. We measured the average moisture content, moisture gradient and casehardening, and we tested the mechanical properties of wood in the middle and surface layers. The drying rate was higher in harsh drying conditions, so the drying time was shorter. Moisture content gradient was lower in mild drying process and showed smaller casehardening. Mechanical properties were better in mild drying condition than in harsh drying condition.
Secondary keywords:	wood;drying;drying time;quality;mechanical properties;
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. v Ljubljani, Biotehniška fak., Oddelek za lesarstvo
Pages:	VIII, 42 f.
Keywords (UDC):	applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;agriculture and related sciences and techniques;forestry;farming;wildlife exploitation;kmetijstvo ter sorodne vede in tehnologije;forestry;gozdarstvo;forest products and their utilization;gozdni proizvodi in njihova uporaba;
ID:	22093