Kinetika sušenja bukovine na prostem v odvisnosti od letnih klimatskih nihanj

diplomsko delo - univerzitetni študij

Andrej Gorup (Avtor), Primož Oven (Recenzent), Željko Gorišek (Mentor)

Povzetek

Preučevali smo vpliv letnih klimatskih nihanj na postopek sušenja na prostem in možnosti povečanja sušilnih kapacitet ter prihranka energije v tehničnih postopkih sušenja ob smotrni uporabi naravnega sušenja. Postopek sušenja smo izvajali na bukovih vzorcih debeline do 38 mm in ga spremljali od začetka decembra do začetka avgusta v 8 zaporednih serijah. Vzorce smo sušili od svežega stanja do doseženega ravnovesja z okolico. Med sušenjem na prostem smo natančneje preučevali vpliv temperature in relativne zračne vlatnosti na sušilno krivuljo in hitrost sušenja v posameznih letnih časih. Ugotovili smo, da na hitrost sušenja na prostem najbolj vplivajo temperaturna nihanja. Najvišje hitrosti sušenja so bile dosežene v maju in juniju, najnižje pa v decembru in januarju. Hitrost sušenja na prostem se močno zmanjša ob nenadnih padcih temperature, ki povzročijo hitro povečanje relativne zračne vlažnosti. Med kontrolo kakovosti smo ugotovili, da so bili vzorci kakovostno posušeni in brez napak.

Ključne besede

les;bukev;naravno sušenje;kakovost;klimatski dejavniki;

Podatki

Jezik:	Slovenski jezik
Leto izida:	2010
Izvor:	Ljubljana
Tipologija:	2.11 - Diplomsko delo
Organizacija:	UL BF - Biotehniška fakulteta
Založnik:	[A. Gorup]
UDK:	630*847.1
COBISS:	1836681
Št. ogledov:	1012
Št. prenosov:	249
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
Sekundarni naslov:	Beech wood air drying kinetics in relation to seasonal climatic changes
Sekundarni povzetek:	The research studies the influence of seasonal climatic changes on the process of wood seasoning, explores the possibilities of increasing kiln drying capacity, and saving energy in technical processes of wood seasoning at a reasonable use of air drying. The process of wood seasoning was studied on 38 mm thick beech samples and monitored on 8 subsequent series from the beginning of December to the beginning of August. They were submitted to air drying in fresh state and seasoned until they reached balance with the environment. During air drying of wood the effects of temperature and relative humidity on drying curve and speed in different seasons were studied. The results show that the drying rate is most affected by changes of temperature. The highest drying rates were reached in May and June, the lowest in December and January. The drying rate decreased substantially in the event of a sudden drop of temperature, causing a sudden increase of relative humidity. Through a quality assurance process it was confirmed that the samples were seasoned well and without defects.
Sekundarne ključne besede:	wood;beech;air drying;quality;climatic factors;
Vrsta dela (COBISS):	Diplomsko delo
Komentar na gradivo:	Univ. v Ljubljani, Biotehniška fak., Oddelek za lesarstvo
Strani:	XI, 64 f., [13] f. pril.
Ključne besede (UDK):	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:	21905