Primerjava diskontinuiranega in kontinuiranega vakuumskega postopka sušenja smrekovine, bukovine in hrastovine : diplomsko delo (visokošolski strokovni študij) = Comparison of discontinuous and continuous vacuum drying process of spruce-, beech- and oakwood : graduation thesis (higher professional studies)
Jamnik, Janez
Pri diskontinuiranem in kontinuiranem vakuumskem sušenju 50 mm debele smrekovine (uz = 27 %), bukovine (uz = 35 %) in hrastovine (uz = 57 %), do končne vlažnosti 8 do 10 %, smo proučevali čas ...sušenja, porabo energije in kakovost končnega proizvoda. Pogoje sušenja smo definirali s temperaturo (za smrekovino T = 90 °C, za bukovino T = 60 °C, za hrastovino T = 50 °C) in absolutnim tlakom (P = 0,052 do 0,110 bar). Pri diskontinuiranem sušenju vseh proučevanih drevesnih vrst smo ugotovili daljše čase sušenja kot pri kontinuiranem postopku, pri smrekovini za 33 %, pri bukovini za 73 % in pri hrastovini za 115 %. Diskontinuiran postopek je bil energijsko potratnejši, pri smrekovini za 24 %, pri bukovini za 45 % in pri hrastovini za 18 %. Vlažnostni gradient ob koncu sušenja je pri diskontinuiranem postopku pri smrekovini znašal 1,5 %/cm, pri bukovini 1,7 %/cm in pri hrastovini 1,8 %/cm, primerjalno pa pri kontinuiranem postopku 1,6 %/cm, 2,2 %/cm in 2,6 %/cm. Veženja in površinske razpoke so izostale. Stopnja zaskorjenja je bila v vseh primerih zmerna (med 1 in 2 po viličnem testu). Pri vakuumskem sušenju so se glede na komorsko sušenje pokazale prednosti v času sušenja, kakovost je bila primerljiva, poraba energije pa večja.
Type of material - undergraduate thesis
; adult, serious
Publication and manufacture - Ljubljana : [J. Jamnik], 2002
Knjižnica BF za lesarstvo vsn 0000000018 IN: 020020149
Knjižnica BF za lesarstvo vsn 18 IN: 020020149
available - reading room
Shelf entry
Adding material to shelf was successful.
Adding material to shelf failed.
It was not necessary to add the material to the shelf.
Bibliographic material was successfully added on shelf.
Adding bibliographical material on shelf was not successful.
Material is already on the shelf.
Permalink
URL:
Impact factor
Access to the JCR database is permitted only to users from Slovenia. Your current IP address is not on the list of IP addresses with access permission, and authentication with the relevant AAI accout is required.
Year
Impact factor
Edition
Category
Classification
JCR
SNIP
JCR
SNIP
JCR
SNIP
JCR
SNIP
Select the library membership card:
DRS,
in which the journal is indexed
Database name
Field
Year
Links to authors' personal bibliographies
Links to information on researchers in the SICRIS system
Subject headings in COBISS General List of Subject Headings
Select pickup location
The material from the parent unit is free. If the material is delivered to the pickup location from another unit, the library may charge you for this service.
