1201 KB30 KB199920252016Bizjan, BenjaminPeternelj, MarkoŠirok, Braneletnik:62številka:nr. 3str. 179-186ISSN:0039-2480COBISSID_HOST:14547483URN:URN:NBN:SI:doc-OB9BM9L0enZveza strojnih inženirjev in tehnikov Slovenije etc.Strojniški vestnikcentrifugamineralna volnapnevmatski transportprimarna plastvlaknazbiralna komoraMineral wool primary layer formation in collecting chamber|The process of the mineral wool primary layer formation was investigated experimentally on a model spinning machine with sucrose as a working medium. The fibers were pneumatically transported from the spinner rotor to the accumulation grid with the aid of the blow-away and the suction airflow. The fiber primary layer formed on the accumulation grid was visualized by a camera for several different operating regimes. Acquired images were post-processed to determine the light absorption in the primary layer, which was then used to calculate the bulk density and the surface density of the layer. Based on the measured process quantities, we were able to form multiple regression models with a relatively good correlation to the experimental data. The models as well as the qualitative image analysis show a significant effect of spinner rotor rotational speed, pneumatic transport velocity and fiber deposit mass on primary layer bulk density and spatial distribution of fibersV proizvodnem procesu mineralne (steklene, kamene) volne je faza tvorbe primarne plasti vlaken izrednega pomena za lastnosti in kakovost končnih proizvodov. Preučevani pojav zajema pnevmatski transport vlaken od koles centrifuge, kjer se je mineralna talina razvlaknila, do rešetke usedalne komore, kjer se kosmi vlaken združujejo v primarno plast mineralne volne. Pojav je zelo kompleksen, saj gre za dvofazni tok zrak-vlakna, za katerega so značilne zapletene prostorske strukture medsebojno prepletenih vlaken, ki so v interakciji s turbulentnim tokom odpiha. Zaradi kompleksnosti procesa in težavnih pogojev za opazovanje je ravno tvorba primarne plasti najslabše raziskan sklop v proizvodni verigi mineralne volneTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Ljubljani, Fakulteta za strojništvo