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Kinematika toka vlaknaste strukture kamene volne v zračnem toku odpiha
Peternelj, Marko (Author), Širok, Branko (Mentor) More about this mentor... This link opens in a new window

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Abstract
Doktorsko delo obravnava nastajanje ligamentov, vlaken, tvorjenje večjih skupkov vlaken in končno formiranje primarne plasti mineralne volne. Zaradi tehničnih omejitev spremljanja procesa sta bila v okviru doktorske naloge izvedena dva laboratorijska eksperimenta na modelni centrifugi in modelni zbiralni komori. Merilni metodi pri eksperimentih sta bili vizualizacija procesa s hitro kamero ter računalniška obdelava podatkov. Študija na modelni centrifugi je bila osredotočena na formiranje vlaken iz perforiranega rotorja ter njihovo medsebojno prepletanje v večje strukture. Rezultati študije so prikazani v obliki multiregresijskih modelov. Na modelni zbiralni komori smo razvili vizualizacijsko metodo določanja površinske gostote primarne plasti z metodo presvetlitve oz. absorpcije svetlobe skozi prosojni material. Ugotovili smo povezavo med obratovalnimi parametri in površinsko gostoto primarne plasti ter njeno teksturo. Povezavo smo kvantitativno formulirali v obliki multiregresijskega modela. Metodo presvetlitve primarne plasti za določitev površinske gostote smo nato uporabili v realnem industrijskem okolju, s tem pa omogočili kvantitativno vrednotenje vpliva obratovalnih parametrov na porazdelitev in teksturo formirane primarne plasti. Spoznanja v opravljenih študijah so privedla do oblikovanja nove tehnične rešitve – zbiralne komore, ki je patentno zaščitena.

Language:Slovenian
Keywords:mineralna volna, ligamenti, vlakna, večfazni tokovi, pnevmatski transport, primarna plast, centrifuga, zbiralna komora, vizualizacija s kamero
Work type:Doctoral dissertation (mb31)
Organization:FS - Faculty of Mechanical Engineering
Year:2018
Views:607
Downloads:308
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Secondary language

Language:English
Title:Kinematics of mineral wool fibers in air flow
Abstract:
In this thesis formation of ligament and fibers, formation of larger clusters of fibers and their further accumulation and formation of so called primary layer is investigated. Due to difficult measuring techniques in real industrial environment of the process, two laboratory experimental studies were conducted on model spinner and model collecting chamber. Measuring method was performed by means of visualization with high speed camera and computer analysis of the data. Study on model spinner was focused on formation of fibers generated by perforated rotor, their intertwining and formation of typical larger structures. Results were presented in form of multiple regression models. Study on model collecting chamber was conducted to develop measuring method for determining primary layer mass distribution. The principle of this method is absorption of light through fibrous material. Relation between operation parameters and primary layer mass distribution and its texture was found. This relation was quantitatively formulated in form of multiple regression models. Developed method for measuring mass distribution of accumulated fibers was then used in real industrial plant, where it enabled quantitative evaluation of primary layer characteristics and their relation to operating parameters. Better understanding of the process led to the design of new technical solution for the collecting chamber which is patent protected.

Keywords:mineral wool, ligaments, fibers, multiphase flow, pneumatic transport, primary layer, spinner, collecting chamber, computer added visualization

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