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Laboratorijsko preizkuševališče pnevmatskega transporta prašnih delcev
Finžgar, Grega (Author), Senegačnik, Andrej (Mentor) More about this mentor... This link opens in a new window

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Abstract
V magistrskem delu so obravnavani priprava preizkuševališča in prvi izvedeni laboratorijski preizkusi z elektrostatično merilno metodo pri pnevmatskem transportu premogovega prahu. Za novo zgrajeno namensko laboratorijsko preizkuševališče je bilo potrebno ugotoviti robne pogoje obratovanja in nastavitve, ki omogočajo opazovanje pnevmatskega transporta premoga pri podobnih transportnih pogojih, kot so v realnosti v termoelektrarnah s premogovo prašno kurjavo. Izveden je pregled literature s področja elektrostatike in pnevmatskega transporta. Obravnavana je priprava vzorca premogovega prahu, od izokinetičnega zajemanja v termoelektrarni do sejanja in sušenja. Izvedeni so umerjanje vibracijskega dodajalnika premogovega prahu, ter elektrostatične meritve na vzorcih premogovega prahu. Analiza rezultatov pokaže vpliv hitrosti in velikosti delcev na napetostni nivo elektrostatičnega signala.

Language:Slovenian
Keywords:premogov prah, pnevmatski transport, prahovodni kanal, merilna negotovost, elektrostatika, izokinetično odsesavanje
Work type:Master's thesis/paper (mb22)
Tipology:2.09 - Master's Thesis
Organization:FS - Faculty of Mechanical Engineering
Year:2021
Publisher:[G. Finžgar]
Number of pages:XXII, 69 str.
UDC:621.867.8:622.411.52(043.2)
COBISS.SI-ID:57108227 This link opens in a new window
Views:63
Downloads:27
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Secondary language

Language:English
Title:Laboratory test rig for pneumatic transport of particles
Abstract:
The master's thesis deals with the preparation of the test facility and the first laboratory tests performed with the electrostatic measuring method in the pneumatic transport of coal dust. For the newly built dedicated laboratory testing facility, it was necessary to determine the operating boundary conditions and settings that allow the observation of pneumatic transport of coal under similar transport conditions as in reality in pulverized coal-fired power plants. A review of the literature in the field of electrostatics and pneumatic transport was performed. The preparation of a coal dust sample, from isokinetic capture in a thermal power plant to sowing and drying, is discussed. Calibration of the vibration feeder of coal dust was performed, as well as electrostatic measurements on coal dust samples. Analysis of the results shows the influence of velocity and particle size on the voltage level of the electrostatic signal.

Keywords:coal powder, pneumatic conveying, coal dust duct, measuring uncertainty, electrostatics, isokinetic sampling

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