magistrsko delo
Marko Pocajt (Author), Peter Kitak (Mentor), Jože Pihler (Co-mentor)

Abstract

Cilj magistrskega dela je izračunati vrednosti temperaturnih koeficientov (toplotne prevodnosti in koeficiente toplotne prestopnosti) za goli in polizoliran vodnik. V ta namen smo uporabili dva modela, numeričnega in realnega. Numerični model smo sestavili s pomočjo metode končnih elementov, kjer je bilo potrebno upoštevati vse temperaturne lastnosti materialov. Realni model je predstavljal goli in polizoliran vodnik, na katerega smo namestili termočlene in pri določeni obremenitvi izvedli meritev temperature. V numeričnem modelu smo pri isti obremenitvi izračunali vrednost temperature. Izračun temperaturnih koeficientov se je izvajal s pomočjo optimizacijskega algoritma diferenčne evolucije tako, da je bila dosežena čim manjša razlika temperatur med obema modeloma. Magistrsko delo ima poudarek na numeričnem modeliranju vodnika, saj smo se z dobljenimi rezultati želeli čim bolj približati realnemu modelu. Meritve temperatur so bile izvedene na Mariborskem otoku v Infrastrukturnem centru za energetske meritve (ICEM).

Keywords

polizolirani vodniki;meritev temperature;numerični model vodnika;toplotna prevodnost;toplotna prestopnost;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UM FERI - Faculty of Electrical Engineering and Computer Science
Publisher: M. Pocajt
UDC: 621.365.4(043.2)
COBISS: 19379478 Link will open in a new window
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Downloads: 178
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Other data

Secondary language: English
Secondary title: THERMAL CONDUCTIVITY AND HEAT TRANSFER COEFFICIENT CALCULATION OF CONDUCTOR BASED ON OPTIMIZATION ALGORITHM
Secondary abstract: My diploma thesis deals with calculations of temperature coefficients (thermal conductivity and heat transfer coefficient) for bare and covered conductors. For this purpose we used two models, numerical and realistic. Numerical model was made by a finite elements method, where it was needed to consider all temperature material characteristics. Realistic model represented bare and covered conductor, where thermocouples were set and when certain load temperature measurements were executed. In numerical model we calculated temperature value at the same load. Temperature coefficient calculation was executed by optimization algorithm of differential evolution, so that the lowest temperature difference among both models was reached. My diploma paper has an emphasis on numerical conductor modelling, because with our results we wanted to get as closer as possible to the realistic model. Temperature measurements were executed on Maribor Island (Mariborski otok) in Infrastructure centre of energy measurements.
Secondary keywords: covered conductors;temperature measurement;numerical conductor;thermal conductivity;heat transfer;
URN: URN:SI:UM:
Type (COBISS): Master's thesis/paper
Thesis comment: Univ. v Mariboru, Fak. za elektrotehniko, računalništvo in informatiko, Elektrotehnika
Pages: XII, 54 f.
ID: 9057637