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1.
Načrtovanje sistema centralnega ogrevanja hiše : diplomsko delo
Zoran Popović, 2023, diplomsko delo

Opis: Učinkovita raba energije je izjemno pomembna za zmanjševanje energetskih potreb v stavbah in ključna v boju proti podnebnim spremembam, pri trajnostnem razvoju ter prehodu v nizkoogljično družbo. V diplomski nalogi so predstavljene različne vrste sistemov centralnega ogrevanja, opisane so njihove značilnosti ter osnovne komponente. Praktični del diplomske naloge zajema zasnovo sodobne stanovanjske hiše in načrtovanje energetsko učinkovitega sistema centralnega ogrevanja z lesno biomaso. V praktičnem delu naloge je vsebina osredotočena na analizo energetske učinkovitosti, določitev potrebne toplote za ogrevanje ter izračun projektne toplotne moči s pomočjo programskih orodij KI Energija in Audytor 7.0 PRO. Pridobljeni rezultati izvedenih analiz bodo ključni za sam postopek načrtovanja sistema centralnega ogrevanja. Usklajenost teoretičnih konceptov in praktičnega izvajanja omogoča celovit vpogled v proces načrtovanja ter obravnavo ekonomskih in energetskih vidikov sistema centralnega ogrevanja.
Ključne besede: energetska učinkovitost, sistemi centralnega ogrevanja, načrtovanje, KI Energija, Audytor HL
Objavljeno v DKUM: 18.01.2024; Ogledov: 101; Prenosov: 11
.pdf Celotno besedilo (4,26 MB)

2.
Energetska prenova kulturne dediščine na primeru Vile Rožle : diplomsko delo
Uroš Mićić, 2023, diplomsko delo

Opis: V diplomski nalogi je predstavljena energetska prenova stavbne dediščine na primeru Vile Rožle v Velenju. Opisano je zakonsko ozadje ter osnovni pojmi na področju energetske prenove in varstva kulturne dediščine. V sklopu diplomske naloge je opravljena analiza energetske učinkovitosti stavbe pred in po prenovi. Analizirani so učinki energetske sanacije ter izdelane računske in merjene energetske izkaznice. Rezultati opravljenih analiz potrjujejo, da je bila energetska prenova smiselna in je prinesla številne pozitivne učinke.
Ključne besede: kulturna dediščina, Vila Rožle, energetska prenova, energetska izkaznica, energetska učinkovitost
Objavljeno v DKUM: 16.01.2024; Ogledov: 164; Prenosov: 12
.pdf Celotno besedilo (3,37 MB)

3.
Zamenjava obstoječega ogrevalnega sistema v industrijskem objektu z VRF sistemom : diplomsko delo
Gašper Škoflek, 2023, diplomsko delo

Opis: V diplomskem delu obravnavamo zamenjavo obstoječega ogrevalnega sistema toplotna postaja z VRF sistemom. Računsko določimo toplotne izgube stavbe in določimo potrebno velikost in moč VRF sistema. Naredimo izračun letnih stroškov starega in novega ogrevalnega sistema ter upravičimo ali ovržemo načrtovano zamenjavo.
Ključne besede: ogrevanje, hlajenje, toplotne izgube, VRF sistem
Objavljeno v DKUM: 16.01.2024; Ogledov: 72; Prenosov: 6
.pdf Celotno besedilo (2,68 MB)

4.
Accuracy of Rotational Speed and Torque Sensors for Determining the Mechanical Power of Rotating Electrical Machines
Gregor Srpčič, Iztok Brinovar, Bojan Štumberger, Sebastijan Seme, Miralem Hadžiselimović, 2019, objavljeni znanstveni prispevek na konferenci

Opis: This paper deals with determining the accuracy of measuring systems for determining the characteristics of rotating electrical machines. Efficiency classes and experimental methods for determining efficiency, are given in a standard, which has to be strictly respected. For determining the efficiency of an electrical machine, it is necessary to have a modern and accurate measurement system with sensors of high accuracy classes, which enables the user to carry out precise measurements and consequently, to determine all the characteristics of the electrical machine. This paper will be focused on torque and speed measurements.
Ključne besede: efficiency, measuring system, electric machines, torque and rotational sensors, accuracy
Objavljeno v DKUM: 04.12.2023; Ogledov: 223; Prenosov: 11
.pdf Celotno besedilo (18,06 MB)
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5.
Energy Efficiency Indicators of a Single Unit House
Iztok Brinovar, Gregor Srpčič, Zdravko Praunseis, Sebastijan Seme, Bojan Štumberger, Miralem Hadžiselimović, 2019, objavljeni znanstveni prispevek na konferenci

Opis: This article deals with the evaluation of energy efficiency indicators of an older single unit house with the use of "KI energija 2017" software, which is widely used among qualified Slovenian experts authorized to carry out the energy performance assessments and issue an energy performance certificate. The energy performance analysis before and after the implementation of proposed measures has shown significant energy saving potential in renovation of existing buildings.
Ključne besede: energy efficiency, energy indicators, energy performance, building renovation, CO2 emissions
Objavljeno v DKUM: 04.12.2023; Ogledov: 255; Prenosov: 8
.pdf Celotno besedilo (18,06 MB)
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6.
Estimation of the Solar Irradiance on Tilted Surface for Different Types of Pyranometers
Sebastijan Seme, Klemen Sredenšek, Iztok Brinovar, Gregor Srpčič, Miralem Hadžiselimović, Bojan Štumberger, 2019, objavljeni znanstveni prispevek na konferenci

Opis: Accurate measurements of solar irradiance are important in many applications such as studying the distribution of received radiation or estimating the final yield of photovoltaic systems This paper deals with evaluation of different types of pyranometers. The primary objective of this paper is to compare two types of pyranometers, with the use of mathematical model for predicting solar radiation on incline surface. The mathematical model shows that both types of pyranometers receives the highest annual average solar radiation with a surface facing 189° south and inclination angle of 44°. The results in this paper show that the deviation between silicon photodiode and thermopile pyranometer mostly occur, due to irregular calibration, frequent cleaning and errors of silicon photodiode pyranometer under overcast sky conditions.
Ključne besede: pyranometer, solar radiation, azimuth angle, inclination angle, accuracy
Objavljeno v DKUM: 04.12.2023; Ogledov: 162; Prenosov: 8
.pdf Celotno besedilo (18,06 MB)
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7.
Measurement System for Testing of Electric Drives in Electric Vehicles
Iztok Brinovar, Gregor Srpčič, Sebastijan Seme, Bojan Štumberger, Miralem Hadžiselimović, 2019, objavljeni znanstveni prispevek na konferenci

Opis: This paper deals with the implementation of a measurement system, capable of performing real-time data acquisition and control, and allows the performance analysis of electric drives used for electric vehicle propulsion. For applying the mechanical load on the shaft of the tested motor three different test bench configurations with different power and speed ranges can be used. The main objective of the measurement system is to perform routine performance tests and road simulation tests (in terms of driving cycles) of an electric drive. It provides a research environment for analysis, investigation and study of electric drives and control strategies.
Ključne besede: measurement system, test bench, electric machines, electric vehicles, permanent magnet synchronous motor
Objavljeno v DKUM: 04.12.2023; Ogledov: 195; Prenosov: 9
.pdf Celotno besedilo (18,06 MB)
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8.
SWOT Analysis of Pedelecs and E-Cars in Selected Countries of the Danube Region
Gregor Srpčič, Iztok Brinovar, Katja Hanžič, Miralem Hadžiselimović, Sebastijan Seme, 2019, objavljeni znanstveni prispevek na konferenci

Opis: This paper deals with pedelecs and e-cars in urban transport systems in selected countries of the Danube region. Within the EU project eGUTS a feasibility study focused on pedelecs and e-cars was made. Country specific information on e-mobility (pedelecs and ecars) was gathered and is briefly presented in chapter 2. In addition, a common SWOT analysis for all selected countries of the Danube region was made and is presented in the conclusion of the paper.
Ključne besede: pedelecs, e-cars, electric vehicles, SWOT analysis, Danube region
Objavljeno v DKUM: 04.12.2023; Ogledov: 233; Prenosov: 10
.pdf Celotno besedilo (18,06 MB)

9.
Quality assessment of single-pass corner steel welded joints
Zdravko Praunseis, Bojan Stergar, Iztok Brinovar, 2021, izvirni znanstveni članek

Opis: The aim of this paper is to analyse the quality assessment of single-pass corner steel welded joints. The testing revealed the most burdened welded joints, which were cut out of the workpiece and prepared for metallographic macroscopic and microscopic analysis. Thus, for all examinations of single-pass corner steel welded joints, the standard test procedures were used to determine the weldability and quality assessment of base materials and welded joints. Additionally, the effects of various welded defects of single-pass weld material on the bearing strength of corner welded joints will be analysed.
Ključne besede: welded joints, microstructure, cracks, undercut, main frame
Objavljeno v DKUM: 13.11.2023; Ogledov: 232; Prenosov: 7
.pdf Celotno besedilo (3,61 MB)
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10.
Determination of produced and consumed electricity of a residential building using a graphical user interface
Eva Simonič, Iztok Brinovar, Sebastijan Seme, Klemen Sredenšek, 2021, strokovni članek

Opis: The primary objective of this paper is to present a graphical user interface for the calculation of electricity produced by a photovoltaic system and electricity consumed by a heat pump. The produced electricity is determined by a multi-year average of measurements of the global and diffuse power density of solar radiation for several places in Slovenia, while consumed electricity is determined based on the required heat for heating a residential building and domestic water. The calculation of produced and consumed electricity is validated by measurements on a real system. The developed graphical user interface enables simple user inputs of the photovoltaic system, heat pump, and the considered residential building, and provides a comprehensive technical analysis for installing both systems at the same location.
Ključne besede: graphical user interface, photovoltaic system, heat pump, production of electricity, consumption of electricity
Objavljeno v DKUM: 13.11.2023; Ogledov: 129; Prenosov: 6
.pdf Celotno besedilo (2,75 MB)
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