1. Načrtovanje sistema centralnega ogrevanja hiše : diplomsko deloZoran 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: 346; Prenosov: 58
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4. Accuracy of Rotational Speed and Torque Sensors for Determining the Mechanical Power of Rotating Electrical MachinesGregor 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: 529; Prenosov: 30
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5. Energy Efficiency Indicators of a Single Unit HouseIztok 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: 488; Prenosov: 34
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6. Estimation of the Solar Irradiance on Tilted Surface for Different Types of PyranometersSebastijan 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: 392; Prenosov: 34
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7. Measurement System for Testing of Electric Drives in Electric VehiclesIztok 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: 383; Prenosov: 27
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8. SWOT Analysis of Pedelecs and E-Cars in Selected Countries of the Danube RegionGregor 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: 416; Prenosov: 32
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9. Quality assessment of single-pass corner steel welded jointsZdravko 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: 399; Prenosov: 8
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10. Determination of produced and consumed electricity of a residential building using a graphical user interfaceEva 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: 278; Prenosov: 14
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