Blar i Institutt for vareproduksjon og byggteknikk på forfatter "Gebremedhin, Alemayehu"
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A comparison of the performance of mono-Si and poly-Si photovoltaic modules operating under Kosovo climate condition
Komoni, Vjollca; Gebremedhin, Alemayehu; Ibrahimi, Njomza (Journal article; Peer reviewed, 2018)The performance analysis and evaluation of a real grid-connected photovoltaic (PV) system operating under the mild continental climate condition of Kosovo are conducted in this paper. The PV system is installed on a flat ... -
Achieving a Flexible and Sustainable Energy System: The Case of Kosovo
Ibrahimi, Njomza; Gebremedhin, Alemayehu; Sahiti, Alketa (Journal article; Peer reviewed, 2019)In today’s energy system, the diffusion of renewable-based technologies is accelerating rapidly. Development of mechanisms that support the large-scale deployment of renewables towards global warming and climate change ... -
Analyse av effektivitet og miljøpåvirkninger av energisystemet i et universitetsbygg
Abrahamsen, Fredrik Ege; Ruud, Sturla Grina; Moen, Halvor Schjøtt (Bachelor thesis, 2021)Denne bacheloroppgaven er utført for å vurdere energieffektiviteten til «Smaragd-bygget» ved NTNU Gjøvik, og miljøpåvirkningen av byggets energisystem. Bygget er bygd som passivhus, men ved installasjonen av solcellepaneler ... -
Analysis of Computer Simulation Software’s for Energy Audit in Albania
Dorri, Altin; Alcani, Majlinda; Ziu, Denada; Daci, Enxhi; Gebremedhin, Alemayehu (Peer reviewed; Journal article, 2019)Energy efficiency is one of the biggest challenges that energy sector is actually facing in Albania. Due to the design and construction of the existing building stock which is not in compliance with the laws and their ... -
An Approach for Analyzing Cyber Security Threats and Attacks: A Case Study of Digital Substations in Norway
Yildirim Yayilgan, Sule; Holik, Filip; Abomhara, Mohamed; Abraham, Doney; Gebremedhin, Alemayehu (Peer reviewed; Journal article, 2022)In this paper, we provide an approach for analyzing cyber security threats and attacks in digital substations, which is based on several steps we performed within our work on two Research Council of Norway (RCN) projects. ... -
Assessing Efficiency and Environmental Performance of a Nearly Zero-Energy University Building’s Energy System in Norway
Abrahamsen, Fredrik Ege; Ruud, Sturla Grina; Gebremedhin, Alemayehu (Peer reviewed; Journal article, 2023)Increasing awareness of climate issues in recent decades has led to new policies on buildings’ energy consumption and energy performance. The European Union (EU) directive 2010/31/EC, i.e., the energy performance of buildings ... -
Batteri som potensiell løsning til kostbar nettutbygging
Spjøtvold, Jostein; Berg, Roar; Tekseth, Espen Søbstad (Bachelor thesis, 2023)Hovedmålet med oppgaven er å analysere om batterier kan være et alternativ til utbygging i lavspentnettet. Dette er vurdert over en 50-års periode, og ser på tekniske, økonomiske og miljømessige tiltak. For å svare på ... -
Calculating energy needs for a building, through a new family of ISO standards, EN ISO 52000
Jaku, Aldona (Master thesis, 2022)Hele verden kjemper mot krisen med klimaendringer så vel som svekkelsen av fossile energikilder. Bedrifter fra hele verden kommer med strategier og innovasjoner for å senke energiforbruket eller gjøre det mer bærekraftig. ... -
A case study on solar, wind and hydro energy resource potential of Prizren region in Kosovo
Sarker, Shiplu; Pecani, Goneta; Vula, Dejon; Gebremedhin, Alemayehu (Peer reviewed; Journal article, 2020)Prizren is a city located in the south part of Kosovo with approximately 90,000 inhabitants and land area of 640 km2. The region is covered with distinct geographical features, that favor penetration and deployment of ... -
A case study on solar, wind and hydro energy resource potential of Prizren region in Kosovo
Sarker, Shiplu; Pecani, Goneta; Vula, Dejon; Gebremedhin, Alemayehu (Journal article, 2020-04-24)Prizren is a city located in the south part of Kosovo with approximately 90,000 inhabitants and land area of 640 km2. The region is covered with distinct geographical features, that favor penetration and deployment of ... -
Data-driven Machine Learning Model in District Heating System for Heat Load Prediction: A Comparison Study
Dalipi, Fisnik; Yildirim, Sule; Gebremedhin, Alemayehu (Journal article; Peer reviewed, 2016)We present our data-driven supervised machine-learning (ML) model to predict heat load for buildings in a district heating system (DHS). Even though ML has been used as an approach to heat load prediction in literature, ... -
Dimensjonering av nettilkoblet mikronett for bruk på campingplass Mikronett med fornybare energikilder for å redusere årlige kostnader
Haugen, Anders; Gilhuus, Ludvig Fagerheim; Damsgaard, Ørnulf (Bachelor thesis, 2023)Flisa camping AS er ute etter lavere og mer forutsigbare energikostnader og vil sikre seg fra fremtidige prissvingninger. Hensikten med oppgaven er å dimensjonere en nettilkoblet mikronettløsning med fornybare energikilder ... -
District Heating and Cooling Enable Efficient Energy Resource Utilisation
Henning, Dag; Gebremedhin, Alemayehu (Chapter; Peer reviewed, 2012)Economic development in transition countries, such as China and India, increase global energy use. Therefore, the demand for energy carriers grows, which should increase energy prices. Global energy supply is dominated ... -
Energi- og miljøanalyse av to bygg med forskjellige energiforsyningssystemer
Sørhusbakken, Tormod; Sadol, Nazifa (Bachelor thesis, 2021)I denne bacheloroppgaven er det gjort en energi- og miljøanalyse av to bygg med forskjellige energiforsyningssystemer. Disse to byggene er Lunner helse- og omsorgssenter og Biri omsorgssenter. Energisystemene i fokus er ... -
Energioptimalisering av datasentre gjennom utnyttelse av overskuddsvarme
Fauske, Linn Kiara Nyebak; Tømmerås, Thea Kristine Hansen (Bachelor thesis, 2024)Denne bacheloroppgaven utforsker energioptimalisering av datasentre gjennom utnyttelse av overskuddsvarme. Norge er et attraktivt land for etablering av datasentre. Regjeringens satsning som datasenternasjon fremhever ... -
Energy performance analysis of a forced circulation solar water heating system equipped with a heat pipe evacuated tube collector under the Mediterranean climate cond
Maraj, Altin; Londo, Andonaq; Gebremedhin, Alemayehu; Firat, Coskun (Peer reviewed; Journal article, 2019)This work represents the energy performance analysis during the annual time period of a forced circulation solar water heating system equipped with a heat pipe evacuated tube collector having an aperture area of 1.476 m2 ... -
Flytende solenergisystem
Skoe, Knut; Stigen, Jørgen; Østby, Jan-Ivar F. (Bachelor thesis, 2021)Denne bacheloroppgaven analyserer materialer, energiproduksjon og bærekraften til Svalin Solars flytende solenergisystemer. Svalin Solar har utviklet tre ulike solenergisystemer, henholdsvis solcellepanel (til produksjon ... -
Framed- or Frameless Photovoltaic in Snow Experiencing Climates
Aubell, Jørgen Pettersen; Gebremedhin, Alemayehu (Peer reviewed; Journal article, 2021)Correlated with the declining photovoltaic (PV) system’s prices are the increase in areas they can be proven cost-efficient. PV systems are recognized as vital renewable energy sources for the contemporary societies, ... -
Framed- or Frameless Photovoltaic, Electric Cell Systems in Snow Experiencing Climates. An Performance- and Environmental Comparison
Aubell, Jørgen P. (Master thesis, 2020)Photovoltaiske (PV) systemers synkende priser er direkte korrelert med økningen av steder de kan bevises å være kosteffektive. Selv om PV systemer er anerkjente som svært gode bærekraftige energisystemer, er tilbakebetalingstiden ... -
Integration of Waste to Bioenergy Conversion Systems: A Critical Review
Ochieng, Richard; Gebremedhin, Alemayehu; Sarker, Shiplu (Journal article; Peer reviewed, 2022)Sustainable biofuel production is the most effective way to mitigate greenhouse gas emissions associated with fossil fuels while preserving food security and land use. In addition to producing bioenergy, waste biorefineries ...