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norskMastergradsoppgaver i teknologi - energi, klima og miljø: Recent submissions
Now showing items 41-60 of 139
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Wind at Northern Senja: Use of numerical weather prediction models for wind resource assessment
(Master thesis; Mastergradsoppgave, 2020-12-15)Wind resource assessment for establishing decentralized power production in remote and complex areas, is challenging due to a lack of observational data. To overcome this problem, Numerical Weather Prediction (NWP) models can be used to provide data where no observations exist. This thesis uses NWP models to do a wind resource assessment at northern Senja. The power grid in the area is prone to ... -
Klimanøytral miljøpark – en vurdering av kostnader og nytteverdi for klimagassreduserende tiltak
(Master thesis; Mastergradsoppgave, 2020-12-14)Remiks AS har gjennom flere år gjort en kartlegging av klimagassutslipp knyttet til egen virksomhet. På bakgrunn av dette er det iverksatt flere tiltak på aktuelle områder som har blitt identifisert. Det er i midlertidig ikke sikkert at investeringene som er gjort er de mest effektive tiltakene om man vurderer kostnadene mot klimanytten. Denne studien vil vurdere tiltakene solenergi, biodrivstoff, ... -
Performance and Future Potential of Solar Photovoltaics in Arctic Settlements
(Master thesis; Mastergradsoppgave, 2020-12-15)Data from a solar photovoltaic (PV) installation on Svalbard Airport Longyear has been analyzed to investigate performance of solar photovoltaics in the Arctic. Results show that the average capacity factor at the facility is 5.6 % after its first two full years of production. While the production in the winter is zero, monthly capacity factors are observed to be as high as 16 % in the summer. On ... -
Pumped Hydropower Conversion and Renewable Hybrid Power Plants at Senja
(Master thesis; Mastergradsoppgave, 2020-09-30)With an increasing demand for power on a global scale, and an increasing interest in renewable energy sources, both solar and wind power is growing fast. Their efficiency is increasing while the prices are decreasing, and the forecasts for these technologies shows a promising future. Along with these intermittent energy sources, storage solutions are also continuously developing, whereas pumped ... -
Two-axis tracking solar irradiance measurements at Tromsø
(Master thesis; Mastergradsoppgave, 2020-06-29)The world is changing towards using more renewable, rather than fossil energy sources in order to reach the 1.5 degrees celsius goal of the Paris agreement (Merchant, 2018). This thesis’ main focus is to investigate the solar irradiance in Tromsø using 2-axis tracking measurements from May 2020. The reduction of global irradiance and direct irradiance is also compared against the values of the other ... -
Investigating the viability of lithium-ion battery - fuel cell hybrid systems - A case study for Greenland and Qatar
(Master thesis; Mastergradsoppgave, 2020-06-22)Renewable means of energy production have recently become cost competitive with fossil fuels. However, before they can be completely phased out, the issue of storing renewable energy must be addressed. Two energy storage technologies that have gotten a lot of attention over the past years are lithium ion batteries and hydrogen energy storage. Each of these technologies have their advantages, ... -
Assessment of the Remaining Carbon Budget: Incorporating Arctic Amplification in a Simple Response Model
(Master thesis; Mastergradsoppgave, 2020-06-15)Remaining carbon budgets (RCBs) quantify the total amount of CO2 that can still be emitted into the atmosphere while keeping the global mean surface temperature below a specific target. However, there is significant uncertainty in RCBs estimates. This thesis develops a Simple Response Model (SRM) to explore the uncertainties in RCBs. We use temperature response functions estimated from multi-box ... -
Assessment of the Remaining Carbon Budget: Incorporation of Nonlinear Feedbacks in a Simple Response Model
(Master thesis; Mastergradsoppgave, 2020-06-15)Anthropogenic emission of greenhouse gases is causing an unbalance in the Earth’s climate system, leading to global climate change. The implications of these changes are dramatic, with a need for a global-scale assessment. The remaining carbon budget (RCB) is a measure of the amount of greenhouse gasses (GHGs) that can be emitted if we are to reach a specific temperature target. Traditionally, carbon ... -
Evaluation of a Solar Power Plant at Longyearbyen
(Master thesis; Mastergradsoppgave, 2020-06-15)The world faces one of the greatest challenges by changing the economy in a direction where higher resource productivity and lower greenhouse gas emis- sions are the main focus. The most prominent solution to reduce green house gases is a greater utilisation of renewable energy sources. With a rapid tech- nological advancement, solar energy is now one of the least expensive forms of power in two ... -
Assessment of the Remaining Carbon Budget: A Comparison of a Simple Response Model and the MAGICC Model.
(Master thesis; Mastergradsoppgave, 2020-06-15)We are changing the global climate by altering the Earths energy balance through the emission of greenhouse gasses. The international community aims to prevent dangerous warming with mitigative efforts. A remaining carbon budget (RCB) can roughly quantify an allowable amount of emissions for keeping the temperature below a set target. We have built a simple climate model using impulse response ... -
Automatic validation of Sentinel-1 borne snow avalanche detections
(Master thesis; Mastergradsoppgave, 2020-05-30)Snow avalanches threaten human lives, settlements and roads in snow covered mountainous areas. For avalanche forecasting, knowledge of the spatio-temporal occurrence of avalanche activity is critical. Automatic avalanche detection algorithms have been developed to enable consistent avalanche activity monitoring for large regions. The Satskred avalanche detection algorithm developed by NORCE applies ... -
Analyse av energibruk og teknisk drift ved Bryne videregående skole
(Master thesis; Mastergradsoppgave, 2019-12-15)Tidligere Bryne videregående skole (vgs.) og Time vgs. ble i 2015 slått sammen til nye Bryne vgs. I den anledning ble det bygget tre nye skolebygg med et moderne og komplekst energisystem. Skolen er et pilotprosjekt i tråd med Rogaland fylkeskommune sin miljøpolitikk og er bygget med fokus på bærekraftige prinsipper, lavt energiforbruk og bruk av energikilder med begrenset CO2 utslipp. Skolens varme ... -
Wind resource assessment using weather research and forecasting model. A case study of the wind resources at Havøygavlen wind farm
(Master thesis; Mastergradsoppgave, 2019-12-13)The need for energy increases globally due to rapid expansion of population and prosperity. To meet this demand while decreasing carbon emission and eventually transition out fossil fuel, efficient utilization of wind power is prominent. This study evaluates the performance of the Weather Research and Forecast model (WRF) with respect to wind speed and wind direction. The area of the study is ... -
Short-term wind power prediction models in complex terrain based on statistical time series analysis
(Master thesis; Mastergradsoppgave, 2019-12-13)One of the largest challenges with the utilization of wind as a renewable resource, is its natural variability and intermittent nature. To achieve a sustainable integration of wind power into the power grid, a precise and reliable prediction method is therefore required. In this study, several short-term wind power prediction models based on statistical time series analysis were developed and tested, ... -
Decentralized wind power as part of the relief for an overstrained grid. A case study on Northern Senja, Norway
(Master thesis; Mastergradsoppgave, 2019-08-12)The most significant factor in wind turbine siting is the wind conditions. Those often determine the economic and ecologic success of a project. Especially in topographically complex areas micro siting can be difficult and costly. Small and medium scale projects often lack the knowledge and resources for an extended in situ assessment. A combination of modelled wind data and the use of a geographic ... -
Estimation of power supply by renewable energy sources to a weather station at Nordlysobservatoriet, Alta
(Master thesis; Mastergradsoppgave, 2019-08-05)For a weather station that will be set up at Halddetoppen, Alta, there will also be installed a hybrid renewable energy system, to supply the station with power. This thesis simulated and estimated the hybrid system as it was planned, to see if it would be enough to give steady supply for the weather station. Different set-ups for the hybrid system was investigated. The set-ups differed in mounting ... -
Investigation of Photovoltaic Energy Yield on Tromsøya by Mapping Solar Potential in ArcGIS
(Master thesis; Mastergradsoppgave, 2019-06-13)To contribute to the reduction of greenhouse gas emissions, energy production from renewable energy resources should be markedly increased to supply the rising global energy demand (Marchant, 2018). This thesis investigates the solar energy potential in Tromsø which is used as a basis for estimating total energy yield from photovoltaic (PV) systems on rooftops. The energy yield is compared against ... -
Isdynamikk i tre mindre fjord-trausystemer langs Finnmarkskysten
(Master thesis; Mastergradsoppgave, 2019-07-01)Multistråle batymetriske data og seismiske profiler fra den vestlige kysten av Finnmark er analysert med formålet om å rekonstruere dynamikken til det Fennoskandiske Isdekket gjennom siste glasiale maksimum, og påfølgende deglasiasjon. Fokuset har vært på tre prograderende kiler i forlengelsen av de glasiale trauene Rolvsøy-, Hjelmsøy- og Måsøytrauet. En seismisk stratigrafi er definert med tre ... -
Distributed Renewable Generation and Power Flow Control to Improve Power Quality at Northern Senja, Norway
(Master thesis; Mastergradsoppgave, 2019-06-01)Distributed renewable generation and power flow control are promising tech- nologies for increasing power system efficiency. Renewable energy production close to consumption reduces need for transport of power to these locations. The benefits of reactive flow control are well documented, and in recent years the use of energy storage for active power control has increased in relevance. The power ... -
Role of hafnium doping concentration on the structural and surface properties of ZnO surfaces
(Master thesis; Mastergradsoppgave, 2019-05-31)The presented thesis deals with the characterisation of hafnium doped zinc oxides with focus on the application as transparent conducting film (TCF) or electron transport layer (ETL) in heterojunction solar cells. Atomic force microscopy (AFM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), electrical and optical methods have been applied to characterise the examined ...
