Search results for "542"
showing 10 items of 58 documents
Effekten av å døgnregulere Eidselva
2018
Masteroppgave industriell økonomi og teknologiledelse IND590 - Universitetet i Agder 2018 I denne casestudien er lønnsemda og gjennomføringsevna av å døgnregulere Eidselva vurdert. Initiativtakar til problemstillinga er Statkraft, som er eigar av det øvste kraftverket i Eidselva, Hogga kraftverk. Nedstraums Hogga ligger Vrangfoss, Eidsfoss og Ulefoss kraftverk, desse har andre eigarar som får kraftinntektene. Statkraft ynskjer å adressere moglegheitene for og effekten av at kraftverka går frå dagens produksjonsmaksimering til profittmaksimering. Der sistnemnde er optimalisert produksjon i samråd med kraftprisen, altså døgnregulering. Oppgåva har adressert ein netto positiv nominell kontants…
Forbrukerfleksibilitet: Et alternativ til nettinvesteringer? : En analyse av potensialet for forbrukerfleksibilitet for Agder Energi Nett
2018
Masteroppgave industriell økonomi og teknologiledelse IND590 - Universitetet i Agder 2018 Strømnettet må dimensjoneres etter de største effekttoppene i året, som typisk er på juleaften, når alle lager middag samtidig, eller på årets kaldeste dag, da alle varmeovner står på. Dette betyr at strømnettet i alle andre perioder har ledig kapasitet. For å sikre en mer effektiv utnyttelse av det eksisterende strømnettet, må disse effekttoppene reduseres og jevnes ut. Et tiltak for å oppnå dette er forbrukerfleksibilitet. I begrepet forbrukerfleksibilitet inngår både endringer i kundeadferd som følge av prissignaler, og fjernstyrte utkoblinger av forbrukslaster. Å redusere eller unngå å forsterke st…
Potential for Usage of Thermoelectric Generators on Ships
2010
Published version of an article from the journal: Journal of Electronic Materials. he original publication is available at Springerlink. http://dx.doi.org/10.1007/s11664-010-1189-1 The useful waste heat potential for a bulk carrier has been evaluated as a preliminary step towards developing a thermoelectric generator (TEG) waste heat recovery system for ships. A medium-sized bulk carrier produces 6.2 MW of waste heat, and the most promising usable sources for the TEG are shown herein to be the exhausts from the main engine and the sludge oil incinerator.
Power Quality Analysis of Offshore Wind Farms : Evaluating how different turbulence spectra will affect the power quality from offshore windsfarms us…
2020
Master's thesis in Renewable energy (ENE500)
Fremtidig systemjording av regionalnettet i Agder
2018
Masteroppgave fornybar energi ENE500 - Universitetet i Agder 2018 System earthing describes how the neutral of a transformer is connected to ground. If a ground fault occurs, the system earthing is to detect and manage the fault current in such a way that it does not inflict damage on humans or the grid. An increasing fault current in compensated earthed networks have recently started to cause concerns in the Norwegian regional grid. Grid expansions, upgrades in operating voltage and increased amount of cables are factors that have made the fault current rise in many parts of the regional grid. Due to this, a review of possible system earthing designs has been desired, to insure a future-or…
Building integrated PV system sizing based on techno-economics evaluation: Design study for a Southern Norwegian house
2021
Master's thesis in Renewable energy (ENE500) Renewable energy sources are promising to take a significant share in the energy sector as a viable option for integrating with conventional fossil fuel power plants. This thesis contributes to the ongoing studies about building integrated photovoltaic (BIPV) system energy storage. The system comprises the photovoltaic array to capture solar energy, a power converter to change over AC and DC, a grid connection, and a lead-acid battery to store energy. The modeling is also completed by assessing the required load, specifications and choosing the components associated with the system. The geographic area, solar irradiance, and load consumption upon…
Investigation of Outdoor Performance of Silicon Photovoltaic Modules at Different Installation Angles
2021
Master's thesis in Renewable energy (ENE500) The objective of this master thesis is to analyse and compare the performance of two different PV technologies mounted at different tilt angles and orientations. The PV modules are installed on the roof of the J5 building in the University of Agder, located in Grimstad, Norway. The analysis was carried out by comparing 13 months of measured data (from March 2020 to March 2021).The technologies assessed are mono crystalline silicon and poly crystalline silicon, mounted at atilt angle of 10◦East/West, 45◦South and 90◦South.
Wind Turbines for the Power Supply for Offshore Fish Farms : A Case Study for the Norwegian West Coast
2017
Master's thesis Renewable Energy ENE500 - University of Agder 2017 In this thesis the power consumption of a fish farm is set in relation to the expected power production from a wind turbine in order to assess the feasibility of this combination. The fish farm, called Rataren, is located in Sør-Trøndelag and hourly data on power consumption is available in the period 1st February 2016 until 31st August 2016, as a result of change in energy source from diesel generators to the onshore power grid. This is one of Norway’s largest fish farms and has 14 cages during the studied period. There are some minor data losses that are removed from the data sets. Wind speed, air and water temperatures at…
Optimization of multi-reservoirpumped-storage hydropower system using differential evolution
2019
Master's thesis Renewable Energy ENE500 - University of Agder 2019 The study has proposed a long-term optimization model of a multi-reservoirpumped-storage hydropower system which is located in the Aust-Agder region.Based on the requirement a pump has been installed at a particular site on the samechannel as of the turbine unit. The purpose of the pump installation is to elevate wa-ter from lower to the upper altitude reservoir during low power demand to avoidthe overflow or flooding. The flow rate and power data provided by the companyis used to do primary computations to calculate the necessary parameters. The datais discrete, therefore to get the variable expressions second-order polynom…
PEM Fuel Cell System : A practical approach for building, testing and controlling a self designed PEMFC stack
2017
Master's thesis Renewable Energy ENE500 - University of Agder 2017 Fuel cells are an effcient way to produce electricity, especially if it is combined with heat pro- duction. If designed to consume hydrogen, like PEMCF, the only byproduct is water in its purest form H2O. This would have a great impact in the endeavors for a cleaner environment in densely populated areas. The potential for this technology is widespread, seeing usage from user electronics to onsite power production for commercial buildings. We believe that this technology will be even more common in the future, and therefore we would like to create a simple, but useful, fuel cell system for educational purpose. An "easily tak…