238 uppsatser · sida 7 av 16
En förstudie i Leticia, Colombia
… med arbetet har varit att ta fram ett förslag på lämplig placering och val av turbinsystem, utifrån de förutsättningar som finns i området. Rapporten presenterar olika metoder för elproduktion i Amazonasregionen, turbinsystem anpassade för strömmandevattenkraft och resultat från …
… are profitable, that the repayment time isn’t too long. Solar cells and wind turbines are examined as well, but the repayment time for solar cells are too long at the moment. The repayment time for solar cells varies between 42 - 75 years, while the expected lifetime is 25 …
… i denna åt Olofströms Kraft AB. Småskalig, vattenkraft, elkraft, generator, turbin
The Swedish government have a goal that wind turbines shall produce 30 TWh by the year 2020, compared to about 3,5 TWh produced in Sweden during 2010. To minimize the disturbance that wind turbines create the Swedish Environmental Protection Agency has stated a guideline value …
… indepth in a case study.In the case study a system containing small scale wind turbines and photovoltaicsmounted on Gränby Centrums roof was examined. From data containing wind power,wind direction and total irradiation, possible production from a system weresimulated. Three …
Kvalitativ studie av Ica Maxi, Coop Forum och Citygross konkurrensstrategier
… indepth in a case study.In the case study a system containing small scale wind turbines and photovoltaicsmounted on Gränby Centrums roof was examined. From data containing wind power,wind direction and total irradiation, possible production from a system weresimulated. Three …
Fallstudie av elproducerande system på ett handelscentrum
… indepth in a case study.In the case study a system containing small scale wind turbines and photovoltaicsmounted on Gränby Centrums roof was examined. From data containing wind power,wind direction and total irradiation, possible production from a system weresimulated. Three …
Vindkraftsprojekt Järvafältet & vindkraft i Sverige
… aspects come into play when wind power is moving into the city. A wind turbine can affect the urban landscape, depending on where and how it is established. In urban areas, the large field directly attractive areas because out of its favorable wind conditions. Depending on how …
… The majority of the new production plants are solar cells, followed by wind turbines, and it is also in these the greatest efforts are made in this paper. Distributed generation is often seen as something positive since it will contribute to reduced transmission losses and …
Utveckling av modell för dokumentation och elkvalitetsberäkningar
… The majority of the new production plants are solar cells, followed by wind turbines, and it is also in these the greatest efforts are made in this paper. Distributed generation is often seen as something positive since it will contribute to reduced transmission losses and …
Kartläggning och utvärdering av olika lösningar för att kompensera reaktivt effekt i vindkraftparker
… till ca 10 Mkr. Givetvis skiljer sig SVC, SVC Light® och Siemens direktdriva turbiner sig en hel del åt både tekniskt och prismässigt, men samtliga lösningar bedöms likvärdiga i avseende av underhållskostnader och driftsäkerhet. Snabbare kompensering medför ett högre pris och …
… att muskelkraft varit den största energikällan till att vattenkraft, ångkraft, turbiner och elektricitet utnyttjats för det ökade behovet av energi.
Control of a diesel engine equipped with Variable Geometry Turbine (VGT) and Exhaust Gas Recirculation (EGR) requires a multivariable control method. One problem is that the engine system is non-linear. Furthermore there are strong cross-connections between inputs and outputs …
The running of gas turbines with low emissions causes high pressure pulsations to arise in the combustion chamber. These pulsations are high amplitude sound vibrations. At some frequencies these are harmful to the gas turbine. Hence these pulsations are monitored to avoid …
… fault detection system for surveillance of bearing temperature in hydropower turbines. The parameters used except the bearing temperature were cooling water temperature and cooling water flow. A simple static model based on data sampled every minute was developed to estimate the …
