Kärnkraft
Ett arbete för drifttekniker?
… has to be developed, taking the findings of this thesis into account: high electricity prices have negative effect on availability and that low liquidity on the market causes short endurance.
Uppsatser om electric
785 uppsatser · sida 48 av 53
Social media & marknadsföring
… has to be developed, taking the findings of this thesis into account: high electricity prices have negative effect on availability and that low liquidity on the market causes short endurance.
Förbrukningsreduktion
Ett alternativ till gasturbiner som snabb aktiv störningsreserv?
… has to be developed, taking the findings of this thesis into account: high electricity prices have negative effect on availability and that low liquidity on the market causes short endurance.
Utvärdering av ett värmepumpsystems prestanda till en HWC-tvättmaskin
Med fokus på fläktvarvtal och köldmedieflöde
… air and the refrigerant are low. Further, the energy consumption in terms of electricity used in heating the water has been lowered by 71% in comparison to a refernce washing machine using no heat pump device. The paper also discusses possible improvement actions related to this …
Morgondagens effektiva fjärrvärme
En beskrivande litteraturstudie
… in a fuel. This is the case of cogeneration plants where serial generation of electricity and thermal energy increases efficiency compared with the parallel generation where heat is generated locally and electricity is generated centrally. Serial generation thus allows for lower …
Bergkyla och bergvärmeutredning för industrilokalen Rödbergsmyran 5 i Umeå, Västerbotten.
… by additional heating. A geothermal heat pump of 40 kW who require a 30 kW electrical heater to cover additional heating would be appropriate for this project. An investment of geothermal heating and cooling would require five bore holes of 210 meters wish provide an investment …
Tillverkningsanpassning av produkt för kostnadsreducering
Nya tillverkningsmetoder och verktygsparametrar
… the circuit board inside. But at the same time it must allow sound, light an electrical communication to pass through. The product is supposed to be used by the police as a sound barrier and an alternative to water cannons and distraction grenades. But the product may also find …
Underlag till energieffektiviserande åtgärder i nätstationer
… In many residential areas, the distribution grid is designed and rated for electric heating as the heating in the houses. As many of the houses later has been converted to other types of heating, their electricity use has decreased and the total power output from many of the …
Hur påverkar en ökad andel solceller Umeå Energis elnät?
? En utredning med fokus på spänningsvariationer och osymmetri inom landsbygds- och tätortsnät vid en- och trefasanslutning av solcellsanläggningar
… be an important prerequisite to achieve a sustainable society. Scandinavia's electrical system is in many respects superior, and Sweden has a fossil free electricity generation at 97 % and a reliability of electricity distribution at 99.98 %. Meanwhile, the EU has an ambition to …
Ökad resurseffektivitet i kraftvärmesystem genom säsongslagring av värme
… load during winter. Meanwhile the compression heat pumps have a large cost for electricity. This causes a negative net present value according to the result, while the systems with absorption heat pumps have a discounted pay-back time of 12 years. Another positive effect of the …
Transformatordiagnostik genom dissolverad gasanalys
The transformer is one of the most common and most important electric machines for power companies. Cost of investment and the economic worth of a transformer are counted in millions of SEK. Because of that, proper maintenance actions that may lead to longer technical life time …
Utvärdering och uppdatering av typkurvor
… AB. Theload curve method is a tool used to forecast the strain of an electric grid. The method is based oncustomer annual energy consumption, outdoors temperature as well as customer category. Theload curve method was established by Svenska Elverksföreningen at the start of the …
Termoelektrisk lagring i system med fjärrvärmeproduktion
… power, energy storagebecomes necessary to help reduceproduction peaks. Thermoelectric EnergyStorage is a method still in researchphase, which stores electricity in hotwater at a temperature of 120 ° C. Thisthesis aims to examine whether theThermoelectric Energy Storage would …
Analys av mätdata från nätstationer
… and giving examples of analyzes that collected data can be used for. The electricity meter which Fortum has installed is a EDMI-Mk10A which is set to measure max/average/min values with a one hour time resolution of the following parameters: voltage (per phase), current (per …
Energikartläggning av ett 1970-tals lägenhetshus på Skarpövägen i Nacka kommun
Simulering av energibesparande åtgärder i ”IDA Indoor Climate and Energy”
… laundry building showed that there is a possibility to save up to 75% of the electricity usage by replacing certain equipment that is dependent on a high amount of energy. Throughout the whole analysis it has been clear that the energy usage in the buildings are higher than …