Sökning: "speed measurement"
Visar resultat 21 - 25 av 354 avhandlingar innehållade orden speed measurement.
21. Vertical Axis Wind Turbines : Electrical System and Experimental Results
Sammanfattning : The wind power research at the division of Electricity at Uppsala University is aimed towards increased understanding of vertical axis wind turbines. The considered type of wind turbine is an H-rotor with a directly driven synchronous generator operating at variable speed. LÄS MER
22. Development of speed-power performance models for ship voyage optimization
Sammanfattning : Various measures, such as voyage optimization, performance monitoring and ship cleaning schedules, have been developed to help increase the energy efficiency of shipping operations. One of the most important elements needed for these measures is a reliable ship speed-power model. LÄS MER
23. Advanced Optical Diagnostics in Particle Combustion for Biomass and Metal as Alternative Fuels
Sammanfattning : The energy sector is in urgent need for carbon-free strategies considering environmental pollutions and climate change impact. Two kinds of solid fuels, biomass and metal particles have been studied in this thesis aiming at CO2 emission reduction or zero carbon emission. LÄS MER
24. Low-Frequency Noise in Si-Based High-Speed Bipolar Transistors
Sammanfattning : .... LÄS MER
25. Experimental Studies on the Aeroacoustics of Low-Speed Axial Fans
Sammanfattning : Low-speed axial fans are used in thermal management systems of internal combustion and electric vehicles. These systems are compact, cost-effective, all while addressing safety concerns. On the downside, fan operation leads to flow induced noise. LÄS MER