Search for dissertations about: "verkningsgrad"
Showing result 21 - 25 of 71 swedish dissertations containing the word verkningsgrad.
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21. Signal Shaping and Sampling-based Measurement Techniques for Improved Radio Frequency Systems
Abstract : Wireless communication systems are omnipresent in our day-to-day life, with high expectations regarding capacity, reliability and power efficiency. In order to satisfy the capacity and reliability expectations, today's wireless systems are adopting sophisticated modulation schemes, such as orthogonal frequency division multiplexing (OFDM), which shape today's wireless signals with large bandwidths and high crest factors. READ MORE
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22. Waste-heat Recovery Using Thermoelectricity and Silicon Carbide Power Electronics
Abstract : Energy consumption in the world has increased continuously due to a growing population and increased energy consumption per capita. Moreover, the largest part of consumed energy still comes from fossil sources which in 2016 was more than 130 PWh. READ MORE
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23. Aerodynamic Investigation of Leading Edge Contouring and External Cooling on a Transonic Turbine Vane
Abstract : Efficiency improvement in turbomachines is an important aspect in reducing the use of fossil-based fuel and thereby reducing carbon dioxide emissions in order to achieve a sustainable future. Gas turbines are mainly fossil-based turbomachines powering aviation and land-based power plants. READ MORE
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24. Biocatalysed redox reactions - Possibilities and limitations
Abstract : The use of enzymes for synthetic applications is an area of increasing interest. Enzymes have been pointed out to be an environmentally friendly alternative to existing chemical methods, as well as making completely new synthetic routes possible. READ MORE
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25. Doping of Semiconductor Nanowires
Abstract : In this thesis, in situ doping during growth of III-V semiconductor nanowires, primarily for photovoltaic applications, is investigated. The nanowires were grown by metalorganic vapor phase epitaxy (MOVPE), with gold seed particles. READ MORE