Sökning: "Wind stress"
Visar resultat 11 - 15 av 52 avhandlingar innehållade orden Wind stress.
11. Legal preconditions for wind power implementation in Sweden and Denmark
Sammanfattning : Swedish energy policy relies heavily on the promotion of renewable energy resources, in particular wind energy and in 2002 the Swedish Government adopted a national planning goal of a yearly wind power generation of 10 TWh by 2015, which implies a substantial increase from the current 0.6 TWh level. LÄS MER
12. Methods for the Evaluation of Wingsails with a Crescent-Shaped Profile
Sammanfattning : Seaborne transportation accounts for a large proportion of greenhouse gas (GHG) emissions. The International Maritime Organization (IMO) has stipulated that GHG emissions should be reduced by 50% before 2050 compared to 2018. The use of wind-assisted ship propulsion (WASP) is considered one of the most effective ways to reduce GHG emissions. LÄS MER
13. Air and Water Tightness in Building Envelopes - Evaluation of Methods for Quality Assurance
Sammanfattning : The purpose of this work is to contribute to a process formaking buildings with good function and to avoid prematurefaults.The design, construction and installation of low-slopedroofs are important parts of creating a durable building. LÄS MER
14. Cracking in Reinforced Concrete Structures Due to Imposed Deformations
Sammanfattning : This thesis is concerned with modeling of the cracking process in reinforced concrete due to imposed deformations. Cracking is investigated both at early ages, during hydration, and at mature age when the final properties of the concrete are reached. LÄS MER
15. On soft-switching isolated AC/DC converters without auxiliary circuit
Sammanfattning : The thesis is concerned with a class of power electronic converter systems that permit bidirectional AC/DC conversion with galvanic separation of the AC and DC sides by a transformer operating at elevated frequency. The systems consist of a capacitively snubbered voltage source converter and a cycloconverter, separated by the mentioned transformer. LÄS MER