Sökning: "Freezing Temperature"
Visar resultat 1 - 5 av 90 uppsatser innehållade orden Freezing Temperature.
1. Greenhouse gas emissions from peat soil thawing in spring : a comparison between fertilized and unfertilized soil
Master-uppsats, SLU/Dept. of Soil and EnvironmentSammanfattning : Peat soils drained for agriculture and forestry contribute to a significant amount of greenhouse gas emissions. Nitrous oxide is a greenhouse gas with high warming potential and agriculture in general accounts for about 70 % of nitrous oxide emissions. LÄS MER
2. Seasonal Variability of Ice Nucleating Particles (INP) in Southern Sweden
Master-uppsats, Göteborgs universitet / Institutionen för biologi och miljövetenskapSammanfattning : Cloud ice crystals are formed by ice-nucleating particles (INPs). The micro-physical properties of clouds, precipitation formation and the life cycle of clouds are strongly influenced by the presence or absence of ice. Therefore knowledge of atmospheric INP concentrations is crucial to improve weather forecasting and climate projections. LÄS MER
3. Modeling of the trajectory of ice thrown from a wind turbine
Master-uppsats, Lunds universitet/Institutionen för energivetenskaperSammanfattning : There is a growing number of wind turbines installed in cold temperature zones as a result of the restricted space for new construction. Due to ice deposition on the turbine blades, the increasing installation of wind turbines in freezing temperature areas presents many challenges: ice accumulation increases weight, unbalances the rotor, diminishes aerodynamic efficiency, and creates safety issues. LÄS MER
4. WEAR RESISTANT MULTI FUNCTIONAL POLYMER COATINGS
Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematikSammanfattning : This study aims to develop coatings which show wear resistant behaviour along with multiple functions such as improved ice adhesion, better freezing delay etc which help in improving the effectiveness of the wind turbine efficiency. The significance of anti-icing/de-icing solutions for wind turbines is emphasized since ice accretion can cause serious issues in generation of power and might lead to damage of blades. LÄS MER
5. Formrivningsprognostisering med HETT22 : En jämförelsestudie av HETT 22 som prognosverktyg
Uppsats för yrkesexamina på grundnivå, Högskolan i Halmstad/Akademin för företagande, innovation och hållbarhetSammanfattning : The increase of population results in more housing buildings and infrastructure, which increases the need for stable concrete structures that can safely accommodate people. In countries like Sweden, where temperatures are below zero for several months a year, housing construction cannot come to a halt. LÄS MER