Sökning: "Combustion characteristics"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden Combustion characteristics.

1. 1. Analysis of Alternative Fuels in Automotive Powertrains

   Uppsats för yrkesexamina på avancerad nivå, Linköpings universitet/Institutionen för systemteknik

   Författare :Andreas Gunnarsson; [2009]
   Nyckelord :Well-to-wheel analysis; alternative fuel; gasoline; diesel; methanol; ethanol; natural gas; biomethane; synthesis gas; hydrogen; biogas; biodiesel; FT-diesel; DME;

   Sammanfattning : The awareness of the effect emissions have on the environment and climate has risen in the last decades. This has caused strict regulations of greenhouse gas emissions. Greenhouse gases cause global warming which may have devastating environmental effects. Most of the fuels commercially available today are fossil fuels. LÄS MER

3. 2. Forestry and climate change mitigation : climate change mitigation potential for different rotation lengths in Norway spruce forests, Götaland, Sweden with a short and a long term perspective

   Y-uppsats, SLU/Southern Swedish Forest Research Centre

   Författare :Gustaf Gustafsson; [2009]
   Nyckelord :Rotation age; net emission CO2; carbon dioxide sink; time horizon; CO2FIX V 3.1; climate change; forest management; Kyoto protocol ;

   Sammanfattning : During the last year the awareness about the anthropogenic induced climate change due to increasing level of Green House Gases (GHGs), like for example carbon dioxide (CO2) has increased drastically. The atmospheric content of CO2 which is the GHG that the forest sector mainly can influence has increased from 280 ppm pre-industrial time (1750) to 379 ppm 2005. LÄS MER

4. 3. Effect of peat addition to woody biomass pellets on combustion characteristics in residential appliances

   Y-uppsats, Luleå tekniska universitet/Tillämpad fysik, maskin- och materialteknik/Energiteknik

   Författare :Ida-Linn Nyström; [2008]
   Nyckelord :Co-combustion; pellets; peat; biomass characteristics; emissions;

   Sammanfattning : Increased wood pellets demand in Scandinavia along with limited availability of wood assortments e.g. sawdust are pushing the market towards potentially more problematic raw materials with higher ash content, e.g. LÄS MER

5. 4. Förbränning av pellets framställda av defibrerad granråvara :

   Y-uppsats, SLU/Dept. of Forest Resource Management

   Författare :Gunnar Henriksson; [2008]
   Nyckelord :Biobränsle; defibrering; pelletering; partikelstorlek ;

   Sammanfattning : Fuel pellets are in Sweden mainly produced from sawdust and cutter shavings. Before the pelletising process the raw material is dried to attain consistent moisture content and ground up in a hammer mill. In the densification process (pelletising) the ground material is forced through holes in a rotating die. LÄS MER

7. 5. Pilot study: Modeling of Wildfires

   Magister-uppsats, Blekinge Tekniska Högskola/Sektionen för Teknik (TEK)

   Författare :Rickard Hansen; [2008]
   Nyckelord :mathematics - analysis; wildfire; modeling; forest fire; decision tool;

   Sammanfattning : There is presently no wildfire model developed for Swedish conditions, only a fire danger rating system (FWI) has been developed for Swedish conditions. The demand for a wildfire model has not been great in the past in Sweden but the climate changes now taking place increases the risk of large and intensive wildfires in Sweden. LÄS MER