Sökning: "alternative fuel"

Visar resultat 1 - 5 av 363 avhandlingar innehållade orden alternative fuel.

  1. 1. Risk analysis of hydrogen as a vehicular fuel

    Författare :Helen Bigün; KTH; []
    Nyckelord :Hydrogen; Liquid hydrogen; Safety analysis; Risk analysis; Fault tree; Event tree; Failure modes; Electric vehicle; Fuel cell; Driving H2 fuelled vehicle; Alternative fuel;

    Sammanfattning : .... LÄS MER

  3. 2. Electrochemical properties of alternative polymer electrolytes in fuel cells

    Författare :Annika Carlson; Rakel Lindström; Göran Lindbergh; Carina Lagergren; Mohamed Mamlouk; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fuel cell; anion exchange membrane; proton exchange membrane; electrode morphology; hydrogen oxidation reaction; water transport; poly phenylene oxide ; cellulose; bränslecell; anjonledande membran; protonledande membran; elektrodstruktur; vätgasoxidation; vattentransport; poly fenylenoxid ; cellulosa; Chemical Engineering; Kemiteknik;

    Sammanfattning : Fuel cells, using hydrogen as energy carrier, allow chemically‑stored energy to be utilized for many applications, including balancing the electrical grid and the propulsion of vehicles. To make the fuel cell technology more accessible and promote a sustainable energy society, this thesis focuses on alternative polymer electrolytes, as they can potentially lead to a lower cost and a more environmentally‑friendly fuel cell. LÄS MER

  4. 3. Fuel choice, fuel switching and improved cook stoves in Vietnamese households: Analysis, models and proposals for new solutions

    Författare :Niklas Vahlne; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fuel choice; fuel ladder; cooking; Vietnam; developing; improved stoves; rural households;

    Sammanfattning : A majority of rural households in the developing world use solid biomass fuels for cooking. This use has severe negative health effects, is often either expensive or time consuming, and contributes to global warming. LÄS MER

  5. 4. Injection and Combustion of Alternative Fuels in Spark Ignited Direct Injection Engines

    Författare :Lars Christian Riis Johansen; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; gas fuel; direct injection; E85; stratified combustion; spark ignition; alternative fuels; optical measurements;

    Sammanfattning : Increasingly stringent vehicle emission legislation necessitates increasingly efficient combustion engines. The use of direct injection in spark ignited engines improves engine efficiency and reduces CO2 emissions. LÄS MER

  7. 5. Hydrogen Generation for Fuel Cells in Auxiliary Power Systems

    Författare :Marita Nilsson; Lars J. Pettersson; Gunther Kolb; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; autothermal reforming; auxiliary power unit; diesel; dimethyl ether; fuel cell; fuel-flexible reformer; hydrogen; PdZn alloy; reforming catalyst; reformer design; Rh; Chemical engineering; Kemiteknik;

    Sammanfattning : Heavy-duty trucks are in idle operation during long periods of time, providing the vehicles with electricity via the alternator at standstill. Idling trucks contribute to large amounts of emissions and high fuel consumption as a result of the low efficiency from fuel to electricity. LÄS MER