Search for dissertations about: "hydrogen fuel"

Showing result 1 - 5 of 279 swedish dissertations containing the words hydrogen fuel.

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

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

    Abstract : .... READ MORE

  4. 2. On direct hydrogen fuel cell vehicles : modelling and demonstration

    Author : Kristina Haraldsson; Per Alvfors; Dougal J. Nelson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical engineering; direct hydrogen; Proton Exchange Membrane; PEM; fuel cell; fuel cell vehicle; fuel cell hybrid vehicles; on-board hydrogen storage; Kemiteknik; Chemical engineering; Kemiteknik;

    Abstract : In this thesis, direct hydrogen Proton Exchange Membrane (PEM) fuel cell systems in vehicles are investigated through modelling, field tests and public acceptance surveys. A computer model of a 50 kW PEM fuel cell system was developed. The fuel cell system efficiency is approximately 50% between 10 and 45% of the rated power. READ MORE

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

    Author : Marita Nilsson; Lars J. Pettersson; Gunther Kolb; KTH; []
    Keywords : 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;

    Abstract : 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. READ MORE

  6. 4. Modelling of a proton exchange membrane fuel cell system for automotive applications

    Author : Kristina Johansson; KTH; []
    Keywords : Proton exchange membrane PEM; Fuel cell vehicle; Hydrogen; Hydrogen storage; Fuel consumption; Electric vehicles; Drive;

    Abstract : .... READ MORE

  7. 5. Life cycle navigation through future energy carriers and propulsion options for the energy transition in shipping

    Author : Fayas Malik Kanchiralla; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; environmental impact; life cycle costing; battery electric; fuel cells; electro-fuel; technical feasibility; economic impact; hydrogen; life cycle assessment; carbon capture; marine fuel; engines; ammonia; carbon abatement cost; shipping; methanol;

    Abstract : The shipping industry's heavy reliance on fossil fuels has a detrimental effect on the global climate, human health, and the natural environment. The shipping sector now relies on the use of cheap and energy-dense heavy fuel oil and is perceived as ‘difficult-to-decarbonize’. READ MORE