Search for dissertations about: "alternative energy gas"

Showing result 1 - 5 of 141 swedish dissertations containing the words alternative energy gas.

  1. 1. Power to gas Bridging renewable electricity to the transport sector

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Farzad Mohseni; KTH.; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; transport; renewable electricity; synthetic fuels; energy; power to gas;

    Abstract : Globally, transport accounts for a significant part of the total energy utilization and is heavily dominated by fossil fuels. The main challenge is how the greenhouse gas emissions in road transport can be addressed. Moreover, the use of fossil fuels in road transport makes most countries or regions dependent on those with oil and/or gas assets. READ MORE

  2. 2. Process Integration Opportunities for Synthetic Natural Gas (SNG) Production by Thermal Gasification of Biomass

    University dissertation from Chalmers University of Technology

    Author : Stefan Heyne; Chalmers tekniska högskola.; Chalmers University of Technology.; [2010]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Kemiteknik; Chemical engineering; Kemisk process- och produktionsteknik; Chemical process and manufacturing engineering; Kemisk energiteknik; Chemical energy engineering; process integration; synthetic natural gas; renewable energy; biomass; energy systems;

    Abstract : Synthetic natural gas (SNG) from gasified biomass is one promising option to produce renewable transport fuels. This thesis presents a process integration study investigating thermal gasification of biomass for the production of SNG and identifies critical conversion steps for the overall process performance. READ MORE

  3. 3. Energy system perspectives on transport biofuel policies – a modelling analysis

    University dissertation from Chalmers University of Technology

    Author : Martin Börjesson; Chalmers tekniska högskola.; Chalmers University of Technology.; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Optimeringslära; systemteori; Optimization; systems theory; Mekanisk och termisk energiteknik; Mechanical and thermal engineering; Miljöteknik; Environmental engineering; Teknik och social förändring; Technology and social change; energy systems; transport; biofuels; fuel tax; biomass gasification; district heating; model; MARKAL; linear programming; cost-optimization;

    Abstract : Climate concerns and energy security issues have in recent years triggered the interest in biofuels for transport. This has resulted in governmental and intergovernmental targets that, if implemented, will lead to an unprecedented growth in biofuel production. READ MORE

  4. 4. Fuel Mixing in Gas-Solid Fluidized Beds: A Computational and Experimental Study

    University dissertation from Chalmers University of Technology

    Author : Meisam Farzaneh; Chalmers tekniska högskola.; Chalmers University of Technology.; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fluidization; Eulerian-Lagrangian; Eulerian-Eulerian; Fuel mixing; Numerical Simulation; Particle Image Velocimetry PIV ;

    Abstract : Fluidized bed technology has been commercially applied over several decades. However there is still a lack of knowledge that can provide a detailed understanding of the combustion process in fluidized-bed furnaces. READ MORE

  5. 5. Humidification Processes in Gas Turbine Cycles

    University dissertation from Division of Thermal Power Engineering Department of Energy Sciences Faculty of Engineering Lund University

    Author : Marcus Thern; Lunds universitet.; Lund University.; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; applied thermodynamics; Thermal engineering; Energiforskning; Energy research; HAT; Biomass; Biofuel; Humidification; Evaporation; Evaporative gas turbine ; Humid air turbine ; Termisk teknik; termodynamik;

    Abstract : The global climate change caused by emissions of greenhouse gases from combustion processes has been recognized as a continuously growing problem and much research focuses on improving the environmental performance of gas turbines. The potential of improving gas turbine component efficiencies has become smaller each decade and therefore, thermodynamic cycles have become more interesting for power producing units. READ MORE