Search for dissertations about: "I combustion dissertations"

Showing result 1 - 5 of 20 swedish dissertations containing the words I combustion dissertations.

  2. 1. Tribology for Greener Combustion Engines : Scuffing in Marine Engines and a Lubricating Boric Acid Fuel Additive

    Author : Petra Olander; Staffan Jacobson; Roland Larsson; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Friction; wear; lubrication; energy loss; atmospheric emissions; fuel efficiency; transport.; Teknisk fysik med inriktning mot tribomaterial; Engineering Science with specialization in Tribo Materials;

    Abstract : This thesis aims at increased knowledge in two fields of tribological research; both related to making currently used combustion engines greener. The first field regards the possibilities of using a boric acid fuel additive to increase fuel efficiency. READ MORE

  4. 2. Characterization of conversion zones in a reciprocating grate furnace firing wet woody biomass

    Author : Narges Razmjoo; Strand Michael; Chungen Yin; Linnéuniversitetet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biomass combustion; Grate firing; Fuel bed; Moisture; Gas phase; Conversion zone; Experimental; Temperature distribution; Gas analysis; Bioenergiteknik Energi- och Miljöteknik; Bioenergy Technology;

    Abstract : Grate-firing systems are a common and popular combustion technology for burning biomass. However, combustion of biomass in these furnaces may emit a large amount of pollutants in the form of CO, CH4, PAH, NOx, and particles. READ MORE

  5. 3. Uncertainty, variability and environmental risk analysis

    Author : Monika Filipsson; Tomas Öberg; Bo Bergbäck; Lars Rosén; Linnéuniversitetet; []
    Keywords : Contaminated land; exposure assessment; exposure factors; risk analysis; risk perception; uncertainty; variability; probabilistic risk assessment; NATURAL SCIENCES; NATURVETENSKAP; Miljövetenskap; Environmental Science;

    Abstract : The negative effects of hazardous substances and possible measures that can be taken are evaluated in the environmental risk analysis process, consisting of risk assessment, risk communication and risk management. Uncertainty due to lack of knowledge and natural variability are always present in this process. READ MORE

  6. 4. Automotive Remanufacturing in a Changing Market : Challenges and Opportunities in a market with a growing share of electric cars

    Author : Robert Casper; Erik Sundin; Mats Björkman; Amir Rashid; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Circular Economy; Remanufacturing Process Challenges and Improvements; Process Efficiency; Automotive Part Remanufacturing and Reuse; Internal Combustion Engines ICE ; Battery Electric Vehicles BEV ; Cirkulär Ekonomi; Återtillverkning; Återtillverkningsprocesser; Processeffektivitet; Bilindustri; Förbränningsmotorer; Elbilar; Elektrifiering;

    Abstract : This doctoral thesis deals with closed-loop supply chains, which include remanufacturing. Remanufacturing can be described as an industrial process to bring back a used good into an “as-good-as-new” condition. Furthermore, focus is put on one of the largest global industry sectors: the automotive industry. READ MORE

  7. 5. Diesel exhaust and wood smoke : mechanisms, inflammation and intervention

    Author : Ala Muala; Thomas Sandström; Mark W Frampton; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Air pollution; deposition; bronchoscopy; Immunohistochemstry; filter; NO bioavailability; lungmedicin; Lung Medicine;

    Abstract : Background Particulate matter (PM) air pollution is associated with increased respiratory and cardiovascular morbidity and mortality. Diesel engine exhaust (DE) and wood combustion are major contributors to ambient air pollution and adverse health effects. READ MORE