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Visar resultat 1 - 5 av 347 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Multipactor in Low Pressure Gas

    Författare :Richard Udiljak; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : .... LÄS MER

  3. 2. Multipactor in low pressure gas and in nonuniform rf field structures

    Författare :Richard Udiljak; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; detection methods; iris; low pressure gas; coax; nonuniform fields; Multipactor; microwave discharge; breakdown; discharge;

    Sammanfattning : Resonant electron multiplication in vacuum, multipactor, is analysed for several geometries where the RF electric field is nonuniform. In particular, it is shown that the multipactor behaviour in a coaxial line is both qualitatively and quantitatively different from that observed with the conventionally used simple parallel-plate model. LÄS MER

  4. 3. Experimental Investigations of High Pressure Catalytic Combustion for Gas Turbine Applications

    Författare :Jeevan Jayasuriya; Torsten Fransson; Groppi Gianpiero; KTH; []
    Nyckelord :Gas Turbine Combustion; Catalytic Combustion; High Pressure; Ultra-low emissions; SRA - Energy; SRA - Energi;

    Sammanfattning : This work is devoted to generate knowledge and high quality experimental data of catalytic combustion at operational gas turbine conditions.The initial task of the thesis work was to design and construct a high pressure combustion test facility, where the catalytic combustion experiments can be performed at real gas turbine conditions. LÄS MER

  5. 4. Bimetallic Palladium Catalysts for Methane Combustion in Gas Turbines

    Författare :Katarina Persson; Sven Järås; Jon McCarty; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; activity; bimetal; catalytic combustion; DRIFTS; EDS; gas turbine; methane; morphology; palladium; platinum; pressure; PXRD; stability; TEM; TPO; XPS; Chemical engineering; Kemiteknik;

    Sammanfattning : Catalytic combustion is a promising combustion technology for gas turbines, which results in ultra low emission levels of nitrogen oxides (NOx), carbon monoxide (CO) and unburned hydrocarbons (UHC). Due to the low temperature achieved in catalytic combustion almost no thermal NOx is formed. LÄS MER

  7. 5. An Investigation of Low Temperature Combustion Using high Levels of EGR

    Författare :Malin Alriksson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; low soot; low NOx; low temperature combustion; emissions; diesel combustion;

    Sammanfattning : The diesel engine offers good fuel economy and generates low carbon dioxide (CO2) emissions, but it is also a source of undesirably high particulate matter (PM) and nitrogen oxide (NOx) emissions, which are subject to increasingly strict legislative limits because of their adverse effects on the environment and human health. Thus, in recent years, several combustion concepts have been developed to meet future legislation requirements, one of which is Low Temperature Combustion (LTC) using high levels of EGR (Exhaust Gas Recycling). LÄS MER