Sökning: "fluidized bed"

Visar resultat 11 - 15 av 170 avhandlingar innehållade orden fluidized bed.

  1. 11. Fluidized bed combustion - modeling and mixing

    Författare :David Pallarès; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fluidized bed combustion; Mixing; Modeling;

    Sammanfattning : First demonstrated on industrial scale in 1976, fluidized bed combustion (FBC) rapidly became an established technology for solid fuel combustion with a currentinstalled capacity of about 30 GWe and power plants ranging from 10 to 460 MWe.The widespread use of the FBC technology both under so-called circulating and bubbling conditions (i.e. LÄS MER

  2. 12. Fluid dynamics of circulating fluidized-bed boilers

    Författare :Andreas Johansson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; bottom bed; CFB boilers; wall-layer; fluid dynamics; large-scale circulating fluidized bed; loop seal;

    Sammanfattning : .... LÄS MER

  3. 13. Fluid Dynamics of a Wurster-type Fluidized Bed - A Numerical and Experimental Study

    Författare :Anna Magnusson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; optical probe; frictional stress; fluidized bed; Wurster bed; kinetic theory;

    Sammanfattning : The fluid dynamics of a Wurster bed, a fluidized bed used in the pharmaceutical industry for the coating of small particles or pellets, is investigated numerically and experimentally. The main objective of the thesis is to obtain greater knowledge of the flow properties in the Wurster bed. LÄS MER

  4. 14. Ash Behavior in Fluidized-Bed Combustion and Gasification of Biomass and Waste Fuels : Experimental and Modeling Approach

    Författare :Farzad Moradian; Högskolan i Borås; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fluidized-bed; combustion; gasification; waste-derived fuels; biomass; ash-related problems; deposit; fouling; slagging; bed agglomeration; thermodynamic equilibrium modeling;

    Sammanfattning : Over the past few decades, a growing interest in the thermal conversion of alternative fuels such as biomass and waste-derived fuels has been observed among the energy-producing companies. Apart from meeting the increasing demand for sustainable heat and power production, other advantages such as reducing global warming and ameliorating landfilling issues have been identified. LÄS MER

  5. 15. Fluidized Bed Operating Parameters and Eulerian Erosion Models

    Författare :Mattias Gustavsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Eulerian erosion model; fluidized bed; distributor plate; slugging; plenum chamber; brittle; two-fluid model; ductile; air-feed system;

    Sammanfattning : A numerical two-fluid code, Gemini 2D, was adapted to study gas-solid fluidization in arbitrary 2D domains. The code was also used to study fluid dynamic mechanisms of dense particle flow that cause ductile and brittle erosion of solids. LÄS MER