Sökning: "Fluidized bed boilers"

Visar resultat 11 - 15 av 43 avhandlingar innehållade orden Fluidized bed boilers.

  1. 11. Solids Flow in Large-Scale Circulating Fluidized Bed Furnaces

    Författare :Tove Djerf; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Solids flow; Transport zone; Fluid-dynamical down-scaling; Splash zone; Circulating fluidized bed boilers; Dense bed;

    Sammanfattning : The flow pattern of solids established in large-scale circulating fluidized bed (CFB) furnaces is of great importance for the performance of commercial CFB boilers, as it governs the heat transfer and mixing of the fuel and any other reactive solids. The solids flow pattern in the riser is crucial for the design and scaling up of large-scale CFB technologies for the thermochemical conversion of solids. LÄS MER

  2. 12. 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

  3. 13. 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

  4. 14. Thermal and fluid-dynamic characteristics of circulating fluidized bed boilers

    Författare :Mohammad Reza Golriz; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; membrane wall; circulationg fluidized bed boilers; residence length; particle velocity; temperature distribution; heat transfer;

    Sammanfattning : .... LÄS MER

  5. 15. Zirconia cell measurements of fluctuations between oxidizing and reducing conditions in a circulating fluidized bed boiler

    Författare :Klas Bergqvist; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fluctuation; response time; zirconia cell; oxygen measurement; oxygen concentration; oxidizing; circulating d´fluidized bed boilers; reducing; CFB; fluidized bed boilers;

    Sammanfattning : .... LÄS MER