Search for dissertations about: "hydrodynamics of fluidized bed"

Showing result 1 - 5 of 8 swedish dissertations containing the words hydrodynamics of fluidized bed.

  2. 1. Hydrodynamics of a fluidized bed : influence of pressure and fluidization velocity

    Author : Per Olowson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fluidized bed; tubes; bubble; particle drag force; through-flow velocity; minimum fluidization velocity; pressure probe; capacitance probe; pressurized fluidized bed; internals; gas flow distribution;

    Abstract : .... READ MORE

  4. 2. Simulation of a circulating fluidized bed boiler

    Author : Eric Peirano; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; combustion; emissions; simulation; heat transfer; circulation fluidized bed boilers CFBB ; hydrodynamics; mathematical modelling;

    Abstract : .... READ MORE

  5. 3. Hydrodynamics, Erosion and Heat Transfer in Pressurized Fluidized Beds

    Author : Jan Wiman; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; hydrodynamics erosion; heat transfer; tubes; fluidized bed; gas flow; pressurized fluidized bed; bubble;

    Abstract : Measurements of hydrodynamics, local tube erosion and local instantaneous bed-to-tube heat transfer were carried out in a cold, pressurized, fluidized bed with different horizontal tube banks. The influence of pressure, fluidization velocity, particle size and tube-bank geometry was studied. READ MORE

  6. 4. Solids Flow Pattern in Circulating Fluidized-bed Boilers

    Author : Andreas Johansson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; scale-up; hydrodynamics; combustion; loop seal; wall-layers; Circulating Fluidized Bed;

    Abstract : The background of this dissertation is the knowledge of circulating fluidized bed (CFB)technology, which has reached a level enabling units of several hundred megawatts ofelectricity to be constructed and employed. Yet an improved understanding of the technologyis needed in order to further develop and optimize large-scale combustion in CFB boilers,especially since the operating conditions and the geometries of large boilers differ from thosetypical for laboratory units, in which most of the research hitherto has been performed. READ MORE

  7. 5. CFD modeling of biomass combustion and gasification in fluidized bed reactors

    Author : Miao Yang; Strömningsteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biomass combustion and gasification; CFD simulation; Fluidized bed furnace; Distribution kernel method; Empirical pyrolysis model;

    Abstract : Biomass is an environmentally friendly renewable energy source and carbon-neutral fuel alternative. Direct combustion/gasification of biomass in the dense particle-fluid system is an important pathway to biomass energy utilization. READ MORE