Search for dissertations about: "bubbling"
Showing result 1 - 5 of 51 swedish dissertations containing the word bubbling.
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1. Heat and Mass Transfer to a Single Particle in Fluidized Bed
Abstract : Heat and mass transfer to/from a single active particle in bubbling and circulating fluidized beds have been studied with application to fluidized bed combustion. A method of calculation of the heat and mass transfer coefficients in a bubbling fluidized bed (BFB) has been developed. READ MORE
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2. SOLIDS MIXING IN BUBBLING FLUIDIZED BEDS
Abstract : For solid fuels, thermochemical conversion processes such as combustion and gasification are especially suitable to be carried out in fluidized bed units because of the relatively high mixing rates, fuel flexibility and the possibility to use active bed material to enhance process efficiency. Mixing of fuel is important to ensure complete conversion and reduced emissions of unburnt material. READ MORE
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3. A Numerical Study of the Fluid Dynamics of Bubbling Fluidized Beds
Abstract : The two-fluid model was evaluated as a tool for predicting local flow behaviour in bubbling fluidized beds. A review is given of the two-fluid model approach for simulation of the flow in bubbling fluidized beds. READ MORE
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4. Thermodynamics and Kinetics in Metallurgical Processes - with a Special Focus on Bubble Dynamics
Abstract : Gas stirring is commonly used in the steelmaking processes to reinforce chemical reactions, kinetic transfer, and inclusion removal, etc. This dissertation concentrates on multiphase flows with gas bubbling to study fluid dynamics and thermodynamics in metallurgical processes. READ MORE
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5. Fluid Dynamics of the Bottom Bed of Circulating Fluidized Bed Boilers
Abstract : The fluid dynamic conditions in the furnace of a fluidized bed boiler influence the combustion and the production of harmful emissions. A substantial amount of the bed material in a circulating fluidized bed (CFB) boiler is present as a dense bubbling bottom bed. READ MORE