Modelling of the gas flow in fluidized beds

dc.contributor.authorGioia, Federica
dc.contributor.departmentChalmers tekniska högskola / Institutionen för energi och miljösv
dc.contributor.departmentChalmers University of Technology / Department of Energy and Environmenten
dc.date.accessioned2019-07-03T14:34:14Z
dc.date.available2019-07-03T14:34:14Z
dc.date.issued2017
dc.description.abstractFluidized bed technology plays an important role in the transition of the current energy system to full sustainability, both as main first choice for thermochemical biomass conversion (which is considered CO2 neutral) and as basis for chemical looping combustion (CLC), which is considered to be the second generation of carbon capture applications, since it allows CO2 capture with no inherent energy penalty. The aim of the work is to formulate and implement a proper description of the gas flow inside a fluidized bed, covering a variety of scales and applications. This will be done by the development of an own code, since this provides enhanced flexibility with respect to already developed modelling tools available on the market. The influence of four parameters (inlet velocity, exchange coefficient between phases in the dense bed, dense bed height and lateral diffusion coefficient) in regular fluidized bed combustion is studied, in particular considering a lateral injection of volatiles resembling biomass combustion. The results have been mostly in line with the expectations, showing a high dependence of the system from the gas mixing more than kinetics, and, on the other hand, that the exchange between phases in the dense bed and the dense bed height are not influential parameters.
dc.identifier.urihttps://hdl.handle.net/20.500.12380/250874
dc.language.isoeng
dc.setspec.uppsokLifeEarthScience
dc.subjectEnergi
dc.subjectHållbar utveckling
dc.subjectEnergiteknik
dc.subjectEnergy
dc.subjectSustainable Development
dc.subjectEnergy Engineering
dc.titleModelling of the gas flow in fluidized beds
dc.type.degreeExamensarbete för masterexamensv
dc.type.degreeMaster Thesisen
dc.type.uppsokH
local.programmeInnovative sustainable energy engineering, MSc
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