One dimensional numerical simulation of small scale CFB combustors

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dc.authorid0000-0002-4245-7741
dc.contributor.authorGungor, Afsin
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2009
dc.departmentNiğde ÖHÜ
dc.description.abstractIn this study, a one-dimensional model which includes volatilization, attrition and combustion of char particles for a circulating fluidized bed (CFB) combustor has been developed. In the modeling, the CFB combustor is analyzed in two regions: bottom zone considering as a bubbling fluidized bed in turbulent fluidization regime and upper zone core-annulus solids flow structure is established. In the bottom zone, a single-phase back-flow cell model is used to represent the solid mixing. Solids exchange, between the bubble phase and emulsion phase is a function of the bubble diameter and varies along the axis of the combustor. In the upper zone. particles move upward in the core and downward in the annulus. Thickness of the annulus varies according to the combustor height. Using the developed simulation program, the effects of operational parameters which are the particle diameter, superficial velocity and air-to-fuel ratio on net solids flux, oxygen and carbon dioxide mote ratios along the bed height and carbon content and bed temperature on the top of the riser are investigated. Simulation results are compared with test results obtained from the 50 kW Gazi University Heat Power Laboratory pilot scale unit and good agreement is observed. (C) 2008 Elsevier Ltd. All rights reserved.
dc.identifier.doi10.1016/j.enconman.2008.10.003
dc.identifier.endpage722
dc.identifier.issn0196-8904
dc.identifier.issue3
dc.identifier.scopus2-s2.0-58649085483
dc.identifier.scopusqualityQ1
dc.identifier.startpage711
dc.identifier.urihttps://dx.doi.org/10.1016/j.enconman.2008.10.003
dc.identifier.urihttps://hdl.handle.net/11480/5081
dc.identifier.volume50
dc.identifier.wosWOS:000263708100036
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorGungor, Afsin
dc.language.isoen
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD
dc.relation.ispartofENERGY CONVERSION AND MANAGEMENT
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectCirculating fluidized bed
dc.subjectSimulation
dc.subjectModelling
dc.subjectNumerical analysis
dc.titleOne dimensional numerical simulation of small scale CFB combustors
dc.typeArticle

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