A study on the effects of operational parameters on bed-to-wall heat transfer

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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 the effects of operational parameters on bed-to-wall heat transfer in CFBs are investigated such as solids volume fraction, particle diameter, suspension density, solid circulation rate. Based on a previously developed 2D CFB model, a modified cluster renewal model is used in this investigation. The model uses the particle-based approach (PBA) and integrates the hydrodynamics and combustion aspects. The study is also validated with experimental data. As a result of this study, it is observed that the bed-to-wall heat transfer coefficients are strongly dependent on particle diameter and solids concentration at the riser wall. The smaller particles result in higher heat transfer coefficients than larger particles for the same solids volume fraction values. The heat transfer coefficient increases with suspension density. However, at a constant suspension density, the superficial velocity does not have a significant influence on the heat transfer coefficient. PBA is satisfactorily adapted to cluster renewal model so that to define the bed-to-wall heat transfer mechanisms for the upper zone. (C) 2008 Elsevier Ltd. All rights reserved.
dc.identifier.doi10.1016/j.applthermaleng.2008.11.008
dc.identifier.endpage2288
dc.identifier.issn1359-4311
dc.identifier.issue45637
dc.identifier.scopus2-s2.0-64849112136
dc.identifier.scopusqualityQ1
dc.identifier.startpage2280
dc.identifier.urihttps://dx.doi.org/10.1016/j.applthermaleng.2008.11.008
dc.identifier.urihttps://hdl.handle.net/11480/5029
dc.identifier.volume29
dc.identifier.wosWOS:000269347000020
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorGungor, Afsin
dc.language.isoen
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD
dc.relation.ispartofAPPLIED THERMAL ENGINEERING
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectHeat transfer
dc.subjectCirculating fluidized bed
dc.subjectParticle diameter
dc.subjectSuspension density
dc.subjectModeling
dc.titleA study on the effects of operational parameters on bed-to-wall heat transfer
dc.typeArticle

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