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Convective Heat and Mass Transfer Modeling in Gas‐Fluidized Beds
Author(s) -
Yusuf R.,
Melaaen M. C.,
Mathiesen V.
Publication year - 2005
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.200407014
Subject(s) - mass transfer , heat transfer , convection , convective heat transfer , mechanics , thermodynamics , fluidized bed , churchill–bernstein equation , combustion , chemistry , nusselt number , physics , organic chemistry , reynolds number , turbulence
This review examines selected mechanistic and empirical models reported in the literature to predict convective heat and mass transfer coefficients in gas‐fluidized beds. The role of hydrodynamics in heat and mass transfer is briefly outlined before embarking on the modeling approaches. Both bed to wall and interphase heat transfer, are considered. In bed to wall heat transfer, the main focus of the review is the modeling of particle convective components, based on surface renewal. The concepts of transient and local heat transfer models are also discussed briefly. In the case of mass transfer, only interphase transfer is considered. Emphasis is placed on models based on combustion where mass transfer is seen to occur from a few active particles contained in a fluidized bed of inert particles.