Solid particle convection models in the dense phase of fluidized bed
CHAO Junnan
LYU Junfu
YANG Hairui
WANG Peng
DONG Weiguo
ZHANG Keda
Abstract：In order to grasp heat transfer rule at the surface of active particles in dense phase of fluidized bed,the research progress of the solid particle convective heat transfer models including the packet model,the single particle and two particle models,the variable property model and the surface resistance model were presented. The development direction of these models in application are proposed. The solid particle convective heat transfer coefficient could be predicted using the packet model when the fluidization velocity was relatively low. with some proper assumptions,the other three models were proposed as complements for the cases under higher fluidization velocities. However, the reliability of these models still need further verification. The applicability of present models under different operating conditions should be extended and further experimental investigations were needed to verify the form of the models and determine unknown parameters in the models.
Keywords：fluidized bedcoal combustionsolid particle convective heat transferphysical model
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 25-29,34 )