东华大学学报（英文版）2005，Vol.22Issue(1)：97-101,5.
A Revised CFB Wall-to-suspension Heat Transfer Model
A Revised CFB Wall-to-suspension Heat Transfer Model
摘要
Abstract
Based on the Cluster Renewal Model of the particle motion in a CFB riser, a revised heat transfer model is developed, which introduces the latest research results of the hydrodynamics of the suspension flow in CFB. This model divides the heat transfer into two parts, which are due to the transient heat conduction by the covered clusters and the convection between the uncovered wall and the dispersed phase. Radiation at high temperature is regarded as being additive. The fraction of the covered wall by clusters is revised by a new formula, which is a function of the operating condition and the particle properties. The radiation between the dispersed phase and the uncovered wall includes not only the direct radiation to the uncovered wall, but also the radiation to the clusters and then reflected to the uncovered wall. Calculation was carried out for the CFB heat transfer model. The results were compared with the published typical experimental data of other researchers and showed a good agreement between them.关键词
circulating fluidized bed/heat transfer model/cluster renewal model/modificationKey words
circulating fluidized bed/heat transfer model/cluster renewal model/modification引用本文复制引用
SU Ya-xin..A Revised CFB Wall-to-suspension Heat Transfer Model[J].东华大学学报（英文版）,2005,22(1):97-101,5.基金项目
Supported by the Project of Outstanding Young University Teachers of Shanghai, No.03YQHB076. and R & D Fund of Donghua University （）
