循环流化床的传热机理——颗粒絮团更新模型

Heat Transfer Mechanism in Circulating Fluidized Beds —— Cluster Renewal Model

本文论述了循环流化床的传热机理——颗粒絮团更新模型。对不同来源模型中的壁面被颗粒絮团覆盖的面积分率、颗粒絮团在壁面的滞留时间以及颗粒絮团与壁面间的气膜厚度等关键参数的计算和设定进行了分析。对比了各模型的预测精度。

A discussion about the heat transfer mechanism in circulating fluidized beds, the cluster renewal models, is carried out. An analysis is conducted on the calculations and postulations of the key parameters (e.g. the fractional wall coverage by clusters, time of contact between cluster and wall, etc) in the models from different researchers. The accuracies of the predicted results are compared.