循环流化床膜式壁传热试验与模型

MEMBRANE WALL HEAT TRANSFER IN A CIRCULATING FLUIDIZED BED AND ITS MODELING

本文研究循环流化中膜式壁的传热规律．采用电加热膜式壁传热测量元件试验研究了固体颗粒悬浮密度，膜式壁传热测板长度和空截面流化气速对传热系数的影响．对颗粒团壁面更新传热模型中的重要参数颗粒团壁面覆盖率进行探讨，提出适宜于循环流化床密相区和稀相区中的K、Y值．

Experimental results of solid suspension density, membrane wall length and superficial gas velocity on heat transfer coefficient of membrane wall in a circulating fluidized bed were reported. Based on cluster renewal heat transfer model, adaptive parameters K and Y were suggested for dense phase and dilute phase in the circulating fluidized bed.