Wall-to-bed heat transfer in circulating fluidized beds

被引：24
|
作者：
Shi, DM [1 ]
Nicolai, R [1 ]
Reh, L [1 ]
机构：
[1] Swiss Fed Inst Technol, Inst Proc Engn, CH-8092 Zurich, Switzerland
来源：
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION | 1998年 / 37卷 / 04期
关键词：
circulating fluidized bed; particle motion; wall-to-bed heat transfer coefficients;
D O I：
10.1016/S0255-2701(98)00039-7
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
An extensive series of measurements on wall-to-bed heat transfer coefficients, solids concentrations and solids velocities has been performed in a semi-industrial scale CFB unit running with a variety of solids fractions at ambient temperatures. Experiments have shown a significant influence of solids concentration and solids movement in the vicinity of the heat transfer surface on the wall-to-bed heat transfer coefficient. A model is proposed to describe the wall-to-bed heat transfer that is applicable over the entire range of possible local solids concentrations occurring in CFB systems. (C) 1998 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：287 / 293
页数：7
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