微粒污垢的特性分析  

Charateristics analysis of the particulate fouling

作　　者：甘云华[1] 徐志明[1] 杨善让[1] 王升龙[1] 

机构地区：[1]东北电力学院节能及测控技术研究中心,吉林吉林132012

出　　处：《热科学与技术》2002年第2期109-112,共4页Journal of Thermal Science and Technology

基　　金：吉林省科技发展计划项目 (2 0 0 10 5 72 ) ;吉林省教育厅科研计划项目 (JYT2 0 0 10 2 6)

摘　　要：利用微粒污垢的一个预测模型 ,结合实验结果 ,研究了管壳式换热器管内微粒污垢的积聚特性。考察了颗粒质量分数、颗粒直径和流体速度对渐近污垢热阻的影响。提出了大、中。By using a predictive model for particulate fouling, and combining with experimental results, the accumulation characteristic of particulate fouling in a tube and shell heat exchanger was investigated. The effects of fluid velocity, particle diameter, and bulk particle concentration on the asymptotic fouling resistance were also studied. At the same time, the reference values of the dimension limits of big, middle, small and unknown particle were suggested in this paper.

关 键 词：微粒污垢 换热器 渐近污垢热阻 尺寸界限 颗粒直径 流体速度 

分 类 号：TK172[动力工程及工程热物理—热能工程]