微粒污垢剥蚀机制研究  

INVESTIGATION OF THE REMOVAL MECHANISM OF PARTICULATE FOULING

作　　者：徐志明[1] 王建国[1] 杨善让[1] 赵晓彤[1] 陈福[1] 

机构地区：[1]东北电力学院动力工程系,吉林132012

出　　处：《工程热物理学报》1998年第5期611-615,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金

摘　　要：本文分析了微粒污垢的形成过程，研究了其剥蚀机制，解释了出现污垢诱导期的原因，并重新定义了微粒污垢的诱导期．利用湍流猝发理论导出了一个新的微粒污垢分析模型，该模型的特点是以易测参数表示污垢热阻．在实验室进行了气侧微粒污垢的实验研究。积累了必要的微粒污垢数据并验证了分析模型的正确性．This paper investigates particulate fouling removal mechanisms, explains the cause for the formation of the phenomenon of the induction step, redefines initiation of fouling, and develops a predictive model of particulate fouling by means of turbulent burst theory. The new model makes a feature of expressing the fouling thermal resistance in terms of easily measurable parameters. The predicted results by the predictive model derived in this paper agree reasonably with the experimental data on ash-air.

关 键 词：换热器 微粒污垢 分析模型 剥蚀机制 

分 类 号：TK172[动力工程及工程热物理—热能工程] TK124