污垢热阻动态监测装置及其传热计算方法的研究  

DEVELOPMENT OF ON-LINE MONITORING APPARATUS OF FOULING THERMAL RESISTANCE AND ITS CACULATION METHOD OF HEAT TRANSFER

作　　者：全贞花[1] 陈永昌[1] 王春明[1] 李兵[1] 马重芳[1] 

机构地区：[1]北京工业大学环境与能源工程学院"传热强化与过程节能"教育部重点实验室,北京100022

出　　处：《工程热物理学报》2007年第2期322-324,共3页Journal of Engineering Thermophysics

基　　金：国家"九七三"计划资助项目(No.G2000026304);北京市优秀人才培养资助项目(No.20061D0501500186)

摘　　要：介绍了污垢热阻动态监测装置的构成及特点．根据传热学基本原理,对该套装置进行了光滑管对流换热性能测试,结果表明两侧流体热平衡最大偏差小于10%,实验结果与经验公式计算的Nu数相吻合,其最大偏差小于10%．用该装置进行换热表面污垢的动态自动监测,可以得出准确可靠的实验结果．In this paper, an on-line mornitoring apparatus of fouling thermal resistance is introduced, including its structure and performance. Based on the fundamentals of heat transfer, heat transfer performance was tested using smooth tube. As a result, the heat balance deviations of two sides＇ water were no more than 10 percent. Experimental turbulent flow heat transfer Nusselt numbers agreed with the predicted values within 10%. Accordingly, the system is reliable to be used to monitor the fouling process of heat transfer surface

关 键 词：污垢热阻 动态监测 对流换热 

分 类 号：TQ314[化学工程—高聚物工业]