【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．更多还原

【Abstract】 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更多还原