窄环形通道流体特性的实验研究  

Experimental Study on Fluid Characteristics in Narrow Annuli

作　　者：孙月秋[1,2] 仪登利[1] 闫郡庭[3] 

机构地区：[1]辽宁工业大学机械工程与自动化学院,辽宁锦州121001 [2]渤海船舶职业学院动力工程系,辽宁葫芦岛125000 [3]大连外国语学院软件学院,辽宁大连116044

出　　处：《辽宁工业大学学报（自然科学版）》2011年第6期380-382,共3页Journal of Liaoning University of Technology(Natural Science Edition)

摘　　要：采用套管式换热器,热水走管程,冷水走壳程,对间隙为0.50～2.50 mm,Re=0～5 000窄环形流道的流体进行了传热和阻力特性的实验研究。拟合出传热系数与雷诺数Re-K曲线。结果表明,窄环形流道结构紧凑,具有显著的强化传热效果,而且随着窄环形间隙尺寸的减小,传热系数增大。Heat exchanger of sleeve type was used in the experiment with hot water inside of tube and cold water outside of tube, For ring gap of 0,50 - 2.50 mm, Reynolds number ranging from 0 to 5000, the heat transfer and friction characteristics of the fluid of narrow annular channel were tested and studied in experiments. According to the result of the experiment, heat transfer coefficient and Reynolds number of function relation curve of Re-K were fitted. It was found that narrow ring channel has the remarkable strengthening effect with compact structure. As the narrow gap dimension decreases, the heat transfer coefficient increases.

关 键 词：窄环隙 传热系数 换热器 雷诺数 

分 类 号：TK21[动力工程及工程热物理—动力机械及工程]