翅片管汽轮机油冷却器传热性能试验研究

发布时间：2017-12-28 01:18

本文关键词：翅片管汽轮机油冷却器传热性能试验研究　出处：《热能动力工程》2016年08期 　论文类型：期刊论文

【摘要】：用实验的方法研究了翅片管油冷却器的传热和流动阻力性能。试验管为肋化系数为10.6的高肋管。将实验结果与理论计算值进行比较,并根据威尔逊法及最小二乘法原理,得出了管外流体油和管内流体水的对流换热关系式、流动阻力关系式。结果表明:本试件以内表面计的传热系数达到了1 000~3 000 W/(m2℃),是光滑管的5~6倍,与具有相同壳体直径的光滑管油冷却器相比,节省了三分之二的换热体积。在相同换热器体积下,高肋管的管子布置量约是光滑管的60%左右,因此在相同换热器体积下高肋管的换热容量是光滑管的3~4倍。
[Abstract]:The heat transfer and flow resistance performance of the fin tube oil cooler are studied experimentally. The test tube is a high ribbed tube with a rib coefficient of 10.6. The experimental results are compared with the calculated values. According to the principle of the Wilson method and the least square method, the convection heat transfer equation and the flow resistance relation between the fluid and the fluid in the tube are obtained. The results show that the heat transfer coefficient of the inner surface of the specimen reaches 1 000~3 000 W/ (M2 C), which is 5~6 times of the smooth tube. Compared with the smooth tube oil cooler with the same shell diameter, it saves 2/3 of the heat transfer volume. Under the same heat exchanger volume, the layout of the high rib tube is about 60% of that of the smooth tube. Therefore, the heat transfer capacity of the high rib tube is 3~4 times of that of the smooth tube under the same heat exchanger volume.
【作者单位】：上海理工大学能源与动力工程学院;
【分类号】：TK124;TK261
【正文快照】： 引言汽轮机油冷却器是热力发电厂中的重要配套设备[1],其传热效能的高低已成为影响电厂中相关设备正常运行的重要因素。目前水冷壳管式油冷却器通常设计为水在冷却器的管内流动,油在管外的壳程流动。根据传热原理,换热器的换热量可表示为:Q=KAΔTm(1)要提高油冷却器的传热效能

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