Experimental study on heat transfer enhancement of a helically baffled heat exchanger combined with three-dimensional finned tubes

被引：79
|
作者：
Zhang, ZG [1 ]
Xu, T [1 ]
Fang, XM [1 ]
机构：
[1] S China Univ Technol, Key Lab Enhanced Heat Transfer & Energy Conservat, Minist Educ, Guangzhou 510640, Peoples R China
来源：
APPLIED THERMAL ENGINEERING | 2004年 / 24卷 / 14-15期
基金：
中国国家自然科学基金;
关键词：
enhanced heat transfer; helical baffle; petal-shaped finned tube;
D O I：
10.1016/j.applthermaleng.2004.01.012
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Heat transfer and pressure drop of helically baffled heat exchanger combined with petal-shaped finned tubes for oil (ISO VG-32) cooling with water as coolant was experimentally studied. The tube side heat transfer coefficient was obtained by a modified Wilson plot technique. Results were presented as plots of the shell side heat transfer coefficient based on the actual outside surface area of tube bundle and pressure drop against volumetric flow rate of oil. Under experimental conditions, the maximum shell side heat transfer coefficient is 2265 W/m(2) K, the corresponding shell side pressure drop is 91 kPa. The preliminary heat transfer enhancement mechanisms were discussed for oil flow helically on outside surface of petal-shaped finned tubes. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2293 / 2300
页数：8
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