Experimental investigation of heat transfer in a tube heat exchanger with airfoil-shaped insert

被引:15
|
作者
Gururatana, Suabsakul [1 ]
Skullong, Sompol [1 ]
机构
[1] Kasetsart Univ, Dept Mech Engn, Fac Engn Sriracha, Sriracha Campus, Sriracha 20230, Chonburi, Thailand
关键词
Insert; Heat exchanger; NACA0024; Heat transfer enhancement performance; VORTEX GENERATOR; PERFORMANCE; FLOW;
D O I
10.1016/j.csite.2019.100462
中图分类号
O414.1 [热力学];
学科分类号
摘要
In this present study, the novel insert for heat exchanger is presented. The airfoil-shaped insert, Modified NACA0024, is chosen to improve the heat transfer performance in the tube. This experiment is performed to study and investigate the thermal and fluid flow behaviors. The straight tape which Modified NACA0024 are mounted on the both sides generates the longitudinal vortices in the tube. The Reynolds number based on tube diameter of 4196 to 8125 are selected to be the desired test range. Main major parameter, inclination angle (IA = 0 degrees, 30 degrees and 45 degrees), is considered. The experimental investigation indicates that maximum values of heat transfer ratio, friction ratio, and heat transfer enhancement performance can be found at Reynolds number of 4196. The Modified NACA0024 with inclination angle of 45 degrees can present the best heat transfer augmentation approximately 3 times over the plain tube and the maximum heat transfer enhancement performance (HTEP) of 1.45.
引用
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页数:9
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