翼型
NACA翼型
鳍
材料科学
压力降
传热
机械
强化传热
结构工程
工程类
雷诺数
传热系数
湍流
复合材料
物理
作者
Fei Chen,Lishen Zhang,Xiulan Huai,Jufeng Li,Hang Zhang,Zhigang Liu
标识
DOI:10.1016/j.nucengdes.2017.02.014
摘要
Printed circuit heat exchanger (PCHE) can be used in supercritical carbon dioxide (S-CO2) Brayton cycle. The present study compares NACA 0020 airfoil fin PCHE with conventional zigzag PCHE by numerical analysis. Pressure drop of the former has a striking reduction while maintaining excellent heat transfer performance. Comparison on four NACA 00XX series airfoil fin PCHEs is performed to investigate the influence of airfoil profile on flow and heat transfer performance. With a fixed vertical pitch, heat transfer performance of NACA series airfoil fin PCHE increases as airfoil thickness increases. However, comprehensive performance, in which both flow and heat transfer are taken into account, degrades with increasing airfoil thickness. Among four NACA airfoil fin PCHEs presented in this paper, NACA 0010 airfoil fin PCHE demonstrates the best comprehensive performance.
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