Numerical study on hydrodynamic characteristics of plate-fin heat exchanger using porous media approach

被引：48

作者：

Wang, Weiping ^{[1
]}

Guo, Jinxing ^{[1
]}

Zhang, Shuwen ^{[2
]}

Yang, Jian ^{[1
]}

Ding, Xianting ^{[3
]}

Zhan, Xuehua ^{[2
]}

机构：

[1] Zhejiang Univ, Inst Proc Equipment, Hangzhou 310027, Zhejiang, Peoples R China

[2] Hangzhou Hangyang Co Ltd, Hangzhou 310014, Zhejiang, Peoples R China

[3] Shanghai Jiao Tong Univ, Sch Biomed Engn, Med Res Inst 10, Shanghai 200240, Peoples R China

来源：

COMPUTERS & CHEMICAL ENGINEERING | 2014年 / 61卷

基金：

中国国家自然科学基金;

关键词：

Computational fluid dynamics; Flow distribution; Perforated fins; Plate-fin heat exchanger; Porous media; FLOW MALDISTRIBUTION; CFD SIMULATION; CONFIGURATION; HEADER;

D O I：

10.1016/j.compchemeng.2013.10.010

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

A numerical plate-fin heat exchanger (PFHE) model was proposed to investigate the hydrodynamic characteristics of a full-size PFHE by using the porous media approach. Based on the model, effects of the fluid dynamic viscosity and perforated fins on flow distribution and pressure drop of the PFHE were studied. The results showed that flow distribution of the PFHE was improved by increasing the fluid dynamic viscosity or adding perforated fins in each fin channel, but at the cost of an increased pressure drop. Therefore, the relationship between flow distribution and pressure drop was further analyzed under various Reynolds numbers. Based on the results, a correlation among flow distribution, pressure drop, and Reynolds number was derived. Finally, two strategies, the fin channel-based strategy and the header-based strategy were proposed and numerically verified to improve flow distribution of the PFHE. Our results indicate that the first strategy is better than the latter one. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：30 / 37

页数：8

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