Sensitivity analysis for performance of a new gas-liquid distributor used in plate fin heat exchangers

被引：0

作者：

Li, Yan ^{[1
]}

Li, Yuxing ^{[1
]}

Hu, Qihui ^{[1
]}

Wang, Wuchang ^{[1
]}

Xie, Bin ^{[2
]}

Yu, Xichong ^{[2
]}

机构：

[1] College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao 266580, Shandong

[2] CNOOC Research Center

来源：

Huagong Xuebao/CIESC Journal | 2013年 / 64卷 / 06期

关键词：

Flow distribution; Gas-liquid distributor; Maldistribution; Numerical simulation; Plate fin heat exchanger;

D O I：

10.3969/j.issn.0438-1157.2013.06.015

中图分类号：

学科分类号：

摘要：

Flow maldistribution is the major factor that influences the heat exchange efficiency of plate fin heat exchangers(PFHEs). By the traditional gas-liquid distribution method with mixing prior to distribution, the gas-liquid separation will occur due to the direction change in the distributing fins, which may lead to flow maldistribution. To solve this problem, a new gas-liquid distributor based on the concept with distribution prior to mixing is proposed. The gas and liquid flow into their respective channels and mix uniformly in the distributor, and then the gas/liquid mixture flows into the heat exchanger to exchange heat with materials with high temperatures. The calculation results show that the non-uniformity of flow distribution rises increases with flow rate, and the flow rate of liquid phase has greater influence on the flow distribution than that of gas phase. In addition, the standard deviation of the distributor is one magnitude lower than that of the header. The distributor can obviously improve the gas-liquid flow uniformity in PFHEs and increase their heat exchange efficiency.

引用

页码：2007 / 2014

页数：7

共 16 条

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