Study on heat transfer characteristics of plate-fin heat exchanger based on joint simulation

被引：0

作者：

Cao X. ^{[1
]}

Shi Q. ^{[1
]}

Bian J. ^{[1
]}

Guo D. ^{[1
]}

Li Y. ^{[1
]}

机构：

[1] College of Pipeline and Civil Engineering in China University of Petroleum(East China), Qingdao

来源：

Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science) | 2020年 / 44卷 / 03期

关键词：

Flow distribution; Heat transfer; Joint simulation; Natural gas; Plate-fin heat exchanger;

D O I：

10.3969/j.issn.1673-5005.2020.03.017

中图分类号：

学科分类号：

摘要：

In order to obtain the flow field and flow distribution characteristics in the overall structure of plate-fin heat exchanger, the flow and heat transfer modules in the MATLAB and FLUENT computational models in the joint simulation are adopted. Taking the natural gas as an example under the condition that the pressure and temperature fields are coupled, the influence of internal flow distribution characteristics on the heat transfer in the plate-fin heat exchanger is analyzed. The results show that the uneven distribution of outlet temperature in the plate-fin heat exchanger is more serious due to the uneven flow distribution. When the phase change does not occur on the natural gas side, the density would increase by about 10%, the dynamic viscosity would decrease by 13%, the surface heat transfer coefficient would increase by about 1.9 times, and the calculated micro-element pressure drop would increase by about 3.5 times due to the variation of temperature and pressure. Moreover, the small mass flow and large mass flow in the plate-fin heat exchanger due to uneven flow distribution will cause the decrease of the heat transfer efficiency, resulting in the insufficient utilization of heat transfer area or the failure of natural gas to cool to the ideal temperature. © 2020, Editorial Office of Journal of China University of Petroleum(Edition of Natural Science). All right reserved.

引用

页码：148 / 154

页数：6

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