Numerical and experimental study on the falling film flow characteristics with the effect of co-current gas flow in hydrogen liquefaction process

被引：0

作者：

ChongZheng Sun ^{[1
]}

YuXing Li ^{[2
]}

Hui Han ^{[2
]}

XiaoYi Geng ^{[2
]}

Xiao Lu ^{[1
]}

机构：

[1] College of Energy Storage Technology, Shandong University of Science and Technology

[2] College of Pipeline and Civil Engineering/Shandong Provincial Key Laboratory of Oil & Gas Storage and Transportation Safety, China University of

来源：

Petroleum Science | 2024年 / 21卷 / 02期

关键词：

D O I：

暂无

中图分类号：

TK91 [氢能及其利用];

学科分类号：

080703 ;

摘要：

Liquid hydrogen storage and transportation is an effective method for large-scale transportation and utilization of hydrogen energy. Revealing the flow mechanism of cryogenic working fluid is the key to optimize heat exchanger structure and hydrogen liquefaction process(LH2). The methods of cryogenic visualization experiment, theoretical analysis and numerical simulation are conducted to study the falling film flow characteristics with the effect of co-current gas flow in LH2spiral wound heat exchanger.The results show that the flow rate of mixed refrigerant has a great influence on liquid film spreading process, falling film flow pattern and heat transfer performance. The liquid film of LH2mixed refrigerant with column flow pattern can not uniformly and completely cover the tube wall surface. As liquid flow rate increases, the falling film flow pattern evolves into sheet-column flow and sheet flow, and liquid film completely covers the surface of tube wall. With the increase of shear effect of gas-phase mixed refrigerant in the same direction, the liquid film gradually becomes unstable, and the flow pattern eventually evolves into a mist flow.

引用

页码：1369 / 1384

页数：16

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