Study on Hydrogen Ortho-Para Conversion Coupled with Flow and Heat Transfer of the Plate Fin Heat Exchanger

被引：3

作者：

Xu P. ^{[1
]}

Wen J. ^{[1
]}

Li Y. ^{[1
]}

Wang S. ^{[2
]}

Tu J. ^{[3
]}

机构：

[1] School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an

[2] School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an

[3] School of Engineering, RMIT University, Melbourne, 3083, VIC

来源：

Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University | 2021年 / 55卷 / 12期

关键词：

Flow and heat transfer; Hydrogen liquefaction; Ortho-para conversion; Plate fin heat exchanger;

D O I：

10.7652/xjtuxb202112003

中图分类号：

学科分类号：

摘要：

In order to reveal the mechanism of hydrogen ortho-para conversion reaction coupled with flow and heat transfer in the catalyst filled micro-channel, based on the comparative analysis of the existing kinetic models of hydrogen ortho-para conversion, the process of hydrogen ortho-para conversion coupled with flow and heat transfer in a catalyst filled plain fin channel at 42-70 K temperature is investigated. Results show that the average relative error of the Elovich calculation model is 1.8%, which is the most consistent with the experimental data. Due to the effect of catalyst particles, the Colburn heat transfer factor on the hot side is 8-10 times that on the cold side, while the thermal enhancement factor on the hot side is close to that on the cold side. Therefore, the integrated equipment of hydrogen ortho-para conversion coupled with flow and heat transfer can ensure flow and heat transfer performance and realize continuous ortho-para conversion process. The volume fraction of para-hydrogen at the outlet is related to the mass space velocity. When the mass space velocity is less than or equal to 0.658 kg/(m3•s), the volume fraction of para-hydrogen at the outlet can meet the requirements. The research results provide a theoretical guidance for system performance optimization of large-scale hydrogen liquefaction units. © 2021, Editorial Office of Journal of Xi'an Jiaotong University. All right reserved.

引用

页码：16 / 24

页数：8

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