Design optimization, construction and testing of 2 K Joule-Thomson heat exchanger for a superfluid helium cryogenic system

被引：11

作者：

Han, Ruixiong ^{[1
,2
]}

Zou, Zhengping ^{[1
]}

Ge, Rui ^{[2
]}

Chang, Zhengze ^{[2
]}

Zhang, Jianqin ^{[2
]}

Xu, Miaofu ^{[2
]}

Ye, Rui ^{[2
]}

Zhu, Keyu ^{[2
]}

Zhang, Lei ^{[2
]}

Zhao, Tongxian ^{[2
]}

Sun, Liangrui ^{[2
]}

Zhang, Xiangzhen ^{[2
]}

Sang, Minjing ^{[2
]}

Li, Shaopeng ^{[2
]}

机构：

[1] Beihang Univ, Sch Energy & Power Engn, Beijing 100191, Peoples R China

[2] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

来源：

APPLIED THERMAL ENGINEERING | 2020年 / 180卷

关键词：

J-T heat exchanger; Helically finned-tube heat exchanger; 2 K superfluid helium cryogenic system; Design optimization; PERFORMANCE OPTIMIZATION; THERMAL PERFORMANCE; PRESSURE-DROP; ENTRANSY; FLOW; TUBE; PATTERN;

D O I：

10.1016/j.applthermaleng.2020.115774

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The performances of 2 K Joule-Thomson (J-T) heat exchanger are related to the operation efficiency and economy of the superfluid helium cryogenic system, and the helically finned-tube heat exchanger (HFHE) is designed and tested. Heat transfer characteristics of the HFHE are investigated by a finite difference analysis method, and the design optimization of the HFHE is performed by the orthogonal test and variance analysis method. Meanwhile, the influences of the geometrical parameters on the performances are discussed. The experimental investigation of the HFHE is carried out in the superfluid helium cryogenic system, and the performances of the HFHE are verified experimentally. The results are shown that the calculated performances of the HFHE cause by heat transfer are in reasonable agreement with the experimental results, which indicates that the thermal calculation model of the HFHE is more accurate. Moreover, the deviations of pressure drop of cold fluid between the calculation and measurement are analyzed and the friction factor is modified in this paper.

引用

页数：14

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