Experimental study on a simplified precooled JT cryocooler for liquid hydrogen zero boil-off storage

被引：8
|
作者：
Shen, Yunwei [1 ]
Liu, Dongli [2 ,3 ]
Liu, Lei [4 ]
Qiu, Changxu [4 ]
Zhuan, Rui [5 ]
Gan, Zhihua [1 ,4 ]
机构：
[1] Zhejiang Univ City Coll, Cryogen Ctr, Hangzhou 310015, Zhejiang, Peoples R China
[2] Westlake Univ, Sch Engn, Key Lab 3D Micro Nano Fabricat & Characterizat Zhe, Hangzhou 310024, Zhejiang, Peoples R China
[3] Inst Adv Technol, Westlake Inst Adv Study, Hangzhou 310024, Zhejiang, Peoples R China
[4] Zhejiang Univ, Inst Refrigerat & Cryogen, Key Lab Refrigerat & Cryogen Technol Zhejiang Prov, Hangzhou 310027, Zhejiang, Peoples R China
[5] Shanghai Inst Aerosp Syst Engn, Shanghai 201109, Peoples R China
来源：
APPLIED THERMAL ENGINEERING | 2022年 / 216卷
基金：
中国国家自然科学基金;
关键词：
Liquid hydrogen storage; Simplified JT cryocooler; Liquid hydrogen temperature; Large cooling capacity; Experiment; CHALLENGES; COOLERS;
D O I：
10.1016/j.applthermaleng.2022.119087
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
For a hydrogen zero boil-off storage system in space, active cooling technique is one of the key technologies that requires effective cryocoolers. The precooled Joule-Thomson (JT) cryocooler working at liquid hydrogen tem-perature has no moving parts at low temperature with continuous refrigeration, making it reliable for space applications. In this study, a new simplified JT cryocooler with a large cooling capacity is proposed to approach liquid hydrogen refrigeration. In order to clarify cooling capacity characteristics of the simplified JT cryocooler, a laboratory prototype precooled by a Gifford-Mcmahon (GM) cryocooler is designed, fabricated and tested. The cool-down process of the simplified JT cryocooler is presented. A stable cooling capacity of 10.06 W at 20.7 K is provided by the cryocooler. The availability of the simplified JT cryocooler without a bypass assembly is verified.
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页数：5
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