无油浮动涡旋压缩机驱动液氦温区JT制冷机实验研究  

Experimental study on an oil-free floating scroll-type compressor driving a precooled JT cryocooler working at liquid helium temperature

作　　者：申运伟 刘东立 刘磊[1] 邱长煦 陈舒航 李睿泽 仇旻 甘智华[1,4] Shen Yunwei;Liu Dongli;Liu Lei;Qiu Changxu;Chen Shuhang;Li Ruize;Qiu Min;Gan Zhihua(Key Laboratory of Refrigeration and Cryogenic Technology of Zhejiang Province,Institute of Refrigeration and Cryogenics,Zhejiang University,Hangzhou 310027,China;Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province,School of Engineering,Westlake University,Hangzhou 310024,China;Institute of Advanced Technology,Westlake Institute for Advanced Study,Hangzhou 310024,China;Department of Mechanical Engineering,Zhejiang University City College,Hangzhou 310015,China)

机构地区：[1]浙江省制冷与低温技术重点实验室,浙江大学制冷与低温研究所,杭州310027 [2]西湖大学工学院浙江省3D微纳加工和表征研究重点实验室,杭州310024 [3]浙江西湖高等研究院前沿技术研究所,杭州310024 [4]浙江大学城市学院工程学院机电系,杭州310015

出　　处：《低温工程》2021年第3期1-5,共5页Cryogenics

基　　金：国家自然科学基金(No.51806199,61927820);中国博士后科学基金(2020M671814)资助。

摘　　要：为验证无油浮动涡旋压缩机驱动液氦温区JT制冷机的可行性,搭建了闭式液氦温区JT制冷机实验平台,开展了降温实验,实现了液氦温区制冷。通过调节压缩机背压,在压比为9.57时优化得到浮动涡旋压缩机的效率为8.65%,此时制冷机可在4.4 K提供24.0 mW制冷量。In order to study the feasibility of an oil-free floating scroll-type compressor driving the JT cryocooler working at liquid helium temperature,a closed-cycle JT cryocooler experiment setup is built up.Cooling down experiment was carried out and liquid helium temperature was achieved.By adjusting the back pressure of the compressor,the optimized exergetic efficiency is 8.65%when the pressure ratio is 9.57.Meanwhile,the JT cryocooler provides a cooling capacity of 24.0 mW at 4.4 K.

关 键 词：无油浮动涡旋压缩机 JT制冷机 液氦温区 实验 

分 类 号：TB651[一般工业技术—制冷工程]