DC流对液氦温区斯特林型脉管制冷机的影响  

Effect of DC flow on a Stirling-type pulse tube cryocooler working around liquid helium temperature range

作　　者：韩磊[1,2,3] 邱利民[1,2] 甘智华[1,2] 黄宸[1,2] 夏曦[1,2] 植晓琴[1,2] Han Lei Qiu Limin Gan Zhihua Huang Chen Xia Xi Zhi Xiaoqin(Institute of Cryogenics and Refrigeration, Zhejiang University, Hangzhou 310027, China Key Laboratory of Refrigeration and Cryogenic Technology of Zhejiang Province, Hangzhou 310027, China College of Mechnical and Electrical Engineering, Wenzhou University, Wenzhou 325035 ,China)

机构地区：[1]浙江大学制冷与低温研究所,杭州310027 [2]浙江省制冷与低温技术重点实验室,杭州310027 [3]温州大学机电工程学院,温州325035

出　　处：《低温工程》2016年第5期1-4,共4页Cryogenics

基　　金：国家杰出青年科学基金项目(50825601)资助

摘　　要：理论研究表明DC流(Direct Current flow)存在于大多数双向进气结构的脉管制冷机中。开展了10 K以下多级斯特林脉管的实验研究,考察了在液氦温区斯特林脉管内直流流动对制冷机性能影响的规律。在采用双向进气结构对DC流流向及流量适当控制时,制冷机性能得到明显提升,在8—7 K温区适当的DC流下冷端由7.42 K降低至7.16 K。Previous numerical and experimental analysis show the effect of DC flow （Direct Current flow） in pulse tube cooler with double-inlet. This paper analyzes effect of DC flow on multi-stage pulse tube cryocooler with double inlet below 10 K. We have found that the proper DC flow control can enhance the performance and reduce the cold end temperature from 7.42 K to 7.16 K in 8--7 K temperature area.

关 键 词：脉管制冷机 回热器 损失 DC流液 氦温区 

分 类 号：TB651[一般工业技术—制冷工程]