Two-stage pulse tube refrigerator with step displacer as phase shifter

Cryogenic Engineering Conference 2015

材料科学;物理学

Zhu, Shaowei^1

Institute of Refrigeration and Cryogenics, School of Mechanical Engineering, Tongji University, 4800, Cao'an Road, Shanghai

201804, China^1

关键词: Displacers;    Phase angle differences;    Pulse tube refrigerators;    Pulse tubes;    Swept volume;    Two-stage;    Work distribution;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/101/1/012183/pdf
DOI  :  10.1088/1757-899X/101/1/012183

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A two-stage pulse tube refrigerator with step displacer is discussed by numerical simulation. There is an optimum swept volume ratio of displacer over compressor and optimum phase angle difference between the displacer and the compressor. The volume of connecting tube between the pulse tube and the displacer can be used as a parameter to separate the mixing of the phase shifter effect and work distribution effect of the step displacer.