Design of an improved high cooling power 4 K GM cryocooler and helium compressor

Cryogenic Engineering Conference 2015

材料科学;物理学

Hao, X.H.^1

Advanced Research Systems, Inc., 7476 Industrial Parkway, Macungie

PA

18062, United States^1

关键词: Broad application;    Cooling performance;    Cooling power;    G-m cryocooler;    Helium compressors;    Low temperature superconductors;    Magnetic Resonance Imaging (MRI);    Operational conditions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/101/1/012135/pdf
DOI  :  10.1088/1757-899X/101/1/012135

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

High cooling power 4 K cryocoolers are in high demand given their broad applications in such fields as magnetic resonance imaging (MRI) and low temperature superconductors. ARS has recently designed and developed a high cooling power 4 K pneumatic-drive GM cryocooler which achieves a typical cooling power of 1.75 W/4.2 K. Steady input power of our newly developed helium compressor supplied to the cold head is 11.8 kW at 60 Hz. The operational speed of the cold head is 30 RPM. The effects of geometries and operational conditions on the cooling performance of this 4 K GM cryocooler are also experimentally tested.