Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7915520 | Cryogenics | 2018 | 8 Pages |
Abstract
In recent years, improved efficiency of pulse tube cryocoolers has been required by some space infrared detectors and special military applications. Based on this, a high efficiency single-stage coaxial pulse tube cryocooler which operates at 60â¯K is introduced in this paper. The cryocooler is numerically designed using SAGE, and details of the analysis are presented. The performance of the cryocooler at different input powers ranging from 100â¯W to 200â¯W is experimentally tested. Experimental results show that this cryocooler typically provides a cooling power of 7.7â¯W at 60â¯K with an input power of 200â¯W, and achieves a relative Carnot efficiency of around 15%. When the cooling power is around 6â¯W, the cryocooler achieves the best relative Carnot efficiency of around 15.9% at 60â¯K, which is the highest efficiency ever reported for a coaxial pulse tube cryocooler.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Nailiang Wang, Miguang Zhao, Yangyang Ou, Qianglong Zhu, Lingjiao Wei, Houlei Chen, Jinghui Cai, Jingtao Liang,