层流化元件对脉冲管制冷机性能影响的实验研究  

Experiment study on influence of flow straightener on pulse tube cryocooler performance

作　　者：王乃亮 赵密广[1] 陈厚磊[1] 梁惊涛[1,2] Wang Nailiang;Zhao Miguang;Chen Houlei;Liang Jingtao(Key Laboratory of Space Energy Conversion Technologies,Technical Institute of Physics and Chemistry Chinese Academy of Sciences, Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100190, China)

机构地区：[1]中国科学院理化技术研究所空间功热转换技术重点实验室,北京100190 [2]中国科学院大学,北京100049

出　　处：《低温工程》2018年第2期35-38,共4页Cryogenics

基　　金：国家基础研究发展计划(613322)

摘　　要：分析了射流对制冷机性能的影响机理,并设计了一种锥形挡片,将其作为同轴型脉冲管热端的层流元件。并通过实验研究了该层流元件与传统丝网式层流元件等对制冷机性能的影响规律。结果表明,合适的层流元件能够有效抑制射流,提高制冷机的效率。其中采用铜挡片与铜丝网组合的方式,层流化效果最好,制冷机性能最佳。该脉冲管制冷机在250 W输入电功下,最高可以获得11.2 W@80 K的制冷量。The influence of jet flow on performance of pulse tube cryocooler was presented,and a new conical flow straight plate was designed to be the flow straightener at the hot end of pulse tube. The effects of the new flow straightener and the copper mesh flow straightener were compared by experiments. Results indicated that a suitable flow straightener can dramatically increase the COP of cryocooler. Among these flow straighteners,the combination of mesh and plate was the best one to smooth the jet flow of pulse tube. In this case,the pulse tube has the highest cooling power,namely 11. 2W at 80K,with the electrical power of 250W.

关 键 词：脉冲管 层流化 射流 

分 类 号：TB651[一般工业技术—制冷工程]