40-80K温区高频脉冲管制冷机的实验研究  

EXPERIMENTAL STUDY OF 40-80 K HIGH FREQUENCY PULSE TUBE COOLERS

作　　者：王国平[1,2] 梁惊涛[1] 靖葳[1] 王希龙[1,2] 蔡京辉[1] 周远[1] 

机构地区：[1]中国科学院理化技术研究所 [2]中国科学院研究生院,北京100039

出　　处：《工程热物理学报》2005年第5期736-738,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.50206025)

摘　　要：随着高频脉冲管制冷机性能的不断改善,特别是在红外和超导应用方面已进入实用化阶段,需要对蓄冷器和压缩机作进一步研究,探索高频脉冲管制冷机的工作机理,优化制冷机的整机设计。本文介绍了一台斯特林型高频单级脉冲管制冷机,经过优化设计,最低制冷温度达到了33 K,在40 K有420 mW的制冷量,当输入电功率为200W时,在80 K有4.5W的制冷量。文中针对压缩机效率在40-80 K温区随工作频率变化的曲线关系,指出了制冷机和压缩机的耦合问题是研究脉冲管制冷机的重点与难点。并分析了制冷机内部各种阻力损失和热损失随压缩机运行频率变化的原因。Along with the commercialization of HTS devices in fields such as mobile communications and the development of far infrared devices for space and military applications. In this paper, a set of experiment equipments and the experiment results of an U-shaped single-stage high frequency pulse tube refrigerator are introduced. The U-shaped PTC has reached a minimum no-load temperature of 33 K, and a cooling power of 420 mW at 40 K with operating frequency of 33Hz at an electrical input power of 250 W to the compressor. A cooling of 4.5 W at 80 K is available with 200 W of input power with operating frequency of 40 Hz. The operating frequency is varied from 33 Hz to 50 Hz. Experimental results show that at a specific temperature, the compressor exists a optimization operating frequency. It can be obtained higher efficiency at the optimization operating frequency.

关 键 词：脉冲管制冷机 高频 耦合 

分 类 号：TK123[动力工程及工程热物理—工程热物理]