500mW/4.2K双级G—M型制冷机的实验研究

• 作 者: 龚领会 徐向东 张靖 傅伟纯 张亮
• 机 构: 中国科学院低温技术实验中心!北京,100080,中国科学院低温技术实验中心!北京,100080,中国科学院低温技术实验中心!北京,100080,中国科学院低温技术实验中心!北京,100080,中国科学
• 出 处: 工程热物理学报
• 发表日期: 1997年01期
• 关键词: W/4.2K 制冷量 双级 磁性蓄冷材料 蓄冷 温区 液氦 制冷系数 操作频率 制冷温度

This paper describes the design principle and test results of a two-stage G-M refrigerator with lowest refrigerating temperature of 3.0K and cooling capacity of 0.5W and 4.3W at 4.2K and 10.0K respectively. The main points of the successful development of this prototype are following:1. Using ErNi2 as regenerator matrix in second stage.2. Properly designing the structure of 2-stage regenerator according to the results of the numerical calculation.3. Properly designing the structure of the heat exchanger in cold head after carefullyanalysizing it.

This paper describes the design principle and test results of a two-stage GM refrigerator with the lowest refrigerating temperature of 3.0K and cooling capacity of 0.5W and 4.3W at 4.2K and 10.0K respectively. The main points of the successful development of this prototype Properly designing the structure of 2-stage regenerator according to the results of the numerical calculation. 3 Properly designing the structure of the heat exchanger in cold head after carefullyanalysizing it .