【作者】 梁文清； 龚领会； 张亮；

【Author】 Liang WenQing Gong LingHui Zhang Liang (Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, China)

【机构】 中国科学院理化技术研究所；

【摘要】 新型换热器式G-M制冷机是一种新型的低温气体制冷机,采用高效间壁式换热器代替了回热器,由于回热器中的各种损失是限制G-M制冷机效率的主要因素,所以高效换热器的使用有可能提高G-M制冷机的整体效率。两股相位差为180°的压力波经换热器分别进入两个G-M制冷机的气缸,当一个气缸处于进气时间时,另一气缸正好处于排气时间,两股气流在高效间壁式换热器内交换冷量,从而避免了回热器的使用。本文将对这种新型制冷机的工作原理和特点展开阐述和分析,并对气缸中的活塞运动做计算模拟。更多还原

【Abstract】 Regenerators in standard GM refrigerators are expensive, complicated, heavy, and they contribute significantly to the losses in the cooler. In this research the regenerators are avoided by using two identical GM refrigerators operating in opposite phase. The two regenerators are replaced by one counter-flow heat exchanger. This system is called the counter-flow GM refrigerator. The basic principles of the processes in the counter-flow GM refrigerator are discussed and the relations of the movement of the piston and cooling power are also analyzed.更多还原