摘要
对一台小孔型脉冲管制冷机内部动态流动过程进行了系统的实验研究。在准确测量脉冲管制冷机蓄冷器热端和脉冲管热端的压力波和速度波曲线的基础上 ,对其进行傅里叶分析 ,得到波动曲线的基本参数 ,包括幅值和相位等。系统研究了各种条件和工况 (包括运行频率、充气压力、小孔开度、压缩机出口压比等 )对脉冲管制冷机内部压力波和速度波的幅值与相位的影响规律。实验结果对于脉冲管制冷机的机理理解、设计和调试有着重要的意义。
In this paper the pressure and velocity performance in an orifice pulse tube refrigerator are measured in a carefully designed apparatus to simulate actual operation of cryocoolers. The effect of the operating frequency, the orifice setting, the system mean pressure and pressure radio in warm-end of regenerator on the amplitude and phase difference of dynamic pressure and velocity is discussed. It is very useful to understand the operating mechanism in a pulse tube refrigerator.
出处
《低温工程》
CAS
CSCD
北大核心
2004年第4期18-21,31,共5页
Cryogenics
基金
国家自然科学基金 (5 0 2 0 6 0 2 5 )资助
