摘要
本文通过建立绝热模型,理论上分析了小孔型脉冲管制冷机内部气体微团的运动过程,定性地推导出了小孔型脉冲管制冷机冷端的相位差,以及冷端和热端的最大位移量。同时分析了频率、温度和小孔阻力对相位角和最大位移量的影响以及超高频下脉冲管制冷机冷头温度比一般高频制冷机高的原因。
Based on the adiabatic model,this paper studies the working process of gas parcel in the orifice pulse tube cryocooler theoretically,and acquires the expressions of the phase differences of cooler＇s cold head and the maximum displacement of gas parcel of cold and hot heads.In addition, the effect of frequency,temperature and orifice resistance on phase angle and maximum displacement are studied.This partly explains the reason of higher temperature for ultra high frequency than that of normal high frequency.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2010年第4期557-560,共4页
Journal of Engineering Thermophysics
基金
国家自然科学基金(No.50676100)
国家自然科学重大基金(No.50890181)
关键词
超高频
脉冲管制冷机
最大位移
相位角
extra-high frequency
pulse tube
maximum displacement
phase difference
