摘要
在考虑２０Ｋ以下温区氦流体热物性特点的基础上，本文建立了液氦温区脉管制冷机的绝热模型，用以研究液氦温区双向进气型脉管制冷机的动态工作过程及其制冷机理，为开展液氦温区多级脉管制冷机的实验研究提供了理论依据。
On the base of consideration of real fluid properties of helium,an adiabatic model was proposed to study the detailed fluid dynamics within the pulse tube.Attention was drawn to the calculated system including the low temperature stage pulse tube,heat exchangers and phase shifters of the same stage.Compared with the conventional numerical model,the adiabatic model is simple and can be easily used.Numerical predictions also reveal the energy transportation in the pulse tube.
出处
《低温工程》
CAS
CSCD
北大核心
1997年第6期8-13,共6页
Cryogenics
基金
国家自然科学基金
关键词
脉管制冷机
绝热模型
液氦温区
制冷机
pulse tube refrigerator
adiabatic model
liquid helium temperature
