Acoustic impedance measurements of pulse tube refrigerators

被引：11
|
作者：
Iwase, Takashi [1 ]
Biwa, Tetsushi [1 ]
Yazaki, Taichi [2 ]
机构：
[1] Tohoku Univ, Dept Mech Syst & Design, Sendai, Miyagi 9808579, Japan
[2] Aichi Univ Educ, Dept Phys, Kariya, Aichi 4488542, Japan
来源：
JOURNAL OF APPLIED PHYSICS | 2010年 / 107卷 / 03期
关键词：
acoustic impedance; pressure measurement; refrigeration; refrigerators; velocity measurement;
D O I：
10.1063/1.3296225
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Complex acoustic impedance is determined in a prototype refrigerator that can mimic orifice-type, inertance-type, and double inlet-type pulse tube refrigerators from simultaneous measurements of pressure and velocity oscillations at the cold end. The impedance measurements revealed the means by which the oscillatory flow condition in the basic pulse tube refrigerator is improved by additional components such as a valve and a tank. The working mechanism of pulse tube refrigerators is explained based on an electrical circuit analogy.
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页数：6
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