An indirect method for measurement of inertance tube impedance

作者：Yu Li Hong^*; Wang Xiao Tao; Dai Wei; Zhao Rui Dong; Luo Er Cang; Gao Bo

来源：Journal of Engineering Thermophysics, 2012, 33(2): 203-206.

• Different frequency
• Direct measurement
• Indirect methods
• Inertance tube
• Inlet pressures
• Linear compressors
• Pulse tube coolers
• Pulse tubes
• Swept volume

The inertance tube is an important component of the pulse tube cooler, which must provide appropriate impedance amplitude and phase at the hot end of pulse tube. It is still difficult for direct measurement of the impedance through experiments. In this paper, an indirect method is introduced. Using a linear compressor to drive the inertance tube, the impedance could be deduced through measurement of the piston swept volume due to the interaction between compressor dynamics and the tube impedance. A series of experiments with different frequencies, inlet pressure wave amplitudes and reservoirs have been done. The results have also been compared with calculations based on DeltaEC software, which shows relatively good agreement.

• 出版日期2012
• 单位中国科学院大学