SPEED-OF-SOUND MEASUREMENT IN GASEOUS PHASE FOR NOVEL REFRIGERANTS BY USING A SPHERICAL RESONATOR
The speed-of-sound in the gaseous phase for hydrofluoroolefin refrigerants was measured on the basis of the acoustic resonance method using a spherical cavity. The speed-of-sound can be determined by measuring the resonant frequency response in the spherical resonator. By correcting some perturbations such as the thermal boundary layer and the deformation of the spherical cavity, an expanded relative uncertainty of the speed-of-sound measurements is estimated to be 0.01 ％. Based on the measured speed-of-sound data, the acoustic-virial equation was formulated and the isobaric ideal-gas heat capacity was determined with an expanded relative uncertainty of 0.1 ％.
Yuya Kano Yohei Kayukawa Kenichi Fujii Haruki Sato
National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba, Japan, 3058563 Department of System Design Engineering Keio University Yokohama, Japan, 2238522
国际会议
The Ninth Asian Thermophysical Properties Conference(第九届亚洲热物理性能会议 ATPC 2010)
北京
英文
154-157
2010-10-19（万方平台首次上网日期，不代表论文的发表时间）