SOUND-VELOCITY AND IDEAL-GAS SPECIFIC-HEAT OF GASEOUS 1,1,1,2-TETRAFLUOROETHANE (R134A)

被引：9

作者：

ZHU, MS ^{[1
]}

HAN, LZ ^{[1
]}

ZHANG, KZ ^{[1
]}

ZHOU, TY ^{[1
]}

机构：

[1] TSING HUA UNIV,DEPT PHYS,BEIJING 100084,PEOPLES R CHINA

来源：

INTERNATIONAL JOURNAL OF THERMOPHYSICS | 1993年 / 14卷 / 05期

关键词：

ACOUSTIC INTERFEROMETER; 1,1,1,2 TETRAFLUOROETHANE; R134A; SOUND VELOCITY; SPECIFIC HEAT;

D O I：

10.1007/BF00505674

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A cylindrical, variable-path acoustic interferometer operating at 156.252 kHz is developed for determining ideal-gas specific heats. Results of validation measurements with argon are very satisfactory, with the maximum deviation of the speed of sound equal to 3 x 10(-4). The sound velocity of gaseous R134a has been measured at low temperatures and low pressures. The specific heat was then calculated from the results. The experimental results corrected for various dispersions for the sound velocity of gaseous R134a match well with an earlier publication, with a room mean square deviation of 2.56 x 10(-4). A new relation for the ideal-gas specific heat as a function of temperature for R134a is obtained.

引用

页码：1039 / 1050

页数：12

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