THERMODYNAMIC PROPERTIES OF 2 GASEOUS HALOGENATED ETHERS FROM SPEED-OF-SOUND MEASUREMENTS - DIFLUOROMETHOXY-DIFLUOROMETHANE AND 2-DIFLUOROMETHOXY-1,1,1-TRIFLUOROETHANE

被引：39

作者：

GILLIS, KA

机构：

[1] Thermophysics Division, National Institute of Standards and Technology, Gaithersburg, 20899, Maryland

来源：

INTERNATIONAL JOURNAL OF THERMOPHYSICS | 1994年 / 15卷 / 05期

关键词：

2-DIFLUOROMETHOXY-1,1,1-TRIFLUOROETHANE; DIFLUOROMETHOXY-DIFLUOROMETHANE; E134; E245; HEAT CAPACITY; SPEED OF SOUND;

D O I：

10.1007/BF01447097

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

We present measurements of the speed of sound in gaseous difluoromethoxydifluoromethane (CHF2-O-CHF2) and 2-difluoromethoxy-1,1,1-trifluoroethane (CF3-CH2-O-CHF2). These measurements were performed in an all-metal apparatus between 255 and 384 K. We have obtained ideal-gas heat capacities and second acoustic virial coefficients from analysis of these measurements. Two methods of correlating the second acoustic virial coefficients, a square well model of the intermolecular interaction and a function due to Fitter and Curl, are presented.

引用

页码：821 / 847

页数：27

共 30 条

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BOYES S, COMMUNICATION

[2] HEAT-CAPACITIES AND 2ND VIRIAL-COEFFICIENTS FOR GASEOUS METHANOL DETERMINED FROM SPEED-OF-SOUND MEASUREMENTS AT TEMPERATURES BETWEEN 280-K AND 360-K AND PRESSURES FROM 1.03-KPA TO 80.5-KPA [J].