Experimental Speed of Sound for 3,3,3-Trifluoropropene (R-1243zf) in Gaseous Phase Measured with Cylindrical Resonator

被引：16

作者：

Chen, Hongyu ^{[1
]}

Zhang, Kai ^{[1
,2
]}

Yang, Zhen ^{[1
]}

Duan, Yuanyuan ^{[1
]}

机构：

[1] Tsinghua Univ, Beijing Key Lab CO2 Utilizat & Reduct Technol, Minist Educ, Key Lab Thermal Sci & Power Engn, Beijing 100084, Peoples R China

[2] China Acad Launch Vehicle Technol, R&D Dept, Beijing 100076, Peoples R China

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2021年 / 66卷 / 05期

基金：

中国国家自然科学基金;

关键词：

VAPOR-PRESSURE; CONSTANT; EQUATIONS; STATE;

D O I：

10.1021/acs.jced.1c00098

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The speed of sound in 3,3,3-trifluoropropene (R-1243zf) in the gaseous phase has been measured using a fixed-path cylindrical resonator. The experiment was conducted along nine quasi-isochoric lines in the temperature range of (313 to 363) K and pressure range of (170 to 983) kPa. The speed of sound at 92 state points (p,T) was obtained from accurate measurements of resonant frequencies of seven acoustic modes. The overall relative expanded uncertainty at the confidence level of 0.95 in the speed of sound measurements is estimated to be 1.8 x 10(-4). The ideal-gas heat capacity at constant pressure for R-1243zf was determined over the temperature range from the speed of sound measurement with a relative expanded uncertainty (k = 2) of less than 0.5%, and the second acoustic virial coefficient was also derived. The temperature dependence of the ideal-gas heat capacity at constant pressure was correlated with a polynomial approximation relationship. The measured speed of sound and the derived ideal-gas heat capacities and second acoustic virial coefficient were also compared with calculations of the available equation of state of 3,3,3-trifluoropropene.

引用

页码：2256 / 2263

页数：8

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