Gaseous pVTx measurements for (HFC134a + HC290) by a compact single-sinker densimeter. (February 2015)

• Record Type: Journal Article
• Authors: Zhang, Haiyang; Gong, Maoqiong; Li, Huiya; Guo, Hao; Dong, Xueqiang; Wu, Jianfeng
• Is Part Of: Journal of chemical thermodynamics. Volume 81(2015:Feb.)
• Page Start: 60
• Page End: 65
• Publication Date: 2015-02
• Subjects: HFC134a + HC290 -- pVTx -- Single-sinker densimeter -- Virial equation of state; Thermodynamics -- Periodicals; Thermochemistry -- Periodicals; Thermodynamique -- Périodiques; Thermochimie -- Périodiques; Thermochemistry; Thermodynamics; Periodicals; 541.369
• DOI: 10.1016/j.jct.2014.10.001
• Languages: English
• ISSNs: 0021-9614

Abstract

Highlights: Gaseous pVTx properties for (HFC134a + HC290) mixtures were measured. Measurements were carried out by a compact single-sinker densimeter. Gaseous pVTx data were correlated using a truncated virial equation of state. Abstract: Comprehensive gaseous pVTx measurements for {1, 1, 1, 2-tetrafluoroethane (HFC134a) + propane (HC290)} were carried out by a compact single-sinker densimeter, based on the Archimedes' buoyancy principle, at temperatures from (258 to 294) K, pressures up to 0.86 MPa, and mole fractions of HFC134a from (0.2391 to 0.7989). The overall experimental standard uncertainty in temperature, pressure, mole fraction and density were estimated to be less than 5 mK, 176 Pa, (0.02 and 0.05)%, respectively. A truncated virial equation of state was employed to correlate the experimental pVTx data of (HFC134a + HC290) mixtures. This equation represented the experimental pressures and densities with average absolute relative deviations of (0.043 and 0.046)%, respectively.