NDLI: Measurements of Gaseous PVTx Properties and Saturated Vapor Densities of Refrigerant Mixture R-125+R-143a

Content Provider	Springer Nature Link
Author	Uchida, H. Sato, H. Watanabe, K.
Copyright Year	1999
Abstract	The experimental PVTx properties of a binary refrigerant mixture, R-125 (pentafluoroethane)+R-143a (1,1,1-trifluoroethane), have been measured for a composition of 50 mass% R-125 by a constant-mass method coupled with an expansion procedure in a range of temperatures from 305 to 400 K, pressures from 1.5 to 6.1 MPa, and densities from 92 to 300 kg·m$^{−3}$. The experimental uncertainties of the present measurements are estimated to be within ±7.2 mK in temperature, ±3.0 kPa in pressure, ±0.12 kg·m$^{−3}$ in density, and ±0.040 mass% in composition. The sample purities are 99.953 mass% for R-125 and 99.998% for R-143a. Seven saturated vapor densities and dew point pressures of the R-125+R-143a system were determined, on the basis of rather detailed PVTx properties measured in the vicinity of the saturation boundary as well as the thermodynamic behavior of isochores near saturation. The second and third virial coefficients for temperatures from 330 to 400 K were also determined.
Starting Page	97
Ending Page	106
Page Count	10
File Format	PDF
ISSN	0195928X
Journal	International Journal of Thermophysics
Volume Number	20
Issue Number	1
e-ISSN	15729567
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	1999-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Physical Chemistry Industrial Chemistry/Chemical Engineering Mechanics Condensed Matter
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics

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Thermodynamic Modeling of Gas-Phase PVTx Properties for the Ternary R-32/125/143a System

Bubble-Point Pressures and Saturated- and Compressed-Liquid Densities of the Binary R-125 + R-143a System

Measurements of Saturation Densities in Critical Region and Critical Loci for Binary R-32/125 and R-125/143a Systems

Equations for the Thermal Conductivity of R-32, R-125, R-134a, and R-143a

A Thermodynamic Equation of State for Pentafluoroethane (R-125)

Measurements of Specific Heat Capacity of Gaseous R-143a Using a Flow Calorimeter

An Experimental Study of pVTx Properties for Binary Mixtures of HFC-32 and HFC-125

Viscosity of Gaseous HFC-143a (1,1,1-trifluoroethane) Under High Pressures

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Measurements of Gaseous PVTx Properties and Saturated Vapor Densities of Refrigerant Mixture R-125+R-143a

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