Measurements of gaseous PVTx properties and saturated vapor densities of refrigerant mixture R-125 + R-143a

H. Uchida, H. Sato, K. Watanabe

Research output: Contribution to journalArticle

7 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)97-105
Number of pages9
JournalInternational Journal of Thermophysics
Volume20
Issue number1
Publication statusPublished - 1999 Jan

Fingerprint

Density of gases
refrigerants
Refrigerants
vapors
Isochores
Chemical analysis
dew point
saturation
Temperature
virial coefficients
Thermodynamics
temperature
purity
thermodynamics
expansion

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Physical and Theoretical Chemistry
  • Computational Mechanics
  • Mechanics of Materials
  • Physics and Astronomy (miscellaneous)

Cite this

Measurements of gaseous PVTx properties and saturated vapor densities of refrigerant mixture R-125 + R-143a. / Uchida, H.; Sato, H.; Watanabe, K.

In: International Journal of Thermophysics, Vol. 20, No. 1, 01.1999, p. 97-105.

Research output: Contribution to journalArticle

@article{5e35833f3b1b40cbb46057a0c1181103,
title = "Measurements of gaseous PVTx properties and saturated vapor densities of refrigerant mixture R-125 + R-143a",
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.",
author = "H. Uchida and H. Sato and K. Watanabe",
year = "1999",
month = "1",
language = "English",
volume = "20",
pages = "97--105",
journal = "International Journal of Thermophysics",
issn = "0195-928X",
publisher = "Springer New York",
number = "1",

}

TY - JOUR

T1 - Measurements of gaseous PVTx properties and saturated vapor densities of refrigerant mixture R-125 + R-143a

AU - Uchida, H.

AU - Sato, H.

AU - Watanabe, K.

PY - 1999/1

Y1 - 1999/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0032657605&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032657605&partnerID=8YFLogxK

M3 - Article

VL - 20

SP - 97

EP - 105

JO - International Journal of Thermophysics

JF - International Journal of Thermophysics

SN - 0195-928X

IS - 1

ER -