Ideal-gas specific heat and second virial coefficient of HFC-125 based on sound-velocity measurements

T. Hozumi, H. Sato, K. Watanabe

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

The sound velocity in gaseous pentafluoroethane (HFC-125, CF3CHF2) has been measured by means of a spherical acoustic resonator. Seventy-two sound-velocity values were measured with an uncertainty of ±0.01% at temperatures from 273 to 343 K and pressures from 10 to 250 k Pa. The ideal-gas specific heats and the second acoustic-virial coefficients have been determined on the basis of the sound-velocity measurements. The second virial coefficients calculated from the present sound-velocity measurements agree with literature values which were determined from PVT measurements by means of a Burnett method.

Original languageEnglish
Pages (from-to)587-595
Number of pages9
JournalInternational Journal of Thermophysics
Volume17
Issue number3
Publication statusPublished - 1996

Fingerprint

Specific heat of gases
Acoustic variables measurement
virial coefficients
Acoustic wave velocity
ideal gas
acoustic velocity
velocity measurement
Velocity measurement
specific heat
Acoustic resonators
acoustics
Acoustics
resonators
pentafluoroethane

Keywords

  • Alternative refrigerant
  • HFC-125
  • Ideal-gas specific heat
  • Second acoustic-virial coefficient
  • Second virial coefficient
  • Sound velocity
  • Spherical resonator

ASJC Scopus subject areas

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

Cite this

Ideal-gas specific heat and second virial coefficient of HFC-125 based on sound-velocity measurements. / Hozumi, T.; Sato, H.; Watanabe, K.

In: International Journal of Thermophysics, Vol. 17, No. 3, 1996, p. 587-595.

Research output: Contribution to journalArticle

@article{ad674a34bab54fd5a332dac926951ef9,
title = "Ideal-gas specific heat and second virial coefficient of HFC-125 based on sound-velocity measurements",
abstract = "The sound velocity in gaseous pentafluoroethane (HFC-125, CF3CHF2) has been measured by means of a spherical acoustic resonator. Seventy-two sound-velocity values were measured with an uncertainty of ±0.01{\%} at temperatures from 273 to 343 K and pressures from 10 to 250 k Pa. The ideal-gas specific heats and the second acoustic-virial coefficients have been determined on the basis of the sound-velocity measurements. The second virial coefficients calculated from the present sound-velocity measurements agree with literature values which were determined from PVT measurements by means of a Burnett method.",
keywords = "Alternative refrigerant, HFC-125, Ideal-gas specific heat, Second acoustic-virial coefficient, Second virial coefficient, Sound velocity, Spherical resonator",
author = "T. Hozumi and H. Sato and K. Watanabe",
year = "1996",
language = "English",
volume = "17",
pages = "587--595",
journal = "International Journal of Thermophysics",
issn = "0195-928X",
publisher = "Springer New York",
number = "3",

}

TY - JOUR

T1 - Ideal-gas specific heat and second virial coefficient of HFC-125 based on sound-velocity measurements

AU - Hozumi, T.

AU - Sato, H.

AU - Watanabe, K.

PY - 1996

Y1 - 1996

N2 - The sound velocity in gaseous pentafluoroethane (HFC-125, CF3CHF2) has been measured by means of a spherical acoustic resonator. Seventy-two sound-velocity values were measured with an uncertainty of ±0.01% at temperatures from 273 to 343 K and pressures from 10 to 250 k Pa. The ideal-gas specific heats and the second acoustic-virial coefficients have been determined on the basis of the sound-velocity measurements. The second virial coefficients calculated from the present sound-velocity measurements agree with literature values which were determined from PVT measurements by means of a Burnett method.

AB - The sound velocity in gaseous pentafluoroethane (HFC-125, CF3CHF2) has been measured by means of a spherical acoustic resonator. Seventy-two sound-velocity values were measured with an uncertainty of ±0.01% at temperatures from 273 to 343 K and pressures from 10 to 250 k Pa. The ideal-gas specific heats and the second acoustic-virial coefficients have been determined on the basis of the sound-velocity measurements. The second virial coefficients calculated from the present sound-velocity measurements agree with literature values which were determined from PVT measurements by means of a Burnett method.

KW - Alternative refrigerant

KW - HFC-125

KW - Ideal-gas specific heat

KW - Second acoustic-virial coefficient

KW - Second virial coefficient

KW - Sound velocity

KW - Spherical resonator

UR - http://www.scopus.com/inward/record.url?scp=0030151502&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030151502&partnerID=8YFLogxK

M3 - Article

VL - 17

SP - 587

EP - 595

JO - International Journal of Thermophysics

JF - International Journal of Thermophysics

SN - 0195-928X

IS - 3

ER -