Sound-velocity measurements for HFC-134a and HFC-152a with a spherical resonator

T. Hozumi, T. Koga, H. Sato, K. Watanabe

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

A spherical acoustic resonator was developed for measuring sound velocities in the gaseous phase and ideal-gas specific heats for new refrigerants. The radius of the spherical resonator, being about 5 cm, was determined by measuring sound velocities in gaseous argon at temperatures from 273 to 348 K and pressures up to 240 kPa. The measurements of 23 sound velocities in gaseous HFC-134a (1,1,1,2-tetrafluoroethane) at temperatures of 273 and 298 K and pressures from 10 to 250 kPa agree well with the measurements of Goodwin and Moldover. In addition, 92 sound velocities in gaseous HFC-152a (1,1-difluoroethane) with an accuracy of ±0.01% were measured at temperatures from 273 to 348 K and pressures up to 250 kPa. The ideal-gas specific heats as well as the second acoustic virial coefficients have been obtained for both these important alternative refrigerants. The second virial coefficients for HFC-152a derived from the present sound velocity measurements agree extremely well with the reported second virial coefficient values obtained with a Burnett apparatus.

Original languageEnglish
Pages (from-to)739-762
Number of pages24
JournalInternational Journal of Thermophysics
Volume14
Issue number4
DOIs
Publication statusPublished - 1993 Jul

Fingerprint

norflurane
Acoustic variables measurement
Acoustic wave velocity
acoustic velocity
velocity measurement
Velocity measurement
Resonators
resonators
Specific heat of gases
virial coefficients
refrigerants
ideal gas
Refrigerants
specific heat
Acoustic resonators
acoustics
Argon
Temperature
temperature
Acoustics

Keywords

  • HFC-134a
  • HFC-152a
  • ideal-gas specific heat
  • second acoustic virial coefficient
  • second virial coefficient
  • sound velocity
  • spherical resonator

ASJC Scopus subject areas

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

Cite this

Sound-velocity measurements for HFC-134a and HFC-152a with a spherical resonator. / Hozumi, T.; Koga, T.; Sato, H.; Watanabe, K.

In: International Journal of Thermophysics, Vol. 14, No. 4, 07.1993, p. 739-762.

Research output: Contribution to journalArticle

Hozumi, T. ; Koga, T. ; Sato, H. ; Watanabe, K. / Sound-velocity measurements for HFC-134a and HFC-152a with a spherical resonator. In: International Journal of Thermophysics. 1993 ; Vol. 14, No. 4. pp. 739-762.
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