Share

Sound-velocity measurements for HFC134a and HFC152a with a spherical resonator.

Author(s) : HOZUMI T., KOGA T., SATO H., WATANABE K.

Type of article: Article

Summary

A spherical acoustic resonator was developed for measuring sound velocities in the gaseous phase and ideal-gas specific heats for new refrigerants. The measurements of 23 sound velocities in gaseaous R134a at temperatures of 273 and 298 K and pressures from 10 to 250 kilopascals agree well with the measurements of Goodwin and Moldover. In addition, 92 sound velocities in gaseous R152a with an accuracy of more or less 0.01% were measured at temperatures from 273 to 348 K and pressures up to 250 kilopascals. The ideal-gas specific heats as well as the second acoustic virial coefficients were obtained for both refrigerants.

Details

  • Original title: Sound-velocity measurements for HFC134a and HFC152a with a spherical resonator.
  • Record ID : 1994-2805
  • Languages: English
  • Source: Int. J. Thermophys. - vol. 14 - n. 4
  • Publication date: 1993/07
  • Document available for consultation in the library of the IIR headquarters only.

Links


See other articles in this issue (6)
See the source

Indexing