Ideal-gas specific heat and second virial coefficient of HFC-125 based on sound-velocity measurements
Journal Article
·
· International Journal of Thermophysics
- Keio Univ., Yokohama (Japan)
The sound velocity in gaseous pentafluoroethane (HFC-125, CF{sub 3}CHF{sub 2}) has been measured by means of a spherical acoustic resonator. Seventy-two sound-velocity values were measured with an uncertainty of {plus_minus}0.01% at temperatures form 273 to 343 K and pressures form 10 to 250 kPa. 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.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 471824
- Journal Information:
- International Journal of Thermophysics, Vol. 17, Issue 3; Other Information: PBD: May 1996
- Country of Publication:
- United States
- Language:
- English
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