Thermodynamics Research Center / ThermoML | International Journal of Thermophysics

Thermal Diffusivity, Sound Speed, Viscosity, and Surface Tension of R227ea (1,1,1,2,3,3,3-Heptafluoropropane)

Froba, A. P.[A. P.], Botero, C., Leipertz, A.
Int. J. Thermophys. 2006, 27, 6, 1609-1625
ABSTRACT
The purpose of the experimental investigations described in the present paper was to carry out an extensive characterization of R227ea (1,1,1,2,3,3,3-heptafluoropropane), a working fluid that has gained increasing importance in refrigeration and air conditioning technology fields. With dynamic light scattering (DLS), a non-intrusive, laser-optical technique, the thermal diffusivity and sound speed of the liquid and vapor phases, as well as the surface tension and kinematic viscosity of the liquid phase, could be determined with high accuracy at saturation conditions, over a wide temperature range starting at 253.15 K and extending to the critical point.
Compounds
# Formula Name
1 C3HF7 1,1,1,2,3,3,3-heptafluoropropane
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 1
  • Critical temperature, K ; Liquid
  • Liquid
  • Gas
  • Visual observation in an unstirred cell
  • 1
  • POMD
  • 1
  • Surface tension liquid-gas, N/m ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • surface light scattering
  • 17
  • POMD
  • 1
  • Thermal diffusivity, m2/s ; Gas
  • Temperature, K; Gas
  • Gas
  • Liquid
  • dynamic light scattering
  • 17
  • POMD
  • 1
  • Thermal diffusivity, m2/s ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • dynamic light scattering
  • 20
  • POMD
  • 1
  • Kinematic viscosity, m2/s ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • surface light scattering
  • 17
  • POMD
  • 1
  • Speed of sound, m/s ; Gas
  • Temperature, K; Gas
  • Gas
  • Liquid
  • dynamic light scattering
  • 15
  • POMD
  • 1
  • Speed of sound, m/s ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • dynamic light scattering
  • 18