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	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

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.

ABSTRACT