ABSTRACT

The viscosities of liquid mixtures of n-butane, n-hexane, and n-octane with squalane that represent model mixtures of refrigerants with refrigeration oil were measured at temperatures between 273.15 and 333.15 K, and at pressures from 0.1 to 30MPa, by using a falling body viscometer. The uncertainty of the measurements was estimated to be no larger than 2.9%. The experimental viscosity values were fitted to a Tait-like equation within 2.8%. There are larger deviations between the experimental data and calculated values predicted by the equation of Kanti et al., which is derived from the Flory theory. By introducing an interaction parameter of the energetic mixing rule into the equation, the deviations were significantly reduced.

Compounds

#	Formula	Name
1	C4H10	butane
2	C6H14	hexane
3	C8H18	octane
4	C30H62	2,6,10,15,19,23-hexamethyltetracosane

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	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	16
POMD	1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Constant-volume piezometry	16
POMD	2	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	16
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Constant-volume piezometry	16
POMD	3	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	16
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Constant-volume piezometry	16
POMD	4	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	16
POMD	4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Constant-volume piezometry	16
POMD	1 4	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Mole fraction - 4; Liquid Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	80
POMD	1 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 4; Liquid Pressure, kPa; Liquid	Liquid	Constant-volume piezometry	80
POMD	2 4	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Mole fraction - 4; Liquid Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	64
POMD	2 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 4; Liquid Pressure, kPa; Liquid	Liquid	Constant-volume piezometry	64
POMD	4 3	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Mole fraction - 4; Liquid Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	80
POMD	4 3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 4; Liquid Pressure, kPa; Liquid	Liquid	Constant-volume piezometry	80

Thermodynamics Research Center / ThermoML | International Journal of Thermophysics

Measurements of the Liquid Viscosities of Mixtures of n-Butane, n-Hexane, and n-Octane with Squalane to 30MPa

Kumagai, A., Tomida, D., Yokoyama, C.

ABSTRACT