ABSTRACT

In this work, the viscosity of R1234yf, (R32 + R1234yf), and (R125 + R1234yf) in one-phase liquid was measured. The combined expanded uncertainty of viscosity measurement apparatus of confidence of 0.95 (k = 2) is about 2.0%. The measurements of mixtures containing (30.0, 50.0, and 70.0) wt% R32 or R125 were carried out between T = (283.0 and 323.0) K (at intervals of T = 5 K) and P = (1.58 and 2.74) MPa, with a moving piston viscometer (VISCOpro 1600, accuracy +-1.0%) and a Coriolis flowmeter (Ultramass MKII, accuracy +-0.001 g/ml). The measured data were correlated with a hard-sphere (RSH) method and the Grunberg and Nissan method. The average absolute deviations are (2.2 and 3.3)% for the (R32 + R1234yf) and (R125 + R1234yf) mixtures by RSH method, (2.8 and 1.3)% for the (R32 + R1234yf) and (R125 + R1234yf) mixtures by Grunberg and Nissan method, while (3.5 and 2.4)% for the (R32 + R1234yf) and (R125 + R1234yf) mixtures by RefProp V9.1, respectively.

Compounds

#	Formula	Name
1	C3H2F4	2,3,3,3-tetrafluoro-1-propene
2	CH2F2	difluoromethane
3	C2HF5	pentafluoroethane

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	Moving piston method	25
POMD	2 1	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Mass fraction - 2; Liquid	Liquid	Moving piston method	26
POMD	2 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Mass fraction - 2; Liquid	Liquid	Vibrating tube method	26
POMD	3 1	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Mass fraction - 3; Liquid	Liquid	Moving piston method	27
POMD	3 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Mass fraction - 3; Liquid	Liquid	Vibrating tube method	27

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Liquid viscosity of low-GWP refrigerant mixtures (R32 + R1234yf) and (R125 + R1234yf)

Dang, Y.[Yagu], Kamiaka, T.[Takumi], Dang, C.[Chaobin], Hihara, E.[Eiji]

ABSTRACT