ABSTRACT

Vapor liquid equilibrium data for difluoromethane (R32) + 2,3,3,3-tetrafluoroprop-1-ene (R1234yf) and fluoroethane (R161) + 2,3,3,3-tetrafluoroprop-1-ene (R1234yf) were measured over the temperature range of (283.15 to 323.15) K and at pressures from 0.4 to 3.2 MPa and from 0.4 to 1.8 MPa, respectively. A quasi-static analytical apparatus, improved from a recirculation analytical apparatus, was used to do the measurements. The Peng-Robinson-Stryjek-Vera equation of state combined with the Wong-Sandler mixing rule and the non-random two-liquid activity coefficient (PRSV + WS + NRTL) model were used to correlate the experimental data. The average absolute deviation of pressure AAD(p) and average absolute deviation of vapor phase mole fraction AAD(y) are 0.57% and 0.0018 for R32 + R1234yf and 0.14% and 0.0008 for R161 + R1234yf, respectively.

Compounds

#	Formula	Name
1	CH2F2	difluoromethane
2	C2H5F	fluoroethane
3	C3H2F4	trans-1,3,3,3-tetrafluoropropene
4	C3H2F4	2,3,3,3-tetrafluoro-1-propene

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	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	5
POMD	2	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	14
POMD	4	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	14
POMD	1 3	Vapor or sublimation pressure, kPa ; Liquid	Mole fraction - 1; Liquid Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	15
POMD	1 3	Mole fraction - 1 ; Gas	Mole fraction - 1; Liquid Temperature, K; Liquid	Gas Liquid	Chromatography	15
POMD	1 4	Vapor or sublimation pressure, kPa ; Liquid	Mole fraction - 1; Liquid Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	55
POMD	1 4	Mole fraction - 1 ; Gas	Mole fraction - 1; Liquid Temperature, K; Liquid	Gas Liquid	Chromatography	55
POMD	2 4	Vapor or sublimation pressure, kPa ; Liquid	Mole fraction - 2; Liquid Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	55
POMD	2 4	Mole fraction - 2 ; Gas	Mole fraction - 2; Liquid Temperature, K; Liquid	Gas Liquid	Chromatography	55

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Vapor liquid equilibrium measurements for difluoromethane (R32) + 2,3,3,3-tetrafluoroprop-1-ene (R1234yf) and fluoroethane (R161) + 2,3,3,3-tetrafluoroprop-1-ene (R1234yf)

Hu, X.[Xiaozhen], Yang, T.[Tao], Meng, X.[Xianyang], Bi, S.[Shengshan], Wu, J.[Jiangtao]

ABSTRACT