ABSTRACT

Isothermal vapor liquid equilibrium (VLE) measurements for difluoromethane (R32) p trans-1,3,3,3- tetrafluoropropene (R1234ze(E)) binary system were measured using a recirculation analytical apparatus at temperatures from 283.15 K to 323.15 K. Saturated vapor pressures of R32, R134a (1,1,1,2- tetrafluoroethane) and R1234ze(E) were also measured by this apparatus in the same temperature range to confirm the temperature and pressure measurements. The analytical performance of this apparatus was validated by measuring the vapor liquid equilibria of R32 p R134a. The vapor liquid equilibrium data were correlated by Peng-Robinson-Stryjek-Vera (PRSV) equation of state combined with the Wong and Sandler (WS) mixing rule and the non-random two-liquid (NRTL) activity coefficient model.

Compounds

#	Formula	Name
1	CH2F2	difluoromethane
2	C2H2F4	1,1,1,2-tetrafluoroethane
3	C3H2F4	trans-1,3,3,3-tetrafluoropropene

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	9
POMD	2	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	9
POMD	3	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	9
POMD	1 2	Vapor or sublimation pressure, kPa ; Gas	Mole fraction - 1; Liquid Temperature, K; Liquid	Gas Liquid	Closed cell (Static) method	27
POMD	1 2	Mole fraction - 1 ; Gas	Mole fraction - 1; Liquid Temperature, K; Liquid	Gas Liquid	Chromatography	27
POMD	1 3	Vapor or sublimation pressure, kPa ; Gas	Mole fraction - 1; Liquid Temperature, K; Liquid	Gas Liquid	Closed cell (Static) method	65
POMD	1 3	Mole fraction - 1 ; Gas	Mole fraction - 1; Liquid Temperature, K; Liquid	Gas Liquid	Chromatography	65

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Isothermal vapor liquid equilibrium measurements for difluoromethane (R32) + trans-1,3,3,3-tetrafluoropropene (R1234ze(E))

Hu, X.[Xiaozhen], Meng, X.[Xianyang], Wu, J.[Jiangtao]

ABSTRACT