Vapor–liquid equilibrium of difluoromethane +1,1,1,2-tetrafluoroethane systems over a temperature range from 258.15 to 343.15K

Cui, Xiquan; Chen, Guangming; Li, Changsheng; Han, Xiaohong

doi:10.1016/j.fluid.2006.09.017

Cited by 15 publications

(7 citation statements)

References 14 publications

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“…A schematic of the experimental equipment in this work is shown in Fig. 1, which is the same as the one described in detail by Han and Cui [3,5]. It consists of a stainless steel equilibrium cell and temperature and pressure measuring systems, etc.…”

Section: Methodsmentioning

confidence: 99%

Isothermal vapor–liquid equilibrium data for the binary mixture difluoromethane (HFC-32)+ethyl fluoride (HFC-161) over a temperature range from 253.15K to 303.15K

Han

Gao

et al. 2010

Fluid Phase Equilibria

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Section: Methodsmentioning

confidence: 99%

Isothermal vapor–liquid equilibrium data for the binary mixture difluoromethane (HFC-32)+ethyl fluoride (HFC-161) over a temperature range from 253.15K to 303.15K

Han

Gao

et al. 2010

Fluid Phase Equilibria

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“…Relative deviations of the experimental data p exp (top) and GEMC simulation results p sim (bottom) from the calculated results p cal from the Helmholtz EOS for R32. Red box solid, this work; ●, previous work; +, Holcomb et al; □, Nagel and Bier; ○, Defibaugh et al; △, Widiatmo et al; ▽, Fu et al; ◁, Coquelet et al; ×, Lee et al; ▷, Ho et al; ☆, Cui et al; ◇, Subramoney et al; and - -, PRSV2 EoS.…”

Section: Discussionmentioning

confidence: 92%

“… a The experimental data were obtained from this work and the literatures (R32, ,− R134a, ,− R1234ze(E) ,, ). b AARD( p ), % = (100/ N )∑ i =1 N |( p exp, i – p cal, i )/ p exp, i |. …”

Section: Results and Correlationsmentioning

confidence: 99%

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Phase Equilibria of Difluoromethane (R32), 1,1,1,2-Tetrafluoroethane (R134a), and trans-1,3,3,3-Tetrafluoro-1-propene (R1234ze(E)) Probed by Experimental Measurements and Monte Carlo Simulations

Yang

Siepmann

2020

Ind. Eng. Chem. Res.

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The combination of difluoromethane (R32), 1,1,1,2-tetrafluoroethane (R134a), and trans-1,3,3,3-tetrafluoro-1-propene (R1234ze(E)) has been recently proposed as a potential substitute (R456A) for hydrofluorocarbon working fluids. For the design and process simulation of refrigeration systems using refrigerant mixtures, precise knowledge of their thermophysical properties, especially vapor–liquid equilibrium (VLE), is crucial. To extend the experimental temperature range, a liquid-recirculation analytical apparatus, classified as AnTLcirCapValVis, was redesigned and VLE data for the binary mixtures of R32 + R134a, R32 + R1234ze(E), R134a + R1234ze(E), and the ternary system of R32 + R134a + R1234ze(E) were measured over the temperature range from 263.15 to 323.15 K. The standard uncertainties of the temperature, pressure, and the mole fractions of liquid and vapor phases are estimated to be within 10 mK, 0.5 kPa, and 0.005, respectively. The Peng–Robinson–Stryjek–Vera–Version-2 (PRSV2) equation of state combined with the Wong–Sandler (WS) mixing rule and the nonrandom two-liquid activity coefficient model (NRTL) was used to fit the mixing parameters of the binary data from this work and prior studies and to predict the ternary VLE properties. In addition, Gibbs ensemble Monte Carlo simulations with an all-atom force field were carried out to determine VLE properties and to characterize the microscopic structure of these mixtures. Good agreement is found between experiments, correlations, and simulations, which attests to the predictive capabilities of the PRSV2 + WS + NRTL model and molecular simulations.

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“…В работах [13][14][15][16] показаны преимущества математического моделиро-вания процессов перегонки с греющим паром с использованием искусствен-ных нейронных сетей.…”

Section: постановка задачиunclassified

Optimum parameters determination of water steam oil distillation

Samborskaya¹,

Gusev²,

Gryaznova³

et al. 2015

Science Bulletin of the NSTU

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Vapor–liquid equilibrium of difluoromethane +1,1,1,2-tetrafluoroethane systems over a temperature range from 258.15 to 343.15K

Cited by 15 publications

References 14 publications

Isothermal vapor–liquid equilibrium data for the binary mixture difluoromethane (HFC-32)+ethyl fluoride (HFC-161) over a temperature range from 253.15K to 303.15K

Isothermal vapor–liquid equilibrium data for the binary mixture difluoromethane (HFC-32)+ethyl fluoride (HFC-161) over a temperature range from 253.15K to 303.15K

Phase Equilibria of Difluoromethane (R32), 1,1,1,2-Tetrafluoroethane (R134a), and trans-1,3,3,3-Tetrafluoro-1-propene (R1234ze(E)) Probed by Experimental Measurements and Monte Carlo Simulations

Optimum parameters determination of water steam oil distillation

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