VLE measurement for binary systems of CO2+1,1,1,2-tetrafluoroethane (HFC-134a) at high pressures

Lim, Jong Sung; Jin, Jungmin; Yoo, Ki‐Pung

doi:10.1016/j.supflu.2007.09.025

Cited by 20 publications

(18 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1 shows a schematic diagram of the experimental apparatus for measuring high-pressure vapor-liquid equilibrium data. The experimental apparatus used in this work was the same that used in our previous works [11,12], and the experimental procedure is also well described in them. …”

Section: Chemicalsmentioning

confidence: 99%

High-pressure vapor-liquid equilibrium measurement for the binary mixtures of carbon dioxide+n-butanol

Lim

Yoon

Yoo

2009

Korean J. Chem. Eng.

Self Cite

View full text Add to dashboard Cite

High-pressure vapor-liquid equilibrium data for the binary mixtures of CO 2 +n-butanol were measured at various isotherms of (313.15, 323.15, 333.15 and 343.15) K, respectively. The equilibrium compositions of vapor and liquid phases and pressures at each temperature were measured in a circulation-type equilibrium apparatus. To facilitate easy equilibration, both vapor and liquid phases were circulated separately in the experimental apparatus and the equilibrium composition was analyzed by an on-line gas chromatograph. The experimental data were compared with literature results and correlated with the Peng-Robinson (PR) equations of state using the Wong-Sandler mixing rules. Calculated results with the PR EOS showed good agreement with our experimental data.

show abstract

Section: Chemicalsmentioning

confidence: 99%

High-pressure vapor-liquid equilibrium measurement for the binary mixtures of carbon dioxide+n-butanol

Lim

Yoon

Yoo

2009

Korean J. Chem. Eng.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The Wong-Sandler mixing rules [8] were used in this work to obtain EoS parameters for a mixture from those of the pure components. These mixing rules for a cubic equation of state can be written as (6) with (7) and (8) where C is a numerical constant equal to ln( −1)/ for the PR EoS used in this work. The single adjustable parameter (k ij ) for each binary pair is referred to as the Wong-Sandler mixing rule parameter.…”

Section: Pr-eosmentioning

confidence: 99%

“…These mixtures satisfy the properties of original refrigerant conditions such as flammability and toxicity but with less environmental impact (ozone depletion and global warming). Vapor-liquid equilibrium (VLE) data are necessary to design appropriate refrigeration process and determine optimal process conditions [5,6]; however, there are few experimental data reported in the literature for CO 2 (1)+HFC-143a system [4].…”

Section: Introductionmentioning

confidence: 99%

High pressure isothermal vapor-liquid equilibria for the binary system of carbon dioxide (CO2)+1,1,1-trifluoroethane (R-143a)

Kim

Yoo

Lim

2010

Korean J. Chem. Eng.

Self Cite

View full text Add to dashboard Cite

Isothermal vapor-liquid equilibrium data for the binary mixture of carbon dioxide (CO 2 )+1,1,1-trifluoroethane (HFC-143a) were measured within the temperature range of 273.15-333.15 K. The data in the two-phase region were measured by using a circulation-type equilibrium apparatus in which both vapor and liquid phases are continuously recirculated. The experimental data were correlated with the Peng-Robinson equation of state (PR-EOS) using the Wong-Sandler mixing rules combined with the NRTL excess Gibbs free energy model. The values calculated by the PR EOS with the W-S mixing rules show good agreement with our experimental data.

show abstract

“…Initial CFC alternatives included some hydrochlorofluorocarbons (HCFCs), but they will be also phased out internationally because their ozone depletion potentials (ODPs) and global warming potentials (GWPs) are significant though less than those of CFCs. Hydrofluorocarbons (HFCs) synthetic refrigerants which have zero ODPs were proposed as promising replacements for CFCs and HCFCs [1]. The deadline for HCFCs which have low ozone depletion potential is 2030.…”

Section: Introductionmentioning

confidence: 99%

Prediction the Vapor-Liquid Equilibria of CO₂-Containing Binary Refrigerant Mixtures Using Artificial Neural Networks

Azari

Atashrouz

Mirshekar

2013

ISRN Chemical Engineering

View full text Add to dashboard Cite

Artificial neural network (ANN) technique has been applied for estimation of vapor-liquid equilibria (VLE) for eight binary refrigerant systems. The refrigerants include difluoromethane (R32), propane (R290), 1,1-difluoroethane (R152a), hexafluoroethane (R116), decafluorobutane (R610), 2,2-dichloro-1,1,1-trifluoroethane (R123), 1-chloro-1,2,2,2-tetrafluoroethane (R124), and 1,1,1,2-tetrafluoroethane (R134a). The related experimental data of open literature have been used to construct the model. Furthermore, some new experimental data (not applied in ANN training) have been used to examine the reliability of the model. The results confirm that there is a reasonable conformity between the predicted values and the experimental data. Additionally, the ability of the ANN model is examined by comparison with the conventional thermodynamic models. Moreover, the presented model is capable of predicting the azeotropic condition.

show abstract

VLE measurement for binary systems of CO2+1,1,1,2-tetrafluoroethane (HFC-134a) at high pressures

Cited by 20 publications

References 7 publications

High-pressure vapor-liquid equilibrium measurement for the binary mixtures of carbon dioxide+n-butanol

High-pressure vapor-liquid equilibrium measurement for the binary mixtures of carbon dioxide+n-butanol

High pressure isothermal vapor-liquid equilibria for the binary system of carbon dioxide (CO2)+1,1,1-trifluoroethane (R-143a)

Prediction the Vapor-Liquid Equilibria of CO₂-Containing Binary Refrigerant Mixtures Using Artificial Neural Networks

Contact Info

Product

Resources

About

VLE measurement for binary systems of CO2+1,1,1,2-tetrafluoroethane (HFC-134a) at high pressures

Cited by 20 publications

References 7 publications

High-pressure vapor-liquid equilibrium measurement for the binary mixtures of carbon dioxide+n-butanol

High-pressure vapor-liquid equilibrium measurement for the binary mixtures of carbon dioxide+n-butanol

High pressure isothermal vapor-liquid equilibria for the binary system of carbon dioxide (CO2)+1,1,1-trifluoroethane (R-143a)

Prediction the Vapor-Liquid Equilibria of CO2-Containing Binary Refrigerant Mixtures Using Artificial Neural Networks

Contact Info

Product

Resources

About

Prediction the Vapor-Liquid Equilibria of CO₂-Containing Binary Refrigerant Mixtures Using Artificial Neural Networks