Thermodynamic property predictions for refrigerant mixtures

Lee, Ming Jer; Sun, Hsueh Cheng

doi:10.1021/ie00004a036

Cited by 19 publications

(9 citation statements)

References 27 publications

(26 reference statements)

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“…It has been reported that HCFC-124 + HCFC-142b forms an azeotropic mixture almost irrelevant to temperature. Lee and Sun (1992) correlated the vapor-liquid equilibrium data of various refrigerant mixtures using the Teja-Patel equation of state and regressed the binary interaction parameters to the difference of acentric factors and the ratio of critical compressibility factors of each pure component. UNIFAC also predicts azeotropic behavior for this system.…”

Section: Correlation Of Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Vapor−Liquid Equilibria for 1,1,1,2-Tetrafluoroethane + 1-Chloro-1,2,2,2-tetrafluoroethane and 1-Chloro-1,2,2,2-tetrafluoroethane + 1-Chloro-1,1-difluoroethane Systems

Lee

Kim

1996

J. Chem. Eng. Data

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Isothermal vapor−liquid equilibria were determined for two binary mixtures of refrigerants with a circulation type apparatus. The 1,1,1,2-tetrafluoroethane (HFC-134a) + 1-chloro-1,2,2,2-tetrafluoroethane (HCFC-124) system was studied at 296.45, 302.25, and 307.25 K. The 1-chloro-1,2,2,2-tetrafluoroethane (HCFC-124) + 1-chloro-1,1-difluoroethane (HCFC-142b) system was studied at 298.15 and 312.15 K. At each temperature, the pressure and vapor and liquid compositions were measured. Results were correlated with the Peng−Robinson equation of state.

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Section: Correlation Of Resultsmentioning

confidence: 99%

“…Azeotropic mixtures have merit when used as refrigerants because they show behavior similar to pure components. It has been predicted that the HCFC-124 + HCFC-142b system might have an azeotropic point (Lee and Sun, 1992).…”

Section: Introductionmentioning

confidence: 99%

Vapor−Liquid Equilibria for 1,1,1,2-Tetrafluoroethane + 1-Chloro-1,2,2,2-tetrafluoroethane and 1-Chloro-1,2,2,2-tetrafluoroethane + 1-Chloro-1,1-difluoroethane Systems

Lee

Kim

1996

J. Chem. Eng. Data

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“…In 1992, Lee and Sun 39 applied the vdW mixing rule to establish a model for the BIPwhere ω 1 and ω 2 are the acentric factors of the two components, respectively, Z c1 and Z c2 are the critical compressibility factors of the two components, respectively, and Z c1 / Z c2 ≤ 1.…”

Section: Development Of Bipmentioning

confidence: 99%

Prediction of the Binary Interaction Parameter of Carbon Dioxide/Alkanes Mixtures in the Pseudocritical Region

Chen

Liu

et al. 2019

ACS Omega

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The interaction parameters between two components need to be first determined to obtain the thermophysical properties of the binary mixtures. In this paper, the research progresses of the binary interaction parameter for CO 2 and hydrocarbons (HCs) and their related mixtures are illustrated. Aiming at the physical property prediction of CO 2 /alkanes (C 1 –C 10 ) binary mixtures in pseudocritical regions, the experimental data of CO 2 /alkanes (C 1 –C 10 ) in the pseudocritical region available in the open literature are collected. Besides, the calculation of k ij is carried out by five typically accepted correlations selected from the literature. The effects of temperature, pressure, carbon number, and acentric factor on k ij are investigated. By researching the influence of the above five factors on k ij , it reveals that temperature is the most important one. Considering the influence of the critical temperatures of mixtures, a simple correlation is proposed to evaluate k ij for light HC mixtures in the pseudocritical region.

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“…where x i and x j is the mole fraction of each component in a mixed refrigerant and k ij is a binary interaction parameter. k ij of the common refrigerants can be obtained by the relevant information in the literature, 18,19 but in the three-stage auto-cascade refrigeration system, the interaction parameter k ij of lowtemperature refrigerant is very short, which can be calculated by the simple correlation model [20][21][22][23] of k ij . It is defined as…”

Section: The Mixing Rulesmentioning

confidence: 99%

The study of thermodynamic properties of zeotropic mixtures of R600a/R23/R14

Zhang

et al. 2017

Advances in Mechanical Engineering

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Thermodynamic properties of zeotropic mixtures of R600a/R23/R14 have been investigated and calculated based on the established mathematical model. The deviations of bubble pressure and vapor composition between the simulation results and the experimental data were 20.16% and 21.22% for R600a/R23 and 20.14% and 0.5% for R134a/R23, respectively. The simulation results of R32/R125/R134a were compared with the experimental values of the component, and the average error was 0.31%, and most deviations were within 6 5%. The average error in enthalpy value and entropy value between the simulation and National Institute of Standard Technology data was 20.25% and 3.33%, respectively. This suggests that the simulation results meet the requirements of engineering calculation. Based on the experimental results, the thermodynamic properties of the auto-cascade refrigeration system were calculated and analyzed in detail. The pressure-enthalpy diagrams of the auto-refrigerating cascade system with R600a/R23/R14 under the operating conditions were given, and the cycle of this system can be clearly described by the diagram of spatial pressure-enthalpy, which indicates that this simulation program could analyze the system cycle effectively and provide a direction for improvement of the auto-refrigerating cascade system.

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Thermodynamic property predictions for refrigerant mixtures

Cited by 19 publications

References 27 publications

Vapor−Liquid Equilibria for 1,1,1,2-Tetrafluoroethane + 1-Chloro-1,2,2,2-tetrafluoroethane and 1-Chloro-1,2,2,2-tetrafluoroethane + 1-Chloro-1,1-difluoroethane Systems

Vapor−Liquid Equilibria for 1,1,1,2-Tetrafluoroethane + 1-Chloro-1,2,2,2-tetrafluoroethane and 1-Chloro-1,2,2,2-tetrafluoroethane + 1-Chloro-1,1-difluoroethane Systems

Prediction of the Binary Interaction Parameter of Carbon Dioxide/Alkanes Mixtures in the Pseudocritical Region

The study of thermodynamic properties of zeotropic mixtures of R600a/R23/R14

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