SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2023, Vol. 62 ›› Issue (10): 124-131.DOI: 10.1016/j.cjche.2023.04.009

• Full Length Article • 上一篇    下一篇

Vapor-liquid equilibrium modeling for binary system of R152a/R1234ze(E)

Chuang Pan, Yuande Dai, Yiwu Yi, Yu Liao   

  1. School of Advanced Manufacturing, Nanchang University, Nanchang 330031, China
  • 收稿日期:2022-12-08 修回日期:2023-04-11 出版日期:2023-10-28 发布日期:2023-12-23
  • 通讯作者: Yuande Dai,E-mail:dydncutg@qq.com
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (22068024).

Vapor-liquid equilibrium modeling for binary system of R152a/R1234ze(E)

Chuang Pan, Yuande Dai, Yiwu Yi, Yu Liao   

  1. School of Advanced Manufacturing, Nanchang University, Nanchang 330031, China
  • Received:2022-12-08 Revised:2023-04-11 Online:2023-10-28 Published:2023-12-23
  • Contact: Yuande Dai,E-mail:dydncutg@qq.com
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (22068024).

摘要: At present, the environment impact of refrigerants has been given attention. The binary mixture R152a/R1234ze(E) is an environmentally friendly refrigerant, which solves problems of poor cooling performance of the R1234ze(E) cycle and flammability of R152a. In order to obtain its basic thermal and physical parameters, it is necessary to carry out vapor–liquid equilibrium (VLE) research, and the cubic equation of states (EOS) is often used in the calculation of the thermodynamic properties of mixtures. In this paper, the VLE predicted models for R152a/R1234ze(E) in the temperature range of 298.15–328.15 K were constructed using Soave-Redlich-Kwong (SRK), Peng-Robinson (PR) equations of state (EOS) combined with van der Waals (vdW), Huron-Vidal (HV) mixing rules, respectively. The equilibrium pressures and vapor-phase mole fractions of the models were obtained by calculation, and all four models presented an extreme correlation with the experimental data. And it can be concluded that the calculated results of the PR + HV model are closer to the experimental data than those of the other three models, with the average absolute deviation of 0.0027 for vapor-phase mole fraction (AAD(ycal)) and the average absolute relative deviation of 0.243% for equilibrium pressure (AARD(pcal)), which provides a basis for accurately calculating the thermophysical properties of the mixture R152a/R1234ze (E).

关键词: Binary mixture, Binary interaction coefficient, PR + HV model, SRK + HV model, Vapor-liquid equilibrium

Abstract: At present, the environment impact of refrigerants has been given attention. The binary mixture R152a/R1234ze(E) is an environmentally friendly refrigerant, which solves problems of poor cooling performance of the R1234ze(E) cycle and flammability of R152a. In order to obtain its basic thermal and physical parameters, it is necessary to carry out vapor–liquid equilibrium (VLE) research, and the cubic equation of states (EOS) is often used in the calculation of the thermodynamic properties of mixtures. In this paper, the VLE predicted models for R152a/R1234ze(E) in the temperature range of 298.15–328.15 K were constructed using Soave-Redlich-Kwong (SRK), Peng-Robinson (PR) equations of state (EOS) combined with van der Waals (vdW), Huron-Vidal (HV) mixing rules, respectively. The equilibrium pressures and vapor-phase mole fractions of the models were obtained by calculation, and all four models presented an extreme correlation with the experimental data. And it can be concluded that the calculated results of the PR + HV model are closer to the experimental data than those of the other three models, with the average absolute deviation of 0.0027 for vapor-phase mole fraction (AAD(ycal)) and the average absolute relative deviation of 0.243% for equilibrium pressure (AARD(pcal)), which provides a basis for accurately calculating the thermophysical properties of the mixture R152a/R1234ze (E).

Key words: Binary mixture, Binary interaction coefficient, PR + HV model, SRK + HV model, Vapor-liquid equilibrium