Evaluation and predictive study of the mixing rules for vapor-liquid equilibrium of R1234yf mixtures

被引:0
|
作者
Wang L. [1 ]
Jiang R. [1 ]
Zhang C. [1 ]
Li X. [1 ]
Tan Y. [1 ]
机构
[1] Institute of Building Energy and Thermal Science, Henan University of Science and Technology, Henan, Luoyang
来源
Huagong Xuebao/CIESC Journal | 2024年 / 75卷 / 02期
关键词
mixing rules; mixtures; model; prediction; R1234yf; vapor-liquid equilibrium;
D O I
10.11949/0438-1157.20231129
中图分类号
学科分类号
摘要
The mixed refrigerant containing R1234yf has the characteristics of excellent system performance and environmental friendliness, and has received widespread attention in the current iteration of refrigerants. The vapor-liquid equilibrium is the most basic thermodynamic property for the mixtures, and its theoretical calculation is of vital importance. To enhance the accuracy of vapor-liquid equilibrium data for the R1234yf mixtures, the Peng-Robinson (PR) equation of state coupling with three mixing rules (vdW, WS, and MHV1), and the NRTL activity coefficient model are selected to evaluate the experimental properties of vapor-liquid equilibrium for 16 R1234yf binary systems. The results show that the calculation performance of WS mixing rules and MHV1 mixing rules is better than that of vdW mixing rules. The vdW mixing rule provides superior computational performance for the majority of mixtures. Finally, a predictive model is proposed to forecast the vapor-liquid equilibrium properties of R1234yf-based mixtures. The predicted AARD of pressure is 0.49% and the AAD of mole fraction of gas phase is 0.0031. These predictive deviations satisfy engineering applications. © 2024 Materials China. All rights reserved.
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页码:475 / 483
页数:8
相关论文
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