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

作　　者：Chuang Pan Yuande Dai Yiwu Yi Yu Liao 

机构地区：[1]School of Advanced Manufacturing,Nanchang University,Nanchang 330031,China

出　　处：《Chinese Journal of Chemical Engineering》2023年第10期124-131,共8页中国化学工程学报（英文版）

基　　金：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(vd W),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 

分 类 号：TB64[一般工业技术—制冷工程]