化工学报2024，Vol.75Issue(2)：475-483,9.DOI:10.11949/0438-1157.20231129
含R1234yf混合工质汽液相平衡的混合规则评估与预测研究
Evaluation and predictive study of the mixing rules for vapor-liquid equilibrium of R1234yf mixtures
摘要
Abstract
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.关键词
R1234yf/混合物/汽液相平衡/混合规则/模型/预测Key words
R1234yf/mixtures/vapor-liquid equilibrium/mixing rules/model/prediction分类
能源科技引用本文复制引用
王林,江荣鼎,张春晓,李修真,谈莹莹..含R1234yf混合工质汽液相平衡的混合规则评估与预测研究[J].化工学报,2024,75(2):475-483,9.基金项目
国家自然科学基金项目(52376005,52378094) （52376005,52378094）
