基团贡献法预测R1234yf和R290热力学性质的可靠性研究  

Study on Reliability of Group Contribution Method for Predicting Thermodynamic Properties of Refrigerants R2yf and R290

作　　者：董胜明 王获达 王波 胡晓微[1,2] 孙志利 田绅[1,2] Dong Shengming;Wang Huoda;Wang Bo;Hu Xiaowei;Sun Zhili;Tian Shen(Tianjin University of Commerce,Tianjin,300134,China;Tianjin Key Laboratory of Refrigeration Technology,Tianjin,300134,China;Chinese Association of Refrigeration,Beijing,100142,China)

机构地区：[1]天津商业大学,天津300134 [2]天津市制冷技术重点实验室,天津300134 [3]中国制冷学会,北京100142

出　　处：《冷藏技术》2022年第2期37-42,共6页Journal of Refrigeration Technology

基　　金：天津市科技特派员项目(21YDTPJC00930);天津市自然科学基金(18JCYBJC90500,19JCQNJC03700)。

摘　　要：R1234yf和R290作为新型环保制冷剂受到了广泛关注,成为很有前景的替代工质。在很多场合,尤其是制冷剂与制冷系统耦合过程中,往往需要连续性的数学模型来准确计算其热物理参数,因此,从易用性和可靠性两方面出发,深入探索并验证基团贡献法(Group-contribution method,GCM)对R1234yf和R290主要热力学性质预测可靠性。结果表明,GCM对R1234yf/R290包括理想气体比热容、气化热、蒸气压在内的常用参数预测值平均相对百分比误差分别为5.56%/1.62%、7.96%/0.59%、5.08%/2.15%,说明GCM具有很高的可靠性与预测精度。R1234yf and R290,as new environmentally friendly refrigerants,have attracted wide attention and become promising alternative refrigerants.In many occasions,especially in the coupling process of refrigerant and refrigeration system,a continuous mathematical model is often needed to accurately calculate its thermodynamic parameters.Therefore,this paper has explored and verified the reliability of Group-contribution method(GCM) in predicting the main thermodynamic properties of R1234yf and R290.Results from GCM show that the average relative percentage errors of ideal gas specific heat capacity,vaporization heat,vapor pressure of R1234yf/R290 are 5.56%/1.62%,7.96%/0.59% and 5.08%/2.15%,which proves that GCM is highly reliable and precise.

关 键 词：基团贡献法 制冷剂 R1234yf R290 预测精度 

分 类 号：TB64[一般工业技术—制冷工程]