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根据蒸气压关系式，提出了一种适用于推算CFCs乙烷系替代物及其它乙烷系氟里昂饱和蒸气压的基团贡献法。利用该方法在已知临界温度和临界压力的情况下可以对所有乙烷系氟里昂的饱和蒸气压进行推算，推算的平均偏差在0．5%左右，最大偏差不超过1％，可满足CFCs替代物研究和冰箱及空调或压缩机设计应用的需要。
Based on the vapor pressure relationship, a group contribution method suitable for estimating ethane-based substitutes for CFCs and other saturated vapor pressures of ethane-based freons was proposed. Using this method, the saturated vapor pressures of all ethane-based freons can be deduced with the known critical temperature and critical pressure. The average deviation of the estimation is about 0.5% and the maximum deviation is less than 1%, which can meet the requirements of CFCs Research on alternatives and the need for refrigerator and air conditioning or compressor design applications.