【摘要】 <正> 由于在临界点的饱和区范围,气体的压缩系数Z值有最大的误差,所以Lydersen和Meissner等分别创议,将Z_e作为除对比压力P_r与对比温度T_r外的第三参数,其定义为更多还原

【Abstract】 Substituting the average value of correlations for predicting Tc of non-hydrocarbons and the correlations for predicting Pc and Vc into the criticalcompressibility faobor definition equation, Zc= leads to the following corre-lation for estimating Zc asBy combining the experimental values of 333 non-hydrocarbons’ critical compressibility factors and the method of least square regression, we obtain the correlation for predicting Zc as follows更多还原