中文摘要：

在对比态原则下,作者发现混合工质饱和气体密度与其纯组分饱和气体密度的无量纲对比关系有同一化规律;同时,还寻找到利用纯组分的临界点密度与临界压力拟合混合工质临界点密度与临界压力的关系式,确立了混合工质的这两个特征参数。进而给出了计算混合制冷剂饱和气体密度的通用方程,该方程是隐式的。比较了文献中5种二元和三元混合工质的推算值与文献值,误差基本在±2%内。

英文摘要：

Based on the corresponding principle, it is found that the relationship between saturated vapor corresponding - density and corresponding- temperature for mixtures accorded with that for pure- components. Moreover, a methed was obtained to calculate the critical density and critical pressure of refrigerant mixtures by using the critical density and critical pressure of pure- components and thus the characteristic parameters, the critical density and critical pressure of refrigerant mixtures, were achieved. Then the generalized equation that is implicit and used to calculate saturated vapor density of refrigerant mixtures was proposed. In addition, the values calculated were compared with the values in literature for five ternary and binary refrigerant mixtures and their deviation is less than 2%.