由饱和容积性质获取三参数范德华型状态方程的参数

本文认为使用由纯流体实际的饱和容积数据拟合的三个（温度）可调参数的立方型方程，可 以提高推算流体临界点附近区域的容积精度．文章提出了由纯流体饱和容积性质获取范德华型方 程参数的普遍化计算方法．所提出的计算方法物理意义明了，计算简便．文章还用纯ＣＯ２饱和容 积性质数据处理Ｐ－Ｔ和Ｍａｒｔｉｎ的方程．进一步说明此法获取状态方程参数的过程．

Calculation of Parameters for 3-Parameter VDW Type EOS From Saturated Volume Data of Fluids

This paper studied a new general method, with clear physical meaning and easy op- eration, for obtaining three adjustable parameters of VDW-type's EOS from pure substance's saturated volume data. This 3-para-meter EOS would predict the volume propertied near the critical vegion more accurately. This method was used as an example to estimate the parameters or P-T EOS and Martin EOS, respectively, according to saturated volume data of CO2.