物质偏心因子的回归与关联

Regression and correlation of eccentric factor of matter

基于Lee-Kesler偏心因子关联式和由R iedel蒸汽压方程导出的偏心因子关联式具有相同数学形式的这种情况,为了探索准确性更高的关联式,采用这一数学形式,利用文献中的物质偏心因子数据,通过非线性回归和线性回归导出了文章的物质偏心因子关联式;应用该关联式计算了382种物质的偏心因子,总平均相对误差3.006%,该关联式计算准确性优于目前文献中的各种偏心因子关联式,是一种更准确有效的物质偏心因子估算方法。

On the purpose of arriving at more accurate correlation, a new correlation of eccentric factor of matter was presented in mathematic form by non-linear regression analysis and linear regression analysis of numerical value of eccentric factor in literature, based on that Lee-Kesler correlation of eccentric factor and correlation of eccentric factor derived from Riedel vapor pressures equation have the same mathematic form. The eccentric factors of 382 kinds of matter were calculated by the correlation. The total average relative error from eccentric factor value in literature is 3. 006%. This correlation is more accurate than correlation of eccentric factor in the current literature and is a more accurate and effective method for calculating eccentric factor of matter.