【摘要】 根据Riedel蒸汽压方程和偏心因子的定义式,导出了物质偏心因子关联式;利用新关联式计算了20类366种物质的偏心因子,将计算值平均误差与文献上各种偏心因子关联式的平均误差进行了比较;论述了以物质偏心因子作为第3参数在三参数对应态原理的应用;例举了计算实例。结果表明,本文关联式对于文献数据的总平均误差为3.728%,计算准确值优于文献关联式。更多还原

【Abstract】 Based on Riedel vapor pressure equation and defining equation of eccentric factor a correlation of eccentric factor of matter was derived;by use of new correlation,366 kinds in 20 categories of matter eccentric factors have been calculated,comparison was made between the average error of this calculated value and the average error obtained from the correlation of various eccentric factors from literature;it was discussed that the eccentric factor of matter taking as third parameter was applied in corresponding state principle with three parameters;calculating example was listed.The result indicates that the total average error of the correlation in this paper is 3.728% against that of data from literatures.The calculated value from the correlation in this paper is more accurate than that calculated from literature.更多还原