精确计算液体醇在任一温度下的汽化热公式

根据分子热力学理论导出的计算常沸点下的汽化热理论方程,考虑Watson公式的不足之处,提出计算醇类在任一温度下的汽化热的新方程,经用初级,中级、高级醇和环醇等化合物的185个实验数据点检验,平均误差1.12％,极显著优于美国工程院院士John M.Prausnitz教授在其专著中推荐的Watson公式,对化工特别是精细化工设计常用的烷醇,环烷醇而言,本法的精度比在国际科技界获得最广泛应用的Watson式高大约3.5倍。

A precise method for calculating the heat of vaporization of liquid alcohols at the different temperatures

The drawbacks of the Watson's equation for estimating the heat of vaporization of liquid alcohols at the different temperatures is analyzed. According to the molecular thermodynamic theory and taking into consideration the interactions among of molecules and restrictions in pure substances, a new formula is proposed. To check this equation, 183 experimented values including in primary, intermediate, senior alcohols and cycloalkanol were used with an average error of 1.12%. This method is far better than the other methods reported in literautre, such as this method's accuracy is over 3.5 times higher than that of the famous Watson's method.