在纯物质常沸点汽化热的剩余函数预测法的基础上,结合并改进W-S方程,推导出预测纯物质在任一温度下的汽化热的新方程。由最基本的物性数据T_b,T_c,P_c,预测245种各类物质7574个温度点的汽化热,与实验值相比较的总绝对平均误差为1.77％,优于原剩余函数法。 Based on the prediction of the residual function of the boiling point of the pure substance and the W-S equation, a new equation for predicting the heat of vaporization of the pure substance at any temperature is derived. From the most basic physical data T_b, T_c and P_c, the heat of vaporization of 7574 temperature points of 245 kinds of various kinds of materials is predicted. The total absolute mean error compared with the experimental data is 1.77%, which is better than the original residual function method.