Abstract: By applying Zhang Kewu s theoretical equation to liquid thermal conductivity, a new equation for calculation of thermal conductivity of liquid hydrocarbon is derived. The average error of calculation from 362 experimental data , 76 compounds is 1.78% .Its accuracy is about 4.7 times that of Latini et al. method (only for calculated λL of hydrocarbons) , recommended by Reid et al. It is far better than existing equations in terms of firm theoretical basis.λh can be simply and accurately obtained by only knowing the molecular structure of pure hydrocarbons. This equation is definite in physical nature and is theoretically important and practically valuable.

摘要： 分析了国际化工领域著名的Latini等式的不足后,以张克武提出的气体不平衡状态理论方程导出的液体导热率理论方程和理论定则为依据,提出液体烃导热率方程;经用各类液体烃76种362个实验数据检验,平均误差1.78％,显著优于前人公式。有重要的理论意义与应用价值。