The Enskog theory of the thermal conductivities of liquids is improved by replacing the pressure of the system by the thermal pressure. The dependence of the molecular hard sphere diameter on the number of carbon atom...The Enskog theory of the thermal conductivities of liquids is improved by replacing the pressure of the system by the thermal pressure. The dependence of the molecular hard sphere diameter on the number of carbon atoms in each nalkane molecule is introduced. The thermal pressures and molar volumes of liquid n-alkanes are calculated by using PengRobinson equation of state. The modified Enskog theory has been used to predict the thermal conductivities of 12 liquid n-alkanes. The total average relative standard deviation of the thermal conductivities between the predicted and the experimeatal data is 5.2%. This precision is acceptable.展开更多
文摘The Enskog theory of the thermal conductivities of liquids is improved by replacing the pressure of the system by the thermal pressure. The dependence of the molecular hard sphere diameter on the number of carbon atoms in each nalkane molecule is introduced. The thermal pressures and molar volumes of liquid n-alkanes are calculated by using PengRobinson equation of state. The modified Enskog theory has been used to predict the thermal conductivities of 12 liquid n-alkanes. The total average relative standard deviation of the thermal conductivities between the predicted and the experimeatal data is 5.2%. This precision is acceptable.