The Thermal Conductivity of Organic Vapors. The Relationship between Thermal Conductivity and Viscosity, and the Significance of the Eucken Factor

摘要: The thermal conductivities of thirty‐one polar and nonpolar organic vapors have been determined at pressures up to one atmosphere, over a temperature range from 40 160°C. relation between conductivity viscosity is discussed in terms the expression: K0MηCv0=f=ftransCvtrans+fintCvintCv0 where, following suggestion by Eucken, ratio f divided into separate components ftrans fint, corresponding different rates transfer translational ``internal'' (vibrational rotational) energies.Experimental values are not accord with Eucken's original assumption that fint=1. For fint increases towards high‐temperature limit which close theoretical value 1.3. appears be less than 2.5, decrease depending on character molecule. These results reference energy exchanges occurring during collisions complex molecules.