Thermal Conductivity and Thermal Diffusivity of Liquid Aromatic Hydrocarbons Undistorted by Radiation Heat Transfer

The values of thermal conductivity and thermal diffusivity are measured for seven substances (benzene, toluene, $o$-$n$-$m$-xylenes, ethylbenzene, and isopropylbenzene) at temperatures $T = 293$–$593$ K and pressures $P = P_s$–$30$ MPa. The obtained values of thermal conductivity and thermal diffusivity differ from the reference values by not more than $15\%$. The generalizing dependences are given, which describe the thermal conductivity, thermal diffusivity, and heat capacity per unit volume of $n$-alkanes, alkenes, and aromatic hydrocarbons.