The thermal conductivity of argon at elevated densities

Abstract

The thermal conductivity coefficient λ of compressed argon has been measured with a parallel plate method described previously1). Measurements were carried out at 0°C, 25°C, 50°C and 75°C and at densities up to 680 amagat (pressures up to 2400 arm.). In addition values are given for the ratio K = λ/ηcυ, where η is the viscosity coefficient and cυ the specific heat at constant density. The experimental data for λ and η are confronted with the values predicted from the theory of Enskog.