Thermal Conductivity of Gases. III. Some Values of the Thermal Conductivities of Argon, Helium, and Nitrogen from 0 °C to 75 °C at Pressures of 1 × 105 to 2.5 × 107 Pascals.
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引用次数: 8
Abstract
Accurate measurements of the thermal conductivities of Ar and He agree with the theoretical value of 2.5 ϕηcv (η = viscosity, cv = specific heat capacity at constant volume ϕ is a number slightly greater than 1 depending upon the intermolecular potential). Measurements of the thermal conductivities of N2 at 9.6 and 75 °C as a function of pressure up to 2.53 × 107 Pa help to appraise the validity of other measurements of the thermal conductivities of dense gases. The excess conductivity of nitrogen (the additional conductivity resulting from pressure) is shown to be a function of only the density of the nitrogen from 0 to 700 °C and pressures up to 1.3 × 108 Pa.
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