Guildner Leslie A
Institute for Basic Standards, National Bureau of Standards, Washington, D.C. 20234.
J Res Natl Bur Stand A Phys Chem. 1975 Mar-Apr;79A(2):407-413. doi: 10.6028/jres.079A.005.
Accurate measurements of the thermal conductivities of Ar and He agree with the theoretical value of 2.5 ( = viscosity, = specific heat capacity at constant volume is a number slightly greater than 1 depending upon the intermolecular potential). Measurements of the thermal conductivities of N at 9.6 and 75 °C as a function of pressure up to 2.53 × 10 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 × 10 Pa.
对氩气和氦气热导率的精确测量结果与2.5的理论值相符（其中，μ为黏度，cv为定容比热容，γ是一个略大于1的数，取决于分子间势能）。在9.6℃和75℃下对氮气热导率随压力（最高达2.53×10帕斯卡）变化情况的测量，有助于评估其他关于稠密气体热导率测量的有效性。结果表明，氮气的过剩热导率（由压力导致的额外热导率）仅在0至700℃以及最高达1.3×10帕斯卡的压力范围内是氮气密度的函数。
