Measurements of the thermal conductivity of gases and gas mixtures, methods and results

First-Principles Calculation of the Cross Second Virial Coefficient and the Dilute Gas Shear Viscosity, Thermal Conductivity, and Binary Diffusion Coefficient of the (H2O + N2) System

“…In Figure , we show the comparison of the calculated values for the dilute gas thermal conductivity with the four available experimental data sets for the mixture. − Timrot and Vargaftik performed thermal conductivity measurements using the hot-wire technique at 338 and 603 K. While their data at 338 K exhibit maximum deviations of only +1.7% and capture the mole fraction dependence of our computed values well, their data at 603 K deviate by up to +6.0% with a pronounced mole fraction dependence of the deviations. Dijkema et al employed a hot-wire apparatus and a thermistor katharometer bridge to measure the thermal conductivity at 298 and 333 K. Their data deviate by at most +3.6% and vary relatively smoothly with mole fraction. At 298 K, the mole fraction dependence of their data agrees well with that of the calculated values.…”

“…data at 338 K exhibit maximum deviations of only +1.7% and capture the mole fraction dependence of our computed values well, their data at 603 K deviate by up to +6.0% with a pronounced mole fraction dependence of the deviations. Dijkema et al 59 employed a hot-wire apparatus and a thermistor katharometer bridge to measure the thermal conductivity at 298 and 333 K. Their data deviate by at most +3.6% and vary relatively smoothly with mole fraction. At 298 K, the mole fraction dependence of their data agrees well with that of the calculated values.…”

Calculation of the transport and relaxation properties of dilute water vapor

“…In order to obtain the experimental value of thermal conductivity at zero density either isothermal values as a function of density were extrapolated to this limit or individual values at low density were corrected to it using the density dependence of the Revised IAPS 1998 correlation. 63 The hot-wire ͑HW͒ method, [64][65][66][67][68][69]71,73,80,83,84,89,91 the concentric-cylinder ͑CC͒ method, 68,70,72,[74][75][76][77][78][79]81,85,87,90,93 the parallel-plate method, 86,88 and the transient HW ͑THW͒ technique 94 were employed in performing the measurements on water vapor and steam. In principle, the uncertainties achieved with these experimental techniques decrease along this series of methods towards the THW method.…”

A Review of Experimental Researches on the Thermophysical Properties of Hydrogen-Containing Mixtures at High Temperatures and High Pressures

“…There are several methods for the thermal conductivity measurement of fluids such as hydrogen, carbon dioxide, water, and their mixtures, mainly including the parallel-plate method, − the coaxial cylinder method, − the hot-wire method, − and the katharometer method. , The previous experimental thermal conductivity data for hydrogen-containing mixtures are briefly summarized in Table S3 in the Supporting Information. It can be seen that the hot-wire method is mostly used at high temperatures.…”