Thermal Conductivity Measurements of Liquid and Dense Gaseous Methane
As part of a continuing program investigating the thermal conductivity of important industrial fluids, measurements were made on methane in the liquid and dense gaseous states. An absolute transient hot-wire apparatus  was used to obtain convection-free measurements at temperatures between 120 and 400 K at pressures from 25 to 700 bar. The maximum uncertainty in the results due to systematic and random errors in the apparatus and the measurement techniques was less than 1%. A gas-chromatographic analysis of methane samples revealed 99.33% methane, 0.56% nitrogen, 0.11% ethane, and traces of propane.
KeywordsThermal Conductivity Blackbody radIatIOn Thermal Conductivity Measurement Density Correlation Parasitic Heat
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