Online measurements of thermophysical properties of ideal gas mixture in pipes
Abstract:
When careful measurements of pipe flow properties are carried out, with the aim to generalize the special measurements so that they become valid for a whole class of flow, it is essential to know the local properties of the gas in advance. The appropriate property measurements need to be therefore carried out locally. How these quantities can be measured in this way is shown in the present paper. The results showed a good agreement between the values of density and viscosity for Air and carbon dioxide taken from experiment compared with literature values, where an error of 1.73% has been calculated in the measurements of viscosity for air. Measurements also showed that a thermal conductivity universal curve can be generated for different types of gases, the use of Air
and carbon dioxide as the working fluids had been employed in the generation of such curve with an error of 3%.
The results show that the experimental test setup used in this work succeeded to give a good agreement between theoretical and experimental data; this has proved that a simple test setup can be done to find instantaneous properties of gases and gas mixture such as viscosity and thermal conductivity.