0507476h said:Hi,
Anyone know where I can find thermodynamic properties of gases at high pressure? More specifically I need to find the kinematic viscosity or the absolute viscosity of air at around 300 degrees Kelvin and 330 bar.
Cheers
stewartcs said:Air @ 300 K and 330 bar:
Kin. Viscosity = 0.00000090477 (ft²/s)
CS
0507476h said:Thank-you for this, could you tell me how you calculated/where you found this data? Just so I can do it for myself in future as I reckon I will have a range of other pressures and temps to calculate kinematic viscosity for in future.
Thanks
The thermodynamic properties of high pressure gases can be described by various quantities such as temperature, pressure, volume, enthalpy, entropy, and internal energy. These properties determine the behavior and state of a gas under different conditions.
High pressure gases have a higher density and a smaller volume compared to low pressure gases at the same temperature. This is due to the increased molecular interactions and reduced space between particles in high pressure gases.
In high pressure gases, temperature and pressure are directly proportional to each other according to the ideal gas law. This means that as pressure increases, temperature also increases and vice versa, as long as the volume and number of moles of gas remain constant.
As pressure increases, the volume of a gas decreases, while the temperature and density increase. Additionally, the enthalpy and internal energy of a gas also increase with increasing pressure. However, the ratio of specific heats and the speed of sound in the gas remain constant.
High pressure gases are commonly used in various industrial processes such as gas compression, refrigeration, and power generation. They are also used in chemical reactions and as a medium for energy storage and transportation. Understanding the thermodynamic properties of high pressure gases is crucial for optimizing these processes and ensuring safety.