Thermodynamic and Thermophysical Properties of Dry Air by Using Cubic Peng-Robinson EoS for Gas Mixtures

Abstract

Dry air is one of the most used gases in industrial and technological applications. In dry air thermodynamic property calculations, it is usually ideal gas EoS is used. The basic reason for this is the simplicity of using ideal gas EoS. For most applications, it might be sufficient, but when applications with higher pressure zones are considered error level will increase. An equation of state with better accuracy of thermodynamic properties will be required for extreme cases. Therefore, Peng-Robinson cubic equation of states (EoS) for dry air is considered in this paper. Set of computer programs were developed in java language in order to calculate thermodynamic and thermophysical properties of dry air and compared with perfect gas EoS and EoS developed by The International Association for the Properties of Water and Steam (IAPWS).

Keywords

• Thermodynamic properties of dry air, thermophysical properties of dry air,Peng-Robison EoS

References

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