Critical State Behavior of Van der Waal gases & Conformation to Nelson-Obert Characteristics [ READ ]
Aman M. Chogle, Hisham A. Maddah
Ideal gas law although widely used has restricted validity as it does not apply to gases which deviate from ideal conditions. Gases in a compressed state can no longer be described by ideal gas law. In this paper we discuss Van der Waal Equation of State which was proposed to account for the shortcomings of ideal gas law. We primarily discuss systems in which real gases are under equilibrium conditions. Compressibility factors for various substances are tabulated and the calculations are validated by accentuating conformance with Nelson-Obert standard compressibility chart. We also present the nature of pressure fluctuation curve with inversion temperatures which can facilitate designing of units meant for systems under phase equilibria.
Aman M. Chogle, Hisham A. Maddah
Ideal gas law although widely used has restricted validity as it does not apply to gases which deviate from ideal conditions. Gases in a compressed state can no longer be described by ideal gas law. In this paper we discuss Van der Waal Equation of State which was proposed to account for the shortcomings of ideal gas law. We primarily discuss systems in which real gases are under equilibrium conditions. Compressibility factors for various substances are tabulated and the calculations are validated by accentuating conformance with Nelson-Obert standard compressibility chart. We also present the nature of pressure fluctuation curve with inversion temperatures which can facilitate designing of units meant for systems under phase equilibria.
