Can the binary interaction parameters of the thermodynamic equation, derived from gas-liquid equilibrium data measured at atmospheric pressure, be applied to negative pressures...
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I have a question for my friends: Can the binary interaction parameters derived from the thermodynamic equations, obtained by analyzing gas-liquid equilibrium data measured at atmospheric pressure, be applied to the simulation of systems under negative or positive pressure? If not, is it necessary to determine the gas-liquid equilibrium data at the operating pressure and use it for simulation calculations after regression? I look forward to your advice, friends. Thank you! ! !
It is possible, because when the pressure is not high, its effect on the behavior of the liquid phase is minimal and can be ignored; the activity coefficient model does not take into account the influence of pressure on the vapor-liquid equilibrium behavior.
By \"low pressure,\" it is generally meant that the system pressure is no higher than 10 atm (as stated by ASPEN). Data obtained under normal pressure can be used for negative pressures without issue, while for positive pressures, it depends on how high the system pressure can reach.
Thank you very much for your answer. I have learned from it. May I ask if there are any books or literature available as a reference on gas-liquid phase equilibrium? Thank you
How should pressure compensation be handled?
It is available to every undergraduate; in the textbook \"Thermodynamics of Chemical Engineering\", it is covered under topics such as \"Thermodynamic Properties of Fluid Mixtures\" or \"Thermodynamic Properties of Solutions\" or \"Thermodynamic Properties of Homogeneous Open Systems\" – the names vary depending on the textbook.