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Derivative properties from high-precision equations of state
Reza Haghbakhsh1, Morten Konttorp, Sona Raeissi
1School of Chemical and Petroleum Engineering, Shiraz University , Mollasadra Avenue, Shiraz 71345, Iran.
The Journal of Physical Chemistry. B
|October 28, 2014
Summary
This study investigated derivative properties using equations of state for pure compounds and mixtures. The extended corresponding states principle (ECS) accurately predicted mixture properties, showing high-quality data generation.
Area of Science:
- Thermodynamics
- Physical Chemistry
- Chemical Engineering
Background:
- Equations of state are crucial for predicting thermodynamic properties.
- Accurate estimation of derivative properties is essential for process design and safety.
- Evaluating mixture behavior requires robust predictive models.
Purpose of the Study:
- To investigate the behavior of derivative properties estimated by equations of state.
- To compare predictions from Schmidt-Wagner and Jacobsen-Stewart equations of state with experimental data.
- To evaluate the extended corresponding states principle (ECS) for mixture property predictions.
Main Methods:
- Utilized Schmidt-Wagner and Jacobsen-Stewart equations of state for pure compound property predictions.
- Applied the extended corresponding states principle (ECS) to analyze mixture behavior.
- Derived analytical relationships for key thermodynamic properties.
Main Results:
- The Schmidt-Wagner and Jacobsen-Stewart equations provided estimations for various pure compounds.
- ECS calculations were compared against reference surface data for methane + ethane mixture.
- The ECS principle demonstrated high-quality data generation for mixtures.
Conclusions:
- Equations of state effectively estimate derivative properties for pure compounds.
- The extended corresponding states principle (ECS) is a reliable method for predicting mixture properties.
- The study confirms the high accuracy of ECS in thermodynamic property estimations.
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