1 research outputs found
Derivative Properties from High-Precision Equations of State
In
this study, the behavior of derivative properties estimated
by equations of state, including isochoric heat capacity, isobaric
heat capacity, speed of sound, and the Joule–Thomson coefficient
for pure compounds and a mixture, has been investigated. The Schmidt–Wagner
and Jacobsen–Stewart equations of state were used for predictions
of derivative properties of 10 different pure compounds from various
nonpolar hydrocarbons, nonpolar cyclic hydrocarbons, polar compounds,
and refrigerants. The estimations were compared to experimental data.
To evaluate the behavior of mixtures, the extended corresponding states
principle (ECS) was studied. Analytical relationships were derived
for isochoric heat capacity, isobaric heat capacity, the Joule–Thomson
coefficient, and the speed of sound. The ECS calculations were compared
to the reference surface data of methane + ethane. The ECS principle
was found to generate data of high quality