The Soave-Redlich-Kwong 1 equation of state is a modification of the original EOS by Redlich and Kwong (RK) from 1949 2. The SRK EOS is a common cubic EOS used in many areas of petroleum and chemical engineering.

In physics and thermodynamics, the Redlich–Kwong equation of state is an empirical, algebraic equation that relates temperature, pressure, and volume of gases. It is generally more accurate than the van der Waals equation and the ideal gas equation at …

Due to its simplicity and reasonable accuracy, the Soave-Redlich-Kwong (SRK) equation of state (EoS), proposed by Soave (1972), is one of the most popular EoS in simulations and optimizations in which vapor-liquid equilibrium (VLE) properties are required (Valderrama, 2003). The SRK EoS uses cubic Eq.

In 1972, Soave proposed an important modification to the RK EOS — or shall we say, a modification to vdW EOS. Between the time of vdW EOS and Redlich-Kwong’s, a new concept for fluid characterization was being discussed. Pitzer had introduced the …

2023年3月1日 · The SRK EOS was a breakthrough for process design calculations in the chemical industry. Even though in 1972 Soave focused mainly on vapor-liquid equilibria (VLE) calculations for non-polar (or slightly polar) mixtures, in later years and still today the SRK EOS is used for phase equilibria and applications rather different from those for which ...

2017年7月30日 · rk eos 是后来许多立方型状态方程的先驱。 Redlich-Kwong 状态方程（RK EOS, 1949） 自vdW EOS 问世后，第一个出现的立方型状态方程就是Redlich 和Kwong 1949年提出的著名的RK EOS * * Redlich, O. and Kwong, J. N. S. (1949), “On the thermodynamics of solutions”, Chem. Rev., 44, 233-244

2017年6月1日 · PR and SRK EOS were critically compared with each other using some new features. PR EOS by any of realistic α-functions will never be able to predict the JTICs. The success of PR EOS in predicting liquid density is due to shifting SRK’s result. To develop equations of state, the SRK is a better candidate than PR.

In 1972, Soave proposed an important modification to the RK EOS — or shall we say, a modification to vdW EOS. Between the time of vdW EOS and Redlich-Kwong’s, a new concept for fluid characterization was being discussed. Pitzer had introduced the …

In this work, a modified Soave-Redlich-Kwong (m-SRK) EOS is proposed for modeling the fluid phase behavior in nanopores. Three parameters, including the fluid distribution coefficient, relative effective molecular volume coefficient, and nano-confined index, are defined to revise the molar volume term in the SRK EOS.

Serve similar functions as the Redlich Kwong EOS but require more parameters. PR obtains better liquid densities than SRK. Overall, PR does a better job (slightly) for gas and condensate systems than SRK. However, for polar systems, SRK always makes a better prediction, but in the petroleum engineering business we do not usually deal with those.