Peng Robinson PVT equation

Input(s)

R: Gas Constant (BTU/psi K mol)

$\mathrm{T}$ : Temperature $(\mathrm{K})$

$\mathrm{V}$ : Volume $\left(\mathrm{ft}^{3}\right)$

a: Correlation Constant (dimensionless)

b: Correlation Constant (dimensionless)

P: Pressure $(\mathrm{psi})$

\mathrm{P}=\frac{\mathrm{R} * \mathrm{~T}}{\mathrm{~V}-\mathrm{b}}-\frac{\mathrm{a} * \mathrm{~T}}{\mathrm{~V} *(\mathrm{~V}+\mathrm{b})+\mathrm{b} *(\mathrm{~V}-\mathrm{b})}

John M. Campbell, Gas Conditioning and Processing, Campbell Petroleum Series, Oklahoma, 1992, Vol. 1, Page: 48