Benedict-Webb-Rubin PVT equation
Input(s)
R: Gas Constant (BTU/mol psi K)
\(\mathrm{T}\): Temperature \((\mathrm{K})\)
\(\rho\): Density \((\mathrm{g} / \mathrm{cc})\)
A: Correlation Constant (dimensionless)
B: Correlation Constant (dimensionless)
C: Correlation Constant (dimensionless)
a: Correlation Constant (dimensionless)
b: Correlation Constant (dimensionless)
c: Correlation Constant (dimensionless)
\(\alpha\): Correlation Constant (dimensionless)
\(\gamma\): Correlation Constant (dimensionless)
Output(s)
P: Pressure (psi)
Formula(s)
\[
\begin{aligned}
\mathrm{P} & =\mathrm{R} * \mathrm{~T} * \rho+\left(\left(\mathrm{B} * \mathrm{R} * \mathrm{~T}-\mathrm{A}-\frac{\mathrm{C}}{\mathrm{T}^{2}}\right) *\left(\rho^{2}\right)\right)+\left(\rho^{3}\right) *(\mathrm{~b} * \mathrm{R} * \mathrm{~T}-\mathrm{a})+\mathrm{a} * \alpha *\left(\rho^{6}\right)+\left(\mathrm{c} * \frac{\rho^{3}}{\mathrm{~T}^{2}}\right) *\left(1+\gamma *\left(\rho^{2}\right)\right) \\
& * \exp \left((-1) * \gamma *\left(\rho^{2}\right)\right)
\end{aligned}
\]
Reference(s)
John M. Campbell, Gas Conditioning and Processing, Campbell Petroleum Series, Oklahoma, 1992, Vol. 1, Page: 48.