Van Der Waals PVT equation

Input(s)

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

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

a: Correlation Constant (dimensionless)

b: Correlation Constant (dimensionless)

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

Output(s)

R: Gas Constant (BTU/psi mol K)

Formula(s)

$$ \mathrm{R}=\frac{\left(\mathrm{P}+\frac{\mathrm{a}}{\mathrm{V}^{2}}\right) *(\mathrm{~V}-\mathrm{b})}{\mathrm{T}} $$

Reference(s)

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