The flow rate is calculated by combining the orifice area, adjusted discharge coefficient, and all correction factors. This represents the gas flow rate at standard conditions (60°F, 1 atm).

\begin{equation}\label{eq:flow-calculations-flow-rate} \dot{V} = A \cdot C_{d,adj} \cdot \Delta P_{norm} \cdot f_T \cdot f_P\end{equation}

Symbols

\(\dot{V}\)	Volumetric flow rate \([\unit{ \scf\per\hour}]\)
\(A\)	Orifice area \([\unit{ \squareInch}]\)
\(C_{d,adj}\)	Adjusted discharge coefficient \([\unit{ \unitless}]\)
\(\Delta P_{norm}\)	Normalized pressure drop \([\unit{ \inchWaterColumn}]\)
\(f_T\)	Temperature adjustment factor \([\unit{ \unitless}]\)
\(f_P\)	Pressure adjustment factor \([\unit{ \unitless}]\)