Standard Cubic Feet per Hour Formula

The standard cubic feet per hour is calculated by adjusting the actual volumetric flow rate for temperature to obtain flow at standard conditions (60°F, 1 atm).

\begin{equation}\label{eq:leakage-scfh} \text{SCFH} = \text{CFH} \cdot \sqrt{\frac{520}{460 + T_{\text{leak}}}}\end{equation}

Symbols

\(\text{SCFH}\)	Standard cubic feet per hour of leakage \([\unit{ \cubicFoot\per\hour}]\)
\(\text{CFH}\)	Volumetric flow rate of leakage \([\unit{ \cubicFoot\per\hour}]\)
\(520\)	Standard gas temperature - see physics::us::kStandardGasTemperatureR \([\unit{ \degreeRankine}]\)
\(460\)	Fahrenheit to Rankine offset - see physics::conversions::kFahrenheitToRankineOffset \([\unit{ \degreeRankine}]\)
\(T_{\text{leak}}\)	Temperature of leaking gases \([\unit{ \degreeFahrenheit}]\)