Excess Air and Flue Gas O2

The relationship between excess air and flue gas oxygen content allows determination of one from the other. See Gas Composition for detailed formulas.

O2 from Excess Air

\begin{equation}\label{eq:gas-flue-gas-material-excess-air-cpp} O_2 = f_{O_2}(EA)\end{equation}

Excess Air from O2

\begin{equation}\label{eq:gas-flue-gas-material-excess-air-cpp-2} EA = f_{EA}(O_2)\end{equation}

Symbols

\(EA\)	Excess air percent \([\unit{ \percent}]\)
\(O_2\)	Flue gas oxygen percentage \([\unit{ \percent}]\)
\(f_{O_2}(EA)\)	Function to estimate O2 from excess air - see O2 Percentage From Excess Air Formula \([\unit{ \unitless}]\)
\(f_{EA}(O_2)\)	Function to estimate excess air from O2 - see Estimate Excess Air From O2 Formula \([\unit{ \unitless}]\)