Aggregate contributions from each fuel constituent to determine total fuel properties and combustion products. The generated weights account for stoichiometry and excess air.

\begin{equation}\label{eq:gas-flue-gas-material-co2-gen-wt-cpp} W_{CO_2} = \sum_i x_i \cdot w_{CO_2,i}\end{equation}

\begin{equation}\label{eq:gas-flue-gas-material-h2o-gen-wt-cpp} W_{H_2O} = \sum_i x_i \cdot w_{H_2O,i} + \text{combustion air moisture}\end{equation}

\begin{equation}\label{eq:gas-flue-gas-material-o2-gen-wt-cpp} W_{O_2} = \text{from excess air}\end{equation}

\begin{equation}\label{eq:gas-flue-gas-material-n2-gen-wt-cpp} W_{N_2} = \text{from air fraction}\end{equation}

Symbols

\(W_{i}\)	Generated weight of constituent i \([\unit{ \pound\per\MMBtu}]\)
\(x_i\)	Volume fraction of fuel constituent i \([\unit{ \unitless}]\)
\(w_{i,j}\)	Weight of product j generated per unit of fuel constituent i \([\unit{ \pound\per\cubicFoot}]\)