Flue Gas Mass Flow Formula

The flue gas mass flow rate is calculated using the total generated flue gas (from gas composition and combustion analysis), boiler rating, and fuel higher heating value. The density conversion factor physics::conversions::kLbPerFt3ToKgPerM3 (16.018463 kg/m³ per lb/ft³) is applied.

\begin{equation}\label{eq:water-heating-flue-gas-mass-flow} \dot{m}_{flue} = \rho_{conv} \cdot Q_{gen} \cdot R_{boiler} \cdot \frac{10^{6}}{HHV_{fuel}}\end{equation}

Symbols

\(\dot{m}_{flue}\)	Flue gas mass flow rate \([\unit{ \kilogram\per\hour}]\)
\(\rho_{conv}\)	Density conversion factor - see physics::conversions::kLbPerFt3ToKgPerM3 \([\unit{ \kilogram\per\meter\cubed\per\pound\per\foot\cubed}]\)
\(Q_{gen}\)	Total generated flue gas from combustion \([\unit{ \pound\per\foot\cubed}]\)
\(R_{boiler}\)	Boiler rating \([\unit{ \giga\joule\per\hour}]\)
\(HHV_{fuel}\)	Fuel higher heating value \([\unit{ \kilo\joule\per\normalCubicMeter}]\)