The feedwater heat capacity rate is the product of the mass flow rate and specific heat. The feedwater specific heat is calculated using an empirical polynomial fit in gas_constants::specificHeatFeedwater.

\begin{equation}\label{eq:water-heating-flue-feedwater-heat-capacity} \dot{C}_{fw} = C_{p,fw} \cdot \dot{m}_{fw}\end{equation}

Symbols

\(\dot{C}_{fw}\)	Feedwater heat capacity rate \([\unit{ \kilo\joule\per\hour\kelvin}]\)
\(C_{p,fw}\)	Feedwater specific heat \([\unit{ \kilo\joule\per\kilogram\kelvin}]\)
\(\dot{m}_{fw}\)	Feedwater mass flow rate \([\unit{ \kilogram\per\hour}]\)