The outlet water temperature is calculated by adding the temperature rise to the inlet water temperature. The temperature rise is determined by the energy transferred from the condensing steam (enthalpy difference) divided by the heat capacity of the water. Water specific heat is physics::si::kSpecificHeatWater (4.1796 kJ/(kg·K)).

\begin{equation}\label{eq:water-heating-steam-outlet-temp} T_{w,out} = T_{w,in} + \frac{(h_{s,in} - h_{s,out}) \cdot \dot{m}_{steam}}{C_{p,w} \cdot 1000 \cdot \dot{V}_{water}}\end{equation}

Symbols

\(T_{w,out}\)	Outlet water temperature \([\unit{ \kelvin}]\)
\(T_{w,in}\)	Inlet water temperature \([\unit{ \kelvin}]\)
\(h_{s,in}\)	Inlet steam specific enthalpy (saturated vapor) \([\unit{ \kilo\joule\per\kilogram}]\)
\(h_{s,out}\)	Outlet steam specific enthalpy (saturated liquid/condensate) \([\unit{ \kilo\joule\per\kilogram}]\)
\(\dot{m}_{steam}\)	Steam mass flow rate \([\unit{ \kilogram\per\hour}]\)
\(C_{p,w}\)	Water specific heat - see physics::si::kSpecificHeatWater \([\unit{ \kilo\joule\per\kilogram\kelvin}]\)
\(\dot{V}_{water}\)	Water volumetric flow rate \([\unit{ \meter\cubed\per\hour}]\)