Boiler simulation

1 inlet (feedwater) -> 1 outlet (steam)

Governing equations

The exact equations the solver works for a boiler — the same math shown in the app's "Theory" panel, not a black box.

$Q_{abs}$

heat absorbed by the water [W]

$Q_{fired}$

fuel heat input [W]

$F$

molar flow [mol/s]

$h_{steam}$

outlet steam enthalpy [J/mol]

$h_{feed}$

feedwater enthalpy [J/mol]

$\eta$

boiler efficiency (fired->absorbed)

$T_{sat}(P)$

saturation temperature at the outlet pressure [K]

$\Delta T_{superheat}$

degrees of superheat above saturation [K]

Parameters

outlet_pressure [Pa, default inlet]; outlet is saturated steam unless superheat [K] or outlet_temperature [K] is given; efficiency [0-1, default 0.85] fired->absorbed. Reports duty [W absorbed], fired_duty [W]. Use SteamPkg/IAPWS thermo

Example flowsheets that use it