Cooling tower simulation

1 inlet (hot water) -> 1 outlet (cold water)

Governing equations

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

$Q_{rej}$

heat rejected to ambient [W]

$F$

circulating-water flow [mol/s]

$h_{hot}$

hot-water enthalpy [J/mol]

$h_{cold}$

cold-water enthalpy [J/mol]

$\dot m_{evap}$

evaporation loss [mol/s]

$\lambda$

latent heat of vaporization

$\dot m_{blowdown}$

blowdown loss [mol/s]

$N_{cyc}$

cycles of concentration [-]

$\dot m_{makeup}$

makeup water = evaporation + blowdown [mol/s]

Parameters

outlet_temperature [K, required, < inlet]; optional latent_heat [J/mol, default 40700] and cycles_of_concentration [-, default 4]. Reports heat_rejected, evaporation_rate, makeup_rate. Opt-in Merkel/NTU sizing: wet_bulb_temperature [K] + l_over_g [-] add the tower characteristic KaV/L, approach, and range

Example flowsheets that use it