modelDryCooler
Extends from Buildings.Fluid.HeatExchangers.CoolingTowers.BaseClasses.CoolingTowerVariableSpeed.
Information
Model for a steady-state or dynamic dry cooling tower with a variable speed fan using epsilon-NTU method for heat transfer.
Thermal performance
To compute the thermal performance, this model takes as parameters the nominal cooling capacity, air dry-bulb temperature, and cooling fluid (water or glycol) inlet and outlet temperatures as specified in the data record Buildings.Fluid.HeatExchangers.CoolingTowers.Data.DryCooler.Generic. The cooling tower performance is modeled using the effectiveness-NTU relationship for a crossflow configuration.
Changes in convective heat transfer coefficient on the coolant-side and the air-side due to change in flow rate and temperature are taken into account using the model Buildings.Fluid.HeatExchangers.BaseClasses.HADryCoil. This correction can be configured in the data record Buildings.Fluid.HeatExchangers.CoolingTowers.Data.DryCooler.Generic.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.Fluid.HeatExchangers.CoolingTowers.Data.DryCooler.Generic | dat | Performance data record | |
| Modelica.Units.SI.ThermalConductance | UA_nominal | per.UA_nominal | Thermal conductance at nominal flow, used to compute heat capacity |
| Real | eps_nominal | per.eps_nominal | Nominal heat transfer effectiveness |
| Real | NTU_nominal | per.NTU_nominal | Nominal number of transfer units |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Blocks.Interfaces.RealInput | TDryBul | Entering air dry bulb temperature |
Revisions
-
April 21, 2026, by Michael Wetter:
First implementation.