modelCoolingCoilHumidifyingHeating_OpenLoop
Model of a air handling unit that tests variable mass flow rates
Extends from Modelica.Icons.Example, Buildings.Applications.DataCenters.ChillerCooled.Equipment.Validation.BaseClasses.PartialAirHandlerMassFlow.
Information
This model demonstrates the use of Buildings.Applications.DataCenters.ChillerCooled.Equipment.CoolingCoilHumidifyingHeating for different inlet conditions.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.ThermalConductance | UA_nominal | m2_flow_nominal*1006*(12 - 26)/Buildings.Fluid.HeatExchangers.BaseClasses.lmtd(T_a1_nominal, T_b1_nominal, T_a2_nominal, T_b2_nominal) | Thermal conductance at nominal flow for sensible heat, used to compute time constant |
| Real | yValMin | 0.4 | Minimum position of water-side valves |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.Applications.DataCenters.ChillerCooled.Equipment.CoolingCoilHumidifyingHeating | ahu | Air handling unit | |
| Buildings.Fluid.Sensors.RelativeHumidityTwoPort | senRelHum | Sensor for relative humidity | |
| Modelica.Blocks.Sources.Constant | uVal | Control signal for water valve | |
| Modelica.Blocks.Sources.Constant | temSet | Temperature setpoint | |
| Modelica.Blocks.Sources.Constant | XSet | Mass fraction set point | |
| Modelica.Blocks.Sources.Constant | uFan | Control input for fan |
Revisions
-
May 13, 2021, by Michael Wetter:
Set start value of valve to avoid unreasonably large pressure drop due to prescribed mass flow rate that was forced through a closed valve.
This is for #2488. -
April 11, 2017, by Yangyang Fu:
First implementation.