modelAirsideEconomizer
Example that demonstrate the use of model
Buildings.Applications.DataCenters.DXCooled.Controls.AirsideEconomizer
Extends from Modelica.Icons.Example (Icon for runnable examples).
Information
This example demonstrates how the outside air damper position changes under different cooling mode. During the first 120s, the system is in free cooling mode, and the damper position is controlled to maintain the mixed air temperature at its setpoint. In the second 120s, the system is in partial mechanical cooling mode and the outside air damper is fully open. As a result, the mixed air temperature is equal to the outdoor air temperature. In the last 120 seconds, the system is in fully mechnical cooling mode, which means the outside air damper is fully closed, and the mixed air temperature equals to the return air temperature.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.MassFlowRate | mA_flow_nominal | 0.43 | Nominal air flowrate |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.Applications.DataCenters.DXCooled.Controls.AirsideEconomizer | con | Outdoor air damper controller | |
| Modelica.Blocks.Sources.Constant | mixAirSetPoi | Mixed air temperature setpoint | |
| Modelica.Blocks.Sources.CombiTimeTable | cooMod | Cooling mode signal | |
| Buildings.Fluid.Sources.Boundary_pT | OA | Boundary conditions for outside air | |
| Buildings.Fluid.Actuators.Dampers.MixingBox | eco | Airside economizer | |
| Buildings.Fluid.Sensors.TemperatureTwoPort | senTemMixAir | Temperature sensor for mixed air | |
| Buildings.Fluid.Sources.Boundary_pT | roo | Boundary conditions for room air | |
| Modelica.Blocks.Sources.CombiTimeTable | outAir | Outdoor air temperature | |
| Buildings.Fluid.Sources.Boundary_pT | supAir | Boundary conditions for supply air | |
| Modelica.Blocks.Math.RealToInteger | reaToInt | Conversion from real to integer |
Contents
| Name | Description |
|---|---|
 Medium |
Revisions
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August 29, 2017 by Yangyang Fu:
First implementation.