modelBaseCase
Base case model used for the validation of the FMI interfaces
Extends from Buildings.Examples.Tutorial.SpaceCooling.System3 (Third part of the system model with air supply and closed loop control).
Information
This example is the base case model which is used to validate the coupling of a convective thermal zone with an air-based HVAC system.
It is based on Buildings.Examples.Tutorial.SpaceCooling.System3, and it assign some parameters to have the same configuration as Buildings.Fluid.FMI.ExportContainers.Examples.FMUs.HVACZone.
The model which is validated using this model is Buildings.Fluid.FMI.ExportContainers.Validation.RoomHVAC .
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.Volume | V (from System3) | 6*10*3 | Room volume |
| Real | eps (from System3) | 0.8 | Heat recovery effectiveness |
| Modelica.Units.SI.Temperature | TASup_nominal (from System3) | 291.15 | Nominal air temperature supplied to room |
| Modelica.Units.SI.DimensionlessRatio | wASup_nominal (from System3) | 0.012 | Nominal air humidity ratio supplied to room [kg/kg] assuming 90% relative humidity |
| Modelica.Units.SI.Temperature | TRooSet (from System3) | 297.15 | Nominal room air temperature |
| Modelica.Units.SI.Temperature | TOut_nominal (from System3) | 303.15 | Design outlet air temperature |
| Modelica.Units.SI.Temperature | THeaRecLvg (from System3) | TOut_nominal - eps*(TOut_nominal - TRooSet) | Air temperature leaving the heat recovery |
| Modelica.Units.SI.DimensionlessRatio | wHeaRecLvg (from System3) | 0.0135 | Air humidity ratio leaving the heat recovery [kg/kg] |
| Modelica.Units.SI.HeatFlowRate | QRooInt_flow (from System3) | 1000 | Internal heat gains of the room |
| Modelica.Units.SI.HeatFlowRate | QRooC_flow_nominal (from System3) | -QRooInt_flow - 10E3/30*(TOut_nominal - TRooSet) | Nominal cooling load of the room |
| Modelica.Units.SI.MassFlowRate | mA_flow_nominal (from System3) | 1.3*QRooC_flow_nominal/1006/(TASup_nominal - TRooSet) | Nominal air mass flow rate, increased by factor 1.3 to allow for recovery after temperature setback |
| Modelica.Units.SI.TemperatureDifference | dTFan (from System3) | 2 | Estimated temperature raise across fan that needs to be made up by the cooling coil |
| Modelica.Units.SI.HeatFlowRate | QCoiC_flow_nominal (from System3) | mA_flow_nominal*(TASup_nominal - THeaRecLvg - dTFan)*1006 + mA_flow_nominal*(wASup_nominal - wHeaRecLvg)*2458.3e3 | Cooling load of coil, taking into account outside air sensible and latent heat removal |
| Modelica.Units.SI.Temperature | TWSup_nominal (from System3) | 285.15 | Water supply temperature |
| Modelica.Units.SI.Temperature | TWRet_nominal (from System3) | 289.15 | Water return temperature |
| Modelica.Units.SI.MassFlowRate | mW_flow_nominal (from System3) | -QCoiC_flow_nominal/(TWRet_nominal - TWSup_nominal)/4200 | Nominal water mass flow rate |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| BoundaryConditions.WeatherData.Bus | weaBus (from System3) |