modelAirvolumeMixed

Ideal-mixed air volume model for moist air
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Extends from BuildingSystems.Buildings.BaseClasses.AirvolumeGeneral (Generic air volume model).

Information

This is a model of an ideal-mixed air volume for moist air.

Parameters

TypeNameDefaultDescription
IntegernAirpaths (from AirvolumeGeneral)0Number of air paths
Modelica.Units.SI.VelocityvAir_constant0.0Air velocity
Modelica.Units.NonSI.Angle_degangleDegAir_constant0.0Direction of the air flow
General › Air volume geometry
BuildingSystems.Buildings.Types.GeometryTypegeometryType (from AirvolumeGeneral)BuildingSystems.Buildings.Types.GeometryType.FixedFixed (default) or flexible geometry
Modelica.Units.SI.VolumeV (from AirvolumeGeneral)1.0Air volume (if geometryType == Fixed)
General
IntegernSurfaces (from AirvolumeGeneral)1Number of surfaces, which enclose the air volume
IntegernAirElements (from AirvolumeGeneral)1Number of air elements, which are included in the air volume
Initialization
Modelica.Units.SI.Temperature[nAirElements]T_start (from AirvolumeGeneral)fill(293.15, nAirElements)Air temperature (start value)
Modelica.Units.SI.MassFraction[nAirElements]x_start (from AirvolumeGeneral)fill(0.005, nAirElements)Absolute air moisture (start value)
Modelica.Units.SI.MassmH2OLiq_start0.0Liquid water mass (start value)
General › Ports
IntegernHeatSources0Number of heat convective sources
IntegernMoistureSources0Number of moisture sources
Advanced › Data source
BuildingSystems.Buildings.Types.DataSourceTSouBuildingSystems.Buildings.Types.DataSource.CalculationData source for air temperature
Modelica.Units.SI.TemperatureT_constant293.15Constant air temperature (used if TSou=Parameter)
BuildingSystems.Buildings.Types.DataSourcexSouBuildingSystems.Buildings.Types.DataSource.CalculationData source for air moisture
Modelica.Units.SI.MassFractionx_constant0.005Vonstant air moisture (used if xSou=Parameter)

Connectors

TypeNameDefaultDescription
BuildingSystems.Interfaces.VolumeOutputV_internal (from AirvolumeGeneral)Air volume
BuildingSystems.Interfaces.VolumeInputV_in (from AirvolumeGeneral)Air volume from input
Modelica.Fluid.Vessels.BaseClasses.VesselFluidPorts_b[nAirpaths]airpathPorts (from AirvolumeGeneral)Flow ports of the air paths
BuildingSystems.Buildings.Interfaces.SurfaceToAirPorts[nSurfaces]toSurfacePorts (from AirvolumeGeneral)
BuildingSystems.Interfaces.Temp_KOutput[nAirElements]T (from AirvolumeGeneral)Air temperature
BuildingSystems.Interfaces.Moisture_absOutput[nAirElements]x (from AirvolumeGeneral)Absolute air moisture
BuildingSystems.Interfaces.PressureOutput[nAirElements]p (from AirvolumeGeneral)Air pressure
BuildingSystems.Interfaces.HeatPorts[nHeatSources]heatSourcesPortsHeat ports of the convective heat sources
BuildingSystems.Interfaces.MoisturePorts[nMoistureSources]moistureSourcesPortsMoisture ports of the moisture sources
BuildingSystems.Interfaces.Temp_KInputT_inPrediscribed external air temperature (used if TSou=Input)
BuildingSystems.Interfaces.Moisture_absInputx_inPrediscribed external air moisture (used if xSou=Input)

Components

TypeNameDefaultDescription
BuildingSystems.Types.RelativeHumidityphiRelative humidity of the air
Modelica.Units.SI.MassmH2OLiqLiquid water mass
BuildingSystems.Buildings.Airvolumes.MixingVolumeMoistAirairMixed air volume of moist air
Modelica.Thermal.HeatTransfer.Sensors.TemperatureSensorsenTem
Modelica.Blocks.Sources.RealExpressionpAir
Modelica.Thermal.HeatTransfer.Sources.PrescribedHeatFlowprescribedHeatFlow
Modelica.Blocks.Sources.RealExpressionQSum_flow
Modelica.Blocks.Sources.RealExpressionmWatSum_flow

Revisions

  • October 28, 2020 by Christoph Nytsch-Geusen:
    Adaptation zti IBPSA library.
  • May 23, 2015 by Christoph Nytsch-Geusen:
    First implementation.