modelPartialRoom
Extends from PartialRoomParams, AixLib.Fluid.Interfaces.LumpedVolumeDeclarations.
Information
This model provides a basic configuration of an air load, a replaceable parameter set for wall paramters and air exchange models that can be used to build up individual High-Order-Models for rooms.
The air load is modelled with a mixing volume providing a media model for the air inside the room and the energy and mass balances. It is possible to consider the water vapor balance for the indoor air humidity such as a substance balance to consider e.g. CO2-concentration in the room. For the default configuration substance and water vapor balance will not be considered.
Note: While the air exchange model for ventilated air provides also the water vapor exchange rate, the infiltration model and dynamic ventilation model only provide the thermal balance. Hence, no water vapor will be exchanged due to the infiltration or the dynamic ventilation model.
Note 2: The dynamic ventilation model provides a control algorithm defining an air exchange due to natural ventilation depending on the room and outdoor air temperature. It does not provide any physical background, but assumes an air exchange rate that can be set by the user. This model should be used with caution. The setting of its parameters may have high influence on the simulation results.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Air volume of room | |||
| Modelica.Units.SI.Volume | room_V | ||
| General › Ports | |||
| Integer | nPorts | 0 | Number of fluid ports |
| Trace Substances | |||
| Boolean | use_C_flow | false | Set to true to enable trace substances in the rooms air |
| Boolean | use_C_flow_input | true | Set to true to use an input connector for the trace substances. False indicates internal calculation |
| Moist Air | |||
| Boolean | use_moisture_balance | false | Set to true to enable moisture gain balance in the rooms air |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | thermRoom | ||
| Utilities.Interfaces.RadPort | starRoom | ||
| Components.DryAir.InfiltrationRate_DIN12831 | infiltrationRate | ||
| Modelica.Blocks.Interfaces.RealInput | AirExchangePort | ||
| Utilities.Interfaces.Adaptors.ConvRadToCombPort | thermStar_Demux | ||
| Components.MoistAir.VarMoistAirExchange | NaturalVentilation | ||
| Components.DryAir.DynamicVentilation | dynamicVentilation | ||
| Modelica.Thermal.HeatTransfer.Sensors.TemperatureSensor | Tair | ||
| Fluid.MixingVolumes.MixingVolumeMoistAir | airload | Indoor air volume | |
| Modelica.Fluid.Vessels.BaseClasses.VesselFluidPorts_b[nPorts] | ports | Auxiliary fluid inlets and outlets to indoor air volume | |
| Modelica.Blocks.Interfaces.RealInput[Medium.nC] | C_flow | Trace substance mass flow rate added to the medium | |
| Modelica.Blocks.Interfaces.RealInput | ventHum | absolute humidity of ventilation air | |
| Modelica.Blocks.Interfaces.RealInput | QLat_flow | Latent heat gains for the room | |
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | thermOutside |
Contents
| Name | Description |
|---|---|
| MediumAir |
Revisions
- January 9, 2020 by Philipp Mehrfeld:
Model added to the AixLib library. - February, 2022 by Fabian Wüllhorst and Martin Kremer:
Changed airLoad-model to mxing volume to use media model. Added possibility to analyse substance and water vapor balance (see issue #1123) - November, 2023 by Benani Zoumba:
Changed connections for moisture balance #1460)