modelChimneyShaftWithVolume

Model with chimney effect and a dynamic model of a shaft
Diagram of ChimneyShaftWithVolumeOpen the diagram
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Extends from Modelica.Icons.Example (Icon for runnable examples).

Information

This model is identical to Buildings.Airflow.Multizone.Examples.ChimneyShaftNoVolume, except that the chimney model is not steady-state, but rather dynamic as it contains an air volume. The air volume is approximated as being well-mixed. (Stratified volumes could be approximated by using multiple instances of the model sha that are connected in series.)

Components

TypeNameDefaultDescription
BuildingSystems.Fluid.MixingVolumes.MixingVolumerooAir volume of a room
BuildingSystems.Airflow.Multizone.OrificeoriChiTopOrifice at top
BuildingSystems.Fluid.Sources.MassFlowSource_TboundaryMass flow rate boundary condition
BuildingSystems.Fluid.Sources.Boundary_pTbou0Pressure boundary condition
BuildingSystems.Airflow.Multizone.OrificeoriBotOrifice
Modelica.Blocks.Sources.CombiTimeTablemRoo_flowMass flow into and out of room to fill the medium column with air of different temperature
MediumColumnstaOutModel for stack effect outside the room
BuildingSystems.Airflow.Multizone.OrificeoriChiBotOrifice at bottom
Modelica.Thermal.HeatTransfer.Sources.PrescribedHeatFlowpreHeaPrescribed heat flow
Modelica.Blocks.Continuous.LimPIDconController to maintain volume temperature
Modelica.Blocks.Sources.ConstantTSetTemperature set point
Modelica.Thermal.HeatTransfer.Sensors.TemperatureSensortemSenTemperature sensor
Modelica.Blocks.Math.GaingainGain for heat flow rate
BuildingSystems.Airflow.Multizone.MediumColumnDynamicshaShaft of chimney
MediumColumnstaInModel for stack effect inside the room

Contents

NameDescription
Medium

Revisions

  • March 26, 2021 by Michael Wetter:
    Updated comments for IBPSA, #515.
  • January 8, 2019, by Michael Wetter:
    Removed parameter assignment for sha.m_flow_nominal.
    This is for #970.
  • December 22, 2014 by Michael Wetter:
    Removed Modelica.Fluid.System to address issue #311.
  • November 10, 2011, by Michael Wetter:
    Added documentation.