modelPartialOutdoorReliefReturnSection

Interface class for outdoor/relief/return air section
Diagram of PartialOutdoorReliefReturnSectionOpen the diagram

Information

This class provides a standard interface for the outdoor/relief/return air section of an air handler. Typical components in that section include

  • shut off dampers,
  • the heat recovery unit,
  • the air economizer,
  • the relief or return fan.

Parameters

TypeNameDefaultDescription
IntegernFanRetNumber of return fans
IntegernFanRelNumber of relief fans
Buildings.Templates.AirHandlersFans.Components.Data.OutdoorReliefReturnSectiondatDesign and operating parameters
Modelica.Units.SI.MassFlowRatemAirSup_flow_nominaldat.damOut.m_flow_nominalSupply air mass flow rate
Modelica.Units.SI.MassFlowRatemAirRet_flow_nominaldat.damRet.m_flow_nominalReturn air mass flow rate
Modelica.Units.SI.MassFlowRatemOutMin_flow_nominaldat.mOutMin_flow_nominalMinimum outdoor air mass flow rate at design conditions
Modelica.Units.SI.PressureDifferencedpDamOut_nominaldat.damOut.dp_nominalOutdoor air damper pressure drop
Modelica.Units.SI.PressureDifferencedpDamOutMin_nominaldat.damOutMin.dp_nominalMinimum outdoor air damper pressure drop
Modelica.Units.SI.PressureDifferencedpDamRel_nominaldat.damRel.dp_nominalRelief air damper pressure drop
Modelica.Units.SI.PressureDifferencedpDamRet_nominaldat.damRet.dp_nominalReturn air damper pressure drop
Configuration
Buildings.Templates.AirHandlersFans.Types.OutdoorReliefReturnSectiontypOutdoor/relief/return air section type
Buildings.Controls.OBC.ASHRAE.G36.Types.OutdoorAirSectiontypSecOutOutdoor air section type
Buildings.Templates.AirHandlersFans.Types.ReliefReturnSectiontypSecRelRelief/return air section type
Buildings.Templates.Components.Types.DampertypDamOutOutdoor air damper type
Buildings.Templates.Components.Types.DampertypDamOutMinMinimum outdoor air damper type
Buildings.Templates.Components.Types.DampertypDamRelRelief damper type
Buildings.Templates.Components.Types.DampertypDamRetReturn damper type
Buildings.Templates.Components.Types.FantypFanRelRelief fan type
Buildings.Templates.Components.Types.FantypFanRetReturn fan type
Booleanhave_ecoSet to true in case of economizer function
Booleanhave_recHeafalseSet to true in case of heat recovery
Buildings.Templates.AirHandlersFans.Types.ControlFanReturntypCtlFanRetBuildings.Templates.AirHandlersFans.Types.ControlFanReturn.AirflowMeasuredReturn fan control type
Buildings.Controls.OBC.ASHRAE.G36.Types.ControlEconomizertypCtlEcoBuildings.Controls.OBC.ASHRAE.G36.Types.ControlEconomizer.FixedDryBulbEconomizer control type
Dynamics › Conservation equations
Modelica.Fluid.Types.DynamicsenergyDynamicsModelica.Fluid.Types.Dynamics.DynamicFreeInitialType of energy balance: dynamic (3 initialization options) or steady state
Assumptions
BooleanallowFlowReversaltrue= false to simplify equations, assuming, but not enforcing, no flow reversal

Connectors

TypeNameDefaultDescription
Modelica.Fluid.Interfaces.FluidPort_bport_RelRelief (exhaust) air
Modelica.Fluid.Interfaces.FluidPort_aport_OutOutdoor air intake
Modelica.Fluid.Interfaces.FluidPort_bport_SupSupply air
Modelica.Fluid.Interfaces.FluidPort_aport_RetReturn air
Modelica.Fluid.Interfaces.FluidPort_bport_bPreOptional fluid connector for differential pressure sensor
Buildings.Templates.AirHandlersFans.Interfaces.BusbusControl bus

Contents

NameDescription
MediumAir