modelASHRAE2006Summer_Autosizing
Variable air volume flow system with terminal reheat and five thermal zones using a control sequence published by ASHRAE in 2006 with HVAC sized using autosizing
Extends from Buildings.ThermalZones.EnergyPlus_24_2_0.Examples.SmallOffice.ASHRAE2006Winter_Autosizing (Variable air volume flow system with terminal reheat and five thermal zones using a control sequence published by ASHRAE in 2006 with HVAC sized using autosizing).
Information
This is the same model as Buildings.ThermalZones.EnergyPlus_24_2_0.Examples.SmallOffice.ASHRAE2006Winter_Autosizing but configured for simulation of a few days in summer.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.Volume | VRooCor (from HVACBuilding) | flo.VRooCor | Room volume corridor |
| Modelica.Units.SI.Volume | VRooSou (from HVACBuilding) | flo.VRooSou | Room volume south |
| Modelica.Units.SI.Volume | VRooNor (from HVACBuilding) | flo.VRooNor | Room volume north |
| Modelica.Units.SI.Volume | VRooEas (from HVACBuilding) | flo.VRooEas | Room volume east |
| Modelica.Units.SI.Volume | VRooWes (from HVACBuilding) | flo.VRooWes | Room volume west |
| Modelica.Units.SI.Area | AFloCor (from HVACBuilding) | flo.AFloCor | Floor area corridor |
| Modelica.Units.SI.Area | AFloSou (from HVACBuilding) | flo.AFloSou | Floor area south |
| Modelica.Units.SI.Area | AFloNor (from HVACBuilding) | flo.AFloNor | Floor area north |
| Modelica.Units.SI.Area | AFloEas (from HVACBuilding) | flo.AFloEas | Floor area east |
| Modelica.Units.SI.Area | AFloWes (from HVACBuilding) | flo.AFloWes | Floor area west |
| Real | conv (from HVACBuilding) | 1.2/3600 | Conversion factor for nominal mass flow rate |
| Modelica.Units.SI.MassFlowRate | mCor_flow_nominal (from HVACBuilding) | Design mass flow rate core | |
| Modelica.Units.SI.MassFlowRate | mSou_flow_nominal (from HVACBuilding) | Design mass flow rate south | |
| Modelica.Units.SI.MassFlowRate | mEas_flow_nominal (from HVACBuilding) | Design mass flow rate east | |
| Modelica.Units.SI.MassFlowRate | mNor_flow_nominal (from HVACBuilding) | Design mass flow rate north | |
| Modelica.Units.SI.MassFlowRate | mWes_flow_nominal (from HVACBuilding) | Design mass flow rate west | |
| Modelica.Units.SI.MassFlowRate[5] | mCooVAV_flow_nominal (from HVACBuilding) | {mSou_flow_nominal, mEas_flow_nominal, mNor_flow_nominal, mWes_flow_nominal, mCor_flow_nominal} | Design mass flow rate of each zone |
| Modelica.Units.SI.Temperature | THeaWatInl_nominal (from HVACBuilding) | 45 + 273.15 | Reheat coil nominal inlet water temperature |
| Modelica.Units.SI.Temperature | TZonSetAve (from ASHRAE2006Winter_Autosizing) | (mCor_flow_nominal*flo.cor.sizCoo.TSet + mSou_flow_nominal*flo.sou.sizCoo.TSet + mEas_flow_nominal*flo.eas.sizCoo.TSet + mNor_flow_nominal*flo.nor.sizCoo.TSet + mWes_flow_nominal*flo.wes.sizCoo.TSet)/(mCor_flow_nominal + mSou_flow_nominal + mEas_flow_nominal + mNor_flow_nominal + mWes_flow_nominal) | Average cooling zone temperature set point weighted by zone airflow |
| Modelica.Units.SI.MassFraction | XZonSetAve (from ASHRAE2006Winter_Autosizing) | (mCor_flow_nominal*flo.cor.sizCoo.XSet + mSou_flow_nominal*flo.sou.sizCoo.XSet + mEas_flow_nominal*flo.eas.sizCoo.XSet + mNor_flow_nominal*flo.nor.sizCoo.XSet + mWes_flow_nominal*flo.wes.sizCoo.XSet)/(mCor_flow_nominal + mSou_flow_nominal + mEas_flow_nominal + mNor_flow_nominal + mWes_flow_nominal) | Average cooling zone humidity ratio cooling set point weighted by zone airflow |
| Modelica.Units.SI.Temperature | TCooAirSup_nominal (from ASHRAE2006Winter_Autosizing) | 12 + 273.15 | Nominal discharge air temperature for AHU during cooling |
| Modelica.Units.SI.MassFraction | XCooAirSup_nominal (from ASHRAE2006Winter_Autosizing) | 0.0085/(1 + 0.0085) | Nominal discharge air humidity ratio for AHU during cooling |
| Modelica.Units.SI.HeatFlowRate | QCooSenAHU_flow_nominal (from ASHRAE2006Winter_Autosizing) | hvac.mCooAir_flow_nominal*cpAir*(TCooAirSup_nominal - hvac.TCooAirMix_nominal) | Nominal sensible cooling load on AHU cooling coil |
| Modelica.Units.SI.HeatFlowRate | QCooLatAHU_flow_nominal (from ASHRAE2006Winter_Autosizing) | hvac.mCooAir_flow_nominal*h_fg*(XCooAirSup_nominal - hvac.wCooAirMix_nominal) | Nominal latent cooling load on AHU cooling coil |
| Modelica.Units.SI.Temperature | THeaAirDis_nominal (from ASHRAE2006Winter_Autosizing) | 40 + 273.15 | Nominal discharge air temperature for VAV boxes during heating |
| Modelica.Units.SI.SpecificHeatCapacity | cpAir (from ASHRAE2006Winter_Autosizing) | MediumA.specificHeatCapacityCp(state_default) | Specific heat capacity of air at default medium state |
| Modelica.Units.SI.SpecificEnergy | h_fg (from ASHRAE2006Winter_Autosizing) | MediumA.enthalpyOfCondensingGas(TCooAirSup_nominal) | Latent heat of water vapor |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.Examples.VAVReheat.BaseClasses.PartialHVAC | hvac (from HVACBuilding) | ||
| Buildings.Examples.VAVReheat.BaseClasses.PartialFloor | flo (from HVACBuilding) | ||
| Buildings.BoundaryConditions.WeatherData.ReaderTMY3 | weaDat (from HVACBuilding) | Weather data reader | |
| Fluid.Sources.Boundary_pT | sinHea (from HVACBuilding) | Sink for heating coil | |
| Fluid.Sources.Boundary_pT | souHea (from HVACBuilding) | Source for heating coil | |
| Fluid.Sources.Boundary_pT | sinCoo (from HVACBuilding) | Sink for cooling coil | |
| Fluid.Sources.Boundary_pT | souCoo (from HVACBuilding) | Source for cooling coil loop | |
| Fluid.Sources.Boundary_pT | souHeaTer (from HVACBuilding) | Source for heating of terminal boxes | |
| Fluid.Sources.Boundary_pT | sinHeaTer (from HVACBuilding) | Source for heating of terminal boxes |
Revisions
-
July 23, 2026, by David Blum:
First implementation.