Buildings.Examples.VAVReheat.Validation

Collection of validation models

Information

This package contains validation models for the classes in Buildings.Examples.VAVReheat.

Note that most validation models contain simple input data which may not be realistic, but for which the correct output can be obtained through an analytic solution. The examples plot various outputs, which have been verified against these solutions. These model outputs are stored as reference data and used for continuous validation whenever models in the library change.

Extends from Modelica.Icons.ExamplesPackage (Icon for packages containing runnable examples).

Package Content

Name	Description
Guideline36SteadyState	Validation of detailed model that is at steady state with constant weather data

Buildings.Examples.VAVReheat.Validation.Guideline36SteadyState

Validation of detailed model that is at steady state with constant weather data

Buildings.Examples.VAVReheat.Validation.Guideline36SteadyState

Information

This model validates that the detailed model of multiple rooms and an HVAC system starts at and remains at exactly 20°C room air temperature if there is no solar radiation, constant outdoor conditions, no internal gains and no HVAC operation.

Extends from Buildings.Examples.VAVReheat.Guideline36 (Variable air volume flow system with terminal reheat and five thermal zones).

Parameters

Type	Name	Default	Description
Volume	VRooCor	AFloCor*flo.hRoo	Room volume corridor [m3]
Volume	VRooSou	AFloSou*flo.hRoo	Room volume south [m3]
Volume	VRooNor	AFloNor*flo.hRoo	Room volume north [m3]
Volume	VRooEas	AFloEas*flo.hRoo	Room volume east [m3]
Volume	VRooWes	AFloWes*flo.hRoo	Room volume west [m3]
Area	AFloCor	flo.cor.AFlo	Floor area corridor [m2]
Area	AFloSou	flo.sou.AFlo	Floor area south [m2]
Area	AFloNor	flo.nor.AFlo	Floor area north [m2]
Area	AFloEas	flo.eas.AFlo	Floor area east [m2]
Area	AFloWes	flo.wes.AFlo	Floor area west [m2]
Area	AFlo[numZon]	{flo.cor.AFlo,flo.sou.AFlo,f...	Floor area of each zone [m2]
MassFlowRate	mCor_flow_nominal	6VRooCorconv	Design mass flow rate core [kg/s]
MassFlowRate	mSou_flow_nominal	6VRooSouconv	Design mass flow rate perimeter 1 [kg/s]
MassFlowRate	mEas_flow_nominal	9VRooEasconv	Design mass flow rate perimeter 2 [kg/s]
MassFlowRate	mNor_flow_nominal	6VRooNorconv	Design mass flow rate perimeter 3 [kg/s]
MassFlowRate	mWes_flow_nominal	7VRooWesconv	Design mass flow rate perimeter 4 [kg/s]
MassFlowRate	m_flow_nominal	0.7*(mCor_flow_nominal + mSo...	Nominal mass flow rate [kg/s]
Angle	lat	41.98*3.14159/180	Latitude [rad]
Temperature	THeaOn	293.15	Heating setpoint during on [K]
Temperature	THeaOff	285.15	Heating setpoint during off [K]
Temperature	TCooOn	297.15	Cooling setpoint during on [K]
Temperature	TCooOff	303.15	Cooling setpoint during off [K]
PressureDifference	dpBuiStaSet	12	Building static pressure [Pa]
Real	yFanMin	0.1	Minimum fan speed
Boolean	allowFlowReversal	true	= false to simplify equations, assuming, but not enforcing, no flow reversal
Boolean	use_windPressure	false	Set to true to enable wind pressure
VolumeFlowRate	VPriSysMax_flow	m_flow_nominal/1.2	Maximum expected system primary airflow rate at design stage [m3/s]
VolumeFlowRate	minZonPriFlo[numZon]	{mCor_flow_nominal,mSou_flow...	Minimum expected zone primary flow rate [m3/s]
Time	samplePeriod	120	Sample period of component, set to the same value as the trim and respond that process yPreSetReq [s]
PressureDifference	dpDisRetMax	40	Maximum return fan discharge static pressure setpoint [Pa]
Experimental (may be changed in future releases)
Boolean	sampleModel	false	Set to true to time-sample the model, which can give shorter simulation time if there is already time sampling in the system model

Connectors

Type	Name	Description
Bus	weaBus	Weather Data Bus

Modelica definition

model Guideline36SteadyState "Validation of detailed model that is at steady state with constant weather data" extends Buildings.Examples.VAVReheat.Guideline36( weaDat( pAtmSou=Buildings.BoundaryConditions.Types.DataSource.Parameter, ceiHeiSou=Buildings.BoundaryConditions.Types.DataSource.Parameter, totSkyCovSou=Buildings.BoundaryConditions.Types.DataSource.Parameter, opaSkyCovSou=Buildings.BoundaryConditions.Types.DataSource.Parameter, TDryBulSou=Buildings.BoundaryConditions.Types.DataSource.Parameter, TDewPoiSou=Buildings.BoundaryConditions.Types.DataSource.Parameter, TBlaSkySou=Buildings.BoundaryConditions.Types.DataSource.Parameter, TBlaSky=293.15, relHumSou=Buildings.BoundaryConditions.Types.DataSource.Parameter, winSpeSou=Buildings.BoundaryConditions.Types.DataSource.Parameter, winDirSou=Buildings.BoundaryConditions.Types.DataSource.Parameter, HInfHorSou=Buildings.BoundaryConditions.Types.DataSource.Parameter, HSou=Buildings.BoundaryConditions.Types.RadiationDataSource.Input_HGloHor_HDifHor), use_windPressure=false, sampleModel=false, flo( gai(K=0*[0.4; 0.4; 0.2])), occSch( occupancy=3600*24*365*{1,2}, period=2*3600*24*365)); Buildings.Controls.OBC.CDL.Continuous.Sources.Constant solRad(k=0) "Solar radiation"; equation connect(weaDat.HDifHor_in, solRad.y); connect(weaDat.HGloHor_in, solRad.y); end Guideline36SteadyState;