Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice

Package with VAV models for a small office building

Information

This package contains variable air volume flow models for a office building.

Note

The models Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.ASHRAE2006Winter and Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.Guideline36Winter appear to be quite similar to Buildings.Examples.VAVReheat.ASHRAE2006 and Buildings.Examples.VAVReheat.Guideline36, respectively, because they all have the same HVAC system, control sequences, and all have five thermal zones. However, the models in Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice are from the DOE Commercial Reference Building, Small Office, new construction, ASHRAE 90.1-2004, Version 1.3_5.0, whereas the models in Buildings.Examples.VAVReheat are from the DOE Commercial Building Benchmark, Medium Office, new construction, ASHRAE 90.1-2004, version 1.2_4.0. Therefore, the dimensions of the thermal zones in Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice are considerably smaller than in Buildings.Examples.VAVReheat. As the sizing is scaled with the volumes of the thermal zones, the model structure is the same, but the design capacities are different, as is the energy consumption.

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

Package Content

Name	Description
ASHRAE2006Spring	Variable air volume flow system with terminal reheat and five thermal zones using a control sequence published by ASHRAE in 2006
ASHRAE2006Summer	Variable air volume flow system with terminal reheat and five thermal zones using a control sequence published by ASHRAE in 2006
ASHRAE2006Winter	Variable air volume flow system with terminal reheat and five thermal zones using a control sequence published by ASHRAE in 2006
Guideline36Spring	Variable air volume flow system with terminal reheat and five thermal zones controlled using an ASHRAE G36 controller
Guideline36Summer	Variable air volume flow system with terminal reheat and five thermal zones controlled using an ASHRAE G36 controller
Guideline36Winter	Variable air volume flow system with terminal reheat and five thermal zones controlled using an ASHRAE G36 controller
IdealHeatingCoolingSpring	Building with constant fresh air and ideal heating/cooling that exactly meets set point
IdealHeatingCoolingSummer	Building with constant fresh air and ideal heating/cooling that exactly meets set point
IdealHeatingCoolingWinter	Building with constant fresh air and ideal heating/cooling that exactly meets set point
Unconditioned	Open loop model of one floor
BaseClasses	Package with base classes

Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.ASHRAE2006Spring

Variable air volume flow system with terminal reheat and five thermal zones using a control sequence published by ASHRAE in 2006

Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.ASHRAE2006Spring

Information

This is the same model as Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.ASHRAE2006Winter but configured for simulation of a few days in spring.

Extends from Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.ASHRAE2006Winter (Variable air volume flow system with terminal reheat and five thermal zones using a control sequence published by ASHRAE in 2006).

Parameters

Type	Name	Default	Description
Volume	VRooCor	flo.VRooCor	Room volume corridor [m3]
Volume	VRooSou	flo.VRooSou	Room volume south [m3]
Volume	VRooNor	flo.VRooNor	Room volume north [m3]
Volume	VRooEas	flo.VRooEas	Room volume east [m3]
Volume	VRooWes	flo.VRooWes	Room volume west [m3]
Area	AFloCor	flo.AFloCor	Floor area corridor [m2]
Area	AFloSou	flo.AFloSou	Floor area south [m2]
Area	AFloNor	flo.AFloNor	Floor area north [m2]
Area	AFloEas	flo.AFloEas	Floor area east [m2]
Area	AFloWes	flo.AFloWes	Floor area west [m2]
Area	AFlo[numZon]	{flo.AFloCor,flo.AFloSou,flo...	Floor area of each zone [m2]
Real	ACHCor	4	Design air change per hour core [1/h]
Real	ACHSou	4	Design air change per hour south [1/h]
Real	ACHEas	6	Design air change per hour east [1/h]
Real	ACHNor	4	Design air change per hour north [1/h]
Real	ACHWes	6	Design air change per hour west [1/h]
MassFlowRate	mCor_flow_nominal	ACHCorVRooCorconv	Design mass flow rate core [kg/s]
MassFlowRate	mSou_flow_nominal	ACHSouVRooSouconv	Design mass flow rate south [kg/s]
MassFlowRate	mEas_flow_nominal	ACHEasVRooEasconv	Design mass flow rate east [kg/s]
MassFlowRate	mNor_flow_nominal	ACHNorVRooNorconv	Design mass flow rate north [kg/s]
MassFlowRate	mWes_flow_nominal	ACHWesVRooWesconv	Design mass flow rate west [kg/s]
MassFlowRate	m_flow_nominal	0.7*(mCor_flow_nominal + mSo...	Nominal mass flow rate [kg/s]
Real	ratVFloHea	0.3	VAV box maximum air flow rate ratio in heating mode [1]
Angle	lat	41.98*3.14159/180	Latitude [rad]
Real	ratOAFlo_A	0.3e-3	Outdoor airflow rate required per unit area [m3/(s.m2)]
Real	ratOAFlo_P	2.5e-3	Outdoor airflow rate required per person
Real	ratP_A	5e-2	Occupant density
Real	effZ	0.8	Zone air distribution effectiveness (limiting value) [1]
Real	divP	0.7	Occupant diversity ratio [1]
VolumeFlowRate	VCorOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	VSouOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	VEasOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	VNorOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	VWesOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	Vou_flow_nominal	(divPratOAFlo_PratP_A + ra...	System uncorrected outdoor air flow rate [m3/s]
Real	effVen	if divP < 0.6 then 0.88*divP...	System ventilation efficiency [1]
VolumeFlowRate	Vot_flow_nominal	Vou_flow_nominal/effVen	System design outdoor air flow rate [m3/s]
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
Temperature	THotWatInl_nominal	55 + 273.15	Reheat coil nominal inlet water temperature [K]
Boolean	allowFlowReversal	true	= false to simplify equations, assuming, but not enforcing, no flow reversal
Boolean	use_windPressure	true	Set to true to enable wind pressure
Floor	flo	redeclare replaceable Buildi...	Model of a floor of the building that is served by this VAV system
Real	ratVMinCor_flow	max(1.5*VCorOA_flow_nominal,...	Minimum discharge air flow rate ratio [1]
Real	ratVMinSou_flow	max(1.5*VSouOA_flow_nominal,...	Minimum discharge air flow rate ratio [1]
Real	ratVMinEas_flow	max(1.5*VEasOA_flow_nominal,...	Minimum discharge air flow rate ratio [1]
Real	ratVMinNor_flow	max(1.5*VNorOA_flow_nominal,...	Minimum discharge air flow rate ratio [1]
Real	ratVMinWes_flow	max(1.5*VWesOA_flow_nominal,...	Minimum discharge air flow rate ratio [1]
Experimental (may be changed in future releases)
Boolean	sampleModel	true	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
ControlBus	controlBus

Modelica definition

model ASHRAE2006Spring "Variable air volume flow system with terminal reheat and five thermal zones using a control sequence published by ASHRAE in 2006" extends Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.ASHRAE2006Winter; end ASHRAE2006Spring;

Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.ASHRAE2006Summer

Information

This is the same model as Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.ASHRAE2006Winter but configured for simulation of a few days in spring.

Parameters

Type	Name	Default	Description
Volume	VRooCor	flo.VRooCor	Room volume corridor [m3]
Volume	VRooSou	flo.VRooSou	Room volume south [m3]
Volume	VRooNor	flo.VRooNor	Room volume north [m3]
Volume	VRooEas	flo.VRooEas	Room volume east [m3]
Volume	VRooWes	flo.VRooWes	Room volume west [m3]
Area	AFloCor	flo.AFloCor	Floor area corridor [m2]
Area	AFloSou	flo.AFloSou	Floor area south [m2]
Area	AFloNor	flo.AFloNor	Floor area north [m2]
Area	AFloEas	flo.AFloEas	Floor area east [m2]
Area	AFloWes	flo.AFloWes	Floor area west [m2]
Area	AFlo[numZon]	{flo.AFloCor,flo.AFloSou,flo...	Floor area of each zone [m2]
Real	ACHCor	4	Design air change per hour core [1/h]
Real	ACHSou	4	Design air change per hour south [1/h]
Real	ACHEas	6	Design air change per hour east [1/h]
Real	ACHNor	4	Design air change per hour north [1/h]
Real	ACHWes	6	Design air change per hour west [1/h]
MassFlowRate	mCor_flow_nominal	ACHCorVRooCorconv	Design mass flow rate core [kg/s]
MassFlowRate	mSou_flow_nominal	ACHSouVRooSouconv	Design mass flow rate south [kg/s]
MassFlowRate	mEas_flow_nominal	ACHEasVRooEasconv	Design mass flow rate east [kg/s]
MassFlowRate	mNor_flow_nominal	ACHNorVRooNorconv	Design mass flow rate north [kg/s]
MassFlowRate	mWes_flow_nominal	ACHWesVRooWesconv	Design mass flow rate west [kg/s]
MassFlowRate	m_flow_nominal	0.7*(mCor_flow_nominal + mSo...	Nominal mass flow rate [kg/s]
Real	ratVFloHea	0.3	VAV box maximum air flow rate ratio in heating mode [1]
Angle	lat	41.98*3.14159/180	Latitude [rad]
Real	ratOAFlo_A	0.3e-3	Outdoor airflow rate required per unit area [m3/(s.m2)]
Real	ratOAFlo_P	2.5e-3	Outdoor airflow rate required per person
Real	ratP_A	5e-2	Occupant density
Real	effZ	0.8	Zone air distribution effectiveness (limiting value) [1]
Real	divP	0.7	Occupant diversity ratio [1]
VolumeFlowRate	VCorOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	VSouOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	VEasOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	VNorOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	VWesOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	Vou_flow_nominal	(divPratOAFlo_PratP_A + ra...	System uncorrected outdoor air flow rate [m3/s]
Real	effVen	if divP < 0.6 then 0.88*divP...	System ventilation efficiency [1]
VolumeFlowRate	Vot_flow_nominal	Vou_flow_nominal/effVen	System design outdoor air flow rate [m3/s]
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
Temperature	THotWatInl_nominal	55 + 273.15	Reheat coil nominal inlet water temperature [K]
Boolean	allowFlowReversal	true	= false to simplify equations, assuming, but not enforcing, no flow reversal
Boolean	use_windPressure	true	Set to true to enable wind pressure
Floor	flo	redeclare replaceable Buildi...	Model of a floor of the building that is served by this VAV system
Real	ratVMinCor_flow	max(1.5*VCorOA_flow_nominal,...	Minimum discharge air flow rate ratio [1]
Real	ratVMinSou_flow	max(1.5*VSouOA_flow_nominal,...	Minimum discharge air flow rate ratio [1]
Real	ratVMinEas_flow	max(1.5*VEasOA_flow_nominal,...	Minimum discharge air flow rate ratio [1]
Real	ratVMinNor_flow	max(1.5*VNorOA_flow_nominal,...	Minimum discharge air flow rate ratio [1]
Real	ratVMinWes_flow	max(1.5*VWesOA_flow_nominal,...	Minimum discharge air flow rate ratio [1]
Experimental (may be changed in future releases)
Boolean	sampleModel	true	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
ControlBus	controlBus

Modelica definition

model ASHRAE2006Summer "Variable air volume flow system with terminal reheat and five thermal zones using a control sequence published by ASHRAE in 2006" extends Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.ASHRAE2006Winter; end ASHRAE2006Summer;

Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.ASHRAE2006Winter

Information

This model consist of an HVAC system, a building envelope model and a model for air flow through building leakage and through open doors.

The HVAC system is a variable air volume (VAV) flow system with economizer and a heating and cooling coil in the air handler unit. There is also a reheat coil and an air damper in each of the five zone inlet branches. The figure below shows the schematic diagram of the HVAC system

See the model Buildings.Examples.VAVReheat.BaseClasses.PartialOpenLoop for a description of the HVAC system and the building envelope.

The control is an implementation of the control sequence VAV 2A2-21232 of the Sequences of Operation for Common HVAC Systems (ASHRAE, 2006). In this control sequence, the supply fan speed is regulated based on the duct static pressure. The return fan controller tracks the supply fan air flow rate. The duct static pressure is adjusted so that at least one VAV damper is 90% open. The economizer dampers are modulated to track the setpoint for the mixed air dry bulb temperature. Priority is given to maintain a minimum outside air volume flow rate. In each zone, the VAV damper is adjusted to meet the room temperature setpoint for cooling, or fully opened during heating. The room temperature setpoint for heating is tracked by varying the water flow rate through the reheat coil. There is also a finite state machine that transitions the mode of operation of the HVAC system between the modes occupied, unoccupied off, unoccupied night set back, unoccupied warm-up and unoccupied pre-cool. In the VAV model, all air flows are computed based on the duct static pressure distribution and the performance curves of the fans. Local loop control is implemented using proportional and proportional-integral controllers, while the supervisory control is implemented using a finite state machine.

A similar model but with a different control sequence can be found in Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.Guideline36Winter.

References

ASHRAE. Sequences of Operation for Common HVAC Systems. ASHRAE, Atlanta, GA, 2006.

Extends from Buildings.Examples.VAVReheat.ASHRAE2006 (Variable air volume flow system with terminal reheat and five thermal zones).

Parameters

Type	Name	Default	Description
Volume	VRooCor	flo.VRooCor	Room volume corridor [m3]
Volume	VRooSou	flo.VRooSou	Room volume south [m3]
Volume	VRooNor	flo.VRooNor	Room volume north [m3]
Volume	VRooEas	flo.VRooEas	Room volume east [m3]
Volume	VRooWes	flo.VRooWes	Room volume west [m3]
Area	AFloCor	flo.AFloCor	Floor area corridor [m2]
Area	AFloSou	flo.AFloSou	Floor area south [m2]
Area	AFloNor	flo.AFloNor	Floor area north [m2]
Area	AFloEas	flo.AFloEas	Floor area east [m2]
Area	AFloWes	flo.AFloWes	Floor area west [m2]
Area	AFlo[numZon]	{flo.AFloCor,flo.AFloSou,flo...	Floor area of each zone [m2]
Real	ACHCor	4	Design air change per hour core [1/h]
Real	ACHSou	4	Design air change per hour south [1/h]
Real	ACHEas	6	Design air change per hour east [1/h]
Real	ACHNor	4	Design air change per hour north [1/h]
Real	ACHWes	6	Design air change per hour west [1/h]
MassFlowRate	mCor_flow_nominal	ACHCorVRooCorconv	Design mass flow rate core [kg/s]
MassFlowRate	mSou_flow_nominal	ACHSouVRooSouconv	Design mass flow rate south [kg/s]
MassFlowRate	mEas_flow_nominal	ACHEasVRooEasconv	Design mass flow rate east [kg/s]
MassFlowRate	mNor_flow_nominal	ACHNorVRooNorconv	Design mass flow rate north [kg/s]
MassFlowRate	mWes_flow_nominal	ACHWesVRooWesconv	Design mass flow rate west [kg/s]
MassFlowRate	m_flow_nominal	0.7*(mCor_flow_nominal + mSo...	Nominal mass flow rate [kg/s]
Real	ratVFloHea	0.3	VAV box maximum air flow rate ratio in heating mode [1]
Angle	lat	41.98*3.14159/180	Latitude [rad]
Real	ratOAFlo_A	0.3e-3	Outdoor airflow rate required per unit area [m3/(s.m2)]
Real	ratOAFlo_P	2.5e-3	Outdoor airflow rate required per person
Real	ratP_A	5e-2	Occupant density
Real	effZ	0.8	Zone air distribution effectiveness (limiting value) [1]
Real	divP	0.7	Occupant diversity ratio [1]
VolumeFlowRate	VCorOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	VSouOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	VEasOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	VNorOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	VWesOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	Vou_flow_nominal	(divPratOAFlo_PratP_A + ra...	System uncorrected outdoor air flow rate [m3/s]
Real	effVen	if divP < 0.6 then 0.88*divP...	System ventilation efficiency [1]
VolumeFlowRate	Vot_flow_nominal	Vou_flow_nominal/effVen	System design outdoor air flow rate [m3/s]
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
Temperature	THotWatInl_nominal	55 + 273.15	Reheat coil nominal inlet water temperature [K]
Boolean	allowFlowReversal	true	= false to simplify equations, assuming, but not enforcing, no flow reversal
Boolean	use_windPressure	true	Set to true to enable wind pressure
Real	ratVMinCor_flow	max(1.5*VCorOA_flow_nominal,...	Minimum discharge air flow rate ratio [1]
Real	ratVMinSou_flow	max(1.5*VSouOA_flow_nominal,...	Minimum discharge air flow rate ratio [1]
Real	ratVMinEas_flow	max(1.5*VEasOA_flow_nominal,...	Minimum discharge air flow rate ratio [1]
Real	ratVMinNor_flow	max(1.5*VNorOA_flow_nominal,...	Minimum discharge air flow rate ratio [1]
Real	ratVMinWes_flow	max(1.5*VWesOA_flow_nominal,...	Minimum discharge air flow rate ratio [1]
Experimental (may be changed in future releases)
Boolean	sampleModel	true	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
ControlBus	controlBus

Modelica definition

model ASHRAE2006Winter "Variable air volume flow system with terminal reheat and five thermal zones using a control sequence published by ASHRAE in 2006" extends Buildings.Examples.VAVReheat.ASHRAE2006( redeclare replaceable Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.BaseClasses.Floor flo constrainedby Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.BaseClasses.Floor, ACHCor=4, ACHSou=4, ACHEas=6, ACHNor=4, ACHWes=6); end ASHRAE2006Winter;

Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.Guideline36Spring

Variable air volume flow system with terminal reheat and five thermal zones controlled using an ASHRAE G36 controller

Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.Guideline36Spring

Information

This is the same model as Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.Guideline36Winter but configured for simulation of a few days in spring.

Extends from Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.Guideline36Winter (Variable air volume flow system with terminal reheat and five thermal zones controlled using an ASHRAE G36 controller).

Parameters

Type	Name	Default	Description
Volume	VRooCor	flo.VRooCor	Room volume corridor [m3]
Volume	VRooSou	flo.VRooSou	Room volume south [m3]
Volume	VRooNor	flo.VRooNor	Room volume north [m3]
Volume	VRooEas	flo.VRooEas	Room volume east [m3]
Volume	VRooWes	flo.VRooWes	Room volume west [m3]
Area	AFloCor	flo.AFloCor	Floor area corridor [m2]
Area	AFloSou	flo.AFloSou	Floor area south [m2]
Area	AFloNor	flo.AFloNor	Floor area north [m2]
Area	AFloEas	flo.AFloEas	Floor area east [m2]
Area	AFloWes	flo.AFloWes	Floor area west [m2]
Area	AFlo[numZon]	{flo.AFloCor,flo.AFloSou,flo...	Floor area of each zone [m2]
Real	ACHCor	4	Design air change per hour core [1/h]
Real	ACHSou	4	Design air change per hour south [1/h]
Real	ACHEas	6	Design air change per hour east [1/h]
Real	ACHNor	4	Design air change per hour north [1/h]
Real	ACHWes	6	Design air change per hour west [1/h]
MassFlowRate	mCor_flow_nominal	ACHCorVRooCorconv	Design mass flow rate core [kg/s]
MassFlowRate	mSou_flow_nominal	ACHSouVRooSouconv	Design mass flow rate south [kg/s]
MassFlowRate	mEas_flow_nominal	ACHEasVRooEasconv	Design mass flow rate east [kg/s]
MassFlowRate	mNor_flow_nominal	ACHNorVRooNorconv	Design mass flow rate north [kg/s]
MassFlowRate	mWes_flow_nominal	ACHWesVRooWesconv	Design mass flow rate west [kg/s]
MassFlowRate	m_flow_nominal	0.7*(mCor_flow_nominal + mSo...	Nominal mass flow rate [kg/s]
Real	ratVFloHea	0.3	VAV box maximum air flow rate ratio in heating mode [1]
Angle	lat	41.98*3.14159/180	Latitude [rad]
Real	ratOAFlo_A	0.3e-3	Outdoor airflow rate required per unit area [m3/(s.m2)]
Real	ratOAFlo_P	2.5e-3	Outdoor airflow rate required per person
Real	ratP_A	5e-2	Occupant density
Real	effZ	0.8	Zone air distribution effectiveness (limiting value) [1]
Real	divP	0.7	Occupant diversity ratio [1]
VolumeFlowRate	VCorOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	VSouOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	VEasOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	VNorOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	VWesOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	Vou_flow_nominal	(divPratOAFlo_PratP_A + ra...	System uncorrected outdoor air flow rate [m3/s]
Real	effVen	if divP < 0.6 then 0.88*divP...	System ventilation efficiency [1]
VolumeFlowRate	Vot_flow_nominal	Vou_flow_nominal/effVen	System design outdoor air flow rate [m3/s]
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
Temperature	THotWatInl_nominal	55 + 273.15	Reheat coil nominal inlet water temperature [K]
Boolean	allowFlowReversal	true	= false to simplify equations, assuming, but not enforcing, no flow reversal
Boolean	use_windPressure	true	Set to true to enable wind pressure
Floor	flo	redeclare replaceable Buildi...	Model of a floor of the building that is served by this VAV system
VolumeFlowRate	VPriSysMax_flow	m_flow_nominal/1.2	Maximum expected system primary airflow rate at design stage [m3/s]
VolumeFlowRate	minZonPriFlo[numZon]	{conVAVCor.VDisSetMin_flow,c...	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	true	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 Guideline36Spring "Variable air volume flow system with terminal reheat and five thermal zones controlled using an ASHRAE G36 controller" extends Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.Guideline36Winter; end Guideline36Spring;

Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.Guideline36Summer

Variable air volume flow system with terminal reheat and five thermal zones controlled using an ASHRAE G36 controller

Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.Guideline36Summer

Information

This is the same model as Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.Guideline36Winter but configured for simulation of a few days in summer.

Parameters

Type	Name	Default	Description
Volume	VRooCor	flo.VRooCor	Room volume corridor [m3]
Volume	VRooSou	flo.VRooSou	Room volume south [m3]
Volume	VRooNor	flo.VRooNor	Room volume north [m3]
Volume	VRooEas	flo.VRooEas	Room volume east [m3]
Volume	VRooWes	flo.VRooWes	Room volume west [m3]
Area	AFloCor	flo.AFloCor	Floor area corridor [m2]
Area	AFloSou	flo.AFloSou	Floor area south [m2]
Area	AFloNor	flo.AFloNor	Floor area north [m2]
Area	AFloEas	flo.AFloEas	Floor area east [m2]
Area	AFloWes	flo.AFloWes	Floor area west [m2]
Area	AFlo[numZon]	{flo.AFloCor,flo.AFloSou,flo...	Floor area of each zone [m2]
Real	ACHCor	4	Design air change per hour core [1/h]
Real	ACHSou	4	Design air change per hour south [1/h]
Real	ACHEas	6	Design air change per hour east [1/h]
Real	ACHNor	4	Design air change per hour north [1/h]
Real	ACHWes	6	Design air change per hour west [1/h]
MassFlowRate	mCor_flow_nominal	ACHCorVRooCorconv	Design mass flow rate core [kg/s]
MassFlowRate	mSou_flow_nominal	ACHSouVRooSouconv	Design mass flow rate south [kg/s]
MassFlowRate	mEas_flow_nominal	ACHEasVRooEasconv	Design mass flow rate east [kg/s]
MassFlowRate	mNor_flow_nominal	ACHNorVRooNorconv	Design mass flow rate north [kg/s]
MassFlowRate	mWes_flow_nominal	ACHWesVRooWesconv	Design mass flow rate west [kg/s]
MassFlowRate	m_flow_nominal	0.7*(mCor_flow_nominal + mSo...	Nominal mass flow rate [kg/s]
Real	ratVFloHea	0.3	VAV box maximum air flow rate ratio in heating mode [1]
Angle	lat	41.98*3.14159/180	Latitude [rad]
Real	ratOAFlo_A	0.3e-3	Outdoor airflow rate required per unit area [m3/(s.m2)]
Real	ratOAFlo_P	2.5e-3	Outdoor airflow rate required per person
Real	ratP_A	5e-2	Occupant density
Real	effZ	0.8	Zone air distribution effectiveness (limiting value) [1]
Real	divP	0.7	Occupant diversity ratio [1]
VolumeFlowRate	VCorOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	VSouOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	VEasOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	VNorOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	VWesOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	Vou_flow_nominal	(divPratOAFlo_PratP_A + ra...	System uncorrected outdoor air flow rate [m3/s]
Real	effVen	if divP < 0.6 then 0.88*divP...	System ventilation efficiency [1]
VolumeFlowRate	Vot_flow_nominal	Vou_flow_nominal/effVen	System design outdoor air flow rate [m3/s]
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
Temperature	THotWatInl_nominal	55 + 273.15	Reheat coil nominal inlet water temperature [K]
Boolean	allowFlowReversal	true	= false to simplify equations, assuming, but not enforcing, no flow reversal
Boolean	use_windPressure	true	Set to true to enable wind pressure
Floor	flo	redeclare replaceable Buildi...	Model of a floor of the building that is served by this VAV system
VolumeFlowRate	VPriSysMax_flow	m_flow_nominal/1.2	Maximum expected system primary airflow rate at design stage [m3/s]
VolumeFlowRate	minZonPriFlo[numZon]	{conVAVCor.VDisSetMin_flow,c...	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	true	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 Guideline36Summer "Variable air volume flow system with terminal reheat and five thermal zones controlled using an ASHRAE G36 controller" extends Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.Guideline36Winter; end Guideline36Summer;

Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.Guideline36Winter

Variable air volume flow system with terminal reheat and five thermal zones controlled using an ASHRAE G36 controller

Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.Guideline36Winter

Information

This model consist of an HVAC system, a building envelope model and a model for air flow through building leakage and through open doors.

See the model Buildings.Examples.VAVReheat.BaseClasses.PartialOpenLoop for a description of the HVAC system and the building envelope.

The control is based on ASHRAE Guideline 36, and implemented using the sequences from the library Buildings.Controls.OBC.ASHRAE.G36_PR1 for multi-zone VAV systems with economizer. The schematic diagram of the HVAC and control sequence is shown in the figure below.

A similar model but with a different control sequence can be found in Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.ASHRAE2006Winter.. Note that this model, because of the frequent time sampling, has longer computing time than Buildings.Examples.VAVReheat.ASHRAE2006. The reason is that the time integrator cannot make large steps because it needs to set a time step each time the control samples its input.

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	flo.VRooCor	Room volume corridor [m3]
Volume	VRooSou	flo.VRooSou	Room volume south [m3]
Volume	VRooNor	flo.VRooNor	Room volume north [m3]
Volume	VRooEas	flo.VRooEas	Room volume east [m3]
Volume	VRooWes	flo.VRooWes	Room volume west [m3]
Area	AFloCor	flo.AFloCor	Floor area corridor [m2]
Area	AFloSou	flo.AFloSou	Floor area south [m2]
Area	AFloNor	flo.AFloNor	Floor area north [m2]
Area	AFloEas	flo.AFloEas	Floor area east [m2]
Area	AFloWes	flo.AFloWes	Floor area west [m2]
Area	AFlo[numZon]	{flo.AFloCor,flo.AFloSou,flo...	Floor area of each zone [m2]
Real	ACHCor	4	Design air change per hour core [1/h]
Real	ACHSou	4	Design air change per hour south [1/h]
Real	ACHEas	6	Design air change per hour east [1/h]
Real	ACHNor	4	Design air change per hour north [1/h]
Real	ACHWes	6	Design air change per hour west [1/h]
MassFlowRate	mCor_flow_nominal	ACHCorVRooCorconv	Design mass flow rate core [kg/s]
MassFlowRate	mSou_flow_nominal	ACHSouVRooSouconv	Design mass flow rate south [kg/s]
MassFlowRate	mEas_flow_nominal	ACHEasVRooEasconv	Design mass flow rate east [kg/s]
MassFlowRate	mNor_flow_nominal	ACHNorVRooNorconv	Design mass flow rate north [kg/s]
MassFlowRate	mWes_flow_nominal	ACHWesVRooWesconv	Design mass flow rate west [kg/s]
MassFlowRate	m_flow_nominal	0.7*(mCor_flow_nominal + mSo...	Nominal mass flow rate [kg/s]
Real	ratVFloHea	0.3	VAV box maximum air flow rate ratio in heating mode [1]
Angle	lat	41.98*3.14159/180	Latitude [rad]
Real	ratOAFlo_A	0.3e-3	Outdoor airflow rate required per unit area [m3/(s.m2)]
Real	ratOAFlo_P	2.5e-3	Outdoor airflow rate required per person
Real	ratP_A	5e-2	Occupant density
Real	effZ	0.8	Zone air distribution effectiveness (limiting value) [1]
Real	divP	0.7	Occupant diversity ratio [1]
VolumeFlowRate	VCorOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	VSouOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	VEasOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	VNorOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	VWesOA_flow_nominal	(ratOAFlo_P*ratP_A + ratOAFl...	Zone outdoor air flow rate [m3/s]
VolumeFlowRate	Vou_flow_nominal	(divPratOAFlo_PratP_A + ra...	System uncorrected outdoor air flow rate [m3/s]
Real	effVen	if divP < 0.6 then 0.88*divP...	System ventilation efficiency [1]
VolumeFlowRate	Vot_flow_nominal	Vou_flow_nominal/effVen	System design outdoor air flow rate [m3/s]
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
Temperature	THotWatInl_nominal	55 + 273.15	Reheat coil nominal inlet water temperature [K]
Boolean	allowFlowReversal	true	= false to simplify equations, assuming, but not enforcing, no flow reversal
Boolean	use_windPressure	true	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]	{conVAVCor.VDisSetMin_flow,c...	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	true	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 Guideline36Winter "Variable air volume flow system with terminal reheat and five thermal zones controlled using an ASHRAE G36 controller" extends Buildings.Examples.VAVReheat.Guideline36( redeclare replaceable Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.BaseClasses.Floor flo constrainedby Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.BaseClasses.Floor, ACHCor=4, ACHSou=4, ACHEas=6, ACHNor=4, ACHWes=6); end Guideline36Winter;

Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.IdealHeatingCoolingSpring

Building with constant fresh air and ideal heating/cooling that exactly meets set point

Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.IdealHeatingCoolingSpring

Information

This is the same model as Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.IdealHeatingCoolingWinter but configured for simulation of a few days in summer.

Extends from Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.IdealHeatingCoolingWinter (Building with constant fresh air and ideal heating/cooling that exactly meets set point).

Parameters

Type	Name	Default	Description
replaceable package Medium		Air	Medium for air
String	weaName	Modelica.Utilities.Files.loa...	Name of the weather file

Connectors

Type	Name	Description
Bus	weaBus	Weather data bus

Modelica definition

model IdealHeatingCoolingSpring "Building with constant fresh air and ideal heating/cooling that exactly meets set point" extends Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.IdealHeatingCoolingWinter; end IdealHeatingCoolingSpring;

Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.IdealHeatingCoolingSummer

Building with constant fresh air and ideal heating/cooling that exactly meets set point

Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.IdealHeatingCoolingSummer

Information

This is the same model as Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.IdealHeatingCoolingWinter but configured for simulation of a few days in summer.

Extends from Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.IdealHeatingCoolingWinter (Building with constant fresh air and ideal heating/cooling that exactly meets set point).

Parameters

Type	Name	Default	Description
replaceable package Medium		Air	Medium for air
String	weaName	Modelica.Utilities.Files.loa...	Name of the weather file

Connectors

Type	Name	Description
Bus	weaBus	Weather data bus

Modelica definition

model IdealHeatingCoolingSummer "Building with constant fresh air and ideal heating/cooling that exactly meets set point" extends Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.IdealHeatingCoolingWinter; end IdealHeatingCoolingSummer;

Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.IdealHeatingCoolingWinter

Building with constant fresh air and ideal heating/cooling that exactly meets set point

Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.IdealHeatingCoolingWinter

Information

Test case of the small office DOE reference building without an HVAC system but an ideal heating/cooling device that exactly meets the load.

Extends from Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.Unconditioned (Open loop model of one floor).

Parameters

Type	Name	Default	Description
replaceable package Medium		Air	Medium for air
String	weaName	Modelica.Utilities.Files.loa...	Name of the weather file

Connectors

Type	Name	Description
Bus	weaBus	Weather data bus

Modelica definition

model IdealHeatingCoolingWinter "Building with constant fresh air and ideal heating/cooling that exactly meets set point" extends Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.Unconditioned; Controls.OBC.CDL.Continuous.Sources.Constant THeaSet[5]( each k( final unit="K", displayUnit="degC")=293.15) "Set point temperature for heating"; Controls.OBC.CDL.Continuous.Sources.Constant THeaCoo[5]( each k( final unit="K", displayUnit="degC")=299.15) "Set point temperature for cooling"; BaseClasses.IdealHeaterCooler[5] hea( Q_flow_nominal=70*{flo.AFloSou,flo.AFloEas,flo.AFloNor,flo.AFloWes,flo.AFloCor}) "Ideal heater"; BaseClasses.IdealHeaterCooler[5] coo( Q_flow_nominal=-50*{flo.AFloSou,flo.AFloEas,flo.AFloNor,flo.AFloWes,flo.AFloCor}) "Ideal cooling device for sensible cooling"; Controls.OBC.CDL.Continuous.MultiSum QHea_flow( nin=5) "Total heat flow rate"; Modelica.Blocks.Continuous.Integrator EHea "Heating energy"; Controls.OBC.CDL.Continuous.MultiSum QCoo_flow( nin=5) "Total heat flow rate"; Modelica.Blocks.Continuous.Integrator ECoo "Cooling energy"; equation connect(flo.TRooAir,hea.TMea); connect(THeaSet.y,hea.TSet); connect(coo[1].heaPor,flo.heaPorSou); connect(coo[2].heaPor,flo.heaPorEas); connect(coo[3].heaPor,flo.heaPorNor); connect(coo[4].heaPor,flo.heaPorWes); connect(coo[5].heaPor,flo.heaPorCor); connect(hea[1].heaPor,flo.heaPorSou); connect(hea[2].heaPor,flo.heaPorEas); connect(hea[3].heaPor,flo.heaPorNor); connect(hea[4].heaPor,flo.heaPorWes); connect(hea[5].heaPor,flo.heaPorCor); connect(THeaCoo.y,coo.TSet); connect(flo.TRooAir,coo.TMea); connect(QHea_flow.y,EHea.u); connect(hea.Q_flow,QHea_flow.u); connect(QCoo_flow.y,ECoo.u); connect(QCoo_flow.u[1:5],coo.Q_flow); end IdealHeatingCoolingWinter;

Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.Unconditioned

Open loop model of one floor

Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.Unconditioned

Information

Test case of the small office DOE reference building without an HVAC system. Each thermal zone has a constant air flow rate of unconditioned outside air.

Extends from Modelica.Icons.Example (Icon for runnable examples).

Parameters

Type	Name	Default	Description
replaceable package Medium		Buildings.Media.Air	Medium for air
String	weaName	Modelica.Utilities.Files.loa...	Name of the weather file

Connectors

Type	Name	Description
replaceable package Medium		Medium for air
Bus	weaBus	Weather data bus

Modelica definition

model Unconditioned "Open loop model of one floor" extends Modelica.Icons.Example; replaceable package Medium=Buildings.Media.Air "Medium for air"; parameter String weaName=Modelica.Utilities.Files.loadResource( "modelica://Buildings/Resources/weatherdata/USA_IL_Chicago-OHare.Intl.AP.725300_TMY3.mos") "Name of the weather file"; final parameter Modelica.SIunits.MassFlowRate mOut_flow[4]=0.3/3600*{flo.VRooSou,flo.VRooEas,flo.VRooNor,flo.VRooWes}*1.2 "Outside air infiltration for each exterior room"; BoundaryConditions.WeatherData.ReaderTMY3 weaDat( filNam=weaName, computeWetBulbTemperature=false) "Weather data reader"; BoundaryConditions.WeatherData.Bus weaBus "Weather data bus"; Buildings.ThermalZones.EnergyPlus.Examples.SmallOffice.BaseClasses.Floor flo( redeclare package Medium=Medium, nor( T_start=275.15), wes( T_start=275.15), eas( T_start=275.15), sou( T_start=275.15), cor( T_start=275.15)) "One floor of the office building"; // Above, the volume V is for Spawn obtained in the initial equation section. // Hence it is not known when the model is compiled. This leads to a // warning in Dymola and an error in Optimica (Modelon#2020031339000191) // if used in an expression for the nominal attribute of lea*(res(m_flow(nominal=....))). // Assigning the nominal attribute to a constant avoids this warning and error. Fluid.Sources.MassFlowSource_WeatherData bou[4]( redeclare each package Medium=Medium, m_flow=mOut_flow, each nPorts=1) "Infiltration, used to avoid that the absolute humidity is continuously increasing"; Fluid.Sources.Outside out( redeclare package Medium=Medium, nPorts=1) "Outside condition"; Fluid.FixedResistances.PressureDrop res( redeclare package Medium=Medium, m_flow_nominal=sum(mOut_flow), dp_nominal=10, linearized=true) "Small flow resistance for inlet"; Fluid.FixedResistances.PressureDrop res1[4]( redeclare each package Medium=Medium, each m_flow_nominal=sum(mOut_flow), each dp_nominal=10, each linearized=true) "Small flow resistance for inlet"; equation connect(weaDat.weaBus,weaBus); connect(weaBus,flo.weaBus); connect(out.ports[1],res.port_a); connect(res.port_b,flo.portsCor[1]); connect(weaBus,out.weaBus); connect(bou[:].ports[1],res1[:].port_a); connect(weaBus,bou[1].weaBus); connect(weaBus,bou[2].weaBus); connect(weaBus,bou[3].weaBus); connect(weaBus,bou[4].weaBus); connect(res1[1].port_b,flo.portsSou[1]); connect(res1[2].port_b,flo.portsEas[1]); connect(res1[3].port_b,flo.portsNor[1]); connect(res1[4].port_b,flo.portsWes[1]); end Unconditioned;