Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.CoolingOnly.Subsequences.Validation
Collection of validation models
Information
This package contains validation models for the classes in Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.CoolingOnly.Subsequences.
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.
Package Content
| Name | Description |
|---|---|
 ActiveAirFlow
|
Validate the model for calculating active airflow setpoint for VAV cooling only unit |
| Alarms
|
Validation of model that generates alarms |
| Dampers
|
Validate model for controlling damper position of cooling only terminal unit |
| SystemRequests
|
Validation of model that generates system requests |
Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.CoolingOnly.Subsequences.Validation.ActiveAirFlow
Validate the model for calculating active airflow setpoint for VAV cooling only unit
Information
This example validates Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.CoolingOnly.Subsequences.ActiveAirFlow for calculating active minimum and maximum airflow setpoint used in cooling only unit control.
Modelica definition
model ActiveAirFlow
"Validate the model for calculating active airflow setpoint for VAV cooling only unit"
Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.CoolingOnly.Subsequences.ActiveAirFlow
actAirSet(final
VCooMax_flow=0.5) "Output the active airflow setpoint for terminal unit";
Buildings.Controls.OBC.CDL.Reals.Sources.Sin minFlo(
final amplitude=0.3,
final freqHz=1/3600,
final offset=0.2) "Occupied zone minimum flow";
Buildings.Controls.OBC.CDL.Reals.Sources.Ramp opeMod(
final offset=1,
final height=5,
final duration=3600)
"Operation mode";
Buildings.Controls.OBC.CDL.Conversions.RealToInteger reaToInt2
"Convert real to integer";
Buildings.Controls.OBC.CDL.Reals.Round round2(final n=0)
"Round real number to given digits";
equation
connect(opeMod.y,round2. u);
connect(round2.y,reaToInt2. u);
connect(reaToInt2.y, actAirSet.uOpeMod);
connect(minFlo.y, actAirSet.VOccMin_flow);
end ActiveAirFlow;
Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.CoolingOnly.Subsequences.Validation.Alarms
Validation of model that generates alarms
Information
This example validates Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.CoolingOnly.Subsequences.Alarms for generating system alarms.
Modelica definition
model Alarms "Validation of model that generates alarms"
Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.CoolingOnly.Subsequences.Alarms
ala(
final staPreMul=1,
final VCooMax_flow=0.5,
final floHys=0.01,
final damPosHys=0.01) "Block outputs system alarms";
Buildings.Controls.OBC.CDL.Reals.Sources.Ramp disAirSet(
final height=0.9,
final duration=7200,
final offset=0.1) "Discharge airflow rate setpoint";
Buildings.Controls.OBC.CDL.Reals.Sources.Ramp disAirRate(
final duration=7200,
final offset=0.1,
final height=0.3) "Discharge airflow rate";
Buildings.Controls.OBC.CDL.Reals.Sources.Ramp damPos(
final duration=7200,
final height=0.7,
final offset=0.3) "Damper position";
Buildings.Controls.OBC.CDL.Logical.Sources.Pulse supFan(
final width=0.75, final period=7500) "Supply fan status";
Buildings.Controls.OBC.CDL.Conversions.BooleanToReal booToRea
"Convert boolean input to real output";
Buildings.Controls.OBC.CDL.Reals.Multiply mul
"Damper position";
Buildings.Controls.OBC.CDL.Logical.Sources.Pulse damSta(
final width=0.5,
final period=7500)
"Damper open and close status";
Buildings.Controls.OBC.CDL.Integers.Sources.Pulse intPul(
amplitude=6,
width=0.1,
period=8500,
offset=1)
"Operation mode";
equation
connect(disAirRate.y, ala.VDis_flow);
connect(disAirSet.y, ala.VActSet_flow);
connect(supFan.y, ala.u1Fan);
connect(booToRea.y, mul.u1);
connect(damPos.y, mul.u2);
connect(mul.y, ala.uDam);
connect(damSta.y, booToRea.u);
connect(intPul.y, ala.uOpeMod);
end Alarms;
Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.CoolingOnly.Subsequences.Validation.Dampers
Validate model for controlling damper position of cooling only terminal unit
Information
This example validates BBuildings.Controls.OBC.ASHRAE.G36.TerminalUnits.CoolingOnly.Subsequences.Dampers for damper control of VAV cooling only terminal unit.
Modelica definition
model Dampers
"Validate model for controlling damper position of cooling only terminal unit"
Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.CoolingOnly.Subsequences.Dampers
dam1(
final VMin_flow=0.01,
final VCooMax_flow=0.09,
final kDam=1) "Output signal for controlling damper position";
Buildings.Controls.OBC.CDL.Reals.Sources.Ramp uCoo(
final height=1,
final duration=3600,
final offset=0,
final startTime=900)
"Cooling control signal";
Buildings.Controls.OBC.CDL.Reals.Sources.Constant TZon(
final k=273.15 + 22)
"Zone temperature";
Buildings.Controls.OBC.CDL.Reals.Sources.Constant TSup(
final k=273.15 + 13)
"AHU supply air temperature";
Buildings.Controls.OBC.CDL.Reals.Sources.Constant VActMin_flow(
final k=0.01)
"Active minimum airflow setpoint";
Buildings.Controls.OBC.CDL.Reals.Sources.Constant VActCooMax_flow(
final k=0.075)
"Active cooling maximum airflow setpoint";
Buildings.Controls.OBC.CDL.Reals.Sources.Sin VDis_flow(
final offset=0.015,
final amplitude=0.002,
final freqHz=1/3600) "Discharge airflow rate";
Buildings.Controls.OBC.CDL.Reals.Sources.Ramp zonSta(
final offset=3,
final height=-2,
final duration=1000,
startTime=1800) "Zone state";
Buildings.Controls.OBC.CDL.Conversions.RealToInteger reaToInt2
"Convert real to integer";
Buildings.Controls.OBC.CDL.Reals.Round round2(
final n=0)
"Round real number to given digits";
Buildings.Controls.OBC.CDL.Reals.Sources.Ramp oveFlo(
final height=3,
final duration=2000,
startTime=1000) "Override flow setpoint";
Buildings.Controls.OBC.CDL.Conversions.RealToInteger reaToInt1
"Convert real to integer";
Buildings.Controls.OBC.CDL.Reals.Round round1(final n=0)
"Round real number to given digits";
Buildings.Controls.OBC.CDL.Reals.Sources.Ramp oveDam(
final height=2,
final duration=2000,
startTime=1000) "Override damper position";
Buildings.Controls.OBC.CDL.Conversions.RealToInteger reaToInt3
"Convert real to integer";
Buildings.Controls.OBC.CDL.Reals.Round round3(final n=0)
"Round real number to given digits";
Buildings.Controls.OBC.CDL.Logical.Sources.Pulse booPul(
final width=0.9,
final period=4800,
final shift=180) "AHU fan status";
equation
connect(zonSta.y,round2. u);
connect(round2.y,reaToInt2. u);
connect(VActMin_flow.y, dam1.VActMin_flow);
connect(TSup.y, dam1.TSup);
connect(TZon.y, dam1.TZon);
connect(VActCooMax_flow.y, dam1.VActCooMax_flow);
connect(reaToInt2.y, dam1.uZonSta);
connect(VDis_flow.y, dam1.VDis_flow);
connect(uCoo.y, dam1.uCoo);
connect(oveFlo.y,round1. u);
connect(round1.y,reaToInt1. u);
connect(oveDam.y,round3. u);
connect(round3.y,reaToInt3. u);
connect(reaToInt1.y, dam1.oveFloSet);
connect(reaToInt3.y, dam1.oveDamPos);
connect(booPul.y, dam1.u1Fan);
end Dampers;
Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.CoolingOnly.Subsequences.Validation.SystemRequests
Validation of model that generates system requests
Information
This example validates Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.CoolingOnly.Subsequences.SystemRequests for generating system requests.
Modelica definition
model SystemRequests
"Validation of model that generates system requests"
Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.CoolingOnly.Subsequences.SystemRequests
sysReq(
final floHys=0.01,
final looHys=0.01,
final damPosHys=0.01) "Block outputs system requests";
Buildings.Controls.OBC.CDL.Reals.Sources.Sin sine(
final freqHz=1/7200,
final offset=296.15) "Generate data for setpoint";
Buildings.Controls.OBC.CDL.Discrete.UnitDelay TZonCooSet(
final samplePeriod=1800)
"Cooling setpoint temperature";
Buildings.Controls.OBC.CDL.Reals.Sources.Sin TZon(
final freqHz=1/7200,
final amplitude=2,
final offset=299.15) "Zone temperature";
Buildings.Controls.OBC.CDL.Reals.Sources.Ramp uCoo(
final height=0.9,
final duration=7200,
final offset=0.1) "Cooling loop signal";
Buildings.Controls.OBC.CDL.Reals.Sources.Ramp disAirSet(
final height=0.9,
final duration=7200,
final offset=0.1) "Discharge airflow rate setpoint";
Buildings.Controls.OBC.CDL.Reals.Sources.Ramp disAirRate(
final duration=7200,
final offset=0.1,
final height=0.3) "Discharge airflow rate";
Buildings.Controls.OBC.CDL.Reals.Sources.Ramp damPos(
final duration=7200,
final height=0.7,
final offset=0.3) "Damper position";
Buildings.Controls.OBC.CDL.Logical.Sources.Pulse booPul(
final width=0.1,
final period=7200)
"After suppression";
Buildings.Controls.OBC.CDL.Logical.Not not1 "Logical not";
equation
connect(sine.y, TZonCooSet.u);
connect(TZonCooSet.y, sysReq.TCooSet);
connect(TZon.y, sysReq.TZon);
connect(uCoo.y, sysReq.uCoo);
connect(disAirRate.y, sysReq.VDis_flow);
connect(disAirSet.y, sysReq.VSet_flow);
connect(damPos.y, sysReq.uDam);
connect(booPul.y, not1.u);
connect(not1.y, sysReq.uAftSup);
end SystemRequests;