Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.Reheat.Subsequences.Validation
Collection of validation models
Information
This package contains validation models for the classes in Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.Reheat.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 unit with reheat |
| Alarms
|
Validation of model that generates alarms |
| DamperValves
|
Validate model for controlling damper and valve position |
| Overrides
|
Validation of model that overrides control |
| SystemRequests
|
Validation of model that generates system requests |
Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.Reheat.Subsequences.Validation.ActiveAirFlow
Validate the model for calculating active airflow setpoint for unit with reheat
Information
This example validates Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.Reheat.Subsequences.ActiveAirFlow for calculating active minimum and maximum airflow setpoint used in terminal unit with reheat.
Modelica definition
model ActiveAirFlow
"Validate the model for calculating active airflow setpoint for unit with reheat"
Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.Reheat.Subsequences.ActiveAirFlow
actAirSet(
final VCooMax_flow=0.5,
final VHeaMin_flow=0.1,
final VHeaMax_flow=0.4)
"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.Reheat.Subsequences.Validation.Alarms
Validation of model that generates alarms
Information
This example validates Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.Reheat.Subsequences.Alarms for generating system alarms.
Modelica definition
model Alarms "Validation of model that generates alarms"
Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.Reheat.Subsequences.Alarms ala(
final staPreMul=1,
final hotWatRes=1,
final VCooMax_flow=1,
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 disAir(
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) "AHU 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.Logical.Sources.Pulse hotPla(
final width=0.9,
final period=7500) "Hot water plant status";
Buildings.Controls.OBC.CDL.Reals.Sources.Ramp TDis(
final duration=3600,
final offset=273.15 + 20,
final height=-5) "Discharge air temperature";
Buildings.Controls.OBC.CDL.Reals.Sources.Ramp valPos(
final duration=2000,
final height=-0.7,
final offset=0.7,
final startTime=3600) "Valve position";
Buildings.Controls.OBC.CDL.Reals.Sources.Constant TSup(
final k=273.15 + 13)
"AHU supply air temperature";
Buildings.Controls.OBC.CDL.Reals.Sources.Constant TDisSet(
final k=273.15 + 30)
"Discharge airflow temperature setpoint";
Buildings.Controls.OBC.CDL.Integers.Sources.Pulse intPul(
amplitude=6,
width=0.1,
period=8500,
offset=1)
"Operation mode";
equation
connect(disAirSet.y, ala.VActSet_flow);
connect(booToRea.y, mul.u1);
connect(damPos.y, mul.u2);
connect(damSta.y, booToRea.u);
connect(disAir.y, ala.VDis_flow);
connect(supFan.y, ala.u1Fan);
connect(mul.y, ala.uDam);
connect(valPos.y, ala.uVal);
connect(TSup.y, ala.TSup);
connect(hotPla.y, ala.u1HotPla);
connect(TDis.y, ala.TDis);
connect(TDisSet.y, ala.TDisSet);
connect(intPul.y, ala.uOpeMod);
end Alarms;
Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.Reheat.Subsequences.Validation.DamperValves
Validate model for controlling damper and valve position
Information
This example validates BBuildings.Controls.OBC.ASHRAE.G36.TerminalUnits.Reheat.Subsequences.DamperValves for damper and valve control of terminal unit with reheat.
Modelica definition
model DamperValves
"Validate model for controlling damper and valve position"
Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.Reheat.Subsequences.DamperValves
damValFan1(
final VMin_flow=0.01,
final VCooMax_flow=0.09,
final VHeaMax_flow=0.08,
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=1,
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 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.Constant TSupSet(
final k=273.15 + 13)
"AHU supply air temperature setpoint";
Buildings.Controls.OBC.CDL.Reals.Sources.Ramp uHea(
final height=1,
final duration=3600,
final offset=0,
final startTime=5500) "Heating control signal";
Buildings.Controls.OBC.CDL.Reals.Sources.Ramp disAir(
final duration=7200,
final offset=0.01,
final height=0.06)
"Discharge airflow rate";
Buildings.Controls.OBC.CDL.Reals.Sources.Sin TSup(
final offset=273.15 + 13,
final amplitude=1,
final freqHz=1/3600)
"Supply air temperature";
Buildings.Controls.OBC.CDL.Reals.Sources.Constant THeaSet(
final k=273.15 + 20)
"Zone heating setpoint";
Buildings.Controls.OBC.CDL.Reals.Sources.Sin TDis(
final offset=273.15 + 13,
final amplitude=1.2,
final freqHz=1/3600) "Measured discharge air temperature";
Buildings.Controls.OBC.CDL.Reals.Sources.Ramp opeMod(
final offset=1,
final height=3,
final duration=90000) "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";
Buildings.Controls.OBC.CDL.Reals.Sources.Constant VActCooMin_flow(
final k=0.015) "Active cooling minimum flow";
Buildings.Controls.OBC.CDL.Reals.Sources.Constant VActHeaMin_flow(
final k=0.015)
"Active heating minimum flow";
Buildings.Controls.OBC.CDL.Reals.Sources.Constant VActHeaMax_flow(
final k=0.06)
"Active heating maximum airflow setpoint";
Buildings.Controls.OBC.CDL.Reals.Sources.Ramp oveFlo(
final height=3,
final duration=2000,
final 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.Logical.Sources.Pulse booPul(
final width=0.9,
final period=4800,
final shift=180)
"AHU fan status";
equation
connect(VActMin_flow.y, damValFan1.VActMin_flow);
connect(TZon.y, damValFan1.TZon);
connect(VActCooMax_flow.y, damValFan1.VActCooMax_flow);
connect(uCoo.y, damValFan1.uCoo);
connect(uHea.y, damValFan1.uHea);
connect(disAir.y, damValFan1.VDis_flow);
connect(TSupSet.y, damValFan1.TSupSet);
connect(TSup.y, damValFan1.TSup);
connect(THeaSet.y, damValFan1.THeaSet);
connect(TDis.y, damValFan1.TDis);
connect(opeMod.y,round2. u);
connect(round2.y,reaToInt2. u);
connect(reaToInt2.y, damValFan1.uOpeMod);
connect(VActCooMin_flow.y, damValFan1.VActCooMin_flow);
connect(VActHeaMin_flow.y, damValFan1.VActHeaMin_flow);
connect(VActHeaMax_flow.y, damValFan1.VActHeaMax_flow);
connect(oveFlo.y,round1. u);
connect(round1.y,reaToInt1. u);
connect(reaToInt1.y, damValFan1.oveFloSet);
connect(booPul.y, damValFan1.u1Fan);
end DamperValves;
Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.Reheat.Subsequences.Validation.Overrides
Validation of model that overrides control
Information
This example validates Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.Reheat.Subsequences.Overrides for overrideing controls.
Modelica definition
model Overrides "Validation of model that overrides control"
Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.Reheat.Subsequences.Overrides
ove
"Block outputs system requests";
Buildings.Controls.OBC.CDL.Reals.Sources.Ramp damPos(
final duration=3600,
final height=0.5,
final offset=0.5) "Damper position setpoint";
Buildings.Controls.OBC.CDL.Reals.Sources.Ramp oveDam(
final height=2,
final duration=2000,
final startTime=1000) "Override damper position";
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 heaValPos(
final duration=3600,
final height=0.5,
final offset=0.5) "Heating valve position";
Buildings.Controls.OBC.CDL.Logical.Sources.Pulse heaOff(
final width=0.75,
final period=3600)
"Close heating valve";
Buildings.Controls.OBC.CDL.Logical.Not not1
"Logical not";
equation
connect(oveDam.y, round1.u);
connect(round1.y, reaToInt1.u);
connect(reaToInt1.y, ove.oveDamPos);
connect(damPos.y, ove.uDam);
connect(heaValPos.y, ove.uVal);
connect(heaOff.y, not1.u);
connect(not1.y, ove.uHeaOff);
end Overrides;
Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.Reheat.Subsequences.Validation.SystemRequests
Validation of model that generates system requests
Information
This example validates Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.Reheat.Subsequences.SystemRequests for generating system requests.
Modelica definition
model SystemRequests
"Validation of model that generates system requests"
Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.Reheat.Subsequences.SystemRequests
sysReq(
final floHys=0.01,
final looHys=0.01,
final damPosHys=0.01,
final valPosHys=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 TCooSet(
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=-1,
final duration=2000,
final offset=1,
final startTime=1000)
"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 disAir(
final duration=7200,
final offset=0.1,
final height=0.3) "Discharge airflow rate";
Buildings.Controls.OBC.CDL.Reals.Sources.Ramp damPos(
final duration=3000,
final height=-0.7,
final offset=0.7) "Damper position";
Buildings.Controls.OBC.CDL.Logical.Sources.Pulse booPul(
final width=0.1,
final period=7200)
"After suppression";
Buildings.Controls.OBC.CDL.Reals.Sources.Ramp TDis(
final duration=3600,
final offset=273.15 + 20,
final height=-5)
"Discharge air temperature";
Buildings.Controls.OBC.CDL.Reals.Sources.Constant TDisSet(
final k=273.15 + 30)
"Discharge airflow temperature setpoint";
Buildings.Controls.OBC.CDL.Reals.Sources.Ramp valPos(
final duration=2000,
final height=-0.7,
final offset=0.7,
final startTime=3600) "Valve position";
Buildings.Controls.OBC.CDL.Logical.Not not1
"Logical not";
equation
connect(sine.y, TCooSet.u);
connect(TCooSet.y, sysReq.TCooSet);
connect(TZon.y, sysReq.TZon);
connect(uCoo.y, sysReq.uCoo);
connect(disAirSet.y, sysReq.VSet_flow);
connect(disAir.y, sysReq.VDis_flow);
connect(damPos.y, sysReq.uDam);
connect(TDisSet.y, sysReq.TDisSet);
connect(TDis.y, sysReq.TDis);
connect(valPos.y, sysReq.uVal);
connect(booPul.y, not1.u);
connect(not1.y, sysReq.uAftSup);
end SystemRequests;