Buildings.Controls.OBC.ASHRAE.G36.AHUs.SingleZone.VAV
Sequences for single zone VAV AHU control
Information
This package contains control sequences from ASHRAE Guideline 36, Section 5.18 for single zone VAV air handling unit control.
Package Content
| Name | Description |
|---|---|
 Controller
|
Single Zone AHU controller that composes subsequences for controlling fan speed, economizer, and supply air temperature |
 Economizers
|
Economizer control of single zone VAV AHU |
 SetPoints
|
Output setpoints for AHU control |
 Validation
|
Collection of validation models |
Buildings.Controls.OBC.ASHRAE.G36.AHUs.SingleZone.VAV.Controller
Single Zone AHU controller that composes subsequences for controlling fan speed, economizer, and supply air temperature
Information
Block for single zone VAV control. It outputs supply fan speed, supply air temperature setpoints for heating, economizer and cooling, zone air heating and cooling setpoints, outdoor and return air damper positions, and valve positions of heating and cooling coils. It is implemented according to the ASHRAE Guideline 36, Section 5.18.
The sequences consist of the following subsequences.
Supply fan speed control
The fan speed control is implemented according to Section 5.18.4. It outputs
the control signal yFan to adjust the speed of the supply fan.
See
Buildings.Controls.OBC.ASHRAE.G36.AHUs.SingleZone.VAV.SetPoints.Supply
for more detailed description.
Supply air temperature setpoints
The supply air temperature setpoints control sequences are implemented based on Section 5.18.4. They are implemented in the same control block as the supply fan speed control. The supply air temperature setpoint for heating and economizer is the same; while the supply air temperature setpoint for cooling has a separate control loop. See Buildings.Controls.OBC.ASHRAE.G36.AHUs.SingleZone.VAV.SetPoints.Supply for more detailed description.
Economizer control
The Economizer control block outputs outdoor and return air damper position, i.e. yOutDamPos and
yRetDamPos, as well as control signal for heating coil yHeaCoi.
See
Buildings.Controls.OBC.ASHRAE.G36.AHUs.SingleZone.VAV.Economizers.Controller
for more detailed description.
Minimum outdoor airflow
Control sequences are implemented to compute the minimum outdoor airflow setpoint, which is used as an input for the economizer control. More detailed information can be found at Buildings.Controls.OBC.ASHRAE.G36.VentilationZones.ASHRAE62_1.Setpoints.
Zone air heating and cooling setpoints
Zone air heating and cooling setpoints as well as system operation modes are detailed at Buildings.Controls.OBC.ASHRAE.G36.AHUs.SingleZone.VAV.SetPoints.ModeAndSetPoints.
Coil valve control
The subsequence retrieves supply air temperature setpoint from previous sequence. Along with the measured supply air temperature and the supply fan status, it generates coil valve positions. See Buildings.Controls.OBC.ASHRAE.G36.AHUs.SingleZone.VAV.SetPoints.CoolingCoil for more detailed description.
Freeze protection
Based on the Section 5.18.11, the sequence enables freeze protection if the measured supply air temperature belows certain thresholds. There are three protection stages. See Buildings.Controls.OBC.ASHRAE.G36.AHUs.SingleZone.VAV.SetPoints.FreezeProtection for more detailed description.
Building pressure control
By selecting different building pressure control designs, which includes using actuated relief dampers without fans, using actuated relief dampers with relief fan, using return fans. See belows sequences for more detailed description:
- Buildings.Controls.OBC.ASHRAE.G36.AHUs.SingleZone.VAV.SetPoints.ReliefDamper
- Relief fan control Buildings.Controls.OBC.ASHRAE.G36.AHUs.SingleZone.VAV.SetPoints.ReliefFan is not included in the AHU controller. This sequence controls all the relief fans that are serving one common space, which may include multiple air handling units.
- Buildings.Controls.OBC.ASHRAE.G36.AHUs.SingleZone.VAV.SetPoints.ReturnFan
Plant request
According to the Section 5.18.15, the sequence send out heating or cooling plant requests if the supply air temperature is below or above threshold value, or the heating or cooling valves have been widely open for certain times. See Buildings.Controls.OBC.ASHRAE.G36.AHUs.SingleZone.VAV.SetPoints.PlantRequests for more detailed description.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| EnergyStandard | eneStd | Buildings.Controls.OBC.ASHRA... | Energy standard, ASHRAE 90.1 or Title 24 |
| VentilationStandard | venStd | Buildings.Controls.OBC.ASHRA... | Ventilation standard, ASHRAE 62.1 or Title 24 |
| ControlEconomizer | ecoHigLimCon | Buildings.Controls.OBC.ASHRA... | Economizer high limit control device |
| ASHRAEClimateZone | ashCliZon | Buildings.Controls.OBC.ASHRA... | ASHRAE climate zone |
| Title24ClimateZone | tit24CliZon | Buildings.Controls.OBC.ASHRA... | California Title 24 climate zone |
| FreezeStat | freSta | Buildings.Controls.OBC.ASHRA... | Type of freeze stat |
| Boolean | have_winSen | false | Check if the zone has window status sensor |
| Boolean | have_occSen | false | Check if the zone has occupancy sensor |
| Boolean | have_hotWatCoi | true | True: the AHU has hot water heating coil |
| Boolean | have_eleHeaCoi | false | True: the AHU has electric heating coil |
| Boolean | have_CO2Sen | true | True: the zone has CO2 sensor |
| BuildingPressureControlTypes | buiPreCon | Buildings.Controls.OBC.ASHRA... | Type of building pressure control system |
| Boolean | have_ahuRelFan | true | True: relief fan is part of AHU; False: the relief fans group that may associate multiple AHUs |
| Design conditions | |||
| Real | VAreBreZon_flow | 0 | Design area component of the breathing zone outdoor airflow [m3/s] |
| Real | VPopBreZon_flow | 0 | Design population component of the breathing zone outdoor airflow [m3/s] |
| Setpoints adjustment | |||
| Adjustable settings | |||
| Boolean | have_locAdj | true | True: the zone has local setpoint adjustment knob |
| Boolean | sepAdj | true | True: cooling and heating setpoint can be adjusted separately |
| Boolean | ignDemLim | true | Flag, set to true to exempt individual zone from demand limit setpoint adjustment |
| Limits | |||
| Real | TActCoo_max | 300.15 | Maximum cooling setpoint during on [K] |
| Real | TActCoo_min | 295.15 | Minimum cooling setpoint during on [K] |
| Real | TActHea_max | 295.15 | Maximum heating setpoint during on [K] |
| Real | TActHea_min | 291.15 | Minimum heating setpoint during on [K] |
| Real | TWinOpeCooSet | 322.15 | Cooling setpoint when window is open [K] |
| Real | TWinOpeHeaSet | 277.15 | Heating setpoint when window is open [K] |
| Demand control adjustment | |||
| Real | incTSetDem_1 | 0.5 | Cooling setpoint increase value (degC) when cooling demand limit level 1 is imposed [K] |
| Real | incTSetDem_2 | 1 | Cooling setpoint increase value (degC) when cooling demand limit level 2 is imposed [K] |
| Real | incTSetDem_3 | 2 | Cooling setpoint increase value (degC) when cooling demand limit level 3 is imposed [K] |
| Real | decTSetDem_1 | 0.5 | Heating setpoint decrease value (degC) when heating demand limit level 1 is imposed [K] |
| Real | decTSetDem_2 | 1 | Heating setpoint decrease value (degC) when heating demand limit level 2 is imposed [K] |
| Real | decTSetDem_3 | 2 | Heating setpoint decrease value (degC) when heating demand limit level 3 is imposed [K] |
| Operation mode | |||
| Real | preWarCooTim | 10800 | Maximum cool-down or warm-up time [s] |
| Real | TZonFreProOn | 277.15 | Threshold temperature to activate the freeze protection mode [K] |
| Real | TZonFreProOff | 280.15 | Threshold temperature to end the freeze protection mode [K] |
| Hysteresis | |||
| Real | bouLim | 1 | Threshold of temperature difference for indicating the end of setback or setup mode |
| Real | uLow | -0.1 | Low limit of the hysteresis for checking temperature difference |
| Real | uHigh | 0.1 | High limit of the hysteresis for checking temperature difference |
| Loops control | |||
| Cooling loop | |||
| SimpleController | cooLooCon | Buildings.Controls.OBC.CDL.T... | Cooling loop controller type |
| Real | kCoo | 0.1 | Gain for cooling control loop signal [1/K] |
| Real | TiCoo | 900 | Time constant of integrator block for cooling control loop signal [s] |
| Real | TdCoo | 0.1 | Time constant of derivative block for cooling control loop signal [s] |
| Heating loop | |||
| SimpleController | heaLooCon | Buildings.Controls.OBC.CDL.T... | Heating loop controller type |
| Real | kHea | 0.1 | Gain for heating control loop signal [1/K] |
| Real | TiHea | 900 | Time constant of integrator block for heating control loop signal [s] |
| Real | TdHea | 0.1 | Time constant of derivative block for heating control loop signal [s] |
| Supply setpoints | |||
| Temperature | |||
| Real | TSup_max | 303.15 | Maximum supply air temperature for heating [K] |
| Real | TSup_min | 291.15 | Minimum supply air temperature for cooling [K] |
| Real | TSupDew_max | 290.15 | Maximum supply air dew-point temperature. It's typically only needed in humid type “A” climates. A typical value is 17°C. For mild and dry climates, a high set point (e.g. 24°C) should be entered for maximum efficiency [K] |
| Real | TSupDea_min | 294.15 | Minimum supply temperature when it is in deadband state [K] |
| Real | TSupDea_max | 297.15 | Maximum supply temperature when it is in deadband state [K] |
| Real | temPoiOne | 0.5 | Point 1 on x-axis of control map for temperature control, when it is in heating state |
| Real | temPoiTwo | 0.25 | Point 2 on x-axis of control map for temperature control, when it is in cooling state |
| Real | temPoiThr | 0.5 | Point 3 on x-axis of control map for temperature control, when it is in cooling state |
| Real | temPoiFou | 0.75 | Point 4 on x-axis of control map for temperature control, when it is in cooling state |
| Fan speed | |||
| Real | maxHeaSpe | 1 | Maximum fan speed for heating [1] |
| Real | maxCooSpe | 1 | Maximum fan speed for cooling [1] |
| Real | minSpe | 0.1 | Minimum fan speed [1] |
| Real | spePoiOne | 0.5 | Point 1 on x-axis of control map for speed control, when it is in heating state |
| Real | spePoiTwo | 0.25 | Point 2 on x-axis of control map for speed control, when it is in cooling state |
| Real | spePoiThr | 0.5 | Point 3 on x-axis of control map for speed control, when it is in cooling state |
| Real | spePoiFou | 0.75 | Point 4 on x-axis of control map for speed control, when it is in cooling state |
| Hysteresis | |||
| Real | looHys | 0.05 | Loop output hysteresis below which the output will be seen as zero |
| Outdoor airflow | |||
| ASHRAE62.1 | |||
| Boolean | permit_occStandby | true | True: occupied-standby mode is permitted |
| Real | zonDisEff_cool | 1.0 | Zone cooling air distribution effectiveness |
| Real | zonDisEff_heat | 0.8 | Zone heating air distribution effectiveness |
| Title 24 | |||
| Real | VOccMin_flow | 0 | Zone minimum outdoor airflow for occupants |
| Real | VAreMin_flow | 0 | Zone minimum outdoor airflow for building area |
| Real | VZonMin_flow | 0 | Design zone minimum airflow setpoint |
| Economizer | |||
| Real | uMin | 0.1 | Lower limit of controller output at which the dampers are at their limits [1] |
| Real | uMax | 0.9 | Upper limit of controller output at which the dampers are at their limits [1] |
| Modulation | |||
| SimpleController | ecoModCon | Buildings.Controls.OBC.CDL.T... | Type of controller |
| Real | kMod | 1 | Gain of modulation controller |
| Real | TiMod | 300 | Time constant of modulation controller integrator block [s] |
| Real | TdMod | 0.1 | Time constant of derivative block for modulation controller [s] |
| Commissioning | |||
| Real | supFanSpe_min | 0.1 | Minimum supply fan operation speed [1] |
| Real | supFanSpe_max | 0.9 | Maximum supply fan operation speed [1] |
| Real | VOutMin_flow | 1.0 | Calculated minimum outdoor airflow rate [m3/s] |
| Real | VOutDes_flow | 2.0 | Calculated design outdoor airflow rate [m3/s] |
| Real | outDamMinFloMinSpe | 0.4 | Outdoor air damper position to supply minimum outdoor airflow at minimum fan speed [1] |
| Real | outDamMinFloMaxSpe | 0.3 | Outdoor air damper position to supply minimum outdoor airflow at maximum fan speed [1] |
| Real | outDamDesFloMinSpe | 0.9 | Outdoor air damper position to supply design outdoor airflow at minimum fan speed [1] |
| Real | outDamDesFloMaxSpe | 0.8 | Outdoor air damper position to supply design outdoor airflow at maximum fan speed [1] |
| Real | outDamPhy_max | 1 | Physically fixed maximum position of the outdoor air damper [1] |
| Real | outDamPhy_min | 0 | Physically fixed minimum position of the outdoor air damper [1] |
| Real | retDamPhy_max | 1 | Physically fixed maximum position of the return air damper [1] |
| Real | retDamPhy_min | 0 | Physically fixed minimum position of the return air damper [1] |
| Hysteresis | |||
| Real | delTOutHys | 1 | Delta between the temperature hysteresis high and low limit [K] |
| Cooling coil | |||
| SimpleController | cooCoiCon | Buildings.Controls.OBC.CDL.T... | Type of controller |
| Real | kCooCoi | 0.1 | Gain for cooling coil control loop signal [1/K] |
| Real | TiCooCoi | 900 | Time constant of integrator block for cooling coil control loop signal [s] |
| Real | TdCooCoi | 0.1 | Time constant of derivative block for cooling coil control loop signal [s] |
| Freeze protection | |||
| Integer | minHotWatReq | 2 | Minimum heating hot-water plant request to active the heating plant |
| Heating coil control | |||
| SimpleController | freHeaCoiCon | Buildings.Controls.OBC.CDL.T... | Heating coil controller |
| Real | kFreHea | 1 | Gain of coil controller |
| Real | TiFreHea | 0.5 | Time constant of integrator block [s] |
| Real | TdFreHea | 0.1 | Time constant of derivative block [s] |
| Real | yMaxFreHea | 1 | Upper limit of output |
| Real | yMinFreHea | 0 | Lower limit of output |
| Pressure control | |||
| Relief damper | |||
| Real | relDam_min | 0.1 | Relief-damper position that maintains a building pressure of 12 Pa while the economizer damper is positioned to provide minimum outdoor air while the supply fan is at minimum speed [1] |
| Real | relDam_max | 1 | Relief-damper position that maintains a building pressure of 12 Pa while the economizer damper is fully open and the fan speed is at cooling maximum [1] |
| Return fan | |||
| Real | speDif | -0.1 | Speed difference between supply and return fan to maintain building pressure at desired pressure |
| Real | dpBuiSet | 12 | Building static pressure difference relative to ambient (positive to pressurize the building) [Pa] |
| Relief fan | |||
| Real | relFanSpe_min | 0.1 | Relief fan minimum speed |
| Real | kRelFan | 1 | Gain of relief fan controller, normalized using dpBuiSet [1] |
| Advanced | |||
| Hysteresis | |||
| Real | posHys | 0.05 | Hysteresis for damper position check |
| Real | Thys | 0.25 | Hysteresis for checking temperature difference [K] |
| Real | delEntHys | 1000 | Delta between the enthalpy hysteresis high and low limits [J/kg] |
| Real | floHys | 0.01 | Near zero flow rate, below which the flow rate or difference will be seen as zero |
Connectors
| Type | Name | Description |
|---|---|---|
| input RealInput | TOut | Outside air temperature [K] |
| input RealInput | cooDowTim | Cool-down time retrieved from optimal cool-down block [s] |
| input RealInput | warUpTim | Warm-up time retrieved from optimal warm-up block [s] |
| input BooleanInput | u1Occ | Current occupancy period, true if it is in occupant period |
| input RealInput | tNexOcc | Time to next occupied period [s] |
| input RealInput | TZon | Measured zone temperatures [K] |
| input RealInput | TOccHeaSet | Zone occupied heating setpoint temperatures [K] |
| input RealInput | TOccCooSet | Zone occupied cooling setpoint temperatures [K] |
| input RealInput | TUnoHeaSet | Zone unoccupied heating setpoint temperatures [K] |
| input RealInput | TUnoCooSet | Zone unoccupied cooling setpoint temperatures [K] |
| input RealInput | setAdj | Setpoint adjustment value |
| input RealInput | cooSetAdj | Cooling setpoint adjustment value |
| input RealInput | heaSetAdj | Heating setpoint adjustment value |
| input BooleanInput | u1OccSen | Occupancy sensor (occupied=true, unoccupied=false) |
| input IntegerInput | uCooDemLimLev | Cooling demand limit level |
| input IntegerInput | uHeaDemLimLev | Heating demand limit level |
| input RealInput | ppmCO2Set | CO2 concentration setpoint |
| input RealInput | ppmCO2 | Detected CO2 concentration |
| input RealInput | TAirSup | Measured supply air temperature [K] |
| input BooleanInput | u1Win | Window status, true if open, false if closed |
| input RealInput | hOut | Outdoor air enthalpy [J/kg] |
| input RealInput | hAirRet | Return air enthalpy [J/kg] |
| input RealInput | TAirRet | Used only for fixed plus differential dry bulb temperature high limit cutoff [K] |
| input BooleanInput | u1FreSta | Freeze protection stat signal |
| input BooleanInput | u1SofSwiRes | Freeze protection reset signal from software switch |
| input RealInput | dpBui | Measured building static pressure difference, relative to ambient (positive if pressurized) [Pa] |
| input BooleanInput | u1RelFan | Relief fan commanded on |
| input RealInput | uRelFan | Relief fan commanded speed [1] |
| input RealInput | TAirMix | Measured mixed air temperature, used for freeze protection [K] |
| input RealInput | uOutDam | Outdoor damper position [1] |
| input RealInput | uSupFan_actual | Actual supply fan speed [1] |
| input RealInput | uCooCoi_actual | Cooling coil valve actual position [1] |
| input RealInput | uHeaCoi_actual | Heating coil valve actual position [1] |
| output RealOutput | TSupHeaEcoSet | Temperature setpoint for heating coil and for economizer [K] |
| output RealOutput | TSupCooSet | Cooling supply air temperature setpoint [K] |
| output RealOutput | TZonHeaSet | Zone heating setpoint temperature [K] |
| output RealOutput | TZonCooSet | Zone cooling setpoint temperature [K] |
| output BooleanOutput | y1EneCHWPum | Commanded on to energize chilled water pump |
| output RealOutput | yRetDam | Return air damper commanded position [1] |
| output RealOutput | yOutDam | Outdoor air damper commanded position [1] |
| output BooleanOutput | y1SupFan | Supply fan commanded on |
| output RealOutput | ySupFan | Supply fan commanded speed [1] |
| output BooleanOutput | y1RetFan | Return fan commanded on |
| output RealOutput | yRetFan | Return fan commanded speed [1] |
| output BooleanOutput | y1RelFan | Relief fan commanded on |
| output RealOutput | yRelFan | Relief fan commanded speed [1] |
| output RealOutput | yCooCoi | Cooling coil valve commanded position [1] |
| output RealOutput | yHeaCoi | Heating coil valve commanded position [1] |
| output IntegerOutput | yAla | Alarm level |
| output RealOutput | yRelDam | Relief damper commanded position [1] |
| output BooleanOutput | y1ExhDam | Exhaust damper command on |
| output IntegerOutput | yChiWatResReq | Chilled water reset request |
| output IntegerOutput | yChiPlaReq | Chiller plant request |
| output IntegerOutput | yHotWatResReq | Hot water reset request |
| output IntegerOutput | yHotWatPlaReq | Hot water plant request |
Modelica definition
block Controller
"Single Zone AHU controller that composes subsequences for controlling fan speed, economizer, and supply air temperature"
parameter Buildings.Controls.OBC.ASHRAE.G36.Types.EnergyStandard eneStd=Buildings.Controls.OBC.ASHRAE.G36.Types.EnergyStandard.ASHRAE90_1_2016
"Energy standard, ASHRAE 90.1 or Title 24";
parameter Buildings.Controls.OBC.ASHRAE.G36.Types.VentilationStandard venStd=Buildings.Controls.OBC.ASHRAE.G36.Types.VentilationStandard.ASHRAE62_1_2016
"Ventilation standard, ASHRAE 62.1 or Title 24";
parameter Buildings.Controls.OBC.ASHRAE.G36.Types.ControlEconomizer ecoHigLimCon=Buildings.Controls.OBC.ASHRAE.G36.Types.ControlEconomizer.
FixedDryBulb
"Economizer high limit control device";
parameter Buildings.Controls.OBC.ASHRAE.G36.Types.ASHRAEClimateZone ashCliZon=Buildings.Controls.OBC.ASHRAE.G36.Types.ASHRAEClimateZone.Zone_3A
"ASHRAE climate zone";
parameter Buildings.Controls.OBC.ASHRAE.G36.Types.Title24ClimateZone tit24CliZon=Buildings.Controls.OBC.ASHRAE.G36.Types.Title24ClimateZone.Not_Specified
"California Title 24 climate zone";
parameter Buildings.Controls.OBC.ASHRAE.G36.Types.FreezeStat freSta=Buildings.Controls.OBC.ASHRAE.G36.Types.FreezeStat.No_freeze_stat
"Type of freeze stat";
parameter Boolean have_winSen=false
"Check if the zone has window status sensor";
parameter Boolean have_occSen=false
"Check if the zone has occupancy sensor";
parameter Boolean have_hotWatCoi=true
"True: the AHU has hot water heating coil";
parameter Boolean have_eleHeaCoi=false
"True: the AHU has electric heating coil";
parameter Boolean have_CO2Sen=true
"True: the zone has CO2 sensor";
parameter Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes
buiPreCon=Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.
BarometricRelief
"Type of building pressure control system";
parameter Boolean have_ahuRelFan=true
"True: relief fan is part of AHU; False: the relief fans group that may associate multiple AHUs";
parameter Real VAreBreZon_flow(unit="m3/s")=0
"Design area component of the breathing zone outdoor airflow";
parameter Real VPopBreZon_flow(unit="m3/s")=0
"Design population component of the breathing zone outdoor airflow";
// ----------- parameters for setpoint adjustment -----------
parameter Boolean have_locAdj=true
"True: the zone has local setpoint adjustment knob";
parameter Boolean sepAdj=true
"True: cooling and heating setpoint can be adjusted separately";
parameter Boolean ignDemLim=true
"Flag, set to true to exempt individual zone from demand limit setpoint adjustment";
parameter Real TActCoo_max(
unit="K",
displayUnit="degC")=300.15
"Maximum cooling setpoint during on";
parameter Real TActCoo_min(
unit="K",
displayUnit="degC")=295.15
"Minimum cooling setpoint during on";
parameter Real TActHea_max(
unit="K",
displayUnit="degC")=295.15
"Maximum heating setpoint during on";
parameter Real TActHea_min(
unit="K",
displayUnit="degC")=291.15
"Minimum heating setpoint during on";
parameter Real TWinOpeCooSet(
unit="K",
displayUnit="degC")=322.15
"Cooling setpoint when window is open";
parameter Real TWinOpeHeaSet(
unit="K",
displayUnit="degC")=277.15
"Heating setpoint when window is open";
parameter Real incTSetDem_1(unit="K")=0.5
"Cooling setpoint increase value (degC) when cooling demand limit level 1 is imposed";
parameter Real incTSetDem_2(unit="K")=1
"Cooling setpoint increase value (degC) when cooling demand limit level 2 is imposed";
parameter Real incTSetDem_3(unit="K")=2
"Cooling setpoint increase value (degC) when cooling demand limit level 3 is imposed";
parameter Real decTSetDem_1(unit="K")=0.5
"Heating setpoint decrease value (degC) when heating demand limit level 1 is imposed";
parameter Real decTSetDem_2(unit="K")=1
"Heating setpoint decrease value (degC) when heating demand limit level 2 is imposed";
parameter Real decTSetDem_3(unit="K")=2
"Heating setpoint decrease value (degC) when heating demand limit level 3 is imposed";
parameter Real preWarCooTim(unit="s")=10800
"Maximum cool-down or warm-up time";
parameter Real TZonFreProOn(
unit="K",
displayUnit="degC")=277.15
"Threshold temperature to activate the freeze protection mode";
parameter Real TZonFreProOff(
unit="K",
displayUnit="degC")=280.15
"Threshold temperature to end the freeze protection mode";
parameter Real bouLim=1
"Threshold of temperature difference for indicating the end of setback or setup mode";
parameter Real uLow=-0.1
"Low limit of the hysteresis for checking temperature difference";
parameter Real uHigh=0.1
"High limit of the hysteresis for checking temperature difference";
// ----------- parameters for cooling and heating loop -----------
parameter Buildings.Controls.OBC.CDL.Types.SimpleController cooLooCon=
Buildings.Controls.OBC.CDL.Types.SimpleController.PI "Cooling loop controller type";
parameter Real kCoo(unit="1/K")=0.1
"Gain for cooling control loop signal";
parameter Real TiCoo(unit="s")=900
"Time constant of integrator block for cooling control loop signal";
parameter Real TdCoo(unit="s")=0.1
"Time constant of derivative block for cooling control loop signal";
parameter Buildings.Controls.OBC.CDL.Types.SimpleController heaLooCon=
Buildings.Controls.OBC.CDL.Types.SimpleController.PI
"Heating loop controller type";
parameter Real kHea(unit="1/K")=0.1
"Gain for heating control loop signal";
parameter Real TiHea(unit="s")=900
"Time constant of integrator block for heating control loop signal";
parameter Real TdHea(unit="s")=0.1
"Time constant of derivative block for heating control loop signal";
// ----------- parameters for supply setpoints settings -----------
parameter Real TSup_max(
unit="K",
displayUnit="degC")=303.15
"Maximum supply air temperature for heating";
parameter Real TSup_min(
unit="K",
displayUnit="degC")=291.15
"Minimum supply air temperature for cooling";
parameter Real TSupDew_max(
unit="K",
displayUnit="degC")=290.15
"Maximum supply air dew-point temperature. It's typically only needed in humid type “A” climates. A typical value is 17°C.
For mild and dry climates, a high set point (e.g. 24°C) should be entered for maximum efficiency";
parameter Real TSupDea_min(
unit="K",
displayUnit="degC")=294.15
"Minimum supply temperature when it is in deadband state";
parameter Real TSupDea_max(
unit="K",
displayUnit="degC")=297.15
"Maximum supply temperature when it is in deadband state";
parameter Real temPoiOne=0.5
"Point 1 on x-axis of control map for temperature control, when it is in heating state";
parameter Real temPoiTwo=0.25
"Point 2 on x-axis of control map for temperature control, when it is in cooling state";
parameter Real temPoiThr=0.5
"Point 3 on x-axis of control map for temperature control, when it is in cooling state";
parameter Real temPoiFou=0.75
"Point 4 on x-axis of control map for temperature control, when it is in cooling state";
parameter Real maxHeaSpe(unit="1")=1
"Maximum fan speed for heating";
parameter Real maxCooSpe(unit="1")=1
"Maximum fan speed for cooling";
parameter Real minSpe(unit="1")=0.1
"Minimum fan speed";
parameter Real spePoiOne=0.5
"Point 1 on x-axis of control map for speed control, when it is in heating state";
parameter Real spePoiTwo=0.25
"Point 2 on x-axis of control map for speed control, when it is in cooling state";
parameter Real spePoiThr=0.5
"Point 3 on x-axis of control map for speed control, when it is in cooling state";
parameter Real spePoiFou=0.75
"Point 4 on x-axis of control map for speed control, when it is in cooling state";
parameter Real looHys=0.05
"Loop output hysteresis below which the output will be seen as zero";
// ----------- parameters for minimum outdoor airflow setpoints -----------
parameter Boolean permit_occStandby=true
"True: occupied-standby mode is permitted";
parameter Real zonDisEff_cool=1.0
"Zone cooling air distribution effectiveness";
parameter Real zonDisEff_heat=0.8
"Zone heating air distribution effectiveness";
parameter Real VOccMin_flow=0
"Zone minimum outdoor airflow for occupants";
parameter Real VAreMin_flow=0
"Zone minimum outdoor airflow for building area";
parameter Real VZonMin_flow=0
"Design zone minimum airflow setpoint";
// ----------- parameters for economizer control -----------
parameter Real uMin(unit="1")=0.1
"Lower limit of controller output at which the dampers are at their limits";
parameter Real uMax(unit="1")=0.9
"Upper limit of controller output at which the dampers are at their limits";
parameter Buildings.Controls.OBC.CDL.Types.SimpleController ecoModCon=
Buildings.Controls.OBC.CDL.Types.SimpleController.PI
"Type of controller";
parameter Real kMod=1 "Gain of modulation controller";
parameter Real TiMod(unit="s")=300
"Time constant of modulation controller integrator block";
parameter Real TdMod(unit="s")=0.1
"Time constant of derivative block for modulation controller";
parameter Real supFanSpe_min(unit="1")=0.1
"Minimum supply fan operation speed";
parameter Real supFanSpe_max(unit="1")=0.9
"Maximum supply fan operation speed";
parameter Real VOutMin_flow(unit="m3/s")=1.0
"Calculated minimum outdoor airflow rate";
parameter Real VOutDes_flow(unit="m3/s")=2.0
"Calculated design outdoor airflow rate";
parameter Real outDamMinFloMinSpe(unit="1")=0.4
"Outdoor air damper position to supply minimum outdoor airflow at minimum fan speed";
parameter Real outDamMinFloMaxSpe(unit="1")=0.3
"Outdoor air damper position to supply minimum outdoor airflow at maximum fan speed";
parameter Real outDamDesFloMinSpe(unit="1")=0.9
"Outdoor air damper position to supply design outdoor airflow at minimum fan speed";
parameter Real outDamDesFloMaxSpe(unit="1")=0.8
"Outdoor air damper position to supply design outdoor airflow at maximum fan speed";
parameter Real outDamPhy_max(unit="1")=1
"Physically fixed maximum position of the outdoor air damper";
parameter Real outDamPhy_min(unit="1")=0
"Physically fixed minimum position of the outdoor air damper";
parameter Real retDamPhy_max(unit="1")=1
"Physically fixed maximum position of the return air damper";
parameter Real retDamPhy_min(unit="1")=0
"Physically fixed minimum position of the return air damper";
parameter Real delTOutHys(
unit="K",
displayUnit="K")=1
"Delta between the temperature hysteresis high and low limit";
// ----------- parameters for cooling coil control -----------
parameter Buildings.Controls.OBC.CDL.Types.SimpleController cooCoiCon=
Buildings.Controls.OBC.CDL.Types.SimpleController.PI
"Type of controller";
parameter Real kCooCoi(unit="1/K")=0.1
"Gain for cooling coil control loop signal";
parameter Real TiCooCoi(unit="s")=900
"Time constant of integrator block for cooling coil control loop signal";
parameter Real TdCooCoi(unit="s")=0.1
"Time constant of derivative block for cooling coil control loop signal";
// ----------- parameters for freeze protection -----------
parameter Integer minHotWatReq=2
"Minimum heating hot-water plant request to active the heating plant";
parameter Buildings.Controls.OBC.CDL.Types.SimpleController freHeaCoiCon=
Buildings.Controls.OBC.CDL.Types.SimpleController.PI
"Heating coil controller";
parameter Real kFreHea=1 "Gain of coil controller";
parameter Real TiFreHea(unit="s")=0.5
"Time constant of integrator block";
parameter Real TdFreHea(unit="s")=0.1
"Time constant of derivative block";
parameter Real yMaxFreHea=1
"Upper limit of output";
parameter Real yMinFreHea=0
"Lower limit of output";
// ----------- parameters for building pressure control -----------
parameter Real relDam_min(unit="1")=0.1
"Relief-damper position that maintains a building pressure of 12 Pa while the economizer damper is positioned to provide minimum outdoor air while the supply fan is at minimum speed";
parameter Real relDam_max(unit="1")=1
"Relief-damper position that maintains a building pressure of 12 Pa while the economizer damper is fully open and the fan speed is at cooling maximum";
parameter Real speDif=-0.1
"Speed difference between supply and return fan to maintain building pressure at desired pressure";
parameter Real dpBuiSet(
unit="Pa",
displayUnit="Pa")=12
"Building static pressure difference relative to ambient (positive to pressurize the building)";
parameter Real relFanSpe_min(
final min=0,
final max=1)= 0.1
"Relief fan minimum speed";
parameter Real kRelFan(unit="1")=1
"Gain of relief fan controller, normalized using dpBuiSet";
// ----------- Advanced -----------
parameter Real posHys=0.05 "Hysteresis for damper position check";
parameter Real Thys(unit="K")=0.25
"Hysteresis for checking temperature difference";
parameter Real delEntHys(unit="J/kg")=1000
"Delta between the enthalpy hysteresis high and low limits";
parameter Real floHys=0.01
"Near zero flow rate, below which the flow rate or difference will be seen as zero";
Buildings.Controls.OBC.CDL.Interfaces.RealInput TOut(
final unit="K",
displayUnit="degC",
final quantity = "ThermodynamicTemperature")
"Outside air temperature";
Buildings.Controls.OBC.CDL.Interfaces.RealInput cooDowTim(
final unit="s",
final quantity="Time")
"Cool-down time retrieved from optimal cool-down block";
Buildings.Controls.OBC.CDL.Interfaces.RealInput warUpTim(
final unit="s",
final quantity="Time")
"Warm-up time retrieved from optimal warm-up block";
Buildings.Controls.OBC.CDL.Interfaces.BooleanInput u1Occ
"Current occupancy period, true if it is in occupant period";
Buildings.Controls.OBC.CDL.Interfaces.RealInput tNexOcc(
final unit="s",
final quantity="Time")
"Time to next occupied period";
Buildings.Controls.OBC.CDL.Interfaces.RealInput TZon(
final unit="K",
displayUnit="degC",
final quantity = "ThermodynamicTemperature")
"Measured zone temperatures";
Buildings.Controls.OBC.CDL.Interfaces.RealInput TOccHeaSet(
final unit="K",
displayUnit="degC",
final quantity="ThermodynamicTemperature")
"Zone occupied heating setpoint temperatures";
Buildings.Controls.OBC.CDL.Interfaces.RealInput TOccCooSet(
final unit="K",
displayUnit="degC",
final quantity="ThermodynamicTemperature")
"Zone occupied cooling setpoint temperatures";
Buildings.Controls.OBC.CDL.Interfaces.RealInput TUnoHeaSet(
final unit="K",
displayUnit="degC",
final quantity="ThermodynamicTemperature")
"Zone unoccupied heating setpoint temperatures";
Buildings.Controls.OBC.CDL.Interfaces.RealInput TUnoCooSet(
final unit="K",
displayUnit="degC",
final quantity="ThermodynamicTemperature")
"Zone unoccupied cooling setpoint temperatures";
Buildings.Controls.OBC.CDL.Interfaces.RealInput setAdj
if have_locAdj and not sepAdj
"Setpoint adjustment value";
Buildings.Controls.OBC.CDL.Interfaces.RealInput cooSetAdj
if have_locAdj and sepAdj
"Cooling setpoint adjustment value";
Buildings.Controls.OBC.CDL.Interfaces.RealInput heaSetAdj
if have_locAdj and sepAdj
"Heating setpoint adjustment value";
Buildings.Controls.OBC.CDL.Interfaces.BooleanInput u1OccSen if have_occSen
"Occupancy sensor (occupied=true, unoccupied=false)";
Buildings.Controls.OBC.CDL.Interfaces.IntegerInput uCooDemLimLev
"Cooling demand limit level";
Buildings.Controls.OBC.CDL.Interfaces.IntegerInput uHeaDemLimLev
"Heating demand limit level";
Buildings.Controls.OBC.CDL.Interfaces.RealInput ppmCO2Set if have_CO2Sen
"CO2 concentration setpoint";
Buildings.Controls.OBC.CDL.Interfaces.RealInput ppmCO2 if have_CO2Sen
"Detected CO2 concentration";
Buildings.Controls.OBC.CDL.Interfaces.RealInput TAirSup(
final unit="K",
displayUnit="degC",
final quantity="ThermodynamicTemperature")
"Measured supply air temperature";
Buildings.Controls.OBC.CDL.Interfaces.BooleanInput u1Win if have_winSen
"Window status, true if open, false if closed";
Buildings.Controls.OBC.CDL.Interfaces.RealInput hOut(
final unit="J/kg",
final quantity="SpecificEnergy")
if (ecoHigLimCon == Buildings.Controls.OBC.ASHRAE.G36.Types.ControlEconomizer.DifferentialEnthalpyWithFixedDryBulb
or ecoHigLimCon == Buildings.Controls.OBC.ASHRAE.G36.Types.ControlEconomizer.FixedEnthalpyWithFixedDryBulb)
"Outdoor air enthalpy";
Buildings.Controls.OBC.CDL.Interfaces.RealInput hAirRet(
final unit="J/kg",
final quantity="SpecificEnergy")
if (eneStd == Buildings.Controls.OBC.ASHRAE.G36.Types.EnergyStandard.ASHRAE90_1_2016
and ecoHigLimCon == Buildings.Controls.OBC.ASHRAE.G36.Types.ControlEconomizer.DifferentialEnthalpyWithFixedDryBulb)
"Return air enthalpy";
Buildings.Controls.OBC.CDL.Interfaces.RealInput TAirRet(
final unit="K",
displayUnit="degC",
final quantity="ThermodynamicTemperature")
if ecoHigLimCon == Buildings.Controls.OBC.ASHRAE.G36.Types.ControlEconomizer.DifferentialDryBulb
"Used only for fixed plus differential dry bulb temperature high limit cutoff";
Buildings.Controls.OBC.CDL.Interfaces.BooleanInput u1FreSta
if (freSta == Buildings.Controls.OBC.ASHRAE.G36.Types.FreezeStat.Connected_to_BAS_NO
or freSta == Buildings.Controls.OBC.ASHRAE.G36.Types.FreezeStat.Connected_to_BAS_NC)
"Freeze protection stat signal";
Buildings.Controls.OBC.CDL.Interfaces.BooleanInput u1SofSwiRes
if (freSta == Buildings.Controls.OBC.ASHRAE.G36.Types.FreezeStat.No_freeze_stat
or freSta == Buildings.Controls.OBC.ASHRAE.G36.Types.FreezeStat.Hardwired_to_equipment)
"Freeze protection reset signal from software switch";
Buildings.Controls.OBC.CDL.Interfaces.RealInput dpBui(
final unit="Pa",
displayUnit="Pa",
final quantity="PressureDifference")
if have_ahuRelFan and buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReliefFan
"Measured building static pressure difference, relative to ambient (positive if pressurized)";
Buildings.Controls.OBC.CDL.Interfaces.BooleanInput u1RelFan
if buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReliefFan
and not have_ahuRelFan
"Relief fan commanded on";
Buildings.Controls.OBC.CDL.Interfaces.RealInput uRelFan(
final min=0,
final max=1,
final unit="1") if buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReliefFan
and not have_ahuRelFan
"Relief fan commanded speed";
Buildings.Controls.OBC.CDL.Interfaces.RealInput TAirMix(
final unit="K",
displayUnit="degC",
final quantity="ThermodynamicTemperature")
if have_hotWatCoi
"Measured mixed air temperature, used for freeze protection";
Buildings.Controls.OBC.CDL.Interfaces.RealInput uOutDam(
final min=0,
final max=1,
final unit="1")
if buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReliefDamper
"Outdoor damper position";
Buildings.Controls.OBC.CDL.Interfaces.RealInput uSupFan_actual(
final min=0,
final max=1,
final unit="1")
"Actual supply fan speed";
Buildings.Controls.OBC.CDL.Interfaces.RealInput uCooCoi_actual(
final min=0,
final max=1,
final unit="1")
"Cooling coil valve actual position";
Buildings.Controls.OBC.CDL.Interfaces.RealInput uHeaCoi_actual(
final min=0,
final max=1,
final unit="1") if have_hotWatCoi "Heating coil valve actual position";
Buildings.Controls.OBC.CDL.Interfaces.RealOutput TSupHeaEcoSet(
final unit="K",
displayUnit="degC",
final quantity="ThermodynamicTemperature")
"Temperature setpoint for heating coil and for economizer";
Buildings.Controls.OBC.CDL.Interfaces.RealOutput TSupCooSet(
final unit="K",
displayUnit="degC",
final quantity="ThermodynamicTemperature")
"Cooling supply air temperature setpoint";
Buildings.Controls.OBC.CDL.Interfaces.RealOutput TZonHeaSet(
final unit="K",
displayUnit="degC",
final quantity = "ThermodynamicTemperature")
"Zone heating setpoint temperature";
Buildings.Controls.OBC.CDL.Interfaces.RealOutput TZonCooSet(
final unit="K",
displayUnit="degC",
final quantity = "ThermodynamicTemperature")
"Zone cooling setpoint temperature";
Buildings.Controls.OBC.CDL.Interfaces.BooleanOutput y1EneCHWPum
"Commanded on to energize chilled water pump";
Buildings.Controls.OBC.CDL.Interfaces.RealOutput yRetDam(
final min=0,
final max=1,
final unit="1")
"Return air damper commanded position";
Buildings.Controls.OBC.CDL.Interfaces.RealOutput yOutDam(
final min=0,
final max=1,
final unit="1")
"Outdoor air damper commanded position";
Buildings.Controls.OBC.CDL.Interfaces.BooleanOutput y1SupFan
"Supply fan commanded on";
Buildings.Controls.OBC.CDL.Interfaces.RealOutput ySupFan(
final min=0,
final max=1,
final unit="1")
"Supply fan commanded speed";
Buildings.Controls.OBC.CDL.Interfaces.BooleanOutput y1RetFan
if (buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReturnFanMeasuredAir
or buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReturnFanCalculatedAir
or buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReturnFanDp)
"Return fan commanded on";
Buildings.Controls.OBC.CDL.Interfaces.RealOutput yRetFan(
final min=0,
final max=1,
final unit="1")
if (buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReturnFanMeasuredAir
or buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReturnFanCalculatedAir
or buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReturnFanDp)
"Return fan commanded speed";
Buildings.Controls.OBC.CDL.Interfaces.BooleanOutput y1RelFan
if buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReliefFan
"Relief fan commanded on";
Buildings.Controls.OBC.CDL.Interfaces.RealOutput yRelFan(
final min=0,
final max=1,
final unit="1")
if buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReliefFan
"Relief fan commanded speed";
Buildings.Controls.OBC.CDL.Interfaces.RealOutput yCooCoi(
final min=0,
final max=1,
final unit="1") "Cooling coil valve commanded position";
Buildings.Controls.OBC.CDL.Interfaces.RealOutput yHeaCoi(
final min=0,
final max=1,
final unit="1")
if have_hotWatCoi "Heating coil valve commanded position";
Buildings.Controls.OBC.CDL.Interfaces.IntegerOutput yAla
"Alarm level";
Buildings.Controls.OBC.CDL.Interfaces.RealOutput yRelDam(
final min=0,
final max=1,
final unit="1") if buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReliefDamper
or (have_ahuRelFan and buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReliefFan)
"Relief damper commanded position";
Buildings.Controls.OBC.CDL.Interfaces.BooleanOutput y1ExhDam
if (buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReturnFanMeasuredAir
or buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReturnFanCalculatedAir
or buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReturnFanDp)
"Exhaust damper command on";
Buildings.Controls.OBC.CDL.Interfaces.IntegerOutput yChiWatResReq
"Chilled water reset request";
Buildings.Controls.OBC.CDL.Interfaces.IntegerOutput yChiPlaReq
"Chiller plant request";
Buildings.Controls.OBC.CDL.Interfaces.IntegerOutput yHotWatResReq
if have_hotWatCoi
"Hot water reset request";
Buildings.Controls.OBC.CDL.Interfaces.IntegerOutput yHotWatPlaReq
if have_hotWatCoi
"Hot water plant request";
Buildings.Controls.OBC.ASHRAE.G36.AHUs.SingleZone.VAV.SetPoints.Supply setPoiVAV(
final TSup_max=TSup_max,
final TSup_min=TSup_min,
final TSupDew_max=TSupDew_max,
final TSupDea_min=TSupDea_min,
final TSupDea_max=TSupDea_max,
final maxHeaSpe=maxHeaSpe,
final maxCooSpe=maxCooSpe,
final minSpe=minSpe,
final looHys=looHys,
final temPoiOne=temPoiOne,
final temPoiTwo=temPoiTwo,
final temPoiThr=temPoiThr,
final temPoiFou=temPoiFou,
final spePoiOne=spePoiOne,
final spePoiTwo=spePoiTwo,
final spePoiThr=spePoiThr,
final spePoiFou=spePoiFou)
"Supply air set point and fan signal for single zone VAV system";
Buildings.Controls.OBC.CDL.Continuous.PIDWithReset cooPI(
final controllerType=cooLooCon,
final k=kCoo,
final Ti=TiCoo,
final Td=TdCoo,
final reverseActing=false)
"Zone cooling control signal";
Buildings.Controls.OBC.CDL.Continuous.PIDWithReset heaPI(
final controllerType=heaLooCon,
final k=kHea,
final Ti=TiHea,
final Td=TdHea)
"Zone heating control signal";
Buildings.Controls.OBC.ASHRAE.G36.AHUs.SingleZone.VAV.Economizers.Controller conEco(
final eneStd=eneStd,
final ecoHigLimCon=ecoHigLimCon,
final ashCliZon=ashCliZon,
final tit24CliZon=tit24CliZon,
final have_heaCoi=have_hotWatCoi or have_eleHeaCoi,
final uMin=uMin,
final uMax=uMax,
final controllerTypeMod=ecoModCon,
final kMod=kMod,
final TiMod=TiMod,
final TdMod=TdMod,
final delTOutHys=delTOutHys,
final delEntHys=delEntHys,
final floHys=floHys,
final supFanSpe_min=supFanSpe_min,
final supFanSpe_max=supFanSpe_max,
final VOutMin_flow=VOutMin_flow,
final VOutDes_flow=VOutDes_flow,
final outDamMinFloMinSpe=outDamMinFloMinSpe,
final outDamMinFloMaxSpe=outDamMinFloMaxSpe,
final outDamDesFloMinSpe=outDamDesFloMinSpe,
final outDamDesFloMaxSpe=outDamDesFloMaxSpe,
final outDamPhy_max=outDamPhy_max,
final outDamPhy_min=outDamPhy_min,
final retDamPhy_max=retDamPhy_max,
final retDamPhy_min=retDamPhy_min) "Economizer control sequence";
Buildings.Controls.OBC.ASHRAE.G36.VentilationZones.ASHRAE62_1.Setpoints
outAirSetPoi(
final have_winSen=have_winSen,
final have_occSen=have_occSen,
final have_CO2Sen=have_CO2Sen,
final have_SZVAV=true,
final permit_occStandby=permit_occStandby,
final VAreBreZon_flow=VAreBreZon_flow,
final VPopBreZon_flow=VPopBreZon_flow,
final VMin_flow=0,
final zonDisEff_cool=zonDisEff_cool,
final zonDisEff_heat=zonDisEff_heat,
final dTHys=Thys) if venStd == Buildings.Controls.OBC.ASHRAE.G36.Types.VentilationStandard.ASHRAE62_1_2016
"Output the minimum outdoor airflow rate setpoint, when using ASHRAE 62.1";
Buildings.Controls.OBC.ASHRAE.G36.ThermalZones.ZoneStates zonSta "Zone state";
Buildings.Controls.OBC.CDL.Integers.Sources.Constant conInt(
final k=Buildings.Controls.OBC.ASHRAE.G36.Types.OperationModes.unoccupied)
"Unoccupied mode";
Buildings.Controls.OBC.CDL.Integers.Equal intEqu
"Check if current operation mode is unoccupied mode";
Buildings.Controls.OBC.CDL.Logical.Not switch "If in unoccupied mode, switch off";
Buildings.Controls.OBC.ASHRAE.G36.AHUs.SingleZone.VAV.SetPoints.ModeAndSetPoints
modSetPoi(
final have_winSen=have_winSen,
final have_occSen=have_occSen,
final have_locAdj=have_locAdj,
final sepAdj=sepAdj,
final ignDemLim=ignDemLim,
final TActCoo_max=TActCoo_max,
final TActCoo_min=TActCoo_min,
final TActHea_max=TActHea_max,
final TActHea_min=TActHea_min,
final TWinOpeCooSet=TWinOpeCooSet,
final TWinOpeHeaSet=TWinOpeHeaSet,
final incTSetDem_1=incTSetDem_1,
final incTSetDem_2=incTSetDem_2,
final incTSetDem_3=incTSetDem_3,
final decTSetDem_1=decTSetDem_1,
final decTSetDem_2=decTSetDem_2,
final decTSetDem_3=decTSetDem_3,
final bouLim=bouLim,
final uLow=uLow,
final uHigh=uHigh,
final preWarCooTim=preWarCooTim,
final TZonFreProOn=TZonFreProOn,
final TZonFreProOff=TZonFreProOff)
"Output zone setpoint with operation mode selection";
Buildings.Controls.OBC.ASHRAE.G36.AHUs.SingleZone.VAV.SetPoints.CoolingCoil cooCoi(
final controllerTypeCooCoi=cooCoiCon,
final kCooCoi=kCooCoi,
final TiCooCoi=TiCooCoi,
final TdCooCoi=TdCooCoi) "Controller for cooling coil valve";
Buildings.Controls.OBC.ASHRAE.G36.AHUs.SingleZone.VAV.SetPoints.FreezeProtection
frePro(
final buiPreCon=buiPreCon,
final freSta=freSta,
final have_hotWatCoi=have_hotWatCoi,
final minHotWatReq=minHotWatReq,
final heaCoiCon=freHeaCoiCon,
final k=kFreHea,
final Ti=TiFreHea,
final Td=TdFreHea,
final yMax=yMaxFreHea,
final yMin=yMinFreHea,
final Thys=Thys) "Freeze protection";
Buildings.Controls.OBC.ASHRAE.G36.AHUs.SingleZone.VAV.SetPoints.PlantRequests
plaReq(
final have_hotWatCoi=have_hotWatCoi,
final Thys=Thys,
final posHys=posHys) "Plant request";
Buildings.Controls.OBC.ASHRAE.G36.AHUs.SingleZone.VAV.SetPoints.ReliefDamper relDam(
final relDam_min=relDam_min,
final relDam_max=relDam_max,
final posHys=posHys) if buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReliefDamper
"Relief damper control";
Buildings.Controls.OBC.ASHRAE.G36.AHUs.SingleZone.VAV.SetPoints.ReturnFan retFan(
final speDif=speDif) if (buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReturnFanMeasuredAir
or buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReturnFanCalculatedAir
or buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReturnFanDp)
"Return fan control";
Buildings.Controls.OBC.CDL.Integers.Switch intSwi
if have_hotWatCoi
"Hot water plant request";
Buildings.Controls.OBC.CDL.Integers.GreaterThreshold freProMod
if have_hotWatCoi
"Check if it is in freeze protection mode";
Buildings.Controls.OBC.ASHRAE.G36.VentilationZones.Title24.Setpoints minFlo(
final have_winSen=have_winSen,
final have_occSen=have_occSen,
final have_CO2Sen=have_CO2Sen,
final have_SZVAV=true,
final VOccMin_flow=VOccMin_flow,
final VAreMin_flow=VAreMin_flow,
final VMin_flow=VZonMin_flow) if venStd == Buildings.Controls.OBC.ASHRAE.G36.Types.VentilationStandard.California_Title_24_2016
"Output the minimum outdoor airflow rate setpoint, when using Title 24";
Buildings.Controls.OBC.CDL.Logical.Sources.Constant noEneStd(
final k=eneStd == Buildings.Controls.OBC.ASHRAE.G36.Types.EnergyStandard.Not_Specified)
"No energy standard";
Buildings.Controls.OBC.CDL.Logical.Not not3
"Logical not";
Buildings.Controls.OBC.CDL.Utilities.Assert assMes(
final message="Warning: Energy standard is not specified!")
"Warning when the energy standard is not specified";
Buildings.Controls.OBC.CDL.Logical.Sources.Constant noVenStd(
final k=venStd ==Buildings.Controls.OBC.ASHRAE.G36.Types.VentilationStandard.Not_Specified)
"No ventilation standard";
Buildings.Controls.OBC.CDL.Logical.Not not1
"Logical not";
Buildings.Controls.OBC.CDL.Utilities.Assert assMes1(
final message="Warning: Ventilation standard is not specified!")
"Warning when the ventilation standard is not specified";
Buildings.Controls.OBC.CDL.Logical.Sources.Constant noAshCli(
final k=ashCliZon == Buildings.Controls.OBC.ASHRAE.G36.Types.ASHRAEClimateZone.Not_Specified)
"No ASHRAE climate zone";
Buildings.Controls.OBC.CDL.Logical.Sources.Constant noTit24Cli(
final k=tit24CliZon == Buildings.Controls.OBC.ASHRAE.G36.Types.Title24ClimateZone.Not_Specified)
"No Title 24 climate zone";
Buildings.Controls.OBC.CDL.Logical.And noCli
"Climate zone is not specified";
Buildings.Controls.OBC.CDL.Logical.Not not2
"Logical not";
Buildings.Controls.OBC.CDL.Utilities.Assert assMes2(
final message="Warning: Climate zone is not specified!")
"Warning when the climate zone is not specified";
Buildings.Controls.OBC.CDL.Continuous.Sources.Constant zerFlo(final k=0)
if venStd == Buildings.Controls.OBC.ASHRAE.G36.Types.VentilationStandard.Not_Specified
"Zero flow when the ventilation standard is not specified";
Buildings.Controls.OBC.ASHRAE.G36.AHUs.SingleZone.VAV.SetPoints.ReliefFan relFanCon(
final relFanSpe_min=relFanSpe_min,
final dpBuiSet=dpBuiSet,
final k=kRelFan)
if have_ahuRelFan and buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReliefFan
"Control of relief fan when it is part of AHU";
equation
connect(modSetPoi.tNexOcc, tNexOcc);
connect(conEco.TAirSup, TAirSup);
connect(setPoiVAV.TSupHeaEcoSet, conEco.TSupHeaEcoSet);
connect(setPoiVAV.TSupHeaEcoSet, TSupHeaEcoSet);
connect(setPoiVAV.TSupCooSet, TSupCooSet);
connect(outAirSetPoi.TDis, TAirSup);
connect(TOut, setPoiVAV.TOut);
connect(conEco.TOut, setPoiVAV.TOut);
connect(zonSta.yZonSta, conEco.uZonSta);
connect(conInt.y, intEqu.u2);
connect(intEqu.y, switch.u);
connect(modSetPoi.THeaSet, heaPI.u_s);
connect(modSetPoi.TCooSet, cooPI.u_s);
connect(outAirSetPoi.u1Win, u1Win);
connect(modSetPoi.u1Occ, u1Occ);
connect(TZon, modSetPoi.TZon);
connect(TZon, cooPI.u_m);
connect(conEco.hOut, hOut);
connect(conEco.TAirRet, TAirRet);
connect(switch.y, cooCoi.u1SupFan);
connect(zonSta.yZonSta, cooCoi.uZonSta);
connect(cooCoi.TAirSup, TAirSup);
connect(switch.y, conEco.u1SupFan);
connect(heaPI.y, setPoiVAV.uHea);
connect(heaPI.y, zonSta.uHea);
connect(cooPI.y, setPoiVAV.uCoo);
connect(cooPI.y, zonSta.uCoo);
connect(switch.y, heaPI.trigger);
connect(switch.y, cooPI.trigger);
connect(modSetPoi.TCooSet, TZonCooSet);
connect(TZon, heaPI.u_m);
connect(intEqu.u1, modSetPoi.yOpeMod);
connect(setPoiVAV.TSupCooSet, cooCoi.TSupCooSet);
connect(TZon, setPoiVAV.TZon);
connect(TZon, outAirSetPoi.TZon);
connect(warUpTim, modSetPoi.warUpTim);
connect(u1Win, modSetPoi.u1Win);
connect(u1OccSen, modSetPoi.u1OccSen);
connect(modSetPoi.TCooSet, setPoiVAV.TCooSet);
connect(modSetPoi.THeaSet, setPoiVAV.THeaSet);
connect(heaSetAdj, modSetPoi.heaSetAdj);
connect(setAdj, modSetPoi.setAdj);
connect(u1OccSen, outAirSetPoi.u1Occ);
connect(outAirSetPoi.ppmCO2, ppmCO2);
connect(outAirSetPoi.VMinOA_flow, conEco.VOutMinSet_flow);
connect(conEco.yOutDam_min, frePro.uOutDamPosMin);
connect(conEco.yOutDam, frePro.uOutDam);
connect(conEco.yHeaCoi, frePro.uHeaCoi);
connect(conEco.yRetDam, frePro.uRetDam);
connect(TAirSup, frePro.TAirSup);
connect(frePro.u1SofSwiRes, u1SofSwiRes);
connect(frePro.u1FreSta, u1FreSta);
connect(setPoiVAV.y, frePro.uSupFan);
connect(uRelFan, frePro.uRelFan);
connect(cooCoi.yCooCoi, frePro.uCooCoi);
connect(TAirMix, frePro.TAirMix);
connect(frePro.y1EneCHWPum, y1EneCHWPum);
connect(frePro.yRetDam, yRetDam);
connect(frePro.yOutDam, yOutDam);
connect(frePro.ySupFan, ySupFan);
connect(switch.y, relDam.u1SupFan);
connect(switch.y, retFan.u1SupFan);
connect(relDam.yRelDam, yRelDam);
connect(retFan.y1ExhDam, y1ExhDam);
connect(retFan.uSupFan_actual, uSupFan_actual);
connect(frePro.yRetFan, yRetFan);
connect(frePro.yRelFan, yRelFan);
connect(frePro.yCooCoi, yCooCoi);
connect(frePro.yHeaCoi, yHeaCoi);
connect(retFan.yRetFan, frePro.uRetFan);
connect(frePro.yFreProSta, conEco.uFreProSta);
connect(TAirSup, plaReq.TAirSup);
connect(setPoiVAV.TSupCooSet, plaReq.TSupCoo);
connect(plaReq.uCooCoi_actual, uCooCoi_actual);
connect(setPoiVAV.TSupHeaEcoSet, plaReq.TSupHeaEco);
connect(plaReq.uHeaCoi_actual, uHeaCoi_actual);
connect(plaReq.yChiWatResReq, yChiWatResReq);
connect(plaReq.yChiPlaReq, yChiPlaReq);
connect(plaReq.yHotWatResReq, yHotWatResReq);
connect(freProMod.y, intSwi.u2);
connect(plaReq.yHotWatPlaReq, intSwi.u3);
connect(frePro.yFreProSta, freProMod.u);
connect(frePro.yHotWatPlaReq, intSwi.u1);
connect(frePro.yAla, yAla);
connect(intSwi.y, yHotWatPlaReq);
connect(uOutDam, relDam.uOutDam);
connect(conEco.yOutDam_min, relDam.uOutDam_min);
connect(cooSetAdj, modSetPoi.cooSetAdj);
connect(ppmCO2Set, outAirSetPoi.ppmCO2Set);
connect(hAirRet, conEco.hAirRet);
connect(u1Win, minFlo.u1Win);
connect(u1OccSen, minFlo.u1Occ);
connect(ppmCO2Set, minFlo.ppmCO2Set);
connect(ppmCO2, minFlo.ppmCO2);
connect(cooDowTim, modSetPoi.cooDowTim);
connect(uCooDemLimLev, modSetPoi.uCooDemLimLev);
connect(uHeaDemLimLev, modSetPoi.uHeaDemLimLev);
connect(modSetPoi.yOpeMod, setPoiVAV.uOpeMod);
connect(modSetPoi.yOpeMod, outAirSetPoi.uOpeMod);
connect(modSetPoi.yOpeMod, minFlo.uOpeMod);
connect(modSetPoi.yOpeMod, conEco.uOpeMod);
connect(modSetPoi.THeaSet, TZonHeaSet);
connect(TOccHeaSet,modSetPoi.TOccHeaSet);
connect(TOccCooSet,modSetPoi.TOccCooSet);
connect(TUnoHeaSet,modSetPoi.TUnoHeaSet);
connect(TUnoCooSet,modSetPoi.TUnoCooSet);
connect(minFlo.VMinOA_flow, conEco.VOutMinSet_flow);
connect(uSupFan_actual, conEco.uSupFan_actual);
connect(switch.y, frePro.u1SupFan);
connect(retFan.y1RetFan, frePro.u1RetFan);
connect(u1RelFan, frePro.u1RelFan);
connect(frePro.y1RetFan, y1RetFan);
connect(frePro.y1RelFan, y1RelFan);
connect(frePro.y1SupFan, y1SupFan);
connect(noEneStd.y,not3. u);
connect(not3.y,assMes. u);
connect(noVenStd.y,not1. u);
connect(not1.y,assMes1. u);
connect(noAshCli.y,noCli. u1);
connect(noTit24Cli.y,noCli. u2);
connect(noCli.y,not2. u);
connect(not2.y,assMes2. u);
connect(zerFlo.y, conEco.VOutMinSet_flow);
connect(relFanCon.y1RelFan, frePro.u1RelFan);
connect(relFanCon.yRelFan, frePro.uRelFan);
connect(switch.y, relFanCon.u1SupFan);
connect(dpBui, relFanCon.dpBui);
connect(relFanCon.yDam, yRelDam);
end Controller;