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| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| integer, | intent(in) | :: | DSOAPtr | |||
| integer, | intent(in) | :: | ActualZoneNum | |||
| logical, | intent(in) | :: | UseOccSchFlag | |||
| logical, | intent(in) | :: | UseMinOASchFlag | |||
| logical, | intent(in), | optional | :: | PerPersonNotSet | ||
| logical, | intent(in), | optional | :: | MaxOAVolFlowFlag |
Nodes of different colours represent the following:
Solid arrows point from a procedure to one which it calls. Dashed arrows point from an interface to procedures which implement that interface. This could include the module procedures in a generic interface or the implementation in a submodule of an interface in a parent module. Where possible, edges connecting nodes are given different colours to make them easier to distinguish in large graphs.
Nodes of different colours represent the following:
Solid arrows point from a procedure to one which it calls. Dashed arrows point from an interface to procedures which implement that interface. This could include the module procedures in a generic interface or the implementation in a submodule of an interface in a parent module. Where possible, edges connecting nodes are given different colours to make them easier to distinguish in large graphs.
FUNCTION CalcDesignSpecificationOutdoorAir(DSOAPtr, ActualZoneNum, UseOccSchFlag, UseMinOASchFlag, PerPersonNotSet, &
MaxOAVolFlowFlag) RESULT (OAVolumeFlowRate)
! FUNCTION INFORMATION:
! AUTHOR Richard Raustad, FSEC
! DATE WRITTEN October 2012
! MODIFIED na
! RE-ENGINEERED na
! PURPOSE OF THIS FUNCTION:
! This function returns the air volume flow rate based on DesignSpecification:OutdoorAir object.
! METHODOLOGY EMPLOYED:
! User inputs and zone index allows calculation of outdoor air quantity.
! Sizing does not use occupancy or min OA schedule and will call with flags set to FALSE
! Ventilation Rate Procedure uses occupancy schedule based on user input.
! REFERENCES:
! na
! USE STATEMENTS:
USE DataSizing, ONLY: OARequirements ! to access DesignSpecification:OutdoorAir inputs
USE DataSizing, ONLY: OAFlowNone, OAFlowPPer, OAFlow, OAFlowPerArea, OAFlowACH, OAFlowSum, OAFlowMax
USE ScheduleManager, ONLY: GetCurrentScheduleValue, GetScheduleMaxValue
USE DataHeatBalance, ONLY: Zone, ZoneIntGain, People, TotPeople
IMPLICIT NONE ! Enforce explicit typing of all variables in this routine
! FUNCTION ARGUMENT DEFINITIONS:
INTEGER, INTENT(IN) :: DSOAPtr ! Pointer to DesignSpecification:OutdoorAir object
INTEGER, INTENT(IN) :: ActualZoneNum ! Zone index
LOGICAL, INTENT(IN) :: UseOccSchFlag ! Zone occupancy schedule will be used instead of using total zone occupancy
LOGICAL, INTENT(IN) :: UseMinOASchFlag ! Use min OA schedule in DesignSpecification:OutdoorAir object
LOGICAL, INTENT(IN), OPTIONAL :: PerPersonNotSet ! when calculation should not include occupants (e.g., dual duct)
LOGICAL, INTENT(IN), OPTIONAL :: MaxOAVolFlowFlag ! TRUE when calculation uses occupancy schedule (e.g., dual duct)
REAL(r64) :: OAVolumeFlowRate ! Return value for calculated outdoor air volume flow rate [m3/s]
! FUNCTION PARAMETER DEFINITIONS:
! na
! INTERFACE BLOCK SPECIFICATIONS:
! na
! DERIVED TYPE DEFINITIONS:
! na
! FUNCTION LOCAL VARIABLE DECLARATIONS:
REAL(r64) :: DSOAFlowPeople ! Outdoor air volume flow rate based on occupancy (m3/s)
REAL(r64) :: DSOAFlowPerZone ! Outdoor air volume flow rate (m3/s)
REAL(r64) :: DSOAFLowPerArea ! Outdoor air volume flow rate based on zone floor area (m3/s)
REAL(r64) :: DSOAFlowACH ! Outdoor air volume flow rate based on air changes per hour (m3/s)
REAL(r64) :: PeopleCount ! total count of people in people objects
INTEGER :: Loop ! index counter in LOOP
LOGICAL :: PerPersonModeNotSet
LOGICAL :: MaxOAFlag
OAVolumeFlowRate = 0.d0
IF(DSOAPtr .EQ. 0)RETURN
IF(PRESENT(PerPersonNotSet))THEN
PerPersonModeNotSet = PerPersonNotSet
ELSE
PerPersonModeNotSet = .FALSE.
END IF
IF(PRESENT(MaxOAVolFlowFlag))THEN
MaxOAFlag = MaxOAVolFlowFlag
ELSE
MaxOAFlag = .FALSE.
END IF
! Calculate people outdoor air flow rate as needed
SELECT CASE(OARequirements(DSOAPtr)%OAFlowMethod)
CASE(OAFlowPPer, OAFlowSum, OAFlowMax)
IF(UseOccSchFlag)THEN
IF(MaxOAFlag)THEN
! OAPerPersonMode == PerPersonDCVByCurrentLevel (UseOccSchFlag = TRUE)
! for dual duct, get max people according to max schedule value when requesting MaxOAFlow
PeopleCount = 0.d0
DO Loop = 1, TotPeople
IF (ActualZoneNum /= People(Loop)%ZonePtr) CYCLE
PeopleCount = PeopleCount + People(Loop)%NumberOfPeople &
* GetScheduleMaxValue(People(Loop)%NumberOfPeoplePtr )
ENDDO
DSOAFlowPeople = PeopleCount * OARequirements(DSOAPtr)%OAFlowPerPerson
ELSE
DSOAFlowPeople = ZoneIntGain(ActualZoneNum)%NOFOCC * OARequirements(DSOAPtr)%OAFlowPerPerson
END IF
ELSE
IF(MaxOAFlag)THEN
! OAPerPersonMode == PerPersonByDesignLevel (UseOccSchFlag = FALSE)
! use total people when requesting MaxOAFlow
DSOAFlowPeople = Zone(ActualZoneNum)%TotOccupants * OARequirements(DSOAPtr)%OAFlowPerPerson
ELSE
DSOAFlowPeople = Zone(ActualZoneNum)%TotOccupants * OARequirements(DSOAPtr)%OAFlowPerPerson
END IF
END IF
IF(PerPersonModeNotSet)DSOAFlowPeople = 0.d0 ! for Dual Duct if Per Person Ventilation Rate Mode is not entered
CASE DEFAULT
DSOAFlowPeople = 0.d0
END SELECT
! Calculate minimum outdoor air flow rate
SELECT CASE(OARequirements(DSOAPtr)%OAFlowMethod)
CASE(OAFlowNone)
! Special case for no DesignSpecification:OutdoorAir object in Sizing:Zone object
! probably won't get to this CASE statement since it will RETURN above (Ptr=0)
! See SizingManager GetZoneSizingInput for Sizing:Zone input field Design Specification Outdoor Air Object Name
OAVolumeFlowRate = 0.d0
CASE(OAFlowPPer)
! Multiplied by occupancy
OAVolumeFlowRate = DSOAFlowPeople
CASE(OAFlow)
! User input
OAVolumeFlowRate = OARequirements(DSOAPtr)%OAFlowPerZone
CASE(OAFlowPerArea)
! Multiplied by zone floor area
OAVolumeFlowRate = OARequirements(DSOAPtr)%OAFlowPerArea * Zone(ActualZoneNum)%FloorArea
CASE(OAFlowACH)
! Multiplied by zone volume
OAVolumeFlowRate = OARequirements(DSOAPtr)%OAFlowACH * Zone(ActualZoneNum)%Volume / 3600.d0
CASE(OAFlowSum, OAFlowMax)
! Use sum or max of per person and the following
DSOAFlowPerZone = OARequirements(DSOAPtr)%OAFlowPerZone
DSOAFLowPerArea = OARequirements(DSOAPtr)%OAFlowPerArea * Zone(ActualZoneNum)%FloorArea
DSOAFlowACH = OARequirements(DSOAPtr)%OAFlowACH * Zone(ActualZoneNum)%Volume / 3600.d0
IF(OARequirements(DSOAPtr)%OAFlowMethod == OAFlowMax)THEN
OAVolumeFlowRate = MAX(DSOAFlowPeople, DSOAFlowPerZone, DSOAFlowPerArea, DSOAFlowACH)
ELSE
OAVolumeFlowRate = DSOAFlowPeople + DSOAFlowPerZone + DSOAFlowPerArea + DSOAFlowACH
END IF
CASE DEFAULT
! Will never get here
OAVolumeFlowRate = 0.d0
END SELECT
! Apply zone multipliers and zone list multipliers
OAVolumeFlowRate = OAVolumeFlowRate * Zone(ActualZoneNum)%Multiplier * Zone(ActualZoneNum)%ListMultiplier
! Apply schedule as needed. Sizing does not use schedule.
IF(OARequirements(DSOAPtr)%OAFlowFracSchPtr .GT. 0 .AND. UseMinOASchFlag)THEN
IF(MaxOAFlag)THEN
OAVolumeFlowRate = OAVolumeFlowRate * GetScheduleMaxValue(OARequirements(DSOAPtr)%OAFlowFracSchPtr)
ELSE
OAVolumeFlowRate = OAVolumeFlowRate * GetCurrentScheduleValue(OARequirements(DSOAPtr)%OAFlowFracSchPtr)
END IF
END IF
END FUNCTION CalcDesignSpecificationOutdoorAir