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| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| real(kind=r64), | intent(in) | :: | PartLoadRatio | |||
| real(kind=r64), | intent(in), | optional | DIMENSION(:) | :: | Par |
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 HXAssistedCoolCoilTempResidual(PartLoadRatio, Par) RESULT (Residuum)
! FUNCTION INFORMATION:
! AUTHOR Richard Raustad, FSEC
! DATE WRITTEN November 2003
! MODIFIED
! RE-ENGINEERED
! PURPOSE OF THIS FUNCTION:
! Calculates residual function (desired outlet temp - actual outlet temp)
! DX Coil output depends on the part load ratio which is being varied to zero the residual.
! METHODOLOGY EMPLOYED:
! Calls CalcHXAssistedCoolingCoil to get outlet temperature at the given part load ratio
! and calculates the residual as defined above
! REFERENCES:
! USE STATEMENTS:
USE HVACHXAssistedCoolingCoil, ONLY: HXAssistedCoilOutletTemp, CalcHXAssistedCoolingCoil
IMPLICIT NONE ! Enforce explicit typing of all variables in this routine
! SUBROUTINE ARGUMENT DEFINITIONS:
REAL(r64), INTENT(IN) :: PartLoadRatio ! compressor cycling ratio (1.0 is continuous, 0.0 is off)
REAL(r64), INTENT(IN), DIMENSION(:), OPTIONAL :: Par ! par(1) = DX coil number
! par(2) = desired air outlet temperature [C]
! par(3) = FirstHVACIteration logical converted to numeric (1=TRUE,0=FALSE)
! par(4) = HX control (On/Off)
! par(5) = supply air fan operating mode (ContFanCycCoil)
REAL(r64) :: Residuum ! residual to be minimized to zero
! FUNCTION PARAMETER DEFINITIONS:
! na
! INTERFACE BLOCK SPECIFICATIONS
! na
! DERIVED TYPE DEFINITIONS
! na
! FUNCTION LOCAL VARIABLE DECLARATIONS:
INTEGER :: CoilIndex ! index of this coil
REAL(r64) :: OutletAirTemp ! outlet air temperature [C]
LOGICAL :: FirstHVACIteration ! FirstHVACIteration flag
LOGICAL :: HXUnitOn ! flag to enable heat exchanger heat recovery
INTEGER :: FanOpMode ! Supply air fan operating mode
INTEGER :: UnitarySysNum ! index to unitary system
CoilIndex = INT(Par(1))
! FirstHVACIteration is a logical, Par is REAL(r64), so make 1=TRUE and 0=FALSE
IF(Par(3) .EQ. 1.0d0)THEN
FirstHVACIteration = .TRUE.
ELSE
FirstHVACIteration = .FALSE.
END IF
IF(Par(4) .EQ. 1.0d0)THEN
HXUnitOn = .TRUE.
ELSE
HXUnitOn = .FALSE.
END IF
FanOpMode = INT(Par(5))
UnitarySysNum = INT(Par(6))
IF(UnitarySystem(UnitarySysNum)%CoolCoilFluidInletNode .GT. 0)THEN
Node(UnitarySystem(UnitarySysNum)%CoolCoilFluidInletNode)%MassFlowRate = &
UnitarySystem(UnitarySysNum)%MaxCoolCoilFluidFlow * PartLoadRatio
END IF
CALL CalcHXAssistedCoolingCoil(CoilIndex,FirstHVACIteration,On,PartLoadRatio, HXUnitOn, FanOpMode)
OutletAirTemp = HXAssistedCoilOutletTemp(CoilIndex)
Residuum = Par(2) - OutletAirTemp
RETURN
END FUNCTION HXAssistedCoolCoilTempResidual