Nodes of different colours represent the following:
Solid arrows point from a parent (sub)module to the submodule which is descended from it. Dashed arrows point from a module being used to the module or program unit using it. Where possible, edges connecting nodes are given different colours to make them easier to distinguish in large graphs.
Type | Intent | Optional | Attributes | Name | ||
---|---|---|---|---|---|---|
real(kind=r64), | intent(in) | :: | HWFlow | |||
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 HotWaterCoilResidual(HWFlow, Par) RESULT (Residuum)
! FUNCTION INFORMATION:
! AUTHOR Bereket Nigusse, FSEC/UCF
! DATE WRITTEN January 2012
! MODIFIED
! RE-ENGINEERED
! PURPOSE OF THIS FUNCTION:
! Calculates residual function (Actual Coil Output - Requested Coil Load) / Requested Coil Load
! the actual coil output depends on the hot water flow rate which is varied to minimize the residual.
! METHODOLOGY EMPLOYED:
! Calls HotWaterCoilResidual, and calculates the residual as defined above.
!
! REFERENCES:
! USE STATEMENTS:
USE WaterCoils, ONLY: SimulateWaterCoilComponents
USE PlantUtilities, ONLY: SetComponentFlowRate
IMPLICIT NONE ! Enforce explicit typing of all variables in this routine
! SUBROUTINE ARGUMENT DEFINITIONS:
REAL(r64), INTENT(IN) :: HWFlow ! hot water flow rate in kg/s
REAL(r64), INTENT(IN), DIMENSION(:), OPTIONAL :: Par ! Par(5) is the requested coil load
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 :: CBVAVNum
LOGICAL :: FirstHVACSoln
REAL(r64) :: QCoilActual ! delivered coild load, W
REAL(r64) :: HeatCoilLoad ! requested coild load, W
REAL(r64) :: mdot
CBVAVNum = INT(Par(1))
IF (Par(2) > 0.0d0) THEN
FirstHVACSoln = .TRUE.
ELSE
FirstHVACSoln = .FALSE.
END IF
HeatCoilLoad = Par(3)
QCoilActual = HeatCoilLoad
mdot = HWFlow
Call SetComponentFlowRate( mdot , &
CBVAV(CBVAVNum)%CoilControlNode, &
CBVAV(CBVAVNum)%CoilOutletNode, &
CBVAV(CBVAVNum)%LoopNum, &
CBVAV(CBVAVNum)%LoopSide, &
CBVAV(CBVAVNum)%BranchNum, &
CBVAV(CBVAVNum)%CompNum)
! simulate the hot water supplemental heating coil
CALL SimulateWaterCoilComponents(CBVAV(CBVAVNum)%HeatCoilName,FirstHVACSoln, &
CBVAV(CBVAVNum)%HeatCoilIndex, QCoilActual, &
CBVAV(CBVAVNum)%OpMode)
IF (HeatCoilLoad /= 0.0d0) THEN
Residuum = (QCoilActual - HeatCoilLoad)/ HeatCoilLoad
ELSE !Objexx:Return Condition added to assure return value is set
Residuum = 0.0d0
ENDIF
RETURN
END FUNCTION HotWaterCoilResidual