Type | Intent | Optional | Attributes | Name | ||
---|---|---|---|---|---|---|
real(kind=r64), | intent(in) | :: | DeltaTemp |
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FUNCTION CalcKaradagChilledCeiling(DeltaTemp) RESULT (Hn)
! FUNCTION INFORMATION:
! AUTHOR Brent Griffith
! DATE WRITTEN Jul 2010
! MODIFIED na
! RE-ENGINEERED na
! PURPOSE OF THIS FUNCTION:
! Calculate model equation for natural convection developed by Karadag for chilled ceilings
! METHODOLOGY EMPLOYED:
! isolate function for equation.
! REFERENCES:
! Karadag, R. 2009. New approach relevant to total heat transfer coefficient
! including the effect of radiation and convection at the ceiling in a cooled
! ceiling room. Applied Thermal Engineering 29 (2009) 1561-1565
! This function is for equation 8 in the reference
! USE STATEMENTS:
! na
IMPLICIT NONE ! Enforce explicit typing of all variables in this routine
! FUNCTION ARGUMENT DEFINITIONS:
REAL(r64), INTENT(IN) :: DeltaTemp ! [C] temperature difference between surface and air
REAL(r64) :: Hn ! function result, natural convection coefficient
! FUNCTION PARAMETER DEFINITIONS:
! INTERFACE BLOCK SPECIFICATIONS:
! na
! DERIVED TYPE DEFINITIONS:
! na
! FUNCTION LOCAL VARIABLE DECLARATIONS:
Hn = 3.1d0* (ABS(DeltaTemp))**0.22d0
RETURN
END FUNCTION CalcKaradagChilledCeiling