The present study examines the influence of heated, horizontal, and rotatable louvers on the convective and radiative heat transfer from a heated or cooled vertical isothermal surface. The system represents an irradiated Venetian blind adjacent to the indoor surface of a window. Detailed heat transfer results were obtained using a steady, laminar, two-dimensional, conjugate conduction/convection/radiation finite element model for two window temperatures (warm and cool compared to ambient) and irradiation levels, two louver to surface spacings, and three louver angles. The effect of the heated louvers on the heat transfer rate from the surface has been demonstrated.

Issue Section:
Natural and Mixed Convection
Keywords:
convection, radiative transfer, finite element analysis, Computational, Finite Element, Heat Transfer, Mixed Mode, Modeling
Topics:
Convection, Heat flux, Heat transfer, Radiative heat transfer, Temperature, Finite element analysis, Radiation (Physics), Numerical analysis, Heat conduction, Irradiation (Radiation exposure)
1.
Machin
,
A. D.
,
Naylor
,
D.
,
Oosthuizen
,
P. H.
, and
Harrison
,
S. J.
,
1998
, “
Experimental Study of Free Convection at an Indoor Glazing Surface with a Venetian Blind
,”
Journal of HVAC&R Research
,
4
(
2
), pp.
153
–
166
.
2.
Ye
,
P.
,
Harrison
,
S. J.
,
Oosthuizen
,
P. H.
, and
Naylor
,
D.
,
1999
, “
Convective Heat Transfer from a Window with Venetian Blind: Detailed Modeling
,”
ASHRAE J.
,
105
(
2
), pp.
1031
–
1037
.
3.
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Copyright © 2002
 by ASME
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