Natural convection heat transfer was investigated in a scaled test facility of a Trombe wall geometry. A silicone oil was employed as the convecting medium to obtain large Rayleigh numbers (up to 1.5 × 1010, based on enclosure height) characteristic of full-scale Trombe wall in a passive solar building. The main objectives were to study effects of Trombe wall nonisothermality and location on heat transfer, fluid temperature and fluid flow patterns. As expected, Nusselt numbers were slightly larger on the Trombe wall space side than on the living space side. Nusselt numbers increased slightly as the mass transfer gaps in the Trombe wall were increased. The results were verified, for the zero gap case, by comparing with previous studies. Physical understanding of the convection process was enhanced by flow visualization data. The information obtained should be useful to designers in optimizing overall building performance for passive solar heating.

Issue Section:
Research Papers
Topics:
Geometry, Natural convection, Heat transfer, Convection, Flow visualization, Fluid dynamics, Fluids, Mass transfer, Rayleigh number, Silicones, Solar buildings, Solar heating, Temperature, Test facilities
1.
Akbari
A.
, and
Borgers
T. R.
,
1979
, “
Free Convective Laminar Flow Within the Trombe Wall Channel
,”
Solar Energy
, Vol.
22
, pp.
165
–
174
.
2.
Akbarzadeh
A.
,
Charters
W. W. S.
, and
Lesslie
D. A.
,
1982
, “
Thermocirculation Characteristics of a Trombe Wall Passive Test Cell
,”
Solar Energy
, Vol.
28
, pp.
461
–
468
.
3.
Anderson
R.
, and
Bejan
A.
,
1980
, “
Natural Convection on Both Sides of a Vertical Wall Separating Fluids at Different Temperatures
,”
ASME Journal of Heat Transfer
, Vol.
102
, pp.
630
–
635
.
4.
Anderson
R.
, and
Bejan
A.
,
1981
, “
Heat Transfer Through Single and Double Vertical Walls in Natural Convection: Theory and Experiment
,”
International Journal of Heat and Mass Transfer
, Vol.
24
, No.
10
, pp.
1611
–
1620
.
5.
Bajorek
S. M.
, and
Lloyd
J. R.
,
1982
, “
Experimental Investigation of Natural Convection in Partitioned Enclosures
,”
ASME Journal of Heat Transfer
, Vol.
104
, pp.
527
–
532
.
6.
Balcomb, J. D., McFarland, R. D., and Moore, S. W., 1978, “Passive Testing at Los Alamos,” Proceedings of the Second National Passive Solar Conference, Vol. 2, pp. 602–609.
7.
Barra
O. A.
, and
Carratelli
E. P.
,
1979
, “
A Theoretical Study of Laminar Free Convection in 1-D Solar Induced Flows
,”
Solar Energy
, Vol.
23
, pp.
211
–
215
.
8.
Berkovsky, B. M., and Polevikov, V. K., 1977, “Numerical Study of Problems on High-Intensive Free Convection,” Heat Transfer and Turbulent Buoyant Convection, D. B. Spaulding, and H. Afgan, eds., Hemisphere Publishing Corp., Washington, DC, Vol. 2, pp. 443–445.
9.
Boardman
C. R.
,
Kirkpatrick
A.
, and
Anderson
R.
,
1989
, “
Influence of Aperture Height and Width on Interzonal Natural Convection in a Full-Scale Air-Filled Enclosure
,”
ASME JOURNAL OF SOLAR ENERGY ENGINEERING
, Vol.
11l
, pp.
278
–
285
.
10.
Churchill
S. W.
, and
Chu
H. H. S.
,
1975
, “
Correlating Equations for Laminar and Turbulent Free Convection from a Vertical Plate
,”
International Journal of Heat and Mass Transfer
, Vol.
18
, pp.
1323
–
1328
.
11.
Kays, W. N., and Crawford, M. E., 1980, Convective Heat and Mass Transfer, 2nd ed., McGraw-Hill, New York, p. 323.
12.
Mussulman, R. L., Warrington, R. O., and Lin, P. C, 1983, “Natural Convection in a Scaled Trombe Wail Geometry,” Heat Transfer and Thermal Performance in Passive Solar Systems, DOE Conference 830702-Exc., Chapter II.
13.
Nansteel
M. W.
, and
Greif
R.
,
1981
, “
Natural Convection in Undivided and Partially Divided Rectangular Enclosures
,”
ASME Journal of Heat Transfer
, Vol.
103
, pp.
623
–
629
.
14.
Neymark
J.
,
Boardman
C. R.
,
Kirkpatrick
A.
, and
Anderson
R.
,
1989
, “
High Rayleigh Number Natural Convection in Partially Divided Air and Water Filled Enclosures
,”
International Journal of Heat and Mass Transfer
, Vol.
32
, No.
9
, pp.
1671
–
1679
.
15.
Ormiston
S. J.
,
Raithby
G. D.
, and
Hollands
K. G. T.
,
1986
, “
Numerical Predictions of Natural Convection in a Trombe Wall System
,”
International Journal of Heat and Mass Transfer
, Vol.
29
, No.
6
, pp.
869
–
877
.
16.
Pratt, R., and Karaki, S., 1980, “Boundary Layer Flow in Trombe Wall Ducts,” National Heat Transfer Conference, Orlando, ASME Paper 80-HT-20.
17.
Raithby
G. D.
,
Hollands
K. G. T.
, and
Unny
T. E.
,
1977
, “
Analysis of Heat Transfer by Natural Convection Across Vertical Fluid Layers
,”
ASME Journal of Heat Transfer
, Vol.
99
, pp.
287
–
293
.
18.
Scott
D.
,
Anderson
R.
, and
Figliola
R.
,
1988
, “
Blockage of Natural Convection Boundary Layer Flow in a Muitizone Enclosure
,”
Int. J. of Heat and Fluid Flow
, Vol.
9
, No.
2
, pp.
208
–
214
.
19.
Viskanta
R.
, and
Lankford
D. W.
,
1981
, “
Coupling of Heat Transfer Between Two Natural Convection Systems Separated by a Vertical Wall
,”
International Journal of Heat and Mass Transfer
, Vol.
103
, pp.
1171
–
1177
.
20.
Wu, Jan-In, 1983, “Parametric Study of Natural Convection Heat Transfer in a Trombe Wall Geometry,” MS Thesis, Montana State University.
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