Experimental results for thermal systems consisting of pin-fin heat sinks situated below chimneys are presented. System-level heat transfer and porosity optimization results are compared with previous theoretical predictions. Generally good agreement, both in trend and magnitude, exists between theory and experiment. An optimal porosity of 91 percent is observed for most conditions. Velocity measurements at the chimney exit and the effects of cold inflow are presented and discussed. [S1043-7398(00)00604-6]
Issue Section:
Technical Papers
1.
Fisher
, T. S.
, and Torrance
, K. E.
, 1998
, “Free Convection Limits for Pin-Fin Cooling
,” ASME J. Heat Transfer
, 120
, pp. 633
–640
.2.
Taylor, M. T., 1984, “Experimental Comparison of Pin Fin Configurations for Extended Surface Heat Transfer in Space Applications,” Proceedings of the 4th International Electronics Packaging Conference, Baltimore, pp. 441–467.
3.
Sparrow
, E. M.
, and Vemuri
, S. B.
, 1985
, “Natural Convection/Radiation Heat Transfer from Highly Populated Pin Fin Arrays
,” ASME J. Heat Transfer
, 107
, pp. 190
–197
.4.
Aihara
, T.
, Maruyama
, S.
, and Kobayakawa
, S.
, 1990
, “Free Convective/Radiative Heat Transfer from Pin-Fin Arrays with a Vertical Base Plate (General Representation of Heat Transfer Performance)
,” Int. J. Heat Mass Transf.
, 33
, pp. 1223
–1232
.5.
Zografos
, A. I.
, and Sunderland
, J. E.
, 1990
, “Natural Convection from Pin Fin Arrays
,” Exp. Therm. Fluid Sci.
, 3
, pp. 440
–449
.6.
Armstrong
, J.
, and Winstanley
, D.
, 1988
, “A Review of Staggered Array Pin Fin Heat Transfer for Turbine Cooling Applications
,” ASME J. Turbomach.
, 110
, pp. 94
–103
.7.
Zukauskas, A., 1987, “Convective Heat Transfer in Cross Flow,” Handbook of Single-Phase Convective Heat Transfer, Wiley, New York, Chap. 6.
8.
Fisher
, T. S.
, Torrance
, K. E.
, and Sikka
, K. K.
, 1997
, “Analysis and Optimization of a Natural Draft Heat Sink System
,” IEEE Trans. Compon., Packag. Manuf. Technol., Part A
, 20
, pp. 111
–119
.9.
Fisher
, T. S.
, and Torrance
, K. E.
, 1999
, “Experiments on Chimney-Enhanced Free Convection
,” ASME J. Heat Transfer
, 121
, pp. 603
–609
.10.
Sikka, K. K., Torrance, K. E., and Fisher, T. S., 1996, “Thermal Management Laboratory at the Advanced Facility for Electronic Packaging,” Tech. Rep. E-96-03, Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY.
11.
Kline
, S. L.
, and McClintock
, F. A.
, 1953
, “Describing Uncertainties in Single-Sample Experiments
,” Mech. Eng. (Am. Soc. Mech. Eng.)
, 75
, pp. 3
–8
.12.
DISA, 1985, DISA 55D90 Calibration Equipment Instruction Manual, DISA/DANTEC, Inc.
13.
Thrasher, W. W., Fisher, T. S., and Torrance, K. E., 1998, “Chimney Enhanced Convection of Pin-Fin Heat Sinks,” Tech. Rep. E-98-04, Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY.
14.
Modi
, V.
, and Torrance
, K. E.
, 1987
, “Experimental and Numerical Studies of Cold Inflow at the Exit of Buoyant Channel Flows
,” ASME J. Heat Transfer
, 109
, pp. 392
–399
.Copyright © 2000
by ASME
You do not currently have access to this content.
