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TECHNICAL PAPERS: Natural and Mixed Convection

Heat Transfer From an Isothermal Vertical Surface With Adjacent Heated Horizontal Louvers: Validation

[+] Author and Article Information
M. Collins

Dept. of Mechanical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada

S. J. Harrison, P. H. Oosthuizen

Dept. of Mechanical Engineering, Queen’s University, Kingston, Ontario K7L 3N6, Canada

D. Naylor

Dept. of Mechanical, Aerospace, and Industrial Engineering, Ryerson University, Toronto, Ontario M5B 2K3, Canada

J. Heat Transfer 124(6), 1078-1087 (Dec 03, 2002) (10 pages) doi:10.1115/1.1481358 History: Received June 18, 2001; Revised March 07, 2002; Online December 03, 2002
Copyright © 2002 by ASME
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References

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.
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.
Phillips, J., Naylor, D., Oosthuizen, P. H., and Harrison, S. J., 2000, “Modeling of the Conjugate Heat Transfer from a Window Adjacent to a Louvered Shade,” Sixth International Conference on Advanced Computational Methods in Heat Transfer, Madrid, Spain, pp. 127–136.
Collins, M. R., Harrison, S. J., Oosthuizen, P. H., and Naylor, D., 2002, “Heat Transfer from an Isothermal Vertical Flat Plate With Adjacent Heated Horizontal Louvers: Radiation Analysis,” Submitted for publication to ASME Journal of Heat Transfer.
Naylor,  D., and Duarte,  N., 1999, “Direct Temperature Gradient Measurement Using Interferometry,” Exp. Heat Transfer, 12, pp. 279–294.
Touloukian, Y. S., Liley, P. E., and Saxena, S. C., 1970, “Thermal Conductivity: Nonmetallic Liquids and Gases,” Thermophysical Properties of Matter, 3 , Thermophysical Properties Research Center (TPRC), Purdue University, Plenum Publishing, New York.
Touloukian, Y. S., and Makita, T., 1970, “Specific Heat: Nonmetallic Liquids and Gases,” Thermophysical Properties of Matter, 6 , Thermophysical Properties Research Center (TPRC), Purdue University, Plenum Publishing, New York.
Touloukian, Y. S., Saxena, S. C., and Hestermans, P., 1975, “Viscosity: Nonmetallic Liquids and Gases,” Thermophysical Properties of Matter, 11 , Thermophysical Properties Research Center (TPRC), Purdue University, Plenum Publishing, New York.
Eckert, E. R. G., and Goldstein, R. J., Measurements in Heat Transfer, Hemisphere Publishing Corp, Bristol, PA.
Hauf, W., and Grigull, U., 1970, “Optical Methods in Heat Transfer,” Advances in Heat Transfer, 6 , Academic Press, New York, pp. 133–366.
Mehta,  J. M., and Black,  W. Z., 1977, “Errors Associated with Interferometric Measurement of Convective Heat Transfer Coefficients,” Appl. Opt., 16(6), pp. 1720–1726.
Flack,  R. D., 1987, “Mach-Zehnder Interferometer Errors Resulting from Test Section Misalignment,” Appl. Opt., 17(7), pp. 985–987.
Machin, A. D., 1997, “An Experimental Study of Free Convection Heat Transfer from a Vertical Flat Plate in the Presence of Louvers,” MESc. thesis, The University of Western Ontario, London, Ontario, Canada.
Kline,  S. J., and McClintock,  F. A., 1953, “Describing Experimental Uncertainties in Single Sample Experiments,” Mech. Eng. (Am. Soc. Mech. Eng.), 73, pp. 3–8.

Figures

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System geometry (left) and photo (right)
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Schematic of isothermal plate (back cover removed for clarity)
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Comparison of infinite fringe (left) and wedge fringe (right) interferograms
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Comparison of isotherms for all cases. Interferometric (left) and numerical (right).
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Convective heat flux for validation case 1: b=15.4 mm,ϕ=0 deg,Tp=283 K. Points represent interferometric results with associated experimental uncertainty. Solid line represents numerical results. Slat positions are superimposed on graphs for clarity.
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Convective heat flux for validation case 2: b=15.4 mm,ϕ=0 deg,Tp=298 K. Points represent interferometric results with associated experimental uncertainty. Solid line represents numerical results. Slat positions are superimposed on graphs for clarity.
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Convective heat flux for validation case 3: b=20.0 mm,ϕ=0 deg,Tp=283 K. Points represent interferometric results with associated experimental uncertainty. Solid line represents numerical results. Slat positions are superimposed on graphs for clarity.
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Convective heat flux for validation case 4: b=20.0 mm,ϕ=0 deg,Tp=298 K. Points represent interferometric results with associated experimental uncertainty. Solid line represents numerical results. Slat positions are superimposed on graphs for clarity.
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Convective heat flux for validation case 5: b=20.0  mm,ϕ=45 deg,Tp=283 K. Points represent interferometric results with associated experimental uncertainty. Solid line represents numerical results. Slat positions are superimposed on graphs for clarity.
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Convective heat flux for validation case 6: b=20.0 mm,ϕ=45 deg,Tp=298 K. Points represent interferometric results with associated experimental uncertainty. Solid line represents numerical results. Slat positions are superimposed on graphs for clarity.
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Convective heat flux for validation case 7: b=20.0 mm,ϕ=−45 deg,Tp=283 K. Points represent interferometric results with associated experimental uncertainty. Solid line represents numerical results. Slat positions are superimposed on graphs for clarity.
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Convective heat flux for validation case 8: b=20.0 mm,ϕ=−45 deg,Tp=298 K. Points represent interferometric results with associated experimental uncertainty. Solid line represents numerical results. Slat positions are superimposed on graphs for clarity.

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