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Journal of Heat Transfer | Volume 127 | Issue 2 | RESEARCH PAPER
RESEARCH PAPER

Heat Transfer Enhancement for Finned-Tube Heat Exchangers With Winglets

[+] Author Affiliations
James E. O’Brien, Manohar S. Sohal

Idaho National Engineering and Environmental Laboratory, Idaho Falls, ID 83415

J. Heat Transfer 127(2), 171-178 (Mar 15, 2005) (8 pages) doi:10.1115/1.1842786 History: Received November 07, 2003; Revised April 21, 2004; Online March 15, 2005
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Test section
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Schematic of flow loop
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Winglet locations and geometry: (a) winglet-only case, (b) circular cylinder plus winglets
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Local fin-surface heat transfer coefficients for a delta-winglet pair
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Spanwise variation of local heat transfer coefficient for delta-winglet-pair configuration
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Local fin-surface heat transfer distributions for circular cylinder plus winglets
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Direct comparison of local heat transfer distributions for a circular cylinder with and without winglets
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Spanwise variation in local wake-region heat transfer coefficient, with and without winglets, ReH=1200
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Mean Nusselt numbers
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