Heat Transfer and Pressure Drop Performance of Finned Tube Bundles

[+] Author and Article Information
P. W. Eckels

Research and Development Laboratories, Westinghouse Electric Corporation, Pittsburgh, Pa. 15235

T. J. Rabas

Combustion Turbine Systems Division, Westinghouse Electric Corporation, Concordville, Pa. 19331

J. Heat Transfer 107(1), 205-213 (Feb 01, 1985) (9 pages) doi:10.1115/1.3247380 History: Received March 14, 1984; Online October 20, 2009


The heat transfer and pressure drop performance of two types of finned tubes used in the air-conditioning industry are reported for 14 different bundle configurations. Twelve of these configurations contained a new type of finned tube called K-Y and two contained a more conventional pin fin. A unique characteristic of all these configurations is zero or negative fin-tip clearances. A comparison of the performance of these air-conditioning type finned tubes with negative fin-tip clearance is then made with the performance of typical air-cooled heat exchanger tubes used in the process and power industries. Both the heat transferred and the pressure drop are substantially higher with the air-conditioning configurations; the heat transfer coefficient is superior even to plain tubes. The very high heat transfer performance is more the result of the negative fin-tip clearance than the fin shape or type.

Copyright © 1985 by ASME
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