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Natural Convection Correlations of Circular Finned Tube Heat Exchanger

[+] Author Affiliations
Hie Chan Kang

Kunsan National University, Kunsan, South Korea

Hyun Soon Jang

Incheon Human Resource Development Institute, The Korea Chamber of Commerce and Industry, Incheon, South Korea

Paper No. AJK2011-35012, pp. 4023-4027; 5 pages
  • ASME-JSME-KSME 2011 Joint Fluids Engineering Conference
  • ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D
  • Hamamatsu, Japan, July 24–29, 2011
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-4440-3
  • Copyright © 2011 by KSME


An experimental study has been conducted on natural convection heat transfer for seventeen kinds of circular finned tube heat exchanger. The transient method was used to obtain the heat transfer coefficient. The experimental data were presented and their characteristics lengths were discussed. The experimental data were presented and correlated in the ranges of 27 < RaDh < 2300, 1.2 < Do /Di < 2.8, and 0.12 < Pf /Di < 0.26. The Nusselt number correlated with the quarter power of the Rayleigh number, based on the hydraulic diameter, for the small diameter fins, the same as laminar natural convection; however, the correlation was with the half power for the large fin diameters and small fin pitches.

Copyright © 2011 by KSME



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