Numerical simulation of natural convection heat transfer for annular elliptical finned tube heat exchanger with experimental data

2018 ◽  
Vol 127 ◽  
pp. 541-554 ◽  
Author(s):  
Han-Taw Chen ◽  
Yi-Lun Hsieh ◽  
Ping-Chou Chen ◽  
Yi-Fan Lin ◽  
Kuo-Chi Liu
Keyword(s):  
Heat Transfer ◽  
Experimental Data ◽  
Numerical Simulation ◽  
Natural Convection ◽  
Convection Heat Transfer ◽  
Finned Tube ◽  
Natural Convection Heat Transfer ◽  
Convection Heat ◽  
Tube Heat Exchanger ◽  
Finned Tube Heat Exchanger

Natural Convection Correlations of Circular Finned Tube Heat Exchanger

2011 ◽  
Author(s):  
Hie Chan Kang ◽  
Hyun Soon Jang
Keyword(s):  
Heat Transfer ◽  
Experimental Data ◽  
Natural Convection ◽  
Heat Exchanger ◽  
Convection Heat Transfer ◽  
Small Diameter ◽  
Finned Tube ◽  
Tube Heat Exchanger ◽  
Finned Tube Heat Exchanger ◽  
Half Power

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.

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