CONJUGATE HEAT TRANSFER OF A FINNED TUBE PART A: HEAT TRANSFER BEHAVIOR AND OCCURRENCE OF HEAT TRANSFER REVERSAL

1995 ◽  
Vol 28 (2) ◽  
pp. 133-146 ◽  
Author(s):  
M. Fiebig ◽  
A. Grosse-Gorgemann ◽  
Y. Chen ◽  
N. K. Mitra
Keyword(s):  
Heat Transfer ◽  
Conjugate Heat Transfer ◽  
Finned Tube ◽  
Heat Transfer Behavior ◽  
Transfer Behavior

Local Heat Transfer Behavior and Its Impact on a Single-Row, Annularly Finned Tube Heat Exchanger

1993 ◽  
Vol 115 (1) ◽  
pp. 66-74 ◽  
Author(s):  
X. Hu ◽  
A. M. Jacobi
Keyword(s):  
Heat Transfer ◽  
Mass Transfer ◽  
Convective Heat Transfer Coefficient ◽  
Experimental Studies ◽  
Finned Tube ◽  
Fin Efficiency ◽  
Tube Heat Exchanger ◽  
Heat Transfer Behavior ◽  
Finned Tube Heat Exchanger ◽  
Transfer Behavior

Experimental studies of the local mass transfer characteristics of annularly finned tubes in crossflow are presented. Variations due to boundary layer development, forward-edge separation, the tube wake, horseshoe vortices, and tip vortices are discussed. In addition, regularly located local maxima in mass transfer rates associated with the horseshoe vortex system are found, and conjecture as to their mechanism is offered. Inferring heat transfer behavior from the mass transfer results, we find that the true fin efficiency is always less than that obtained with an assumed constant convective heat transfer coefficient. The difference is 3–7 percent for high-conductivity materials such as aluminum alloys, and 9–17 percent for low-conductivity materials such as mild steels.

scholarly journals Heat transfer behavior of flat plate having 45° ellipsoidal dimpled surfaces

2014 ◽  
Vol 2 ◽  
pp. 67-74 ◽  
Author(s):  
Nopparat Katkhaw ◽  
Nat Vorayos ◽  
Tanongkiat Kiatsiriroat ◽  
Yottana Khunatorn ◽  
Damorn Bunturat ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Flat Plate ◽  
Heat Transfer Behavior ◽  
Transfer Behavior
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