Inverse determination of the heat transfer characteristics on a circular plane fin in a finned-tube bundle

2010 ◽  
Vol 46 (11-12) ◽  
pp. 1367-1377 ◽  
Author(s):  
Abdelmoumène Hakim Benmachiche ◽  
Chérif Bougriou ◽  
Said Abboudi
Keyword(s):  
Heat Transfer ◽  
Tube Bundle ◽  
Finned Tube ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics ◽  
Circular Plane

scholarly journals Investigation on Heat Transfer Characteristics of the H-type Finned Tube in Flue Gas with High Content of Ash

2017 ◽  
Vol 105 ◽  
pp. 4680-4684 ◽  
Author(s):  
Tao Han ◽  
Chang’an Wang ◽  
Qi Cao ◽  
Wufeng Chen ◽  
Defu Che
Keyword(s):  
Heat Transfer ◽  
Flue Gas ◽  
Finned Tube ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics

Heat Transfer Characteristics of a Radial Jet Reattachment Flame

1997 ◽  
Vol 119 (2) ◽  
pp. 258-264 ◽  
Author(s):  
J. W. Mohr ◽  
J. Seyed-Yagoobi ◽  
R. H. Page
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Combustion Process ◽  
Local Heat ◽  
Operating Conditions ◽  
Recirculation Region ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics ◽  
Impingement Surface

A Radial Jet Reattachment Combustion (RJRC) nozzle forces primary combustion air to exit radially from the combustion nozzle and to mix with gaseous fuel in a highly turbulent recirculation region generated between the combustion nozzle and impingement surface. High convective heat transfer properties and improved fuel/ air mixing characterize this external mixing combustor for use in impingement flame heating processes. To understand the heat transfer characteristics of this new innovative practical RJRC nozzle, statistical design and analysis of experiments was utilized. A regression model was developed which allowed for determination of the total heat transfer to the impingement surface as well as the NOx emission index over a wide variety of operating conditions. In addition, spatially resolved flame temperatures and impingement surface temperature and heat flux profiles enabled determination of the extent of the combustion process with regards to the impingement surface. Specifically, the relative sizes of the reaction envelope, high temperature reaction zone, and low temperature recirculation zone were all determined. At the impingement surface in the reattachment zone very high local heat flux values were measured. This study provides the first detailed local heat transfer characteristics for the RJRC nozzle.

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