Experimental study on the convective heat transfer enhancement in single-phase steam flow by a support grid

2014 ◽  
Vol 63 ◽  
pp. 409-416 ◽  
Author(s):  
Byoung Jae Kim ◽  
Kihwan Kim ◽  
Dong-Eok Kim ◽  
Young-Jung Youn ◽  
Jong-Kuk Park ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Convective Heat Transfer ◽  
Heat Transfer Enhancement ◽  
Convective Heat ◽  
Single Phase ◽  
Steam Flow ◽  
Transfer Enhancement ◽  
Support Grid ◽  
Convective Heat Transfer Enhancement

scholarly journals AN EXPERIMENTAL STUDY OF THE CONVECTIVE HEAT TRANSFER ENHANCEMENT: APPLICATION OF TURBULENCE PROMOTERS

2013 ◽  
Vol 12 (2) ◽  
pp. 03
Author(s):  
P. S. B. Zdanski ◽  
A. E. Bublitz ◽  
C. N. Correa
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Circular Cylinder ◽  
Convective Heat Transfer ◽  
Heat Transfer Enhancement ◽  
Convective Heat ◽  
Convective Heat Transfer Coefficient ◽  
Experimental Methodology ◽  
Transfer Enhancement ◽  
Convective Heat Transfer Enhancement

This work presents an experimental study addressing the effects of turbulence promoters on heat transfer rate at circular cylinder in external cross flow. Within this framework, the work focuses on assessing the effects of three kind of turbulence promoters (with circular, square and hexagonal cross sections) on convective heat transfer enhancement. The distance from turbulence promoters to the circular cylinder (50, 100 and 150mm upstream), as well as the free stream velocity inside the wind tunnel (Reynolds number) were the parameters investigated. The validation of the experimental methodology was performed by comparing the present results with empiric correlations available in the literature. The main results indicate that the convective heat transfer coefficient was enhanced when using turbulence promoters. The highest heat transfer enhancement obtained was around 25% correponding to the case of square turbulence promoter placed closely (50mm) to the circular cylinder. Finally, it is worth mentioning that all the experimental results for the convective coefficient were condensed in a new empirical correlation with good accuracy.

scholarly journals Single-phase convective heat transfer enhancement by spacer grids in a rod bundle

2014 ◽  
Vol 51 (4) ◽  
pp. 543-557 ◽  
Author(s):  
Sang-Ki Moon ◽  
Jongrok Kim ◽  
Seok Cho ◽  
Byoung Jae Kim ◽  
Jong Kuk Park ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Convective Heat Transfer ◽  
Heat Transfer Enhancement ◽  
Convective Heat ◽  
Single Phase ◽  
Transfer Enhancement ◽  
Spacer Grids ◽  
Rod Bundle ◽  
Convective Heat Transfer Enhancement
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