Improving the thermal hydraulic performance of a circular tube by using punched delta-winglet vortex generators

Author(s):  
Yonggang Lei ◽  
Fang Zheng ◽  
Chongfang Song ◽  
Yongkang Lyu
2021 ◽  
Vol 39 (5) ◽  
pp. 1523-1531
Author(s):  
Katherine Barquín ◽  
Alvaro Valencia

Over the last decades several studies have searched for improved Fin and Tube Heat Exchanger (FTHE) designs capable of providing the best thermo-hydraulic performance. The present study aims at quantifying and comparing the thermo-hydraulic performance of different FTHE configurations. Six different designs were analyzed. The first FTHE consisted of an in-line circular tube arrangement and the last one was a FTHE with staggered oval tube with two pairs of Delta Winglet Vortex Generators (DWVG) in common flow up–common flow down (CFU-CFD) configuration. The best performance was obtained using DWVG in CFU-CFD orientation. This configuration enabled a 90% increase of the thermal performance factor when compared with the first case, using only two pairs of vortex generator´s per tube.


2018 ◽  
Vol 55 (5) ◽  
pp. 1387-1403 ◽  
Author(s):  
Parag Jyoti Bezbaruah ◽  
Rajat Subhra Das ◽  
Bikash Kumar Sarkar

2012 ◽  
Vol 26 (9) ◽  
pp. 2949-2958 ◽  
Author(s):  
Seong Won Hwang ◽  
Dong Hwan Kim ◽  
June Kee Min ◽  
Ji Hwan Jeong

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