scholarly journals Heat transfer enhancement in tubular heat exchanger with double V-ribbed twisted-tapes

2016 ◽  
Vol 7 ◽  
pp. 14-24 ◽  
Author(s):  
Sombat Tamna ◽  
Yingyong Kaewkohkiat ◽  
Sompol Skullong ◽  
Pongjet Promvonge
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Heat Transfer Enhancement ◽  
Transfer Enhancement ◽  
Tubular Heat Exchanger ◽  
Twisted Tapes

scholarly journals Heat Transfer Enhancement by Using Different Types of Inserts

2014 ◽  
Vol 6 ◽  
pp. 250354 ◽  
Author(s):  
S. Tabatabaeikia ◽  
H. A. Mohammed ◽  
N. Nik-Ghazali ◽  
B. Shahizare
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Heat Transfer Enhancement ◽  
Heat Exchangers ◽  
Low Cost ◽  
Twisted Tape ◽  
Transfer Enhancement ◽  
Thermal Systems ◽  
Twisted Tapes ◽  
High Efficient

Heat transfer enhancement has been always a significantly interesting topic in order to develop high efficient, low cost, light weight, and small heat exchangers. The energy cost and environmental issue are also encouraging researchers to achieve better performance than the existing designs. Two of the most effective ways to achieve higher heat transfer rate in heat exchangers are using different kinds of inserts and modifying the heat exchanger tubes. There are different kinds of inserts employed in the heat exchanger tubes such as helical/twisted tapes, coiled wires, ribs/fins/baffles, and winglets. This paper presents an overview about the early studies on the improvement of the performance of thermal systems by using different kinds of inserts. Louvered strip insert had better function in backward flow compared to forward one. Modifying the shape of twisted tapes led to a higher efficiency in most of the cases excpet for perforated twisted tape and notched twisted tape. Combination of various inserts and tube with artificial roughness provided promising results. In case of using various propeller types, heat transfer enhancement was dependent on higher number of blades and blade angle and lower pitch ratio.

High Performance Tubular Heat Exchanger with Minijet Heat Transfer Enhancement

2018 ◽  
Vol 40 (9-10) ◽  
pp. 772-783 ◽  
Author(s):  
Jan Wajs ◽  
Dariusz Mikielewicz ◽  
Elzbieta Fornalik-Wajs ◽  
Michał Bajor
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Heat Transfer Enhancement ◽  
High Performance ◽  
Transfer Enhancement ◽  
Tubular Heat Exchanger

Air side heat transfer enhancement using radiantly arranged winglets in fin-and-tube heat exchanger

2020 ◽  
Vol 156 ◽  
pp. 106470
Author(s):  
Mingjie Li ◽  
Jingguo Qu ◽  
Jianfei Zhang ◽  
Jinjia Wei ◽  
Wenquan Tao
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Heat Transfer Enhancement ◽  
Transfer Enhancement ◽  
Tube Heat Exchanger

Heat transfer enhancement for fin-tube heat exchanger using vortex generators

2002 ◽  
Vol 16 (1) ◽  
pp. 109-115 ◽  
Author(s):  
Seong-Yeon Yoo ◽  
Dong-Seong Park ◽  
Min-Ho Chung ◽  
Sang-Yun Lee
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Heat Transfer Enhancement ◽  
Vortex Generators ◽  
Transfer Enhancement ◽  
Tube Heat Exchanger ◽  
Fin Tube
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