A numerical study on the turbulent heat transfer enhancement of Rodbaffle heat exchanger with staggered tubes supported by round rods with arc cuts

2015 ◽  
Vol 76 ◽  
pp. 220-232 ◽  
Author(s):  
Yonghua You ◽  
Fahui Zhang ◽  
Aiwu Fan ◽  
Fangqin Dai ◽  
Xiaobing Luo ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Heat Transfer Enhancement ◽  
Numerical Study ◽  
Turbulent Heat Transfer ◽  
Turbulent Heat ◽  
Transfer Enhancement

Turbulent heat transfer enhancement in an air-to-water heat exchanger

2016 ◽  
Vol 231 (6) ◽  
pp. 1235-1248 ◽  
Author(s):  
Mohsen Sheikholeslami ◽  
Davood Domiri Ganji
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Heat Transfer Enhancement ◽  
Turbulent Heat Transfer ◽  
Bulk Temperature ◽  
Turbulent Heat ◽  
Transfer Enhancement ◽  
Commercial Code ◽  
Before And After ◽  
Double Pipe

Hydrothermal behavior in a water-to-air double-pipe heat exchanger is studied experimentally and numerically. To achieve fully developed conditions, the heat exchanger was built with additional lengths before and after the test section. Commercial code (ANSYS 14) is used for numerical section. In order to enhance rate of heat transfer, discontinuous helical fins is utilized. Results show that Nusselt number augments with the enhancement of Reynolds number and Prandtl number, which are calculated at bulk temperature. The use of square section helical fins also shows a higher heat transfer enhancement rate than that of the circular one. Thermal performance factor is an increasing function of the open area ratio.

Sign in / Sign up

Export Citation Format

Share Document