Numerical study on heat transfer and fluid flow characteristic of tube bank with integral wake splitters (Effect of wake splitter length)

Alakashi, Abobaker Mohammed (2011) Numerical study on heat transfer and fluid flow characteristic of tube bank with integral wake splitters (Effect of wake splitter length). Masters thesis, Universiti Tun Hussein Onn Malaysia.

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Abstract

The purpose of this research is to study pressure drop and heat transfer characteristics in a tube bank heat exchanger with triangular arrangements by using Computational Fluid Dynamics (CFD). Given the importance of wide practical applications in our lives for heat exchanger. We can improve the thermal and hydraulic performance for heat exchangers by several ways same like adding integral wake splitters (fins) on tubes to reduce pressure drop and increase heat transfer across tube bank. When the flow of fluid through the tube banks in the heat exchanger, there is a rise in pressure drop and decrease in heat transfer, to reduce pressure drop and increase heat transfer through the tube banks must consider how to improve and develop the arrangement of tubes (diameter, length, St and Sl) for tube bank in heat exchanger, To improving the thermal and hydraulic performance of these heat exchangers have been reached several ways to improve performance like adding a new set of integral wake splitter (0.5D, 1D with different direction) on tube bank. For this study we used the 395 x 395 x 1230 mm test section size. The geometric layout of the tube bank is staggered with seven rows of five tubes in each row. The tube diameter, transverse pitch and horizontal pitch are 48.5 mm, 79 mm and 65.8 mm respectively. The analysis was at different values of Reynolds number between (5000 < Re > 27800). The temperature of air was (290 K), and heat flux for each tube was (5250 W/m2).

Item Type:Thesis (Masters)
Subjects:T Technology > TJ Mechanical engineering and machinery > TJ255-265 Heat engines
ID Code:1723
Deposited By:Normajihan Abd. Rahman
Deposited On:28 Sep 2011 12:22
Last Modified:28 Sep 2011 12:22

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