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|Title:||An Optimum Sinusoidal Arrangement of Tubes in Shelland- Tube Heat Exchangers with Good Heat Transfer Characteristics Combined with Improved Pressure Drop Requirements||Authors:||Afnan Abdulkareem Hussein||Supervisor:||Dr. Raed Bourisli||Keywords:||heat exchange : shell and tube||Issue Date:||2018||Publisher:||Kuwait university - college of graduate studies||Abstract:||Shell-and-Tube heat exchangers are prevalent in numerous power and process applications. The conventional, staggered arrangement results in effective heat transfer, but extremely large pressure drops across the bank of tubes. The result is increased fluid pumping power requirement which eats away at the bottom line of such heat exchangers, be it power generation or otherwise. This work proposes a novel arrangement of the tubes as a longitudinal sinusoidal wave, which reduces the pressure drop requirement while maintaining effective heat transfer characteristics. The studied heat exchanger contains 168 tubes, distributed over 8 columns where the horizontal distance between the adjacent tubes ST is kept constant. The design variables examined included the total tubes in a period, the sine wave amplitude, and vertical distance between tube columns. After validating the 2-D model using a well-known correlation, a parametric analysis was conducted to determine the optimum configuration based on maximizing the reduction in the pressure drop and minimizing the accompanying reduction in the overall Nusselt number—all compared to the standard staggered arrangement. It was found that the optimum sinusoidal arrangement found had a significantly lower pressure drop requirement combined with a smallto- negligible reduction in heat transfer.||URI:||http://hdl.handle.net/123456789/721|
|Appears in Programs:||0630 Mechanical Engineering|
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