Augmentation of Natural Convection Heat Transfer from a Fin by Lateral Hexagonal Perforations

AlEssa, Abdullah H. M.; Qasem, Isam

doi:10.9734/bjast/2016/12863

Cited by 2 publications

(2 citation statements)

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“…From the investigation, they found that arched splitter in a forwarding arrangement provide the lowest base temperature which resulting in a greater thermal performance. Other studies also included flared fins [5], oblique planar fins [11], rectangular perforation fins [12,13], square and circular perforation fins [14], square perforation fins [15][16][17], triangular perforations [18], radial heat sinks [19] and plate-fins with fillet profile [20].…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation on Thermal Performance of Various Designs Plate-Fin Heat Sinks Subject to Parallel and Impinging Flow

Muhammad Zarif Bin Shaharudin,

Syahar Shawal,

Mazwan Mahat

et al. 2023

ARNHT

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The electronic industry has been working for decades to improve the cooling efficiency of heat sinks by creating more advanced, efficient cooling technologies. However, heat dissipation remains the major problem in this highly competitive sector. Plate-fin heat sinks with and without fillet profiles were investigated and two new proposed designs for plate-fin heat sinks with half-round pins attached to the fin were developed in this study. Numerical analysis was performed using ANSYS FLUENT R21 to evaluate the thermal performance of the proposed designs. For the element optimization, the grid independency test analysis was performed to obtain the optimal number of elements. A constant heat flux of 18750 W/m2 was applied at the bottom plate of heat sinks as the input parameter and two different flow directions e.g., impinging flow and parallel flow at various mass flow rate was also applied to study the base temperature, thermal resistance and Nusselt number of these designs. The study has shown that plate-fin heat sinks with fillet profile and corrugated half-round pins (PFHS 4) subject to parallel flow and plate-fin heat sinks with fillet profile and symmetrical half-round pins (PFHS 3) subject to impinging flow exhibit better thermal performance over other configurations. Hence, these design configurations have a potential to be applied in the future

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Section: Introductionmentioning

confidence: 99%

Numerical Investigation on Thermal Performance of Various Designs Plate-Fin Heat Sinks Subject to Parallel and Impinging Flow

Muhammad Zarif Bin Shaharudin,

Syahar Shawal,

Mazwan Mahat

et al. 2023

ARNHT

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“…More recently, there are still numerous researches on the development of new types of fin for heat transfer enhancement [10][11][12], including that of offset strip fins compact heat exchanger [13], fins with grooves or vortex generators [14,15]. El Hassan Ridouane found that the grooves on the fin surface can enhance local heat transfer significantly [16].…”

Section: Introductionmentioning

confidence: 99%

On the Heat Transfer Enhancement of Plate Fin Heat Exchanger

Xue¹,

Ge²,

Du³

et al. 2018

Preprint

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Abstract:The plate fin heat exchanger is the compact heat exchanger applied in many industries because of its high thermal performance. To enhance the heat transfer of plate fin heat exchanger in further, three new kinds of wavy plate fins, namely perforated wavy fin, staggered wavy fin and discontinuous wavy fin are proposed and investigated by CFD simulations. The effects of key design parameters, including that of waviness aspect ratios, perforation diameters, stagger ratios and breaking distance are investigated, respectively, with the Reynolds number changes from 500 to 4500. It is found that due to the swirl flow and efficient mixing of fluid, the perforation, serration and breaking techniques are beneficial for the enhancement of heat transfer compared to the traditional wavy fin. At the same time, serration is beneficial to reduce the friction factor, and the breaking technique can reduce heat transfer area as well as enhance heat transfer performance. Through the performance evaluation criteria, the staggered wavy fin has an advantage over the small waviness aspect ratio compared to the perforated wavy fin. The maximum performance evaluation criteria (PEC), as high as 1.24, can be obtained for the perforated wavy fin at the largest waviness aspect ratio.

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Augmentation of Natural Convection Heat Transfer from a Fin by Lateral Hexagonal Perforations

Cited by 2 publications

References 0 publications

Numerical Investigation on Thermal Performance of Various Designs Plate-Fin Heat Sinks Subject to Parallel and Impinging Flow

Numerical Investigation on Thermal Performance of Various Designs Plate-Fin Heat Sinks Subject to Parallel and Impinging Flow

On the Heat Transfer Enhancement of Plate Fin Heat Exchanger

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