Splitter plate application on the circular and square pin fin heat sinks

Sajedi, R.; Osanloo, Behzad; Talati, Faramarz; Taghilou, Mohammad

doi:10.1016/j.microrel.2016.03.026

Cited by 41 publications

(9 citation statements)

References 13 publications

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“…Also, the CHF of pin fin rises with the increment of fin number per unit area. Sajedi et al 55 investigated the application of a splitter plate on square and circular pin‐fin heat sinks and revealed that the application of the splitter improved the hydrothermal performance of square as well as circular pins (Figure 6).…”

Section: Computational Studiesmentioning

confidence: 99%

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Improvement of heat transfer through fins: A brief review of recent developments

Maji¹,

Choubey

2020

Heat Trans

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Fins or extended surfaces are generally used in heat exchangers to enhance heat transfer between the main surface and ambient fluid. Various types of simple-shaped fins, namely, rectangular, square, annular, cylindrical, and tapered, have been used with different geometrical combinations. To satisfy industrial demand, different trials have also been carried out for designing optimized fins. The optimization of fins can be performed either by enhancing heat dissipation at an exact fin weight or by diminishing the weight of the fin by precise heat dissipation. Recently a notable amount of work on some typical fins, like, porous fins and perforated fins, has also been carried out. This paper presents a brief review on heat transfer enhancement using fins of different types considering variable thermophysical and geometric parameters, which will also be useful for future use of geometrical modifications of extended surfaces, based on the cost and availability of space.analytical approach, computational approach, experimental approach, perforated fin, porous fin | INTRODUCTIONAdvanced technologies need high-performance heat transfer equipment. Techniques for enhancing the heat transfer rate are classified into two categories: active and passive methods. In the design point of view, active methods are complex as they require some extraneous power input for necessary flow adjustments and to improve the heat transfer rate and thus applications are limited. On the other hand, passive methods require geometrical or surface adjustments to the flow passage by incorporating additional devices. Additionally, by interrupting or varying the existing flow behavior (except for extended surfaces); higher heat transfer coefficients are promoted through this method, which is also followed by an increase in the corresponding pressure drop. The amount of conduction, convection, and radiation of an object shows the amount of heat it transfers. The heat transfer rate is enhanced by increasing the temperature difference between the object and the environment or by enhancing the coefficient of convective heat transfer or by maximizing the surface area of the body. In some cases, it is not appropriate or cost effective to alter the first two options. Introducing a fin to a body, however, expands the surface area and sometimes this is a cost-effective solution for heat transfer problems. Extended surfaces or fins are illustrations of passive methods that are generally used in different industrial applications for the enhancement of heat transfer between the primary surface (heat sink) and the surrounding fluid. Currently reducing the cost and size of fins is the key target of the fin industry. This demand is generally met by the high-thermal-conductivity and costly metals used to fabricate finned surfaces. Many efforts have been made to construct optimized fins. (a) By changing the size and shape of the solid fin: Instead of a longitudinal rectangular solid fin, if the geometry of fin design is changed, the performance parameters and heat tr...

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Section: Computational Studiesmentioning

confidence: 99%

“…Circular pin‐fin heat sink with splitter and its temperature contour 55 [Color figure can be viewed at wileyonlinelibrary.com]…”

Section: Computational Studiesmentioning

confidence: 99%

Improvement of heat transfer through fins: A brief review of recent developments

Maji¹,

Choubey

2020

Heat Trans

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“…Huang et al 3 numerically analyzed the perforated pin-fin array to determine the optimal perforation diameters. Sajedi et al 4 concluded that the thermal resistance of the square and circular pin fins with a splitter plate decreased 36.8% and 23.8% under forced conditions, respectively. Chang et al 5 achieved a 61-68% increase in Nu number for all Ra levels in a heat sink with a dimple fin array under natural convection.…”

Section: Introductionmentioning

confidence: 99%

Effect of channel and fin geometries on a trapeze plate-fin heat sink performance

Özdilli

Şevik

2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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This study aims to achieve a minimum base temperature (or junction temperature) and hence better thermal performance. Trapezoidal curved plate-fin heat sink with dolphin fins and rectangular channel (Model-1) and trapezoidal curved plate-fin heat sink with dolphin fins, cut corner, and rectangular channel (Model-2) were designed and compared with a standard plate-fin heat sink. The effects of fins on the airflow and heat transfer in designed plate-fin heat sinks have been investigated numerically. The numeric results show that the use of fins and small changes in geometry significantly improve the heat transfer rate. Outcomes of the study showed 44–51% and 57–62% convective heat transfer enhancement compared with a standard plate-fin heat sink, without any overall mass augmentation, in Model-1 and Model-2, respectively. The presence of dolphin fins reduces the thermal resistance by up to 30%, which contributes to the overall thermal enhancement of the designed plate-fin heat sinks. Simulation results show that increasing the fins in areas close to the heat source and reducing the non-working areas significantly influence the thermal performance of heat sinks. The results also show that the trapeze plate-fin heat sinks with the different channel-fin geometries are superior to the standard trapeze plate-fin heat sink in thermal performance.

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“…Later, authors concluded that mist/steam coolant produces a lesser friction coefficient and a higher aspect of thermal performance which in results improve the heat transfer rate. Sajedi et al (2016) studied the influence of splitter plate application on the circular and square pin fin heat sinks in order to determine and thus improves the hydro-thermal behavior of a pin fin heat sink. Yadav et al (2016) has done the investigation of micro-channel heat sink included plain rectangular micro-channel, and micro-channel with cylindrical pin fins and they found in terms of pressure drop and heat transfer enhancement, micro-channel with cylindrical pin fin is much superior than other cases.…”

Section: Introductionmentioning

confidence: 99%

Thermal Analysis of Semi-Circular Pin Fins for Application in Electronics Cooling

Yadav¹,

Verma²,

Ray³

et al. 2019

IJRTE

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Efficient thermal energy management of a system is always a prime requirement for many equipment and industries. The performance of almost all devices are affected by the thermal conditions of the system, which also include the surroundings. Generation of heat is an unavoidable phenomenon for any device that runs on external power sources. The generated heat in such systems must be dissipated to the surrounding. It requires efficient utilization of the surface area with minimum flow losses in the system. It was always desirable to have a heat sink in the all devices that occupy minimum space with maximum effectiveness. The present work is an effort to analyze conjugate heat transfer physics in a 3-D system of aluminum pin fins, with air as the working fluid. A finite element solver, COMSOL 4.3a has been used in simulating a staggered pin fin arrangements placed over a base plate. The solver is validated using the empirical data of previous literature. The thermal analysis has been performed on semicircular pin fins with uniform cross section. Consideration is given to staggered arrangement of semicircular fins with various relative distances between two sections of a circle with various inlet velocities. Heat transfer coefficient, Nusselt number, skinfriction coefficient and pressure coefficient are four parameters that are taken into consideration for analyzing all the fin geometries in the current study. The proposed shapes are designed to increase the wetted surface area by keeping the fin material volume constant.

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Splitter plate application on the circular and square pin fin heat sinks

Cited by 41 publications

References 13 publications

Improvement of heat transfer through fins: A brief review of recent developments

Improvement of heat transfer through fins: A brief review of recent developments

Effect of channel and fin geometries on a trapeze plate-fin heat sink performance

Thermal Analysis of Semi-Circular Pin Fins for Application in Electronics Cooling

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