Heat Transfer Augmentation for Electronic Cooling

Gururatana, Suabsakul

doi:10.3844/ajassp.2012.436.439

Cited by 23 publications

(3 citation statements)

References 4 publications

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“…Comparando los resultados experimentales del comportamiento térmico con las curvas características del fabricante, encontraron que eran mayores que las registradas experimentalmente, lo que hacía necesario sobredimensionar el disipador de calor para evitar problemas de sobrecalentamiento. Otros estudios relacionados con el uso de nuevos materiales o geometrías complejas fueron revisados en los trabajos llevados a cabo por Gururatana (2012), Ahmed et al (2018), Unni y Majali (2019) y Khattak y Ali (2019), en los que se evidencia que la iniciativa por el uso de geometrías complejas y novedosas, además de ser una tendencia en crecimiento, produce un efecto positivo en el desempeño térmico y fluidodinámico de los disipadores de calor, razón por la cual cada vez son más abundantes los análisis tanto teórico-experimentales, como los numéricos, de estos dispositivos de refrigeración de componentes electrónicos.…”

Section: Alejandro Matta Herreraunclassified

Análisis y diseño de sistemas térmicos. Aplicaciones en disipadores de calor y gasificadores de biomasa

Villalba¹,

Delgado-Mejía²,

Montoya³

et al. 2023

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En este libro, podrás encontrar metodologías para el diseño y análisis de sistemas térmicos, especialmente para gasificadores y disipadores de calor. Metodologías que van de la mano de herramientas computacionales y de nuevas estrategias que permiten optimizar estos sistemas. En los primeros dos capítulos se presentan dos métodos para mejorar el desempeño térmico de disipadores de calor; jugando con la modificación del área superficial, en los que, además, se realiza un análisis térmico, mediante software de fuente abierta y comercial con el objetivo de mostrar las bondades de cada uno. En el tercer capítulo se plantea un estudio detallado para el diseño y análisis de gasificadores de cascarilla de arroz de lecho fijo, en el que se definen algunas consideraciones derivadas de la experiencia acumulada por el equipo de investigadores de la Institución Universitaria Pascual Bravo, donde se dan a conocer aquellos parámetros característicos del proceso.

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Section: Alejandro Matta Herreraunclassified

Análisis y diseño de sistemas térmicos. Aplicaciones en disipadores de calor y gasificadores de biomasa

Villalba¹,

Delgado-Mejía²,

Montoya³

et al. 2023

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show abstract

“…A considerable increase in energy consumption accompanies the actual industrial development. For decades, researchers were always facing intrinsic complexities related to the fluid flow and heat transfer applications in various important industrial sectors, including heat exchangers, solar energy, energy efficiency in building and cooling electrical and electronic components [1][2][3][4][5]. Several investigations have recently focused on analysing of the thermo-hydrodynamic process to identify the parameters that can directly influence the flow structure and the heat transfer rate in channels provided with baffles installed on the internal walls.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Spacing Design of Two Alternate Baffles on the Performance of Heat Exchangers

Salhi

Amghar

Filali

et al. 2022

DDF

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The present study investigates numerically the heat transfer process based forced convective flow of an incompressible fluid in a two-dimensional rectangular channel. Two baffles are imposed periodically on the lower and upper walls. The study mainly focused on the influence of the arrangement and spacing separating the baffles on the heat transfer's intensification. The values of the Reynolds number for the present turbulent flow regime were chosen in the range of 104 to 8.73 × 104. The equations resulting from the three conservation laws, namely continuity, Navier-Stokes, and energy equations, are solved numerically based on the finite volume method. SIMPLE algorithm is used to overcome the pressure-velocity coupling, and k-ε model is used for the computation of turbulent patterns. Numerical simulations are carried out to study the dynamic and thermal behavior influenced by the control parameters. The physical quantities calculated are the axial velocity, the local, mean Nusselt numbers and the friction coefficient. The obtained results show that the friction coefficient decreases proportionally with the increase of Re number, and the local Nusselt number increases with the Reynolds number. As the spacing between the baffles decreases, the NR ratio increases, and as the Reynolds number increases, NR decreases NR = 6.13, 5.31, 4.62, and 4.30 for case P1, NR = 5.1, 4.5, 3.89, and 3.64, for case P2, NR = 5.00, 4.45, 8.83, and 3.51, for case P3, for equal Reynolds number, 104, 2×104, 4×104, 8.73×104, respectively.

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“…The shape can impact on the heat transfer. So for the longer fins or fins with smaller thickness they became relatively more effective with heat transfer and important on pressure drop [5]. The dimensions of the extended surfaces, the fin height and a limitation on aspect ratio have a significant effect on heat sink performance.…”

Section: Introductionmentioning

confidence: 99%

Effect of air fan position on heat transfer performance of elliptical pin fin heat sink subjected to impinging air flow

Mohammed

Razuqi

2021

Journal of Thermal Engineering

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Heat rejection from electronic components by heat sink is still a viable cooling solution. The optimal heat sink design enables higher heat transfer performance. The purpose of the present study is to predict the effectiveness of heat sink elliptical closely spaced fins subjected to impinging air cooling. The air fan is the main source of impinging air, then its position and direction with the heat sink take the main role in present work. Two positions of fan location are studied. The first position where the fan is outside the heat sink and the second case where the fan is existed in a cut out template. So there are one impinging air inlet with four transverse outlets and one axial exit opposite to the air flow inlet. Reynolds number were taken at a range 3400-16000, the flow was turbulent so k-ϵ model turbulence model was used as our choice to simulate mean flow characteristics for turbulent flow conditions. The heat sink base was subjected to constant heat flux condition and proposed with range between 10000-40000 kW/m 2 to keep the base temperature at a temperature around 100 o C. The Results of temperature contour lines depicted a variation from the base to the extended surfaces tips. The comparison between the two cases results showed high temperature difference in the case with the cut out template. Nusselts numbers indicated that the second case performed better in heat transfer than the first case. The experimental and numerical results showed a good agreement with a difference not exceeding 2%.Cite this article as: Mohammed AA, Razuqi SA. Effect of air fan position on heat transfer performance of elliptical pin fin heat sink subjected to impinging air flow.

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Heat Transfer Augmentation for Electronic Cooling

Cited by 23 publications

References 4 publications

Análisis y diseño de sistemas térmicos. Aplicaciones en disipadores de calor y gasificadores de biomasa

Análisis y diseño de sistemas térmicos. Aplicaciones en disipadores de calor y gasificadores de biomasa

Effect of the Spacing Design of Two Alternate Baffles on the Performance of Heat Exchangers

Effect of air fan position on heat transfer performance of elliptical pin fin heat sink subjected to impinging air flow

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