Transient thermal behavior of a passive heat sink integrated with phase change material: A numerical simulation

Safari, Vahid; Kamkari, Babak; Zandimagham, Masoud; Hewitt, Neil

doi:10.1016/j.ijft.2023.100454

Cited by 10 publications

(2 citation statements)

References 43 publications

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“…It has been reported that the number of fins and their height have a significant effect on heat transfer between the heat sink surface and the environment [36]. The effects of fin number, fin thickness, and fin height on heat dissipation have also been reported [31,[37][38][39][40]. In the present study, the impact on heat dissipation of both fin number, which influences the spacing between fins, and fin height was investigated to confirm the effectiveness of increasing both parameters in enhancing heat dissipation in the Al-25%Si heat sink, similarly to conventional heat sinks.…”

Section: Introductionmentioning

confidence: 99%

“…It has been reported that the minimum fin top thickness and minimum draft angle for conventional aluminum alloy die casting are usually 1.8-3 mm and 1-5 • , respectively [9,21]. In various studies on heat sinks, including both experimental and numerical studies, the fin thicknesses ranged from 1-3 mm [21][22][23][24][25][26][27][28][29][30][31][32][33][34]. There are also reports that very thin fins cannot be cast using traditional die casting methods [7].…”

Section: Introductionmentioning

confidence: 99%

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Die Casting of Lightweight Thin Fin Heat Sink Using Al-25%Si

Haga,

Fuse

2024

Metals

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The demand for lightweight and cost-effective heat sinks is increasing. A typical method for economically manufacturing complex-shape heat sinks is die casting. To reduce the weight of the die-cast heat sinks, thinning the fins and base is common practice. We experimented with casting heat sinks using Al-25%Si in a conventional die casting machine with the aim of economically producing thinner fins and bases. Compared with the aluminum alloy used in conventional die casting, Al-25%Si has superior fluidity, which is proven to be very useful for reducing the thickness of the fins and base. As a result, we successfully reduced the heat sink weight using Al-25%Si and a conventional die casting machine. To investigate the properties of the produced Al-25%Si thin fin heat sink, we compared the effects of fin thickness, fin height, number of fins, and base thickness on heat dissipation and weight reduction. Additionally, we compared the weight and heat dissipation properties with those of a commercial heat sink and found that our Al-25%Si heat sink maintains the same heat dissipation performance but for 35% lower weight.

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