Forced convective performance of perforated circular pin-fin heat sinks

Wen, Mao-Yu; Yeh, Cheng-Hsiung

doi:10.1007/s00231-016-1933-z

Heat Mass Transfer

2016

DOI: 10.1007/s00231-016-1933-z

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Forced convective performance of perforated circular pin-fin heat sinks

Mao-Yu Wen

Cheng-Hsiung Yeh

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Cited by 5 publications

(1 citation statement)

References 29 publications

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“…The heat removal problems have become essential obstacles in the development of electronics. The active cooling devices, such as forced convective fins, , thermoelectric coolers, , and electrocaloric coolers, , are limited by the auxiliary accessories and additional energy consumption. Consequently, passive heat dissipation devices like natural convective fins , and phase change materials , have aroused great concern because of the energy-saving merits.…”

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confidence: 99%

Hard Carbon Nanotube Sponges for Highly Efficient Cooling via Moisture Absorption–Desorption Process

Zhang

Liu

et al. 2020

ACS Nano

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Heat dissipation is a serious limitation for increasingly miniaturized and functionalized electronics, resulting in the continuous need for developing highly efficient cooling methods. Here, utilizing the strong van der Waals force between super-aligned carbon nanotubes (SACNTs), a self-supported three-dimensional (3D) CNT/ CaCl 2 radiator with a more outstanding cooling performance than Al cooling fins was designed. Unlike the soft CNT sponges, these 3D structures could sustain a high pressure of 4.5 MPa with a small compression of 10% and thus are defined as hard CNT sponges. Hard CNT sponges show a 44.3% higher cooling efficiency than commercial Al cooling fins at a humidity of 50% due to the massive latent heat of water combining with the high thermal conductivity of CNTs and the high emissivity of the composites. The self-adjusting moisture absorption−desorption process could dissipate heat by water evaporation when electronics work at high power and spontaneously absorb moisture to regenerate the sponges at the standby mode of electronics. Besides, hard CNT sponges possess a much lower density (0.98−1.70 g cm −3 ) than aluminum (2.7 g cm −3 ). This high-performance cooler provides an alternative thermal management method for electronics.

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confidence: 99%

Hard Carbon Nanotube Sponges for Highly Efficient Cooling via Moisture Absorption–Desorption Process

Zhang

Liu

et al. 2020

ACS Nano

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Superspreading Surface with Hierarchical Porous Structure for Highly Efficient Vapor–Liquid Phase Change Heat Dissipation

Liu,

Fu,

et al. 2024

Small

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Superspreading surfaces with excellent water transport efficiency are highly desirable for addressing thermal failures through the liquid–vapor phase change of water in electronics thermal management applications. However, the trade‐off between capillary pressure and viscous resistance in traditional superspreading surfaces with micro/ nanostructures poses a longstanding challenge in the development of superspreading surfaces with high cooling efficiency in confined spaces. Herein, a heat‐treated hierarchical porous enhanced superspreading surface (HTHP) for highly efficient electronic cooling is proposed. Compared with the single porous structures in nanograss, nanosheets, and copper foam, HTHP with hierarchical honeycomb pores effectively resolves the trade‐off effect by introducing large vertical through‐pores to reduce viscous resistance, and connected small pores to provide sufficient capillary pressure synergistically. HTHP exhibits excellent capillary performance in both horizontal spreading and vertical rising. Despite a thickness of only 0.33 mm, the as‐prepared ultrathin vapor chamber (UTVC) fabricated to exploit the superior capillary performance of HTHP achieved effective heat dissipation with outstanding thermal conductivity (12 121 Wm−1K−1), and low thermal resistance (0.1 KW−1) at a power of 5 W. This regulation strategy based on hierarchical honeycomb porous structures is expected to promote the development of high‐performance superspreading surfaces with a wide range of applications in thermal management.

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Heat transfer performance of air-cooled pin–fin heatsinks: a review

Kesavan

Kumar²,

Marimuthu³

2022

J Therm Anal Calorim

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Forced convective performance of perforated circular pin-fin heat sinks

Cited by 5 publications

References 29 publications

Hard Carbon Nanotube Sponges for Highly Efficient Cooling via Moisture Absorption–Desorption Process

Hard Carbon Nanotube Sponges for Highly Efficient Cooling via Moisture Absorption–Desorption Process

Superspreading Surface with Hierarchical Porous Structure for Highly Efficient Vapor–Liquid Phase Change Heat Dissipation

Heat transfer performance of air-cooled pin–fin heatsinks: a review

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