Hydraulic and thermal performances of metal foam and pin fin hybrid heat sink

Li, Yongtong; Gong, Liang; Xu, Minghai; Joshi, Yogendra

doi:10.1016/j.applthermaleng.2019.114665

Cited by 43 publications

(4 citation statements)

References 43 publications

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“…Metal foam heat sinks with high thermal conductivity baffles [104,105], pipes [48], and cylinders [89] have been studied for improving the heat transfer performance. Also, metal foam heat sink with pin fins for thermal management was reported by Seyf and Layeghi [106], Mohammadian et al [16] and Li et al [71,107]. In Ref.…”

Section: Metal Foam Heatmentioning

confidence: 91%

A Review of Thermo-Hydraulic Performance of Metal Foam and Its Application as Heat Sinks for Electronics Cooling

Gong

et al. 2021

Journal of Electronic Packaging

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High porosity metal foams offer large surface area per unit volume and have been considered as effective candidates for convection heat transfer enhancement, with applications as heat sinks in electronics cooling. In this paper, the research progress in thermo-hydraulic performance characterization of metal foams and their application as heat sinks for electronics cooling are reviewed. We focus on natural convection, forced convection, flow boiling, and solid/liquid phase change using phase change materials (PCMs). Under these heat transfer conditions, the effects of various parameters influencing the performance of metal foam heat sink are discussed. It is concluded that metal foams demonstrate promising capability for heat transfer augmentation, but some key issues still need to be investigated regarding the fundamental mechanisms of heat transfer to enable the development of more efficient and compact heat sinks.

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Section: Metal Foam Heatmentioning

confidence: 91%

A Review of Thermo-Hydraulic Performance of Metal Foam and Its Application as Heat Sinks for Electronics Cooling

Gong

et al. 2021

Journal of Electronic Packaging

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“…Furthermore, they observed that AWP has achieved 115% improvement in the Nusselt number as compared to the smooth channel. Moreover, Li et al 16 proposed a hybrid heat sink consisting of metal foam (MF) and pin fins (PF) to solve the problem of high heating in electronic devices. Moreover, they also studied the effect of thermal contact resistance between MF and PF on the thermal performance of the metal foam pin fin (MFPFH) heat sink.…”

Section: Introductionmentioning

confidence: 99%

Performance improvement and thermodynamic assessment of microchannel heat sink with different types of ribs and cones

Zhang

Ahmad

Khan

et al. 2022

Sci Rep

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The present study aims to investigate the performance of microchannel heat sink via numerical simulations, based on the first and second law of thermodynamics. The heat transfer and flow characteristics of rectangular microchannel heat sinks have been improved by adding six different types of surface enhancers. The cross-sections include rectangular, triangular, and hexagonal-shaped ribs and cones. The cones have been created from the same cross-sections of ribs by drafting them at an angle of 45° orthogonal to the base, which is expected to decrease the pressure drop, dramatically. The performance of ribs and cones has been evaluated using different parameters such as friction factor, wall shear stress, entropy generation rate, augmentation entropy generation number, thermal resistance, and transport efficiency of thermal energy. The results of the present study revealed that the novel effect of coning at an angle of 45° reduces frictional losses (Maximum pressure drop reduced is 85%), however; a compromise on thermal behavior has been shown (Maximum Nusselt number reduced is 25%). Similarly, the application of coning has caused a significant reduction in wall shear stress and friction factor which can lead to reducing the pumping power requirements. Moreover, triangular ribs have more ability to transfer thermal energy than rectangular and hexagonal ribs. Furthermore, it has been examined in the present study that the trend of total entropy generation rate for triangular ribs decreases up to Re = 400 and then increases onwards which means that thermal losses are more significant than frictional losses at lower Reynolds number. However, frictional losses dominate over thermal losses at higher Reynolds numbers, where vortex generation takes place, especially in triangular ribs.

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“…Various techniques have surfaced over time to minimize this problem. Use of PCM with metal foam (Li et al, 2020;Qu et al, 2012;Tseng et al, 2019), adding nanoparticles or fibers in PCM (Choi et al, 2014;Frusteri et al, 2005;Yu et al, 2014), using fins integrated with PCM (Kandasamy et al, 2008) are a few techniques that are being used as solutions. The disadvantage of metal foam and nanoparticles is that the former increases the heat sink weight and, in the latter, there is a problem of settling down of nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of PCM Based Hybrid Heat Sink for Electronic Cooling

et al. 2022

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The present experimental study reports the thermal performance analysis of a phase change material (PCM)-based finned heat sink placed on a silicone rubber heater which mimics the CPU chip and is cooled by natural and forced convection. The heat sink is subjected to constant and cyclic loading for five input power values (4, 6, 8, 10, and 12 W). Paraffin wax and 1-hexadecanol are selected as PCM for this study, which have melting points in the ranges of 58°C-60°C and 48°C-50°C, respectively. The steady-state and transient base temperature behavior of the heat sink indicated that the heat sink with PCM performed better than the heat sink without PCM under natural convection subjected to a constant load. With the increase in input power, the melting time of the PCM is reduced. Between the two PCMs, the heat sink filled with 1-hexadecanol performed better in transient operation. It was observed that cyclic loading offers better insight into the thermal behavior of the heat sinks at different power inputs. The total operation time of heat sink filled with 1-hexadecanol takes less time than paraffin-filled heat sink during cyclic loading when subjected to natural convection. For cyclic loading, the total operation time of the heat sink is reduced by a factor of 0.41 and 0.43 times when cooled by forced convection as compared to natural convection for heat sink filled with paraffin wax and 1-hexadecanol, respectively.

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Hydraulic and thermal performances of metal foam and pin fin hybrid heat sink

Cited by 43 publications

References 43 publications

A Review of Thermo-Hydraulic Performance of Metal Foam and Its Application as Heat Sinks for Electronics Cooling

A Review of Thermo-Hydraulic Performance of Metal Foam and Its Application as Heat Sinks for Electronics Cooling

Performance improvement and thermodynamic assessment of microchannel heat sink with different types of ribs and cones

Experimental Study of PCM Based Hybrid Heat Sink for Electronic Cooling

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