Performance improvement of high power liquid-cooled heat sink via non-uniform metal foam arrangement

Chen, Kuan Cheng; Wang, Chi-Chuan

doi:10.1016/j.applthermaleng.2015.05.005

Cited by 30 publications

(6 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Their working fluid is a 50% water-ethylene glycol solution. Similar results were reported by Chen and Wang [22]. However, converse to the liquid cooling application, the air and high volumetric airflow requirement often implies a much larger fin height may lead to very lower fin efficiency, suggesting metal foam with long fin height dimension may be ineffective.…”

Section: Problems Of Heat Sink For Housing More Fin Surfacessupporting

confidence: 76%

A Quick Overview of Compact Air-Cooled Heat Sinks Applicable for Electronic Cooling—Recent Progress

Wang

2017

Inventions

Self Cite

View full text Add to dashboard Cite

Abstract:This study provides an overview regarding enhancement of an air-cooled heat sink applicable for electronic cooling subject to cross-flow forced convection. Some novel designs and associated problems in air-cooled heat sinks are discussed, including the drawback of adding surfaces, utilization of porous surfaces such as metal foam or carbon foam, problems and suitable applicable range of highly interrupted surfaces (louver or slit) and longitudinal vortex generator. Though the metal foam may accommodate significant surface area, it is comparatively ineffective for air-cooling application due to its much lower fin efficiency, and this shortcoming can be improved by integrating with solid fin. For highly dense fin spacing (e.g., <1.0 mm), cannelure or grooved surface may be a better choice, and fin structure with periodic contraction and expansion may not be suitable for it introduces additional pressure drop penalty. The partial bypass concept, which manipulates a larger temperature difference at the trailing part of heat sink, can be implemented to significantly reduce the pressure drop. Through some certain niche operation, t the thermal resistance of the partial bypass heat sink may be superior to the conventional heat sink. The trapezoid fin surface featuring easier manufacturing and a smaller weight is shown to have competitive performance against traditional rectangular fin geometry. The IPFM (Interleaved Parallelogram Fin Module) design which combines two different geometrical fins with the odd number fins being rectangular shape, and parallelogram shape in even fin numbers, shows 8%-12% less surface than conventional design but still offers a lower thermal resistance than the conventional rectangular heat sink in lower flowrate operation. The cross-cut design shows appreciable improvements as compared to the conventional plate fin design especially in high velocity regime and the single cross-cut heat sinks are superior to multiple cross-cut heat sinks.

show abstract

Section: Problems Of Heat Sink For Housing More Fin Surfacessupporting

confidence: 76%

A Quick Overview of Compact Air-Cooled Heat Sinks Applicable for Electronic Cooling—Recent Progress

Wang

2017

Inventions

Self Cite

View full text Add to dashboard Cite

show abstract

“…These open cell foams have large surface area-to-volume ratios and high porosities, are light and consist of intertwining porous networks which induce tortuous fluid paths and promote fluid mixing. These key features have rendered them suitable for convective cooling applications such as in electronic thermal management devices and compact heat transfer devices in the aerospace, automobile and defense industries [3,4].…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation of forced convection heat transfer in porous lattice structures produced by selective laser melting

Leong

Wong

2019

International Journal of Thermal Sciences

View full text Add to dashboard Cite

“…Compared to the similar discrete porous blocks with the lowest permeability (10 À6 m 2 ), when the porous blocks are distributed from the lowest to the highest permeability with the increase ratio of 10 along the flow direction, the pressure drop is reduced by 28% with only a weak deterioration (8%) in Nu. Chen and Wang [92] proposed a concept of nonuniform metal foam heat sink by varying pore density along the flow direction, and found that the best arrangement was to place the largest pore density first, followed by the smaller, and then the smallest pore density metal foam.…”

Section: Non-uniformmentioning

confidence: 99%

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

View full text Add to dashboard Cite

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.

show abstract

Performance improvement of high power liquid-cooled heat sink via non-uniform metal foam arrangement

Cited by 30 publications

References 14 publications

A Quick Overview of Compact Air-Cooled Heat Sinks Applicable for Electronic Cooling—Recent Progress

A Quick Overview of Compact Air-Cooled Heat Sinks Applicable for Electronic Cooling—Recent Progress

Experimental and numerical investigation of forced convection heat transfer in porous lattice structures produced by selective laser melting

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

Contact Info

Product

Resources

About