The role of graphite foam pore structure on saturated pool boiling enhancement

Pranoto, Indro; Leong, K.C.; Jin, Liwen

doi:10.1016/j.applthermaleng.2012.03.001

Cited by 34 publications

(12 citation statements)

References 22 publications

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“…Later studies of Webb [13] revealed that the porous coatings with spherical particles presented maximum heat transfer coefficients at a coating thickness of roughly three 3 to four times the mean particle diameter for high conductive surface like copper.…”

Section: Introductionmentioning

confidence: 98%

“…Utilizing the phase change process, it offers heat transfer coefficients two orders of magnitude higher than that of traditional single-phase convection with less noise and power consumption. Therefore, intensive studies have been done to assess the pool boiling characteristics in the past few decades [3][4]. Recently, the research interests have been concentrated on developing various heat transfer enhancement techniques, which in general produced micro-structured boiling surfaces [5][6], or altered the properties of working liquid by the addition of external agents, such as the nanofluid [7].…”

Section: Introductionmentioning

confidence: 99%

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Comparative experimental study on pool boiling performance of porous coating and solid structures with reentrant channels

Deng

Wan

Feng

et al. 2016

Applied Thermal Engineering

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Comparative experimental study on pool boiling performance of porous coating and solid structures with reentrant channels

Deng

Wan

Feng

et al. 2016

Applied Thermal Engineering

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“…The pool boiling on metal foams was studied by several Authors, amongst those: Athreya et al (2002), Moghaddam and Ohadi (2003), Coursey et al (2005), Xu et al (2008), Yang et al (2010), Ji et al (2011), Jin et al (2011), Zhu et al (2011), Pranoto et al (2012, Qu et al (2012), and Zhao (2013, 2014).…”

Section: Introductionmentioning

confidence: 99%

Low-GWP refrigerants flow boiling heat transfer in a 5 PPI copper foam

Diani

Mancin

Doretti

et al. 2015

International Journal of Multiphase Flow

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“…[64] and Pranoto et al [65]. In both cases, the graphite foams have showed significant nucleate boiling heat transfer enhancement as compared to plain copper surface.…”

Section: Pool Boiling Enhancement From Porous Foamsmentioning

confidence: 97%

Study of heat transfer enhancement surfaces generated by additive manufacturing techniques

Wong¹

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Thermal management in electronic devices is becoming increasingly challenging due to the higher heat output from the increased packing density of transistors. Nucleate boiling has been shown to be an effective cooling scheme for high heat flux removal. In the recent years, the use of commercial porous foams has been demonstrated to be highly potential for applications in nucleate boiling applications due to its high surface-to-volume ratio. However, there are limitations in terms of pore design and challenges of random pore distribution and poor inter-connectivity. These issues can be overcome by fabricating metallic engineered porous structures using the Selective Laser Melting (SLM) technique, which is a type of additive manufacturing. The objectives of this thesis are to investigate the nucleate pool and flow boiling enhancements using engineered three-dimensional (3D) porous substrates. The use of SLM allows highly customised and complex porous substrates to be fabricated with high dimensional accuracy. Heat transfer performances of these substrates were then investigated using a thermosyphon for pool boiling and a two-phase flow facility for flow boiling. Dielectric fluid FC-72 was used as the coolant due to its electrical and chemical compatibility with electronic devices. For pool boiling, two different designs of porous structures with octet-truss and re-entrant geometries were fabricated. For the octet-truss substrates, effects of unit cell size and substrate height were investigated. The experimental results showed enhanced nucleate boiling heat transfer due to the increased nucleate site density and capillary-assisted suction. For the re-entrant substrates, effects of channel width and configuration were investigated. The design showed potential Abstract v to reduce the problem of liquid-vapour counter-flow at high heat fluxes. Using high speed photography, the boiling mechanisms in 3D porous structures were studied and analysed too.

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The role of graphite foam pore structure on saturated pool boiling enhancement

Cited by 34 publications

References 22 publications

Comparative experimental study on pool boiling performance of porous coating and solid structures with reentrant channels

Comparative experimental study on pool boiling performance of porous coating and solid structures with reentrant channels

Low-GWP refrigerants flow boiling heat transfer in a 5 PPI copper foam

Study of heat transfer enhancement surfaces generated by additive manufacturing techniques

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