Analytical considerations of flow boiling heat transfer in metal-foam filled tubes

Du, Yang; Zhao, C.Y.; YiShui, Tian; Qu, Zhiguo

doi:10.1007/s00231-011-0853-1

Cited by 17 publications

(4 citation statements)

References 11 publications

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“…liquid-vapor) through fibrous materials. Du et al [18] developed an analytical model to study the flow boiling heat transfer in metal foam filled tubes; the authors compared their model with the experimental results published by Zhao et al [19].…”

Section: Introductionmentioning

confidence: 99%

Air forced convection through metal foams: Experimental results and modeling

Mancin

Zilio

Diani

et al. 2013

International Journal of Heat and Mass Transfer

184

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Section: Introductionmentioning

confidence: 99%

Air forced convection through metal foams: Experimental results and modeling

Mancin

Zilio

Diani

et al. 2013

International Journal of Heat and Mass Transfer

184

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“…According to the uniform metal foam model (Du et al 2012), the total surface area of heat transfer of copper foam can be expressed as follows:…”

Section: Experimental and Calculation Uncertainty Analysismentioning

confidence: 99%

Boiling Heat Transfer in Copper Foam Bilayers in Positive and Inverse Gradients of Pore Density

Wang

Ying

Lichtfouse

et al. 2023

JAFM

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Gradient metal foam is an advanced heat transfer material that decreases resistance to bubble escape and enhances the transfer of boiling heat. In this study, boiling heat transfer and bubble behavior were studied in an experimental set-up with copper foam bilayers configurated either in positive or inverse gradients, utilizing deionized water as working fluid. Positive gradient refers to arranging metal foam layers with high pore density at the bottom, above the heat source, and low pore density on the top. Results show that the heat transfer is higher for gradient metal foam surfaces, of 6.14×105 W/m2, versus a uniform metal foam surface, of 3.94×105 W/m2. For the positive gradient configuration, boiling heat transfer performance first increased with the pore density, then decreased when the pore density was higher than 60 pores per inch (PPI). By contrast, for the inverse gradient, the heat transfer performance was nearly constant with increasing pore density. At the low pore density, the inverse gradient performed better than the positive gradient during the whole boiling process. At high pore density, the positive gradient structure performed better in heat transfer at the early boiling stage. Three main types of bubble escape were observed: For the positive gradient bilayer, the bubbles moved up or down without lateral interference. In contrast, for inverse gradient, the bubbles mostly escape from the sides, which is easy to induce bubble merging. The inverse gradient surface generates larger bubbles, while the positive gradient surface produces a higher frequency of bubble detachment. Accordingly, two liquid replenishment models are proposed: for the positive gradient, external liquid replenishes from the side into the copper foam, while for inverse gradient, the liquid is mainly replenished from the top.

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“…Zhao and coworkers [20,151,152] carried out a series of early studies of flow boiling in metal foam tubes. They examined the effects of mass flowrate, vapor quality, metal foam pore density and operating pressure on flow boiling heat transfer in metal foam.…”

Section: Experimental Study Of Flow Boiling In Metal Foammentioning

confidence: 99%

“…Lu et al [17] simplified complex foam structure as cubic unit cells with slender cylinders. Metal foams are also simplified as dodecahedral with regular pentagon [18], tetrakaidecahedron with cylindrical ligaments and cubic nodes [19], combined V-strut and H-strut [20], and tetrakaidecahedron [21]. Based on the simplified models, correlations for the transport properties, such as permeability, specific area, and effective thermal conductivity, can be obtained as summarized in Table 1.…”

Section: Introductionmentioning

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

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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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Analytical considerations of flow boiling heat transfer in metal-foam filled tubes

Cited by 17 publications

References 11 publications

Air forced convection through metal foams: Experimental results and modeling

Air forced convection through metal foams: Experimental results and modeling

Boiling Heat Transfer in Copper Foam Bilayers in Positive and Inverse Gradients of Pore Density

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

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