Enhanced pool boiling on composite microstructured surfaces with microcavities on micro-pin-fins

Liu, Bin; Yang, Xi; Li, Qing; Chang, Huaizheng; Qiu, Yu

doi:10.1016/j.icheatmasstransfer.2022.106350

Cited by 26 publications

(2 citation statements)

References 28 publications

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“…Recently, BHT has been proposed as a solution for systems with extremely high heat flux in a very compact volume. Therefore, boiling heat dissipation is extensively employed in various industrial sectors, including batteries for electric vehicles, electronic gadgets, boilers, nuclear power plants, and reactors [5].…”

Section: Introductionmentioning

confidence: 99%

An Experimental Investigation on the Pool Boiling Heat Transfer of R-134a on Microporous Cu-MWCNT Composite Surfaces

Pingale,

Katarkar,

Madgule

et al. 2024

Thermo

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Multiwalled carbon nanotubes (MWCNTs) exhibit outstanding physical properties, including high thermal conductivity, excellent mechanical strength, and low electrical resistivity, which make them suitable candidates for a variety of applications. The work presented in this paper focuses on the pool boiling performance of refrigerant R-134a on microporous Cu-MWCNT composite surface layers. A two-stage electrodeposition technique was used to fabricate Cu-MWCNT composite coatings. In order to achieve variation in the surface properties of the Cu-MWCNT composite surface layer, electrodeposition was carried out at various bath temperatures (25 °C, 30 °C, 35 °C, and 40 °C). All surfaces coated with the Cu-MWCNT composite demonstrated superior boiling performance compared to the uncoated surface. Heat transfer coefficient (HTC) values for Cu-MWCNT composite surface layers, prepared at bath temperatures of 25 °C, 30 °C, 35 °C, and 40 °C, exhibited improvements of up to 1.75, 1.88, 2.06, and 2.22, respectively, in comparison to the plain Cu surface.

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Section: Introductionmentioning

confidence: 99%

An Experimental Investigation on the Pool Boiling Heat Transfer of R-134a on Microporous Cu-MWCNT Composite Surfaces

Pingale,

Katarkar,

Madgule

et al. 2024

Thermo

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show abstract

“…To process these data, processing units with high densities of transistors are needed, and these units generate large amounts of heat. − To dissipate this heat, advanced cooling technologies are needed for effective thermal management during the postprocessing of large amounts of data. In this context, boiling heat transfer, owing to its high thermal efficiency, has emerged as a vital next-generation cooling method from the perspective of catering to the rising demand for cooling technology. − This is because the phase change (from fluid to vapor) that occurs during boiling is accompanied by the absorption of large amounts of latent heat, which enhances the cooling performance.…”

Section: Introductionmentioning

confidence: 99%

Two-Phase Particle Image Velocimetry Visualization of Rewetting Flow on the Micropillar Interfacial Surface

Nam,

Cho,

Lee

et al. 2024

ACS Appl. Mater. Interfaces

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Boiling heat transfer has a high thermal efficiency by latent heat absorption, which makes it an attractive process for cooling electronic device chips. Critical heat flux (CHF), the maximum heat flux, is a crucial factor determining the operating range of the boiling applications. The CHF can be enhanced by improving the fluid supply to the boiling surface. Herein, micropillar interfacial surfaces have been proposed to increase the CHF by increasing the rewetting flow, which determines the fluidsupply capacity near the bubble contact line. A state-of-art twophase particle image velocimetry (two-phase PIV) technique is introduced for rewetting flow measurement on micropillar structures (MPSs) to analyze the CHF-enhancement mechanism. The two-phase PIV visualization setup offers high spatial (∼120 μm) and temporal (∼2000 Hz) resolutions for measuring rewetting flow during bubble growth. The MPS samples exhibit enhanced CHF and rewetting flows compared to those on a plain surface. The roughest case, D04G10 sample, had a CHF of 164 W/cm 2 , 1.84 times higher than that of the plain surface. The D04G10 sample also recorded the highest rewetting velocity of 0.311 m/s, 4.7 times higher than that of the plain surface. The comparison between the rewetting flow and wicking performance shows that wicking-induced flow accounted for a substantial part (∼17%) of the rewetting flow and contributed significantly to the CHF enhancement owing to large rewetting flow by delaying vapor-film formation. Based on these findings, a new CHF model suggested by introducing the rewetting parameter shows a high CHF prediction accuracy of 94%.

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Experimental investigations on the thermal performance of ultrasonic field in pool boiling on rib surfaces

Liu,

Hu,

Liu

et al. 2023

Heat Mass Transfer

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Enhanced pool boiling on composite microstructured surfaces with microcavities on micro-pin-fins

Cited by 26 publications

References 28 publications

An Experimental Investigation on the Pool Boiling Heat Transfer of R-134a on Microporous Cu-MWCNT Composite Surfaces

An Experimental Investigation on the Pool Boiling Heat Transfer of R-134a on Microporous Cu-MWCNT Composite Surfaces

Two-Phase Particle Image Velocimetry Visualization of Rewetting Flow on the Micropillar Interfacial Surface

Experimental investigations on the thermal performance of ultrasonic field in pool boiling on rib surfaces

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