Flow boiling heat transfer enhancement on copper surface using Fe doped Al2O3–TiO2 composite coatings

Kumar, Chandan; Suresh, S.; Aneesh, C R; Kumar, M.C. Santhosh; Praveen, Ayyappan Susila; Raji, K.

doi:10.1016/j.apsusc.2014.08.076

Cited by 39 publications

(4 citation statements)

References 24 publications

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“…The desire to increase both the heat transfer coefficient and the CHF has led to the development of various surface modification techniques in the last decades as the surface and its interaction with the working fluid have a profound effect on the boiling phenomenon. Studies on hydrophobic (water-repellent) and hydrophilic (water-loving) surfaces have already shown some key improvements [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Nanosecond laser texturing of uniformly and non-uniformly wettable micro structured metal surfaces for enhanced boiling heat transfer

Zupančič

Može

Gregorčič

et al. 2017

Applied Surface Science

108

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Microstructured uniformly and non-uniformly wettable surfaces were created on 25-m-thin stainless steel foils by laser texturing using a marking nanosecond Nd:YAG laser ( = 1064 nm) and utilizing various laser fluences and scan line separations. High-speed photography and high-speed IR thermography were used to investigate nucleate boiling heat transfer on the microstructured surfaces. The most pronounced results were obtained on a surface with nonuniform microstructure and non-uniform wettability. The obtained results show up to a 110 % higher heat transfer coefficients and 20-40 times higher nucleation site densities compared to the untextured surface. We show that the number of active nucleation sites is significantly increased in the vicinity of microcavities that appeared in areas with the smallest (10 m) scan line separation. Furthermore, this confirms the predictions of nucleation criteria and proves that straightforward, cost-effective nanosecond laser texturing allows the production of cavities with diameters of up to a few micrometers and surfaces with non-uniform wettability. Additionally, this opens up important possibilities for a more deterministic control over the complex boiling process.

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Section: Introductionmentioning

confidence: 99%

Nanosecond laser texturing of uniformly and non-uniformly wettable micro structured metal surfaces for enhanced boiling heat transfer

Zupančič

Može

Gregorčič

et al. 2017

Applied Surface Science

108

View full text Add to dashboard Cite

show abstract

“…Therefore, the CHF of nanoparticles coated surface is higher than that of bare surface. In addition, Sujith Kumar et al (2015; provides experimental studies on Fe doped Al2O3-TiO2 coating surface and sodium dodecyl sulfate (SDS) doped ZnO-Al2O3 coating surface by spray pyrolysis technique on sand blasted copper surface, respectively. The hydrophilicity of coating surfaces increases with the increase in Fe and SDS doping.…”

Section: Strong Wetting Surfacementioning

confidence: 99%

Recent Advances of Surface Wettability Effect on Flow Boiling Heat Transfer Performance

Cao¹,

Yang²,

Zhao³

et al. 2022

Frontiers in Heat and Mass Transfer

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“…Kumar et al [60,61] conducted an experimental study of the flow boiling HTC and CHF by using spray pyrolysis technique of Fe-doped (Al 2 O 3 -TiO 2 and ZnO-Al 2 O 3 ) hybrid coatings over the copper heater blocks. They tested the flow boiling heat transfer characteristics of the coated as well as the bare blocks at different mass flux conditions.…”

Section: Effect Of Surface Nanocoating On Flow Boiling Heat Transfermentioning

confidence: 99%

Experimental studies of flow boiling heat transfer by using nanofluids

Kamel

Lezsovits

Hussein

2019

J Therm Anal Calorim

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Flow boiling heat transfer widely utilized in numerous industrial applications such as boiler tubes, evaporators and cooling of reactors in a nuclear power plant. Nanofluids are a new category of thermal fluids, made by dispersing a nanometer solid particle which is usually less than 100 nm into conventional liquids such as water, oil engine and ethylene glycol with the intent to enhance the thermal properties of the base fluids. This work reviews the recent experimental studies focusing on the flow boiling heat transfer using nanofluids. The latest results associated with this subject are presented and outlined to account the influence of several parameters, which are related to operating conditions and nanoparticles morphology on the heat transfer coefficient and the critical heat flux. Besides, the effects of nanoparticles on other related sub-phenomenon of the flow boiling by using nanofluids were discussed. Moreover, the latest review papers of the related topic were presented and briefly discussed. Finally, suggestions for future research activities related to this field were also concisely listed.

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Flow boiling heat transfer enhancement on copper surface using Fe doped Al2O3–TiO2 composite coatings

Cited by 39 publications

References 24 publications

Nanosecond laser texturing of uniformly and non-uniformly wettable micro structured metal surfaces for enhanced boiling heat transfer

Nanosecond laser texturing of uniformly and non-uniformly wettable micro structured metal surfaces for enhanced boiling heat transfer

Recent Advances of Surface Wettability Effect on Flow Boiling Heat Transfer Performance

Experimental studies of flow boiling heat transfer by using nanofluids

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