Preparation and pool boiling characteristics of copper nanofluids over a flat plate heater

Kathiravan, R.; Kumar, Ravi; Gupta, Akhilesh; Chandra, Ramesh

doi:10.1016/j.ijheatmasstransfer.2010.01.022

Cited by 118 publications

(46 citation statements)

References 24 publications

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“… Researchers have reported contradicting findings on the effect of nanofluid on HTC. While some studies have shown an enhancement in HTC for nanofluids compared to water [12,13,[19][20][21], others show deterioration [7,14,[22][23][24] and few document no effect of suspended nanoparticles on HTC [5,6,8,10,11].…”

Section: Introductionmentioning

confidence: 98%

“…According to common consensus by researchers [7][8][9][10][11][12], this nanoparticle deposition layer is the primary mechanism for CHF enhancement, as it changes the porosity and the hydrophilicity of the surface, altering the dynamics of the three phase interface at the heater surface.  Most of the studies report significant CHF enhancement (up to 200%) with nanofluids compared to water [5][6][7][8][9][10][11][12][13][14][15][16][17][18].  Even relatively low concentrations (<1% by volume) of nanoparticles are capable to enhance CHF.…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigation of transient critical heat flux of water-based zinc–oxide nanofluids

Sharma

Buongiorno

McKrell

et al. 2013

International Journal of Heat and Mass Transfer

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Pool boiling experiments were conducted for sandblasted stainless steel (grade 316) plate heaters submerged in deionized (DI) water and water-based zinc-oxide nanofluid, for transient heat flux conditions with power through the heaters increasing quadratically with time. Heat flux in the experiments was increased from zero to CHF in short time frames of 1, 10 and 100 s. Consistent with previous studies, transient CHF for DI water was higher than steady state CHF, and CHF increased with decreasing duration of the transient. Additionally, it was observed that for nanofluid tests, a porous and hydrophilic nanoparticle layer started to deposit on the heater surface in short time frames of 10 and 100 s, and this layer was responsible for the enhanced CHF compared to DI water. However, for the 1 s tests, nanoparticle deposition did not occur and consequently the CHF was not enhanced. Finally, experiments with heaters pre-coated with nanoparticles were performed and it was found that CHF was enhanced for all transient durations down to 1 s, establishing firmly that the CHF enhancement occurs due to surface modifications by the deposited nanoparticles, and not by nanoparticles suspended in solution. Keywords

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Experimental investigation of transient critical heat flux of water-based zinc–oxide nanofluids

Sharma

Buongiorno

McKrell

et al. 2013

International Journal of Heat and Mass Transfer

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“…Kathiravan et al [17] investigated boiling of water-Cu and water-Cu-SDS (9 wt. %) nanofluids on a 300 mm square stainless steel plate.…”

Section: Introductionmentioning

confidence: 99%

Nucleate pool boiling heat transfer of binary nano mixtures under atmospheric pressure around a smooth horizontal cylinder

Sarafraz

Peyghambarzadeh

Fazel

et al. 2013

Per. Pol. Chem. Eng.

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“…As regards pool boiling, some studies report no change of heat transfer in the nucleate boiling regime (Kwark et al, 2010;Vassallo et al, 2004), some report heat transfer deterioration (Bang and Chang, 2005;Lotfi and Shafii, 2009) and others heat transfer enhancement (Kathiravan et al, 2010;Li et al, 2003;Shi et al, 2006;Wen and Ding, 2005).…”

Section: Introductionmentioning

confidence: 99%

The effect of pressure on heat transfer during pool boiling of water-Al2O3 and water-Cu nanofluids on stainless steel smooth tube

Cieśliński¹,

Kaczmarczyk²

2011

Chemical and Process Engineering

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Experimental investigation of heat transfer during pool boiling of two nanofluids, i.e. water-Al 2 O 3 and water-Cu has been carried out. Nanoparticles were tested at the concentration of 0.01%, 0.1%, and 1% by weight. The horizontal smooth stainless steel tubes having 10 mm OD and 0.6 mm wall thickness formed the test heater. The experiments have been performed to establish the influence of nanofluids concentration on heat transfer characteristics during boiling at different absolute operating pressure values, i.e. 200 kPa, ca. 100 kPa (atmospheric pressure) and 10 kPa. It was established that independent of nanoparticle materials (Al 2 O 3 and Cu) and their concentration, an increase of operating pressure enhances heat transfer. Generally, independent of operating pressure, sub-and atmospheric pressure, and overpressure, an increase of nanoparticle concentration caused heat transfer augmentation.

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Preparation and pool boiling characteristics of copper nanofluids over a flat plate heater

Cited by 118 publications

References 24 publications

Experimental investigation of transient critical heat flux of water-based zinc–oxide nanofluids

Experimental investigation of transient critical heat flux of water-based zinc–oxide nanofluids

Nucleate pool boiling heat transfer of binary nano mixtures under atmospheric pressure around a smooth horizontal cylinder

The effect of pressure on heat transfer during pool boiling of water-Al2O3 and water-Cu nanofluids on stainless steel smooth tube

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