Heat transfer enhancement using surfactant based alumina nanofluid jet from a hot steel plate

Tiara, A.M.; Chakraborty, Samarshi; Sarkar, Ishita; Ashok, Avinash; Pal, Surjya K.; Chakraborty, Sudipto

doi:10.1016/j.expthermflusci.2017.08.023

Cited by 35 publications

(17 citation statements)

References 50 publications

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“…Gradeck et al in another experimental investigation with hot ferrous surface has reported that impurities in water or oil in water emulsion marginal increase the maximum surface heat flux as compared to the pure water jet. Moreover, the use of different surfactant or Nanofluid of certain concentration with water jet on hot steel surface increases the maximum surface heat flux in the range of 5–150% as compared to pure water jet . Therefore, addition of small amount of surfactant viz.…”

Section: Rewetting Parametersmentioning

confidence: 99%

“…If nanoparticle concentration increases beyond a certain limit, the thermal conductivity of the nanofluid starts decreasing owing to excessive particle agglomeration. Moreover, nanoparticle deposition even beyond this limit forms a thick layer on the test surface, which resists the heat transfer phenomenon . Al 2 O 3 nanoparticles provides better heat transfer characteristics as compared to that of TiO 2 and DI water, because, Al 2 O 3 nanofluid solution has consistent dispersed phase without any agglomeration, as compared to that of TiO 2 nanofluids .…”

Section: Rewetting Parametersmentioning

confidence: 99%

“…The commonly used fluids in jet impingement cooling are air and water, however, some research has also been reported with other fluids viz. fluorocarbons (FC), Freons, Nanofluids, and oil . The selection of these fluids depends on the rate of heat removal desired from hot surface during quenching.…”

Section: Introductionmentioning

confidence: 99%

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Surface Quenching by Jet Impingement − A Review

Agrawal

2018

steel research int.

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Heat transfer performance with jet impingement quenching of ferrous and non ferrous surface are reviewed for transient cooling condition. The surface rewetting performance during quenching is critically reviewed for various rewetting parameters viz. rewetting temperature, wetting delay, maximum surface heat flux, and rewetting velocity. These rewetting parameters are further assessed for the parameters pertaining to hot surface and coolant. Various published correlations for all the mode of boiling heat transfer and rewetting parameters are also encapsulated in the present review work.

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Section: Rewetting Parametersmentioning

confidence: 99%

Section: Rewetting Parametersmentioning

confidence: 99%

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Surface Quenching by Jet Impingement − A Review

Agrawal

2018

steel research int.

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“…Adding surfactants, also referred to as dispersant, is an effective stability enhancement method that prevents the agglomeration of nanoparticles within the nanofluid [147]. It is considered as a simple and economical chemical method, which reduces the surface tension of the basefluid and improves the immersion of nanoparticles.…”

Section: Addition Of Surfactantsmentioning

confidence: 99%

A Review on Nanofluids: Fabrication, Stability, and Thermophysical Properties

Ali

Teixeira

Addali

2018

Journal of Nanomaterials

308

178

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Nanofluids have been receiving great attention in recent years due to their potential usage, not only as an enhanced thermophysical heat transfer fluid but also because of their great importance in applications such as drug delivery and oil recovery. Nevertheless, there are some challenges that need to be solved before nanofluids can become commercially acceptable. The main challenges of nanofluids are their stability and operational performance. Nanofluids stability is significantly important in order to maintain their thermophysical properties after fabrication for a long period of time. Therefore, enhancing nanofluids stability and understanding nanofluid behaviour are part of the chain needed to commercialise such type of advanced fluids. In this context, the aim of this article is to summarise the current progress on the study of nanofluids, such as the fabrication procedures, stability evaluation mechanism, stability enhancement procedures, nanofluids thermophysical properties, and current commercialisation challenges. Finally, the article identifies some possible opportunities for future research that can bridge the gap between in-lab research and commercialisation of nanofluids.

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“…Interestingly, the optimum concentration of nanoparticles in the conventional lubricant is effective and beyond the optimum concentration, it deteriorates the performance of the nanofluids . The surfactants are used to avoid the agglomeration of nanoparticles and to enhance the thermal stability of nanofluids (Das et al, 2017;Tiara et al, 2017). Furthermore, the thin lubricating film between moving surfaces contains nanoparticles that are broken in smaller particles and reorient themselves at high load and temperature condition and reduces the coefficient of friction (Shrivastava et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Influence of graphene and multi-walled carbon nanotube additives on tribological behaviour of lubricants

Pramanik¹,

Singh²,

Dixit³

et al. 2018

IJSURFSE

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In the present study, the tribological performance of water-based emulsion (lubricant) was investigated by blending carbon fillers such as graphene nanoplatelets and multiwall carbon nanotubes using pin-on-disc tribometer. It was noticed that addition of GnP and MWCNT in water-based emulsion (conventional lubricant) increases the thermal conductivity and viscosity as compared to conventional lubricants. The nanolubricants were supplied with minimum quantity lubrication (MQL) technique at a constant flow rate and pressure in the sliding zone. The addition of 0.8 wt.% concentration of GnP showed 58.39% reduction in coefficient of friction and 61.80% reduction in wear depth compared to the conventional lubricant. Similarly, for 0.8 wt.% concentration of MWCNT showed 26.27% reduction in coefficient of friction and 47.35% reduction in wear depth compared to the conventional lubricant. The sliding surface micrographs were also investigated to explain the synergistic effect of nanoparticles.

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Heat transfer enhancement using surfactant based alumina nanofluid jet from a hot steel plate

Cited by 35 publications

References 50 publications

Surface Quenching by Jet Impingement − A Review

Surface Quenching by Jet Impingement − A Review

A Review on Nanofluids: Fabrication, Stability, and Thermophysical Properties

Influence of graphene and multi-walled carbon nanotube additives on tribological behaviour of lubricants

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