Numerical analysis of forced convective heat transfer of nanofluids in microchannel for cooling electronic equipment

Krishna, V. Murali; Kumar, Manoj

doi:10.1016/j.matpr.2019.06.433

Cited by 27 publications

(13 citation statements)

References 26 publications

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“…Publications on nano uids over the past decade review papers related to the heat transfer properties and application of nanofluids were published in 2019. The reviews include solar collector applications [20,21], a review of nanofluids in heat exchangers [22,23], review of nanofluids in heat pipes [24], radiator cooling [25], electronic cooling [5] and also a review on various thermophysical properties of nanofluids [26,27]. A list of some of the review papers published in 2019 is listed in Table 1.…”

Section: Number Of Publications Yearmentioning

confidence: 99%

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An updated review of nanofluids in various heat transfer devices

Okonkwo

Wole‐Osho

Almanassra

et al. 2020

J Therm Anal Calorim

239

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The field of nanofluids has received interesting attention since the concept of dispersing nanoscaled particles into a fluid was first introduced in the later part of the twentieth century. This is evident from the increased number of studies related to nanofluids published annually. The increasing attention on nanofluids is primarily due to their enhanced thermophysical properties and their ability to be incorporated into a wide range of thermal applications ranging from enhancing the effectiveness of heat exchangers used in industries to solar energy harvesting for renewable energy production. Owing to the increasing number of studies relating to nanofluids, there is a need for a holistic review of the progress and steps taken in 2019 concerning their application in heat transfer devices. This review takes a retrospective look at the year 2019 by reviewing the progress made in the area of nanofluids preparation and the applications of nanofluids in various heat transfer devices such as solar collectors, heat exchangers, refrigeration systems, radiators, thermal storage systems and electronic cooling. This review aims to update readers on recent progress while also highlighting the challenges and future of nanofluids as the next-generation heat transfer fluids. Finally, a conclusion on the merits and demerits of nanofluids is presented along with recommendations for future studies that would mobilise the rapid commercialisation of nanofluids.

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Section: Number Of Publications Yearmentioning

confidence: 99%

“…Heat transfer is also used in our buildings to regulate temperature [3] and is necessary for cooking, refrigeration and drying. It is also directly applied in car radiators [4] and for temperature control in electronic devices [5].…”

Section: Introductionmentioning

confidence: 99%

An updated review of nanofluids in various heat transfer devices

Okonkwo

Wole‐Osho

Almanassra

et al. 2020

J Therm Anal Calorim

239

View full text Add to dashboard Cite

show abstract

“…Nojoomizadeh and Karimipour 12 studied numerically the influence of porosity and permeability on forced convection 60–62 heat transfer characteristics of multi-walled carbon nano-tubes 13 suspended in oil (MWCNT/oil nanofluid) in a microchannel filled with a porous medium. Investigations have shown that the local Nusselt number decreased faster at low Reynolds number due to the low flow velocities.…”

Section: Review Of Recent Literature With Results and Discussionmentioning

confidence: 99%

“…Ahmed and Eslamian 11 studied laminar forced convection 60–62 of a nanofluid in a bottom heated rectangular microchannel. 56–58 The overall effect of the Brownian force created an oscillatory motion in place of a translational motion.…”

Section: Review Of Recent Literature With Results and Discussionmentioning

confidence: 99%

Fluid flow characteristics and heat transfer performance in microchannel heat sinks: A review

Jan

Butt

Hassan

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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The hydraulic and thermal characteristics of fluid flow in microchannels have advanced applications for the thermal management of electronic devices. There has been a wide development in the field of research concerning experimental procedures as well as numerical analysis of fluid flow in microchannels over the past decade. This article provides an overview of overall experimental and numerical studies in recent years to obtain clear understanding of various parameters affecting the fluid flow and heat transfer performance in microchannels. Furthermore, the article will come in handy for the researchers and scientists dealing with the basic correlations and some dimensionless parameters governing the hydrodynamic as well as thermic behavior of fluid flow in microchannels. This article underlines the recent studies on nanofluids in this specific area; additionally, it has encapsulated the influence on thermal performance by numerous designs of MCHS such as fins, ribs, etc. The latest research has revealed that there is a little agreement over the literature provided by experimental and theoretical analyses. Eventually, the conclusions drawn from this study and future prospective of research in this area have been thoroughly discussed.

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“…The resulting fluids in the form of a colloidal suspension, often termed “nanofluids” − because of the sizes of the dispersed particles typically in the nanometer range, exhibit higher k values than those of the base fluids. Nanofluids with improved k values have shown promising performances in applications such as solar thermal collectors, , electronic cooling, and heat exchangers. , The k value of the heat transfer fluid depends not only on the type of the dispersed particles but also on their concentration . Typically explored particle concentrations for nanofluids range from ∼0.01 to a few percent (e.g., ∼5%), − where the increases in k , as compared to those of the base fluids, range from a few to a few tens of % (e.g., ∼50%). − At higher particle concentrations, the viscosity of the resulting colloidal suspension can significantly increase, , possibly accompanying particle aggregation and thus causing clogging, which limits its practical applicability in the most relevant geometries.…”

Section: Introductionmentioning

confidence: 99%

High-Thermal-Conductivity and High-Fluidity Heat Transfer Emulsion with 89 wt % Suspended Liquid Metal Microdroplets

2023

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Colloidal suspensions of thermally conductive particles in a carrier fluid are considered promising heat transfer fluids for various thermal energy transfer applications, such as transportation, plants, electronics, and renewable energy systems. The thermal conductivity (k) of the particle-suspended fluids can be improved substantially by increasing the concentration of conductive particles above a “thermal percolation threshold,” which is limited because of the vitrification of the resulting fluid at the high particle loadings. In this study, eutectic Ga–In liquid metal (LM) was employed as a soft high-k filler dispersed as microdroplets at high loadings in paraffin oil (as a carrier fluid) to produce an emulsion-type heat transfer fluid with the combined advantages of high thermal conductivity and high fluidity. Two types of the LM-in-oil emulsions, which were produced via the probe-sonication and rotor–stator homogenization (RSH) methods, demonstrated significant improvements in k, i.e., Δk ∼409 and ∼261%, respectively, at the maximum investigated LM loading of 50 vol % (∼89 wt %), attributed to the enhanced heat transport via high-k LM fillers above the percolation threshold. Despite the high filler loading, the RSH-produced emulsion retained remarkably high fluidity, with a relatively low viscosity increase and no yield stress, demonstrating its potential as a circulatable heat transfer fluid.

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Numerical analysis of forced convective heat transfer of nanofluids in microchannel for cooling electronic equipment

Cited by 27 publications

References 26 publications

An updated review of nanofluids in various heat transfer devices

An updated review of nanofluids in various heat transfer devices

Fluid flow characteristics and heat transfer performance in microchannel heat sinks: A review

High-Thermal-Conductivity and High-Fluidity Heat Transfer Emulsion with 89 wt % Suspended Liquid Metal Microdroplets

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