Feasibility of using multiport minichannel as thermosyphon for cooling of miniaturized electronic devices

Manova, Stephen; Asirvatham, Lazarus Godson; Nimmagadda, Rajesh; Bose, Jefferson Raja

doi:10.1002/htj.21855

Cited by 12 publications

(2 citation statements)

References 28 publications

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“…Rapid growth in the usage of high-performance electronic devices with compact size requires efficient cooling systems [1,2]. Apart from this, the system should also be capable of preventing the leakage associated with the circulating coolant.…”

Section: Introductionmentioning

confidence: 99%

Conjugate heat transfer performance of stepped lid-driven cavity with Al2O3/water nanofluid under forced and mixed convection

Janjanam¹,

Nimmagadda²,

Asirvatham³

et al. 2021

SN Appl. Sci.

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Two-dimensional conjugate heat transfer performance of stepped lid-driven cavity was numerically investigated in the present study under forced and mixed convection in laminar regime. Pure water and Aluminium oxide (Al2O3)/water nanofluid with three different nanoparticle volume concentrations were considered. All the numerical simulations were performed in ANSYS FLUENT using homogeneous heat transfer model for Reynolds number, Re = 100 to 500 and Grashof number, Gr = 5000, 13,000 and 20,000. Effective thermal conductivity of the Al2O3/water nanofluid was evaluated by considering the Brownian motion of nanoparticles which results in 20.56% higher value for 3 vol.% Al2O3/water nanofluid in comparison with the lowest thermal conductivity value obtained in the present study. A solid region made up of silicon is present underneath the fluid region of the cavity in three geometrical configurations (forward step, backward step and no step) which results in conjugate heat transfer. For higher Re values (Re = 500), no much difference in the average Nusselt number (Nuavg) is observed between forced and mixed convection. Whereas, for Re = 100 and Gr = 20,000, Nuavg value of mixed convection is 24% higher than that of forced convection. Out of all the three configurations, at Re = 100, forward step with mixed convection results in higher heat transfer performance as the obtained interface temperature is lower than all other cases. Moreover, at Re = 500, 3 vol.% Al2O3/water nanofluid enhances the heat transfer performance by 23.63% in comparison with pure water for mixed convection with Gr = 20,000 in forward step.

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Section: Introductionmentioning

confidence: 99%

Conjugate heat transfer performance of stepped lid-driven cavity with Al2O3/water nanofluid under forced and mixed convection

Janjanam¹,

Nimmagadda²,

Asirvatham³

et al. 2021

SN Appl. Sci.

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“…In this regard, nanoparticles suspended in a base fluid are considered to be of great interest to enhance the thermophysical and dielectric properties. These nanoparticle-based fluids termed as nanofluids have a wide variety of applications [6][7][8][9][10]. Many experimental works have been carried out with nanofluids and proved their significance of employing it in industrial cooling applications [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Experimental Studies on Thermophysical and Electrical Properties of Graphene–Transformer Oil Nanofluid

Almeida

Paul

Asirvatham

et al. 2020

Fluids

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The thermophysical and electrical properties of graphene–transformer oil nanofluid at three weight percentage concentrations (0.01%, 0.03%, and 0.05%) were experimentally studied. Experiments conducted to find viscosity, surface tension, density, specific resistance, electrical conductivity, and dielectric dissipation at various temperatures ranging from 20 °C to 90 °C. It was noted that the nanofluid with 0.05% concentration showed an enhancement of 2.5% and 16.6% for density and viscosity, respectively, when compared to transformer oil. In addition, an average reduction in surface tension is noted to be 10.1% for the maximum concentration of nanofluid. Increase in heat load and concentration improves Brownian motion and decreases the cohesive force between these particles, which results in a reduction in surface tension and increases the heat-transfer rate compared to transformer oil. In addition, for the maximum concentration of nanoparticles, the electrical conductivity of nanofluid was observed to be 3.76 times higher than that of the transformer oil at 90 °C. The addition of nanoparticles in the transformer oil decreases the specific resistance and improves the electrical conductivity thereby enhancing the breakdown voltage. Moreover, the thermophysics responsible for the improvement in thermophysical and electrical properties are discussed clearly, which will be highly useful for the design of power transmission/distribution systems.

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Effect of confluence length on the heat transport capability of ultra-thin multiport minichannel thermosyphon

Manova

Asirvatham

Bose

et al. 2022

Applied Thermal Engineering

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Feasibility of using multiport minichannel as thermosyphon for cooling of miniaturized electronic devices

Abstract: The feasibility of using multiport minichannel (MPMC) as thermosyphon for cooling miniaturized electronic products is experimentally investigated with acetone as the working fluid. A detailed analysis

Cited by 12 publications

References 28 publications

Conjugate heat transfer performance of stepped lid-driven cavity with Al2O3/water nanofluid under forced and mixed convection

Conjugate heat transfer performance of stepped lid-driven cavity with Al2O3/water nanofluid under forced and mixed convection

Experimental Studies on Thermophysical and Electrical Properties of Graphene–Transformer Oil Nanofluid

Effect of confluence length on the heat transport capability of ultra-thin multiport minichannel thermosyphon

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