Single phase flow of nanofluid including graphite and water in a microchannel

Yıldız, Osman; Açıkgöz, Özgen; Yıldız, Güldem; Bayrak, Mustafa; Dalkılıç, Ahmet Selim

doi:10.1007/s00231-019-02663-5

Cited by 11 publications

(5 citation statements)

References 44 publications

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“…Yildiz et al [27] carried out an experimental investigation on convective heat transfer characteristics in an industrial microchannel using graphite water-based nanofluid. The experimental system consisted of a test section, flowmeter, three water pumps, a needle valve, a heat exchanger, a condensing unit, a storage tank, a cartridge heater, and a DC power supply.…”

Section: Experimental Measurements and Setups For Natural And Forced Convection Under The Laminar Regimementioning

confidence: 99%

A Critical Review of Experimental Investigations about Convective Heat Transfer Characteristics of Nanofluids under Turbulent and Laminar Regimes with a Focus on the Experimental Setup

et al. 2021

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In this study, several experimental investigations on the effects of nanofluids on the convective heat transfer coefficient in laminar and turbulent conditions were analyzed. The aim of this work is to provide an overview of the thermal performance achieved with the use of nanofluids in various experimental systems. This review covers both forced and natural convection phenomena, with a focus on the different experimental setups used to carry out the experimental campaigns. When possible, a comparison was performed between different experimental campaigns to provide an analysis of the possible common points and differences. A significant increase in the convective heat transfer coefficient was found by using nanofluids instead of traditional heat transfer fluids, in general, even with big data dispersion from one case to another that depended on boundary conditions and the particular experimental setup. In particular, a general trend shows that once a critic value of the Reynolds number or nanoparticle concentrations is reached, the heat transfer performance of the nanofluid decreases or has no appreciable improvement. As a research field still under development, nanofluids are expected to achieve even higher performance and their use will be crucial in many industrial and civil sectors to increase energy efficiency and, thus, mitigate the environmental impact.

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Section: Experimental Measurements and Setups For Natural And Forced Convection Under The Laminar Regimementioning

confidence: 99%

A Critical Review of Experimental Investigations about Convective Heat Transfer Characteristics of Nanofluids under Turbulent and Laminar Regimes with a Focus on the Experimental Setup

et al. 2021

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“…Sivakumar et al, 5 in this experimental research, compared the heat transfer properties of nano-fluids of Al 2 O 3 -water and CuO-water. O guzhan Yıldız et al 6 studied the heat transfer performance of nanofluids containing graphite in an industrial microchannel. Yang et al 7 in 2017, gave a numerical and empirical analysis of the single-phase fluid operation in a micro-channel with different pin configuration and considered that pin shape plays an important role in balancing the pressure drop and the heat transfer rate to achieve the better the cooling performance of the micro-channel.…”

Section: Introductionmentioning

confidence: 99%

“…Oğuzhan Yıldız et al. 6 studied the heat transfer performance of nanofluids containing graphite in an industrial microchannel. Yang et al.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Nusselt number and pressure drop in hexagonal and rectangular micro-channels in the presence of nano-fluids

Emami

Bonab

Mohammadiun

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part E:

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Few papers investigated the effect of different nano-fluids and geometrical parameters of the micro channels on the performance of heat sinks. In this study, Nusselt number and pressure drop are investigated in differential geometry and Reynolds numbers. Then the effect of the micro-channel is studied for different heat flux. The results show that hexagonal micro-channels represents a better performance than the rectangular and the heat transfer of without using nano-particles in the hexagonal cross-section is about 9% higher than the rectangular cross-section and with the presence of nanoparticles (Al2O3 - CUO- TiO2, φ = 4%), heat transfer is about 30 to 40% higher than the base liquid.

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“…Sivakumar et al, 5 performed an experimental investigation and compared the thermal properties of nano-fluids of Al 2 O 3 -water and CuO -water. O guzhan Yıldız et al 6 studied the thermal performance of nanofluids containing graphite in an industrial microchannel. Yang et al [7][8][9] numerically, investigated the effect of different injection layout arrangements.…”

Section: Introductionmentioning

confidence: 99%

“…Oğuzhan Yıldız et al. 6 studied the thermal performance of nano-fluids containing graphite in an industrial micro-channel. Yang et al.…”

Section: Introductionmentioning

confidence: 99%

Effect of nano-fluid types on the improvement of heat transfer in a micro-channel with regular hexagonal pattern

Emami

Bonab

Mohammadiun

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part E:

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Micro channels are widely used in different industries. The investgations on heat transfer improvments of these instruments are of significant inportance. At hte present study, the influence of different nano-fluids and geometrical charectrestics on the thermal performance of a heat sink which is especially for for micro-channels are investigated. In the present study, the authors investigated the Nusselt number and pressure drop in differential geometries and Reynolds numbers (Re). Then the micro-channel was investigated with different heat flux (q).In the first step, the micro-channel was examined and the final numerical results showed that the hexagonal cross-section can improve heat transfer about 9%. At the second step and after selecting appropriate parameters, the effect of three nano-particles (Al2O3 - CuO- TiO2) were studied. The results presented that aluminum oxide (Al2O3) has the best heat transfer rate among the mentioned nano-fluids. With the presence of nano-particles (Al2O3, φ = 4%) an increment of 40% in heat transfer rate, for the hexagonal cross section was achieved compare to rectangular cross section with water as working fluid.

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Single phase flow of nanofluid including graphite and water in a microchannel

Cited by 11 publications

References 44 publications

A Critical Review of Experimental Investigations about Convective Heat Transfer Characteristics of Nanofluids under Turbulent and Laminar Regimes with a Focus on the Experimental Setup

A Critical Review of Experimental Investigations about Convective Heat Transfer Characteristics of Nanofluids under Turbulent and Laminar Regimes with a Focus on the Experimental Setup

Evaluation of Nusselt number and pressure drop in hexagonal and rectangular micro-channels in the presence of nano-fluids

Effect of nano-fluid types on the improvement of heat transfer in a micro-channel with regular hexagonal pattern

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