Experimental investigation of forced convective heat transfer performance in nanofluids of Al2O3/water and CuO/water in a serpentine shaped micro channel heat sink

Sivakumar, A.; Alagumurthi, N.; Senthilvelan, T.

doi:10.1007/s00231-015-1649-5

Cited by 44 publications

(13 citation statements)

References 16 publications

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“…However, the Al2O3/water nanofluid shows more enhancement in the heat transfer coefficient compared with CuO/water nanofluid. Their findings disagree with the result of Sivakumar et al [71], who reported that CuO/water nanofluid provides a better heat transfer coefficient compared with Al2O3/water nanofluid because of the high thermal conductivity of CuO particles. This contradiction could be due to the differences in the used boundary condition, nanoparticle size, and model geometry.…”

Section: Heat Transfercontrasting

confidence: 86%

“…Researchers have focused on decreasing thermal resistance in the heat transfer of fluids to ensure the high efficiency of thermal systems. Sivakumar et al [71] proposed a serpentine microchannel of Al 2 O 3 and CuO spherical nanoparticles (15 nm) with different volume fractions (1-3%, 10%, 20%, 30%) in water for cooling purposes. They concluded that nanofluids can decrease the thermal resistance of MCHS.…”

Section: Thermal Conductivitymentioning

confidence: 99%

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Thermal and Hydraulic Performance of CuO/Water Nanofluids: A Review

et al. 2020

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This paper discusses the behaviour of different thermophysical properties of CuO water-based nanofluids, including the thermal and hydraulic performance and pumping power. Different experimental and theoretical studies that investigated each property of CuO/water in terms of thermal and fluid mechanics are reviewed. Classical theories cannot describe the thermal conductivity and viscosity. The concentration, material, and size of nanoparticles have important roles in the heat transfer coefficient of CuO/water nanofluids. Thermal conductivity increases with large particle size, whereas viscosity increases with small particle size. The Nusselt number depends on the flow rate and volume fraction of nanoparticles. The causes for these behaviour are discussed. The magnitude of heat transfer rate is influenced by the use of CuO/water nanofluids. The use of CuO/water nanofluids has many issues and challenges that need to be classified through additional studies.

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Section: Heat Transfercontrasting

confidence: 86%

Section: Thermal Conductivitymentioning

confidence: 99%

Thermal and Hydraulic Performance of CuO/Water Nanofluids: A Review

et al. 2020

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“…For Al 2 O 3 /water and CuO/water nanofluid, Sivakumar et al 33 studied by experiments the forced convective heat transfer through a serpentine-shaped microchannel. Compared with the base fluid, CuO/water nanofluid provided the superiority in thermal enhancement.…”

Section: Nanofluid Transport Under Laminar Flow Regimementioning

confidence: 99%

Advances of nanofluids in heat exchangers—A review

Menni

Chamkha

Ameur³

2020

Heat Trans

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Recently, many researchers have focused on their studies on the analysis of nanofluid flows due to their participation in the enhancement of heat transfer rates in industrial processes. The ordinary fluids, such as water, mineral oils, and so on, are known for their low thermal conductivity in heat transfer processes. A significant enhancement in the thermal properties of ordinary fluid may be obtained by adding nanoparticles having a diameter of less than 100 nm or suspension of fibers. Better spreading, wetting, dispersion, and stability and with acceptable viscosity are the main advantageous properties of nanofluids on a solid surface. The nanofluids are encountered in various thermal engineering systems such as in heat exchangers, refrigeration, thermal management of fuel cells, cooling of nuclear reactors, microelectromechanical systems, and others. In particular, the thermal conversion is known as a great application of nanotechnology, and many studies have been achieved with such fluids in heat exchangers. Therefore, this paper aims to present a global insight into the different applications of nanofluids in various heat exchangers, that is, heat pipe and plate-fin heat exchangers. All research works have been summarized into three main parts: laminar, transition, and turbulent nanofluid flow regimes.

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“…Heat transfer enhancement by employing nanofluids is mainly attributed to its higher thermal conductivity in comparison with conventional fluids [25][26][27]. Increase in the thermal conductivity of these fluids is due to dispersion of solid nanostructures which have higher thermal conductivity compared with liquids [28]. Various materials such as metaloxide, metal and carbonic structures can be used as nanostructures to prepare nanofluids [29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Applications of nanofluids in geothermal: A review

Ahmadi¹,

Ramezanizadeh²,

Nazari³

et al. 2018

MMEP

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Geothermal energy is one of the most suitable sources of energy since it is possible to use it continuously for generating power and providing heat. Firstly, recent trends in geothermal energy are discussed and compared with other types of renewable energies. According to the results of this section, geothermal energy is an attractive choice for future power generation due to its low carbon dioxide emission and levelzied cost of electricity in comparison with other renewable energy sources. Afterwards, applications of nanofluid in geothermal-based energy systems are reviewed and their important results are represented. On the basis of literature review, using nanofluids can result in augment in geothermal systems. The enhancement is dependent on several factors including the type of nanofluid, concentration and system specification. According to the results of a study, the effect of using nanofluid on heat transfer rate became more significant at higher flow rates. In addition, using nanofluids can reduce the size of heat exchangers used in geothermal-based system. The main effects of employing nanofluids is increase in convective heat transfer and pressure loss.

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Experimental investigation of forced convective heat transfer performance in nanofluids of Al2O3/water and CuO/water in a serpentine shaped micro channel heat sink

Cited by 44 publications

References 16 publications

Thermal and Hydraulic Performance of CuO/Water Nanofluids: A Review

Thermal and Hydraulic Performance of CuO/Water Nanofluids: A Review

Advances of nanofluids in heat exchangers—A review

Applications of nanofluids in geothermal: A review

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