Morphology dependence of thermal and rheological properties of oil-based nanofluids of CuO nanostructures

Farbod, Mansoor; Asl, Razieh Kouhpeymani; abadi, Amin Reza Noghreh

doi:10.1016/j.colsurfa.2015.02.049

Cited by 69 publications

(28 citation statements)

References 15 publications

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“…Choi et al showed that non-metallic nanomaterials, multiwall carbon nanotubes (CNTs), in water increased the thermal conductivity up to 160% at 1% volume fraction. After that, much research on heat-transfer fluids was performed with different nanoparticles, such as aluminum [ 13 , 14 , 15 ], gold [ 16 ], copper oxide [ 17 ], CNT [ 18 , 19 ], silicon dioxide, titanium dioxide [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

A Novel Experimental Study on the Rheological Properties and Thermal Conductivity of Halloysite Nanofluids

Alkurdi

Lukács

et al. 2020

Nanomaterials

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Nanofluids obtained from halloysite and de-ionized water (DI) were prepared by using surfactants and changing pH for heat-transfer applications. The halloysite nanotubes (HNTs) nanofluids were studied for several volume fractions (0.5, 1.0, and 1.5 vol%) and temperatures (20, 30, 40, 50, and 60 °C). The properties of HNTs were studied with a scanning electron microscope (SEM), energy-dispersive X-ray analysis (EDX), Fourier-transform infrared (FT-IR) spectroscopy, X-ray powder diffraction (XRD), Raman spectroscopy and thermogravimetry/differential thermal analysis (TG/DTA). The stability of the nanofluids was proven by zeta potentials measurements and visual observation. With surfactants, the HNT nanofluids had the highest thermal conductivity increment of 18.30% for 1.5 vol% concentration in comparison with the base fluid. The thermal conductivity enhancement of nanofluids containing surfactant was slightly higher than nanofluids with pH = 12. The prepared nanofluids were Newtonian. The viscosity enhancements of the nanofluid were 11% and 12.8% at 30 °C for 0.5% volume concentration with surfactants and at pH = 12, respectively. Empirical correlations of viscosity and thermal conductivity for these nanofluids were proposed for practical applications.

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Section: Introductionmentioning

confidence: 99%

A Novel Experimental Study on the Rheological Properties and Thermal Conductivity of Halloysite Nanofluids

Alkurdi

Lukács

et al. 2020

Nanomaterials

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“…Namburu et al [21] studied the behavior of CuO/ethylene glycol/water mixture and confirmed the Newtonian behavior at lower volume concentrations. Farbod et al [23] studied the dependence of thermal conductivity and viscosity with change in morphology of the particles, in engine oil.…”

Section: Introductionmentioning

confidence: 99%

Thermal conductivity and rheological studies for Cu–Zn hybrid nanofluids with various basefluids

Kumar

Vasu

Gopal

2016

Journal of the Taiwan Institute of Chemical Engineers

111

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“…It is expected to give better thermal conductivity and lower specific heats than conventional fluids. The type of nanoparticles being studied or used can be categorised as some advanced structural materials with highest thermal conductivity such as graphene, CNTs, diamond etc [6]. High thermal conductivity such Au, Ag, Cu, Al, Fe, etc for some metallic simples and some metal or non-metallic compounds such as CuO, Al2O3, TiO 2 , ZnO, Fe3O4, SiC, SiO2 etc [7][8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Thermal Conductivity and Stability Studies of Cooking and Waste Cooking Oil as a Based Fluid of TiO2 Nanofluid for Carbon Steel Quenching Process

Aziz

Zaharudin

2020

ARFMTS

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Selection of quench media is important as it depends on the hardenability of the metal alloys, component’s thickness and geometry. Recently, oil and water are frequently used as a quench media in heat treatment industries. Improper quench media will cause the material to become brittle, suffers from geometric distortion, or having a high undesirable residual stress in the components. Oil was used as the fluid base in this research as the main observation focus. To obtain nanofluids and explore thermal conductivity and stability of nanofluids, the two-step method was introduced to prepare the nanofluids with 4 types of different cooking and waste cooking oil as a base fluid (Palm oil, sunflower oil, canola oil and corn oil). TiO2 powder will be mixed with oil fluid by using magnetic stirrer for 1 hour and ultrasonic bathing. Observation method used in 30 days with thermal conductivity and zeta potential to evaluate stability of each nanofluid specimens. Heat treatment onto carbon steel applied and the sample were heated at 950°C for 90 minutes and then quenched in difference oils. Microstructure and hardness analysis applied to get the result. It can conclude, adding nanoparticles in oil base fluid will enhance thermal conductivity and improve thermal performance of heat transfer of the base fluid. Quenching process with oil-based nanofluid will produce martensite structure and waste sunflower and corn oil with TiO2 it's not stable after 30 days observation but the palm and canola oil with TiO2 can achieve the highest hardness test and thermal conductivity.

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Morphology dependence of thermal and rheological properties of oil-based nanofluids of CuO nanostructures

Cited by 69 publications

References 15 publications

A Novel Experimental Study on the Rheological Properties and Thermal Conductivity of Halloysite Nanofluids

A Novel Experimental Study on the Rheological Properties and Thermal Conductivity of Halloysite Nanofluids

Thermal conductivity and rheological studies for Cu–Zn hybrid nanofluids with various basefluids

Thermal Conductivity and Stability Studies of Cooking and Waste Cooking Oil as a Based Fluid of TiO2 Nanofluid for Carbon Steel Quenching Process

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