Evaluation on dispersion behavior of the aqueous copper nano-suspensions

Li, Xinfang; Zhu, Dongsheng; Wang, Xianju

doi:10.1016/j.jcis.2007.02.067

Cited by 360 publications

(156 citation statements)

References 25 publications

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“…However, the piston type viscometer is that the duration of the heating phase necessary to raise the fluid sample temperature is relative long, especially under the elevated temperature condition, some base fluids may be evaporated. The capillary viscometer is introduced in U-shaped arms (Li et al, 2007). The capillary viscometer is submerged in a glass water tank.…”

Section: Viscosity Of Nanofluidsmentioning

confidence: 99%

“…The vertical angle of the viscometer is accurately controlled with a special tripod. Li et al (2007) pointed out that the capillary tube diameter may influence the apparent viscosity and result in inaccurate in the nanofluids at higher nanoparticle mass fractions, especially at a lower temperature. In addition, nanoparticles might stain at the inner wall of 339 Thermal Property Measurement of Al 2 O 3 -Water Nanofluids www.intechopen.com the bore.…”

Section: Viscosity Of Nanofluidsmentioning

confidence: 99%

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Thermal Property Measurement of Al2O3-Water Nanofluids

Duan¹

2012

Smart Nanoparticles Technology

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Section: Viscosity Of Nanofluidsmentioning

confidence: 99%

Section: Viscosity Of Nanofluidsmentioning

confidence: 99%

Thermal Property Measurement of Al2O3-Water Nanofluids

Duan¹

2012

Smart Nanoparticles Technology

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“…Other similar works have shown that modifying the pH of nanofluid suspension further beyond the IEP have led to the formulation of stable nanofluids. [20][21][22][23] All the above cited literatures are unanimous on the fact that at IEP (point of zero charge on nanoparticles) the nanoparticles will aggregate due to insufficient electrostatic force to overcome the effectiveness of VDW forces of attraction. If the pH changes further away from the IEP, the ionic charge state of the particle surface increases which produces sufficient electrostatic repulsive force that overcomes the VDW forces of attraction.…”

Section: Introductionmentioning

confidence: 99%

Factors affecting the pH and electrical conductivity of MgO–ethylene glycol nanofluids

2015

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Abstract. The pH and electrical conductivity are important properties of nanofluids that have not been widely studied, especially with regard to temperature and ultrasonication energy. To study the factors that affect the pH and electrical conductivity of magnesium oxide-ethylene glycol (MgO-EG) nanofluid, the effects of temperature, volume fraction, particle size and ultrasonication energy were investigated. Two different sizes of MgO were dispersed in EG base fluid up to the volume fraction of 3%, and the pH and electrical conductivity were monitored between the temperatures of 20 and 70°C. Characterization by transmission electron microscopy and size analyses revealed the morphology and sizes of the nanoparticle samples. The pH values dropped consistently with the increase of temperature, while electrical conductivity value increased with the increase of temperature. The experimental result showed that the increase in the MgO volume fraction increased both the pH and electrical conductivity values of the MgO-EG nanofluid. There was no recognizable influence of ultrasonication energy density on the pH and electrical conductivity of the nanofluid; therefore, it was concluded that temperature, volume fraction and particle size are the predominant factors affecting both the pH and electrical conductivity of MgO-EG nanofluid within the present experimental conditions.

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“…Sodium dodecyl sulfate (SDS) was used by Hwang et al (2005) during the preparation of water-based multi-walled carbon nanotube (MWCNT) nanofluids since the fibers are entangled in the aqueous suspension. Li et al (2007) prepared Cu/water nanofluids with nanoparticle sizes typically of 1-100 nm using the two-step method. Results showed that zeta potential and absorbency are important bases for selecting conditions for dispersing particles.…”

Section: Preparation Of Nanofluidsmentioning

confidence: 99%

A review on nanofluids - part II: experiments and applications

Wang

Mujumdar

2008

Braz. J. Chem. Eng.

412

156

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-Research in convective heat transfer using suspensions of nanometer-sized solid particles in base liquids started only over the past decade. Recent investigations on nanofluids, as such suspensions are often called, indicate that the suspended nanoparticles markedly change the transport properties and heat transfer characteristics of the suspension. This second part of the review covers fluid flow and heat transfer characteristics of nanofluids in forced and free convection flows and potential applications of nanofluids. Opportunities for future research are identified as well.

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Evaluation on dispersion behavior of the aqueous copper nano-suspensions

Cited by 360 publications

References 25 publications

Thermal Property Measurement of Al2O3-Water Nanofluids

Thermal Property Measurement of Al2O3-Water Nanofluids

Factors affecting the pH and electrical conductivity of MgO–ethylene glycol nanofluids

A review on nanofluids - part II: experiments and applications

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