Experimental Investigation of Electrical Conductivity and Permittivity of SC-TiO 2 -EG Nanofluids

Fal, Jacek; Barylyak, Adriana; Besaha, Khrystyna; Bobitski, Yaroslav; Cholewa, M.; Zawlik, Izabela; Szmuc, K.; Cebulski, J.; Żyła, Gaweł

doi:10.1186/s11671-016-1590-7

Cited by 26 publications

(10 citation statements)

References 46 publications

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“…and dispersed in several base fluids (water, propylene glycol, ethylene glycol, bio-glycol, palm oil, glycerol, ionic fluid, coconut oil, engine oil, etc.) have been subsequently examined at various mass/volume concentrations or fractions for different temperature ranges [ 14 , 15 , 16 , 17 , 18 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Stability, Viscosity, and Electrical Conductivity of Water-Based Hybrid Nanofluid of MWCNT-Fe2O3

et al. 2021

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The superiority of nanofluid over conventional working fluid has been well researched and proven. Newest on the horizon is the hybrid nanofluid currently being examined due to its improved thermal properties. This paper examined the viscosity and electrical conductivity of deionized water (DIW)-based multiwalled carbon nanotube (MWCNT)-Fe2O3 (20:80) nanofluids at temperatures and volume concentrations ranging from 15 °C to 55 °C and 0.1–1.5%, respectively. The morphology of the suspended hybrid nanofluids was characterized using a transmission electron microscope, and the stability was monitored using visual inspection, UV–visible, and viscosity-checking techniques. With the aid of a viscometer and electrical conductivity meter, the viscosity and electrical conductivity of the hybrid nanofluids were determined, respectively. The MWCNT-Fe2O3/DIW nanofluids were found to be stable and well suspended. Both the electrical conductivity and viscosity of the hybrid nanofluids were augmented with respect to increasing volume concentration. In contrast, the temperature rise was noticed to diminish the viscosity of the nanofluids, but it enhanced electrical conductivity. Maximum increments of 35.7% and 1676.4% were obtained for the viscosity and electrical conductivity of the hybrid nanofluids, respectively, when compared with the base fluid. The obtained results were observed to agree with previous studies in the literature. After fitting the obtained experimental data, high accuracy was achieved with the formulated correlations for estimating the electrical conductivity and viscosity. The examined hybrid nanofluid was noticed to possess a lesser viscosity in comparison with the mono-particle nanofluid of Fe2O3/water, which was good for engineering applications as the pumping power would be reduced.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Stability, Viscosity, and Electrical Conductivity of Water-Based Hybrid Nanofluid of MWCNT-Fe2O3

et al. 2021

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“…Other researchers are investigating various types of nanoparticles in various base fluids e.g. graphene [13,14], Pd in water [15], Pd/Ag in ethylene glycol and distilled water [16] and TiO 2 in ethylene glycol [17]. * corresponding author; e-mail: jacekfal@prz.edu.pl This paper shows results of studies on electrical conductivity of thulium oxide nanoparticles suspended in ethylene glycol with various mass concentrations.…”

Section: Introductionmentioning

confidence: 99%

Electrical Conductivity of Ethylene Glycol Based Nanofluids with Different Types of Thulium Oxide Nanoparticles

2017

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The paper presents experimental investigation on electrical conductivity of thulium oxides-ethylene glycol (Tm2O3-EG) nanofluids based on nanoparticles with three different sizes, and prepared in different conditions. Nanofluids were prepared with two-step method with use of the nanoparticles obtained by precipitation method. Measurements were conducted at constant temperature 293.15 K for various mass concentrations from 0% to 20% with 5% step. The electrical conductivity was measured using conductivity meter MultiLine 3410 (WTW GmBH, Weilheim, Germany) and temperature was stabilized in a water bath MLL 547 (AJL Electronic, Cracow, Poland). The results indicate that increase in mass concentration of nanoparticles in base fluid causes increase in electrical conductivity of Tm2O3-EG nanofluids. The enhancement in electrical conductivity of nanosuspensions of thulium oxide is dependent on particle size.

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“…All measurements were conducted in the temperature range of 298.15–333.15 K with a frequency starting from 0.1 to 10 6 Hz with a logarithmic scale in 55 steps. More details on the measurement procedure and information about standard deviation of measurements (<6%) are available elsewhere [ 19 , 20 , 21 ].…”

Section: Methodsmentioning

confidence: 99%

High AC and DC Electroconductivity of Scalable and Economic Graphite–Diamond Polylactide Nanocomposites

et al. 2021

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Two types of graphite/diamond (GD) particles with different ash content was applied to prepare new electroconductive polylactide (PLA)-based nanocomposites. Four samples of nanocomposites for each type of GD particles with mass fraction 0.01, 0.05, 0.10, and 0.15 were prepared via an easily scalable method—melt blending. The samples were subjected to the studies of electrical properties via broadband dielectric spectroscopy. The results indicated up to eight orders of magnitude improvement in the electrical conductivity and electrical permittivity of the most loaded nanocomposites, in reference to the neat PLA. Additionally, the influence of ash content on the electrical conductivity of the nanocomposites revealed that technologically less-demanding fillers, i.e., of higher ash content, were the most beneficial in the light of nanofiller dispersibility and the final properties.

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Experimental Investigation of Electrical Conductivity and Permittivity of SC-TiO 2 -EG Nanofluids

Cited by 26 publications

References 46 publications

Experimental Investigation on Stability, Viscosity, and Electrical Conductivity of Water-Based Hybrid Nanofluid of MWCNT-Fe2O3

Experimental Investigation on Stability, Viscosity, and Electrical Conductivity of Water-Based Hybrid Nanofluid of MWCNT-Fe2O3

Electrical Conductivity of Ethylene Glycol Based Nanofluids with Different Types of Thulium Oxide Nanoparticles

High AC and DC Electroconductivity of Scalable and Economic Graphite–Diamond Polylactide Nanocomposites

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