Dynamic Viscosity of Aluminum Oxide-Ethylene Glycol (Al₂O₃-EG) Nanofluids

Żyła, Gaweł; Fal, Jacek; Gizowska, Magdalena; Witek, A.; Cholewa, M.

doi:10.12693/aphyspola.128.240

Cited by 17 publications

(8 citation statements)

References 16 publications

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“…Moreover, the viscosity of ILs-based nanofluids increased with the SiC loading for the whole temperature range, which can be attributed to the nanoparticles' aggregation. For example, in the case of 0.06 wt% of SiC loaded IL, the viscosity increased by nearly 15.6% at 25 • C. A similar effect of nanoparticles loading on viscosity of ILs was also reported by Saidur et al and Zyla et al [93,94]. dominates the thermal conduction of the ionanofluid at low temperatures.…”

Section: Viscositysupporting

confidence: 79%

A Critical Review on the Development of Ionic Liquids-Based Nanofluids as Heat Transfer Fluids for Solar Thermal Energy

et al. 2021

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In recent years, solar thermal energy (STE) has attracted energy researchers because of its higher efficacy compared to the photovoltaic solar cell. STE is one of the forms of solar energy whereby heat is transferred via a secondary medium called heat transfer fluids (HTFs). Therefore, the overall performance of STE depends on the thermophysical properties and thermal performance of the HTFs. Traditional HTFs suffer from low decomposition temperature, high melting point, and higher vapor pressure. To overcome these limitations, researchers have recently begun working on new HTFs for STE. Ionic liquids (ILs) are considered as a potential candidate for the next generation of HTFs because of their enhanced thermophysical properties, such as thermal stability at high temperature, insignificant vapor pressure, and high ionic conductivity. In addition, thermophysical properties and thermal performance of ILs can be further enhanced by dispersing nanoparticles, which is one of the emerging research interests to improve the efficiency of the solar thermal system. This paper summarizes the recent study of ILs-based nanofluids as HTFs. These summaries are divided into two sections (i) thermophysical properties studies, such as density, viscosity, thermal conductivity, and heat capacity, and (ii) thermal performance studies such as natural convection and forced convection. Synthesis of ILs-based nanofluids and thermophysical properties measurement techniques are also discussed. Based on these state-of-the-art summaries, we offer recommendations for potential future research direction for ILs-based nanofluids.

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Section: Viscositysupporting

confidence: 79%

A Critical Review on the Development of Ionic Liquids-Based Nanofluids as Heat Transfer Fluids for Solar Thermal Energy

et al. 2021

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“…Their results indicated that their nanofluids were Newtonian. On the other hand, some researchers such as Żyła et al [32,33], Li et al [35], Mariano et al [34] and Li et al [35] observed non-Newtonian behaviour of Al2O3, AlN, SnO2, SiC nanoparticles dispersed in ethylene glycol.…”

Section: Introductionmentioning

confidence: 98%

The Investigation of Effects of Temperature and Nanoparticles Volume Fraction on the Viscosity of Copper Oxide-ethylene Glycol Nanofluids

Esfe

2017

Period. Polytech. Chem. Eng.

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“…However, when planning the practical use of nanofluids, it should be taken into account that with increasing concentration of the nanoparticles in a liquid its viscosity increases [19,20,26]. In some cases, an increase in viscosity may also be associated with a change of liquid from Newtonian to non-Newtonian [27][28][29][30][31][32][33]. It was also demonstrated that the addition of nanoparticles changes the electrical properties of ethylene glycol [34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Viscosity and thermal conductivity of MgO–EG nanofluids

Żyła

2017

J Therm Anal Calorim

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Nanofluids are a group of novel engineering materials that are increasingly being used, particularly in the processes of heat exchange. One of the most promising materials in this group is magnesium oxide-ethylene glycol (MgO-EG) nanofluid. The literature informs that this material is characterized by an significant increase in thermal conductivity with low dynamic viscosity increase. The aim of this paper is to provide experimental data on the dynamic viscosity and thermal conductivity of nanofluids containing MgO nanoparticles with 20 nm average size and ethylene glycol as base fluid. To determine dynamic viscosity and thermal conductivity of samples, a HAAKE MARS 2 rheometer (Thermo Electron Corporation, Karlsruhe, Germany) and KD2 Pro Thermal Properties Analyzer (Decagon Devices Inc., Pullman, Washington, USA) were used. Additionally, a comparison of the experimental results and the predictions of theoretical models was presented. It was presented that the vast majority of theoretical models does not describe in a correct way both viscosity and thermal conductivity. It was also shown that the enhancement of this basic physical properties might be described with good result with second degree polynomials. Finally, evaluation of the heat transfer performance was presented.

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Dynamic Viscosity of Aluminum Oxide-Ethylene Glycol (Al₂O₃-EG) Nanofluids

Cited by 17 publications

References 16 publications

A Critical Review on the Development of Ionic Liquids-Based Nanofluids as Heat Transfer Fluids for Solar Thermal Energy

A Critical Review on the Development of Ionic Liquids-Based Nanofluids as Heat Transfer Fluids for Solar Thermal Energy

The Investigation of Effects of Temperature and Nanoparticles Volume Fraction on the Viscosity of Copper Oxide-ethylene Glycol Nanofluids

Viscosity and thermal conductivity of MgO–EG nanofluids

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