Nanoparticles size effect on thermophysical properties of ionic liquids based nanofluids

Main, Kevin L.; Eberl, Brandon K.; McDaniel, Daniel; Tikadar, Amitav; Paul, Titan C.; Khan, Jamil A.

doi:10.1016/j.molliq.2021.117609

Cited by 23 publications

(5 citation statements)

References 46 publications

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“…Zhang et al [52] found a maximum of 28.6 % increase in heat conductivity of ILs-based nanofluids comprising 1-ethyl-3-methylimidazolium acetate ([C 2 mim]Ac) ILs and at 5 wt.% of graphene nanoparticles. Main et al [53] studied the density, viscosity, and thermal conductivity of 1 wt.% and 2 wt.% of Al 2 O 3 dispersed 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide ([C 4 mim][NTf 2 ]) ionic liquid and observed at 1 wt.%, the viscosity increase of 13.71 % and thermal conductivity increase of 9.73 %, at 2 wt.%, viscosity enhancement of 30 % and thermal conductivity increase of 11 % compared to the base fluid. Studies revealed that, the thermophysical properties are enhanced for IL nanofluids.…”

Section: Ylimidazolium ([Emim]mentioning

confidence: 99%

Ionic‐Liquid‐Based Nanofluids and Their Heat‐Transfer Applications: A Comprehensive Review

Lingala

2023

ChemPhysChem

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Due to their improved thermophysical characteristics, such as their strong ionic conductivity, negligible vapor pressure, and thermal stability at high temperatures, the ionic liquids (ILs) are being looked at viable contender for future heat transfer fluids. Additionally, the dispersing nanoparticles can further improve the thermophysical characteristics and thermal performance of ionic liquids, which is one of the emerging research interests to increase the heat transfer rates of the thermal devices. The latest investigations about the utilization of ionic liquid nanofluids as a heat transfer fluid is summarized in this work. These summaries are broken down into three types: (a) the thermophysical parameters including thermal conductivity, viscosity, density, and specific heat of ionic liquids (base fluids), (b) the thermophysical properties like thermal conductivity, viscosity, density, and viscosity of ionic liquids based nanofluids (IL nanofluids), and (iii) utilization of IL nanofluids as a heat transfer fluid in the thermal devices. The techniques for measuring the thermophysical characteristics and the synthesis of IL nanofluids are also covered. The suggestions for potential future research directions for IL nanofluids are summarized.

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Section: Ylimidazolium ([Emim]mentioning

confidence: 99%

Ionic‐Liquid‐Based Nanofluids and Their Heat‐Transfer Applications: A Comprehensive Review

Lingala

2023

ChemPhysChem

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“…Densities of base ionic liquids and ionic liquid‐based nanofluids (1 wt.%) with different particle sizes at 20°C. Reproduced from Lee et al 46 with permission. Copyright@2021, Journal of Molecular Liquids .…”

Section: Application Of Nanoparticles In Nonaqueous Rfbsmentioning

confidence: 99%

“…Mixing nanoparticles with ionic liquids can also enhance the thermophysical properties of base ionic liquids. Main et al 46 experimentally evaluated the effect of nanoparticle size on the density, viscosity, and thermal conductivity of ionic liquid nanofluids. The addition of alumina nanoparticles (10, 30, 60, and 90 nm) with different particle sizes (mass concentration of 1 wt.%) to the ionic liquid of 1-butyl-3-methylimidazolium bis [(trifluoromethyl)sulfonyl]imide was studied.…”

Section: The Effect Of Nanoparticles On Electrolytementioning

confidence: 99%

Research progress on nanoparticles applied in redox flow batteries

et al. 2022

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In recent years, the focus on the utilization of renewable energy has continued to heat up. However, renewable energy has the drawbacks of intermittency and mismatch between power generation and electricity consumption in time and space, thus the energy storage system is indispensable. Redox flow batteries (RFBs), as an electrochemical energy storage system, have attracted widespread attention with the nature of flexible design and long service life. The components of RFB and the efficient combination of components play a key role in battery performance. Due to the size effect and physicochemical properties of nanoparticles, the ionic conductivity, thermal conductivity, and mechanical effects are improved in RFBs with the addition of nanoparticles, thus improving the power performance and charge–discharge cycle life of the battery. In this review paper, we mainly report the application and research progress of nanoparticles applied in RFBs. The applications of nanoparticles in electrode, electrolyte, and proton (ion) exchange membranes in aqueous and nonaqueous RFBs are briefly introduced, with emphasis on adjusting the type, size, surface treatment, loading method, and loading quality of nanoparticles. The transport property and electrochemical reaction rate of active species and charges in RFBs can be improved after the inclusion of nanoparticles, leading to the improvement of the power density, energy efficiency, and stability of the battery. The applications and research progress of nanoparticles in RFBs can be systematically and comprehensively understood via the analyses and discussions in this review. It also provides a new technical idea to promote the commercial development and deployment of high‐performance RFB.

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“…It was noticed that the average thermal conductivity enhancements were 9.73%, 6.53%, 6.41%, and 7.60% for 10 nm, 30 nm, 60 nm, and 90 nm nanoparticles, respectively. A Brookfield DV3T viscometer and a KD2 Pro thermal property analyzer were used for the measurement of nanofluid properties [ 55 ].…”

Section: Impact Of Morphology and Concentration Of Nanoparticles On N...mentioning

confidence: 99%

Application of Nanofluids in Improving the Performance of Double-Pipe Heat Exchangers—A Critical Review

et al. 2022

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Nanofluids can be employed as one of the two fluids needed to improve heat exchanger performance due to their improved thermal and rheological properties. In this review, the impact of nanoparticles on nanofluid properties is discussed by analyzing factors such as the concentration, size, and shape of nanoparticles. Nanofluid thermophysical properties and flow rate directly influence the heat transfer coefficient and pressure drop. High thermal conductivity nanoparticles improve the heat transfer coefficient; in particular, metallic oxide (such as MgO, TiO2, and ZnO) nanoparticles show greater enhancement of this property by up to 30% compared to the base fluid. Nanoparticle size and shape are other factors to consider as well, e.g., a significant difference in thermal conductivity enhancement from 6.41% to 9.73% could be achieved by decreasing the Al2O3 nanoparticle size from 90 to 10 nm, affecting nanofluid viscosity and density. In addition, equations to determine the heat transfer rate and the pressure drop in a double-pipe heat exchanger are presented. It was established that the main factor that directly influences the heat transfer coefficient is the nanofluid thermal conductivity, and nanofluid viscosity affects the pressure drop.

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Nanoparticles size effect on thermophysical properties of ionic liquids based nanofluids

Cited by 23 publications

References 46 publications

Ionic‐Liquid‐Based Nanofluids and Their Heat‐Transfer Applications: A Comprehensive Review

Ionic‐Liquid‐Based Nanofluids and Their Heat‐Transfer Applications: A Comprehensive Review

Research progress on nanoparticles applied in redox flow batteries

Application of Nanofluids in Improving the Performance of Double-Pipe Heat Exchangers—A Critical Review

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