Thermal conductivity enhancement in MoO3–H2O nano-sheets based nano-fluids

Kana, N.; Galmed, A. H.; Khamliche, T.; Kaviyarasu, K.; Maaza, M.

doi:10.1016/j.matpr.2020.04.562

Cited by 3 publications

(1 citation statement)

References 13 publications

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“…The different nanomaterials are graphite, carbon nanotubes, metal oxides, graphene oxides, metals, diamonds, carbides, graphenes, and nitrides [10]. Normally in the metal-based nano-fluids for nanoformulations, the thermal conductivity is lesser when compared with the base metals, and settling issues were developed during the nanofluid formulations [11]. In comparison with metals, metal-oxide-based nanomaterials showed better thermophysical properties.…”

Section: Introductionmentioning

confidence: 99%

Influence of Process Parameters and Convective Heat Transfer on Thermophysical Properties of SiO2 Nanofluids by Multiobjective Function Analysis (DFA)

Suprabha

Mahesha

Nanjundappa

2023

Journal of Nanomaterials

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From the requirements, high-performance cooling systems in the applications of solar, heat exchangers, and chemical industries are needed to improve efficiency. The metal-oxides-based nanofluids composed the better thermal properties with exchange of heat-transfer mechanisms. Therefore, this study mainly focused on nanosilicon dioxide materials to produce the nanofluids with blending of water-base medium by two-step techniques. The scanning electron microscope was used to analyze the presence of silicon dioxide nanoparticles from the procured material. During the two-step method input aspects like weight fraction of silicon dioxide (1.5–4.5 wt%), particle sizes (10–30 µm), pH range of water (5–9), and sonication process time (2–4 hr) were considered. The outcomes like thermal conductivity, specific heat capacity, and viscosity were selected as thermal physical properties. The desirability techniques were implemented to identify the best optimal input parameters from the nanofluid processing. From the desirability outcomes, the processed nanosilicon dioxide fluids with respective input parameters were 0.9623 W/mK for thermal conductivity, 688 J/kg K forspecific heat capacity, and 0.00162 for viscosity, respectively. The heat-transfer coefficient was successfully identified with processed nanosilicon dioxide fluids, and the Nusselt number and Reynolds number were attained with respective heat-transfer coefficients.

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Section: Introductionmentioning

confidence: 99%

Influence of Process Parameters and Convective Heat Transfer on Thermophysical Properties of SiO2 Nanofluids by Multiobjective Function Analysis (DFA)

Suprabha

Mahesha

Nanjundappa

2023

Journal of Nanomaterials

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Effect of Plasma Liquid on Colloidal (CoNPs) and (PtNPs) Nanostructures Produced by Laser Ablation Technique for Antibacterial Applications

Khamees,

Al-Rubaye,

Gençyılmaz

et al. 2023

Int. J. Nanosci.

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In this work, the biological and physical properties of colloidal platinum nanoparticles (PtNPs) and cobalt nanoparticles (CoNPs) were examined for antibacterial applications. The colloidal PtNPs and CoNPs were produced using two different liquids (double-distilled water (DDW) and Dulbecco’s Modified Eagle’s Medium (DMEM)) by laser ablation technique (PLAL). Characterization techniques such as transmission electron microscopy (TEM), UV–Vis spectroscopy and Fourier transform infrared (FTIR) were used to determine some physical properties of PtNPs and CoNPs. The antibacterial effects of colloidal PtNPs and CoNPs at different doses on various bacteria were investigated and their antibacterial activity resistances were calculated by measuring the inhibition zone widths. The effect of the liquid used in the production, the type of bacteria and dose amounts on the antibacterial resistance of these nanoparticles (NPs) were determined. In this study, it has been shown that the liquid used in the production of PtNPs and CoNPs can create significant changes in the physical and antibacterial properties of NP, especially by changing the size and concentration of colloidal PtNPs.

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A Perspective Review on Thermal Conductivity of Hybrid Nanofluids and Their Application in Automobile Radiator Cooling

Ukueje

Abam

Obi

2022

Journal of Nanotechnology

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Hybrid nanofluids developed with the fusion or suspension of two or more different nanoparticles in a mixture as a novel heat transfer fluid are currently of interest to researchers due to their proven better measured thermal conductivities. Several reviewed articles exist on the thermal conductivity of hybrid nanofluids, a vital property for which the heat transfer rate is directly dependent. This review aims to understand the current developments in hybrid nanofluids and their applications. An extensive literature survey was carried out of heuristic-based articles published in the last 15 years. The review reiterates topical research on the preparation methods and ways to improve the stability of readied fluid, thermophysical properties of mixture nanofluids, and some empirical correlations developed for estimating thermal conductivity. Hybrid nanofluid studies on heat transfer performance in automobile radiator cooling systems were also obtained and discussed. The review’s significant findings include the following: (1) hybrid nanofluids produce a noticeable thermal conductivity enhancement and a relatively higher heat transfer coefficient than mono nanofluids and regular liquids. Furthermore, through the uniform dispersion and stable suspension of nanoparticles in the host liquids, the maximum possible thermal augmentation can be obtained at the lowest possible concentrations (by <0.1% by volume). (2) An automobile radiator’s overall heat transfer accomplishment can thus be boosted by using a mixture of nanofluids as conventional coolants. Up-to-date literature results on the thermal conductivity enhancement of mixture fluids are also presented in this study. Nonetheless, some of the barriers and challenges acknowledged in this work must be addressed for its complete deployment in modern applications.

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Thermal conductivity enhancement in MoO3–H2O nano-sheets based nano-fluids

Cited by 3 publications

References 13 publications

Influence of Process Parameters and Convective Heat Transfer on Thermophysical Properties of SiO2 Nanofluids by Multiobjective Function Analysis (DFA)

Influence of Process Parameters and Convective Heat Transfer on Thermophysical Properties of SiO2 Nanofluids by Multiobjective Function Analysis (DFA)

Effect of Plasma Liquid on Colloidal (CoNPs) and (PtNPs) Nanostructures Produced by Laser Ablation Technique for Antibacterial Applications

A Perspective Review on Thermal Conductivity of Hybrid Nanofluids and Their Application in Automobile Radiator Cooling

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