Enhancing Thermo-Economic Performance of TiO2-Water Nanofluids: An Experimental Investigation

Mukherjee, Sayantan; Mishra, Purna Chandra; Chaudhuri, Paritosh

doi:10.1007/s11837-020-04336-9

Cited by 12 publications

(5 citation statements)

References 42 publications

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“…Consequently, the nanolubricants serve as better coolants than pure water on both work roll and workpiece surfaces, and their cooling rates increase with the increase in wettability while the TC changes insignificantly. Even though all the lubricants experienced a high temperature in the contact zone, the comparison of TC at ambient temperature is still applicable at such high temperatures, as TC increases with temperature elevation [40,41]. Accordingly, relatively more pearlite is transformed from austenite and retained in the microstructure, owing to a higher cooling rate [42].…”

Section: Wettability and Thermal Conductivitymentioning

confidence: 99%

Eco-Friendly Water-Based Nanolubricants for Industrial-Scale Hot Steel Rolling

Kamali

Huo

et al. 2020

Lubricants

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Eco-friendly and low-cost water-based nanolubricants containing rutile TiO2 nanoparticles (NPs) were developed for accelerating their applications in industrial-scale hot steel rolling. The lubrication performance of developed nanolubricants was evaluated in a 2-high Hille 100 experimental rolling mill at a rolling temperature of 850 °C in comparison to that of pure water. The results indicate that the use of nanolubricant enables one to decrease the rolling force, reduce the surface roughness and the oxide scale thickness, and enhance the surface hardness. In particular, the nanolubricant consisting of 4 wt % TiO2, 10 wt % glycerol, 0.2 wt % sodium dodecyl benzene sulfonate (SDBS) and 1 wt % Snailcool exhibits the best lubrication performance by lowering the rolling force, surface roughness and oxide scale thickness by up to 8.1%, 53.7% and 50%, respectively. The surface hardness is increased by 4.4%. The corresponding lubrication mechanisms are attributed to its superior wettability and thermal conductivity associated with the synergistic effect of rolling, mending and laminae forming that are contributed by TiO2 NPs.

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Section: Wettability and Thermal Conductivitymentioning

confidence: 99%

Eco-Friendly Water-Based Nanolubricants for Industrial-Scale Hot Steel Rolling

Kamali

Huo

et al. 2020

Lubricants

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“…The thermal conductivity apparatus and viscometer were already calibrated with water and did not require further validation. 43…”

Section: Methodsmentioning

confidence: 99%

“…The thermal conductivity apparatus and viscometer were already calibrated with water and did not require further validation. 43 In Figure 2, the test section consists of a 100 ml Pyrex glass container placed at the center of a cubical section made of hardboard of thickness 2 mm having 101.6 mm in length. The gap between the glass container and the inner wall of the cube was filled with glass wool and Styrofoam to provide proper insulation.…”

Section: Thermal Conductivity and Viscosity Measurementsmentioning

confidence: 99%

Thermophysical and transient heat transfer characteristics of aqueous SiO₂ nanofluid in energy management applications

Mukherjee

Panda

Mishra

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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The development and implementation of transient heat transfer characteristics of nanofluids in energy management were studied. Ultrasonic-assisted SiO2/water nanofluids with 0.1–1.5 wt. % were prepared using polyvinyl alcohol (PVA) surfactant. The stability of nanofluids was tested and confirmed using zeta potential and light absorbance measurement. Thermophysical properties of nanofluid were investigated at various weight concentrations from 0.1 to 1.5 wt. % in a temperature range of 25–70°C. Transient heat transfer characteristics of nanofluids were examined. Thermophysical properties were enhanced by adding nanoparticles to base fluid. A major enhancement in transient heat transfer characteristics was obtained by applying SiO2/water nanofluids. The convective heat transfer coefficient (CHTC) was increased up to 2.37 times compared to water. The heat absorbance efficiency of the system is increased by a maximum of 24.54%. Finally, a new CHTC correlation has been proposed.

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“…The low thermal conductivity in less stable nanofluids is the result of the low Brownian motion of the nanoparticles compared to stable nanofluids, in which nanoparticles have high surface charge and a high movement of particles. As the Brownian motion of nanoparticles plays a key role in deciding thermal behavior, the thermal conductivity decreases with Brownian [37,38]. Hence while comparing different nanofluids; the stability of the nanofluid also be given prominence rather along with thermal conductivity of the nanoparticles.…”

Section: Figure 10 Comparison Of the Impact Of Stability Contributors And Nanoparticle Materials On Thermal Conductivitymentioning

confidence: 99%

Study of the effect of preparation parameters on thermal conductivity of metal oxide nanofluids using Taguchi method

Hemadri

Mane

2021

Journal of Energy Systems

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The optimization of process parameters of the nanofluid preparation process for maximum stability and high heat transfer is an active and important area of research. In this work, the effect of the surfactant material, surfactant weight, and ultrasonication time are studied on distilled water-based CuO, Fe3O4, and CuO+Fe3O4 nanofluids. Taguchi L9 orthogonal array was used for the design of the experiment and 9 samples were prepared using this array. The effect of each level of process parameter on the thermal conductivity is analyzed by calculating Signal to Noise Ratio (SNR) and optimum levels of these parameters are identified. The crucial role of stability in delivering high thermal conductivity nanofluids as predicted by SNR analysis is further confirmed using Analysis of Variance (ANOVA).

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Enhancing Thermo-Economic Performance of TiO2-Water Nanofluids: An Experimental Investigation

Cited by 12 publications

References 42 publications

Eco-Friendly Water-Based Nanolubricants for Industrial-Scale Hot Steel Rolling

Eco-Friendly Water-Based Nanolubricants for Industrial-Scale Hot Steel Rolling

Thermophysical and transient heat transfer characteristics of aqueous SiO₂ nanofluid in energy management applications

Study of the effect of preparation parameters on thermal conductivity of metal oxide nanofluids using Taguchi method

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Enhancing Thermo-Economic Performance of TiO2-Water Nanofluids: An Experimental Investigation

Cited by 12 publications

References 42 publications

Eco-Friendly Water-Based Nanolubricants for Industrial-Scale Hot Steel Rolling

Eco-Friendly Water-Based Nanolubricants for Industrial-Scale Hot Steel Rolling

Thermophysical and transient heat transfer characteristics of aqueous SiO2 nanofluid in energy management applications

Study of the effect of preparation parameters on thermal conductivity of metal oxide nanofluids using Taguchi method

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Product

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Thermophysical and transient heat transfer characteristics of aqueous SiO₂ nanofluid in energy management applications