Enhancing Thermophysical Characteristics and Heat Transfer Potential of TiO2/Water Nanofluid

Mukherjee, Sayantan; Panda, Smita Rani; Mishra, Purna Chandra; Chaudhuri, Paritosh

doi:10.1007/s10765-020-02745-1

Cited by 29 publications

(3 citation statements)

References 57 publications

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“…The thermal conductivity of the lube oil is critical for sustaining the lube oil's characteristics and service life [24]. Temperature and thermal conductivity are found to be strongly connected in many studies, with most liquids seeing a drop in thermal conductivity as temperatures rise [25,28,29]. The thermal conductivity of nanofluids increases as the temperature rises, according to previous research [24,[30][31][32][33].…”

Section: Characterization Of Sio 2 Nanoparticlesmentioning

confidence: 90%

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The Effecting of Various Parameters on the Thermophysical and Rheological Properties of SiO2 Nano-lubricating Oil in Petroleum Refineries

Awad¹,

Sukkar

Jaed³

2022

Journal of Petroleum Research and Studies

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The improvement of the performance of automotive engines necessitated the use of effective lubricating oil. Experimentally explored are the thermophysical characteristics and rheological behavior of Nano-lubricating oil made by mixing SiO2 nanoparticles with stock-60. Nano-lubricant has been prepared with a two-step method using a magnetic stirrer as a first step mixing and an ultrasonic homogenizer. The rheological properties were investigated at various shear rates, temperature, and solid volume percent. This research was carried out on concentrations ranging from 0.1 % to 1.0 %. The results showed elevation in temperature, the dynamic viscosity dropped in all shear rates due to lower SiO2 NP concentrations and that all samples exhibited Newtonian behavior at all temperatures fixed. The thermal conductivity of nano-lubricating oil was tested at various temperatures ranging from 20°C to 50°C. The different solid volume percent of SiO2 NPs were in the range of 0 to 1% maximum enhancement value was achieved at higher temperature with increased volume percent of SiO2 NPs. Other important thermophysical properties of lube oil including flashpoint and pour point were also measured. The results revealed that adding SiO2 NPs to stock-60 at a solid volume percent of 1% will result in a maximum improvement of 12 % in flashpoint over the base oil, while the improvement of pour point was achieved at nano-addition of 0.75% and 1% compared with the base oil was increased from -3°C to -6°C.

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Section: Characterization Of Sio 2 Nanoparticlesmentioning

confidence: 90%

“…The connection between the flashpoint of lubricating oil and the concentration of SiO 2 nanoadditions is noted in Figure (12). The mixing of NPs with lube stock-60 oil has resulted in a change in the flashpoint, which causes it to rise until it reaches a substantial level [29,31,33].…”

Section: Characterization Of Sio 2 Nanoparticlesmentioning

confidence: 98%

The Effecting of Various Parameters on the Thermophysical and Rheological Properties of SiO2 Nano-lubricating Oil in Petroleum Refineries

Awad¹,

Sukkar

Jaed³

2022

Journal of Petroleum Research and Studies

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“…Additional research into the impact of TiO 2 was conducted by Mukherjee et al [4], in which they examined the impact of five different concentrations varying from 1 wt% to 0.01 wt%. They investigated a commercially available lab-grade nanofluid that was then dispersed in water at varying concentrations.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Heat Transfer with Various Aqueous Mono/Hybrid Nanofluids in a Multi-Channel Heat Exchanger

2021

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The use of nanofluids for heat transfer has been examined in recent years as a potential method for augmentation of heat transfer in different systems. Often, the use of nanoparticles in a working fluid does not disrupt the system in significant ways. As a result of this general improvement of a system’s heat transfer capabilities with relatively few detrimental factors, nanofluids and hybrid nanofluids have become an area of considerable research interest. One subcategory of this research area that has been under consideration is the concentration of each of the nanoparticles, leading to either successful augmentation or hindrance. The focus of the current experimental investigation was to examine the resulting impact on heat transfer performance as a result of each nanofluid implemented in an identical three-channel heat exchanger. This work examined the experimental impacts of 0.5 wt% titania (TiO2), 1 wt% titania, a mixture of 0.5 wt% titania and 0.5% silica, and a 0.5 wt% hybrid nanofluid of titania synthetically modified with copper-based nanostructures (Cu + TiO2). The experimental work examined a range of heat flux densities from 3.85 W cm−2 to 7.51 W cm−2, and varying flow rates. Each of the nanoparticles were suspended in distilled water and then mixed using an ultrasonic water bath. The performances of each nanofluid were determined using the local Nusselt number to evaluate the possible thermal enhancement offered by each nanofluid mixture. While the 0.5 wt% Cu + TiO2 hybrid nanofluid did significantly increase performance, the use of a 0.5 wt% TiO2/SiO2 double nanofluid in a three-channel heat exchanger exhibited the greatest performance enhancement, with an average increase of 37.3% as compared to water.

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A CFD Study of [C2mim][CH3SO3]/Al2O3 Ionanofluid Flow and Heat Transfer in Grooved Tubes

et al. 2021

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Enhancing Thermophysical Characteristics and Heat Transfer Potential of TiO2/Water Nanofluid

Cited by 29 publications

References 57 publications

The Effecting of Various Parameters on the Thermophysical and Rheological Properties of SiO2 Nano-lubricating Oil in Petroleum Refineries

The Effecting of Various Parameters on the Thermophysical and Rheological Properties of SiO2 Nano-lubricating Oil in Petroleum Refineries

Experimental Investigation of Heat Transfer with Various Aqueous Mono/Hybrid Nanofluids in a Multi-Channel Heat Exchanger

A CFD Study of [C2mim][CH3SO3]/Al2O3 Ionanofluid Flow and Heat Transfer in Grooved Tubes

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