Thermophysical properties of graphene nanosheets – Hydrogenated oil based nanofluid for drilling fluid improvements

Chai, Yee Ho; Yusup, Suzana; Chok, Vui Soon; Irawan, Sonny; Singh, Jespal Singh Deol Balbir

doi:10.1016/j.applthermaleng.2017.05.012

Cited by 25 publications

(39 citation statements)

References 30 publications

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“…propylene glycol-water mixtures, by Amiri et al [123] for aqueous nanofluids containing 0.001 and 0.002 wt% of amine-treated graphene quantum dots (A-GQD), by Sarsam et al [132] for 0.025-0.10 wt.% dispersions of triethanolamine-treated graphene nanoplatelets in water or by Ma et al [128] for 0.01% and 0.05% loading of f-GnS in silicone oil, for example. Conversely, nanofluids that yield a nonlinear relation between shear stress and shear rate were also obtained in the literature [62,82,84,85,91,93,107,118,124]. The Newtonian or non-Newtonian behavior strongly depends on the…”

Section: Insert Here Table 6 4 Viscosity Enhancement: Impact Of Base Fluids Temperature and Graphene Derivatives Concentrationmentioning

confidence: 93%

“…They performed measurements at temperatures between 293 and 313 K and showed an increase in viscosity at 293 K from 0.99 cP (water) to 1.31 cP (nanofluid at nanoporous graphene concentration of 0.5 wt%).Additionally, in the case of 0.1 wt% concentration, viscosity decreases from 1.15 cP (at 293 K) to 0.76 cP (313 K). Chai et al[107] used a two-step method to prepare nanofluids based on a hydrogenated oil and containing graphene nanosheets concentrations ranging from 25 to 100 ppm. In addition to the shear thinning behavior obtained for nanofluids at very low shear rates, and the slight shear thickening behavior at higher shear rate between 303 and 323 K, Chai et al found an increase in viscosity and shear stress up to 33% at 303 K and at the highest nanoparticle concentration.…”

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confidence: 99%

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Graphene-based nanofluids: A comprehensive review about rheological behavior and dynamic viscosity

Hamze

Cabaleiro

Estellé

2021

Journal of Molecular Liquids

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Graphene derivatives are promising nanomaterials for producing nanofluids due to their excellent intrinsic characteristics. Among thermophysical profile, and in addition to thermal properties, relevant property to evaluate the potential of graphene-based nanofluids as efficient and reliable heat transfer fluids is viscosity, and rheological behavior in a wider sense. Therefore, the aim of this review paper is to give a comprehensive overview of the current knowledge and results about the rheological properties of graphene-based nanofluids. After a brief description of the most common methods used for fabricating or extracting graphene derivatives, the main steps of graphenebased nanofluids preparation are introduced. Then, literature results on Newtonian/non-Newtonian behavior as well as variations in apparent dynamic viscosity of suspensions containing graphene derivatives are reviewed, analyzing the effects of shear rate, concentration, base fluids and temperature. Such an analysis is performed distinguishing the different types of graphene derivatives, namely graphene oxide, reduced graphene oxide, pristine graphene, graphene quantum dots, functionalized and doped graphene. Also, the impact of base fluid, temperature, concentration and surfactant on viscosity enhancement of graphene-based nanofluids is graphically and newly presented and discussed. In addition, the current models for viscosity prediction or correlation of those nanofluids are detailed. Finally, challenges and future works are summarized.

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Section: Insert Here Table 6 4 Viscosity Enhancement: Impact Of Base Fluids Temperature and Graphene Derivatives Concentrationmentioning

confidence: 93%

mentioning

confidence: 99%

Graphene-based nanofluids: A comprehensive review about rheological behavior and dynamic viscosity

Hamze

Cabaleiro

Estellé

2021

Journal of Molecular Liquids

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“…The findings of this study are compared against our previous experimental work [46,47] where graphene nanosheet and carbon nanotubes nanoparticles were selected. From Figure 7, graphene nanosheets have higher thermal conductivity as compared to carbon nanotube and graphene oxide by a slight margin at 50°C and 100 ppm.…”

Section: Thermal Conductivity Analysismentioning

confidence: 99%

Bio-Based Oil Drilling Fluid Improvements through Carbon- Based Nanoparticle Additives

Chai¹,

Yusup²,

Chok³

et al. 2018

Drilling

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Performance issues of vegetable oil or bio-based oil drilling fluids are generally inferior as compared to synthetic based drilling fluids. This chapter focuses largely on thermal conductivity and rheological properties of bio-based oil drilling fluid as its core issues. Unstable drilling fluids do not only incur in downtime for maintenance, but it indirectly affects production capacity as well. To overcome these issues, nanoparticles acts as additives to improve the thermo-physical traits of bio-based oil drilling fluid. The scope of this chapter focuses on dispersion of graphene oxide at very low concentration, namely 25, 50 and 100 ppm, to improve the thermal conductivity and rheological properties of bio-based oil drilling fluid. The data obtained from thermal conductivity and rheological experimental works were validated with various thermal conductivity and rheological models.

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“…Most of them are focused on the decrease in viscosity with increasing temperature 20 . The literature survey that follows is restricted to the experimental viscosity investigation of graphene‐based and its hybrid nanofluids 23‐43 . The first work related to graphene nanofluid was 23 .…”

Section: Introductionmentioning

confidence: 99%

An experimental viscosity investigation on the use of non‐Newtonian graphene heat transfer nanofluids at below‐ambient temperatures

Sica

Contreras

Filho

et al. 2021

Intl J of Energy Research

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The enhanced thermal conductivity of nanofluids justifies their application to traditional niches of heat transfer fluids. For Newtonian materials, however, viscosity, pressure drop, and ultimately, pumping power, also increase with nanoparticle concentration. A different behavior, though, may be observed with non-Newtonian nanofluids. This possibility motivated the present work, in which aqueous solutions of refrigeration secondary fluid and prime-mover coolant were enriched by graphene nanoparticles (thickness: 0.55-3.74 nm; average length: 5-10 μm). Viscosity variation with shear stress was experimentally investigated for temperatures within (−10 C < T < 25 C). Shear thinning and shear thickening were observed and described in detail by means of flow curves for each fluid sample (base fluid and nanofluids). The patterns for the curve fitting parameters of a modified version of the Herschel-Bulkley equation were analyzed, tabulated, and modeled. Finally, the relative apparent viscosity data were compared with four classical models. HIGHLIGHTS:• Synthesis of graphene non-Newtonian heat transfer nanofluids.• The spectrum of temperatures ranged from -10 C to 25 C.• Shear thinning and shear thickening were observed and described in detail.• Herschel-Bulkley-like equation was observed, parameters patterns were modeled.• Relative apparent viscosity data were compared with four classical models.

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Thermophysical properties of graphene nanosheets – Hydrogenated oil based nanofluid for drilling fluid improvements

Cited by 25 publications

References 30 publications

Graphene-based nanofluids: A comprehensive review about rheological behavior and dynamic viscosity

Graphene-based nanofluids: A comprehensive review about rheological behavior and dynamic viscosity

Bio-Based Oil Drilling Fluid Improvements through Carbon- Based Nanoparticle Additives

An experimental viscosity investigation on the use of non‐Newtonian graphene heat transfer nanofluids at below‐ambient temperatures

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