International Journal of New Practices in Management and Engineering Volume 10 Issue 01 (2021) ISSN: 2250-0839 © IJNPME 2021 12 Thermal Property Investigation in Nanolubricants via Nano- Scaled Particle Addition Dr. Nitin Sherje Head of Mechanical Department, S.K.N.C.O.E. Pune India npsherje@sinhgad.edu Article History Article Submission 19 November 2020 Revised Submission 17 January 2021 Article Accepted 1 March 2021 Article Published 31 st March 2021 Abstract In nanolubricants, the increase in scholarly attention has been attributed to the affirmation that they exhibit enhanced thermo-physical features and that they can also be used in various thermal applications. Some of these applications where they could be incorporated include solar energy harvesting, industrial applications, and heat exchanger effectiveness enhancement. Recently, various approaches have been employed to enhance the coefficient of heat transfer, especially between the fluid contact surfaces and the working fluids. When it comes to conventional fluids of heat transfer, examples being ethylene glycol/water, thermal oils, and water, some studies document that they exhibit limitations. For instance, these fluids exhibit low thermal properties when compared to the solids with which they interact. To respond to this dilemma, there have been efforts in this study to have the fluids’ thermal properties improved via nano-scaled particle addition, causing marked evolutions in the evaluations of the behavior of fluids of heat transfer. Indeed, findings suggest that in base fluids, when the solid particles are suspended, there tends to be an enhancement in the fluid’s energy transmission; hence, notable improvements in material thermal conductivity properties, besides the betterment of material heat transfer characteristics. Keywords: Nanolubricants, Heat Transfer Characteristics I. Introduction Nanolubricants entail nano-scaled particles’ engineered colloidal suspensions in the given base fluids [1]. Generally, the nano-scaled particles come in the form of carbon-based elements, metallic oxides, and metals [2]. Indeed, with nanoparticle introduction, more and more studies have investigated the subject of colloidal dispersion in selected fluids. Here, it has been avowed that upon dispersion in fluids, nanoparticles exhibit some notable degree of stability. Also, they have been documented to be able to steer improvements in the fluids’ thermal properties [3]. The adequacy of nanolubricants that makes them ideal for use as heat transfer fluids has also been linked to their promising features such as reduced pump power (outperforming pure liquids and ensuring that the intensified heat transfer is realized), particle/fluid nanolayer existence, and the particles’ state of Brownian motion [4]. II. Methodology Of importance to note is that even with the aforementioned benefits with which nanolubricants tend to be associated, they have been observed to experience certain application-based limitations. For instance, in the fluid, issues of aggregation and sedimentation continue to be raised even at a time when the nanolubricants’ stability has been improved via the addition of surfactants and the use of magnetic stirring, pH modulation, and ultra-sonication [5]. In addition, given devices, fluid circulation rate