Theoretical and experimental validation of thermal and heat transfer performance of novel ethylene glycol - Cr2AlC nanofluids. (April 2022)

• Record Type: Journal Article
• Authors: Davis, Deepak; Mackolil, Joby; Mahanthesh, B.; Sunaja Devi, K.R.
• Is Part Of: International communications in heat and mass transfer. Volume 133(2022)
• Publication Date: 2022-04
• Subjects: Nanofluids -- Ethylene glycol -- Cr2AlC MAX phase -- Thermal conductivity -- Functional ceramics -- Modeling of materials; Heat -- Transmission -- Periodicals; Mass transfer -- Periodicals; Chaleur -- Transmission -- Périodiques; Transfert de masse -- Périodiques; Heat -- Transmission; Mass transfer; Periodicals; 621.4022
• DOI: 10.1016/j.icheatmasstransfer.2022.105972
• Languages: English
• ISSNs: 0735-1933

Abstract

Abstract: Synthesizing stable nanofluids with favourable thermal properties that can cater to practical applications is a challenge over the past few years. This paper presents the preparation and analyzes the thermal efficiency of the novel nanofluid prepared by the suspension of nanocrystalline Cr2 AlC MAX phase powder in ethylene glycol (EG). Incorporation of h-BN, MoS 2, Al 2 O 3, and Cr 2 AlC showed a thermal conductivity enhancement at 303 K when compared to EG. Accurate experimental models for the thermal conductivity and the viscosity of EG + Cr 2 AlC nanofluids are estimated. The theoretical analysis of the flow profiles of EG + Cr 2 AlC/Al 2 O 3 /MoS 2 /h-BN nanofluids is carried out with Blasius and Sakiadis flow models. The Cr2 AlC MAX phase possesses both ceramic and metal properties that help these nanofluids to show high heat transfer performance. The results show that 0.50 wt% EG + Cr 2 AlC nanofluid displays maximum improvement in heat transfer performance. There is a substantial rise in the thermal conductivity when both temperature and weight fraction increase. The simulated flow of the nanofluid past a plate indicated superior heat transfer and thermal profiles for the EG + Cr 2 AlC nanofluids. For the flow past a moving plate, the nanofluid possesses less skin friction at the plate, which is favourable for various practical applications. Graphical abstract: Unlabelled Image