The effect of TiO2 doped multi-walled carbon nanotubes synthesis on the thermophysical and heat transfer properties of transformer oil: A comprehensive experimental study

• DOI: 10.1016/j.csite.2022.102607
• Publication Date: 2022-11-29T03:30:07Z
• Authors: Hadi Pourpasha; Saeed Zeinali Heris; Mousa Mohammadpou...
• Keywords: Transformer oil (TO); 0202 electrical engineering, electronic engineering, information engineering; Forced convection; 02 engineering and technology; MWCNTs; Breakdown voltage; TA1-2040; Natural convection heat transfer (NCHT); Engineering (General). Civil engineering (General); TiO2 nanoparticles

The study was performed on the impact of adding hydrophobic TiO2 doped multi-walled carbon nanotubes (MWCNTs) heat transfer performance, breakdown voltage (BDV), and thermophysical properties (thermal conductivity coefficient, volumetric specific heat, resistivity, diffusivity, viscosity, viscosity index (VI)) transformer oil (TO). novelty this is use MWCNTs nanoparticles synthesized in TO a comprehensive experimental investigation nanofluids. Experiments were conducted systems with four nanofluids, comprising MWCNTs/TO at concentrations 0.05, 0.1, 0.15, 0.2 wt % input powers 50.5, 75.6, 100, 124 (W) two current regimes, free air flow forced (using blowers). For these purposes, hybrid confirmed using analyses including FTIR, XRD, SEM, EDX. maximum enhancement VI nanofluids wt% equal to 34.86%. improvement natural coefficient (NCHT FCHT), which increased by 23.08% 24.68%, respectively. According results, nanofluid 0.1 had good performance compared other