Review Article
A Review on Properties, Opportunities, and Challenges of Transformer Oil-Based Nanofluids
Table 9
Enhancement of thermal conductivity.
| Author/year | Nanofluid | Particle size (nm) | Concentration (vol%) | Enhancement ratio |
| Choi et al./2008 [39] | Cu/transformer oil | 100 | 2.50–7.50 | 1.12–1.43 |
| Choi et al./2008 [39] | Al2O3 (sphere)/pure oil | 13 | 0.5–4.0 | 1.05–1.21 | Al2O3 (fiber)/pure oil | –200 | 0.5 | 1.04 | AlN/pure oil | 50 | 0.5 | 1.08 |
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