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<p>Augmentation of heat transfer characteristics of the fluids with the addition of higher thermal conductivity elements is limited for lower volume fractions due to sedimentation issues. The advent of developing hybrid nanofluids by inter mixing different types of nano particles to achieve higher properties within the permissible limit. The study is aimed to investigate the influence of Al<sub>2</sub>O<sub>3</sub>- TiO<sub>2</sub> nanoparticles mixing ratio over the thermo physical and rheological properties of the hybrid nanofluids. Different proportions of the Al<sub>2</sub>O<sub>3</sub>, TiO<sub>2</sub> nanoparticles are mixed into DI water and ultra sonication is applied to achieve stability during the investigation. The properties such as thermal conductivity, viscosity, pH, density and specific heat are measured within the temperature range of 30–70&#xa0;°C.Significant enhancement is observed in the investigated properties for developed Al<sub>2</sub>O<sub>3</sub>: TiO<sub>2</sub> proportions compared to the base fluid and the 80:20 is found as the best with optimal enhancement in the properties for natural convection heat transfer.</p>

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Experimental Investigations on Dispersion Ratio of Al2O3-TiO2 Over the Properties of Hybrid Nanofluids

  • 期刊论文

  • 发表日期：

    2026年2月14日

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  • Ravi Kiran Mudidana,
  • Vijay Miditana,
  • V. Rambabu

摘要

Augmentation of heat transfer characteristics of the fluids with the addition of higher thermal conductivity elements is limited for lower volume fractions due to sedimentation issues. The advent of developing hybrid nanofluids by inter mixing different types of nano particles to achieve higher properties within the permissible limit. The study is aimed to investigate the influence of Al2O3- TiO2 nanoparticles mixing ratio over the thermo physical and rheological properties of the hybrid nanofluids. Different proportions of the Al2O3, TiO2 nanoparticles are mixed into DI water and ultra sonication is applied to achieve stability during the investigation. The properties such as thermal conductivity, viscosity, pH, density and specific heat are measured within the temperature range of 30–70 °C.Significant enhancement is observed in the investigated properties for developed Al2O3: TiO2 proportions compared to the base fluid and the 80:20 is found as the best with optimal enhancement in the properties for natural convection heat transfer.