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<p>The importance of hybrid nanofluid lies in its ability to improve thermal performance compared to traditional fluids, making it especially useful for heat exchanger applications. Additionally, the usual water and oil-based fluids face some processing issues. These include only slight improvements in heat transfer, increased pressure drop, long-term stability problems, and effectiveness issues. As a result, these challenges restrict the overall thermal performance of the system. This study aims to improve the thermal performance of heavy-duty heat exchangers (radiators) by using a hybrid nanofluid made of titanium dioxide (TiO<sub>2</sub>) and silicon dioxide (SiO<sub>2</sub>). The nanofluid will have concentrations of 0.03, 0.05, and 0.07 vol% and will be tested at different inlet temperatures ranging from 30 to 90&#xa0;°C, with flow rates changing between 9 and 13 L per minute. The study looks at how well the radiator performs when using different concentrations of (TiO<sub>2</sub>/SiO<sub>2</sub>) hybrid nanofluid. The system operated using a TiO<sub>2</sub>/SiO<sub>2</sub> hybrid nanofluid at a concentration of 0.07 vol% and a flow rate of 13 LPM. It demonstrated excellent thermal performance, with thermal conductivity measured at 0.774 Wm<sup>−1</sup>&#xa0;K<sup>−1</sup>, a heat transfer rate of 6620 W, a heat transfer coefficient of 2187 Wm<sup>−2</sup>&#xa0;K<sup>−1</sup>, and a pressure drop of 96.65&#xa0;kPa. These findings offer a fresh understanding of how low amounts of hybrid nanofluids behave in car cooling systems.</p>

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Exploration and thermal characteristics analysis of hybrid TiO2/SiO2 nanofluids passing through heavy-duty automotive radiators for intensive cooling system

  • 期刊论文

  • 发表日期：

    2025年5月28日

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  • Manzoore Elahi M. Soudagar,
  • Aman Sharma,
  • R. Venkatesh,
  • Nagabhooshanam Nagarajan,
  • Vinayagam Mohanavel,
  • M. Ravichandran,
  • S. Kaliappan,
  • Sami Al Obaid,
  • Sulaiman Ali Alharbi

摘要

The importance of hybrid nanofluid lies in its ability to improve thermal performance compared to traditional fluids, making it especially useful for heat exchanger applications. Additionally, the usual water and oil-based fluids face some processing issues. These include only slight improvements in heat transfer, increased pressure drop, long-term stability problems, and effectiveness issues. As a result, these challenges restrict the overall thermal performance of the system. This study aims to improve the thermal performance of heavy-duty heat exchangers (radiators) by using a hybrid nanofluid made of titanium dioxide (TiO2) and silicon dioxide (SiO2). The nanofluid will have concentrations of 0.03, 0.05, and 0.07 vol% and will be tested at different inlet temperatures ranging from 30 to 90 °C, with flow rates changing between 9 and 13 L per minute. The study looks at how well the radiator performs when using different concentrations of (TiO2/SiO2) hybrid nanofluid. The system operated using a TiO2/SiO2 hybrid nanofluid at a concentration of 0.07 vol% and a flow rate of 13 LPM. It demonstrated excellent thermal performance, with thermal conductivity measured at 0.774 Wm−1 K−1, a heat transfer rate of 6620 W, a heat transfer coefficient of 2187 Wm−2 K−1, and a pressure drop of 96.65 kPa. These findings offer a fresh understanding of how low amounts of hybrid nanofluids behave in car cooling systems.