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<p>Photovoltaic thermal (PVT) systems combine photovoltaic (PV) and thermal technologies into a single integrated system, offering a new approach to capturing solar energy. Unlike traditional PV systems, which primarily convert sunlight into electricity and operate less efficiently due to higher panel temperatures, PVT systems produce both electricity and useful heat. They achieve this by reducing the temperature of the PV panel, leading to increased energy output and efficiency. In this investigation, the PVT system integrated with a spiral coil-type water-cooled circuit featured with 0.3 volume percentage concentration of alumina (Al<sub>2</sub>O<sub>3</sub>)-silicon dioxide (SiO<sub>2</sub>) hybrid nanofluid (50:50) ratios to minimize the panel temperature and enhance the efficiency of the PVT system. The nanofluids like Al<sub>2</sub>O<sub>3</sub>, SiO<sub>2</sub>, and a combination of Al<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub> are prepared through the water in ratios of 1:10 through an ultrasonification process. Based on experimentation, the temperature profile of the PV panel temperature and working fluid heat gain, energy gain, electrical efficiency, and thermal efficiency of the proposed PVT system functioned by nanofluid results are related to water fluid. The excellence of hybrid nanofluid composed of Al<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub> facilitates peak panel temperature (45.1&#xa0;°C), better heat gain outlet temperature (84.5&#xa0;°C), energy gain (435.7&#xa0;W), and average electrical and thermal efficiency of about 24.5% and 57.9%, respectively.</p>

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Alumina-silicon dioxide hybrid nanofluid action on functional characteristics of photovoltaic thermal collector featured with spiral coil

  • 期刊论文

  • 发表日期：

    2025年1月17日

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  • R. Venkatesh,
  • Ravindra Pratap Singh,
  • N. Naga Bhooshanam,
  • Vinayagam Mohanavel,
  • K. Karthik,
  • Manikandan Ayyar,
  • Manickam Ravichandran,
  • Manzoore Elahi M. Soudagar,
  • A. H. Seikh

摘要

Photovoltaic thermal (PVT) systems combine photovoltaic (PV) and thermal technologies into a single integrated system, offering a new approach to capturing solar energy. Unlike traditional PV systems, which primarily convert sunlight into electricity and operate less efficiently due to higher panel temperatures, PVT systems produce both electricity and useful heat. They achieve this by reducing the temperature of the PV panel, leading to increased energy output and efficiency. In this investigation, the PVT system integrated with a spiral coil-type water-cooled circuit featured with 0.3 volume percentage concentration of alumina (Al2O3)-silicon dioxide (SiO2) hybrid nanofluid (50:50) ratios to minimize the panel temperature and enhance the efficiency of the PVT system. The nanofluids like Al2O3, SiO2, and a combination of Al2O3-SiO2 are prepared through the water in ratios of 1:10 through an ultrasonification process. Based on experimentation, the temperature profile of the PV panel temperature and working fluid heat gain, energy gain, electrical efficiency, and thermal efficiency of the proposed PVT system functioned by nanofluid results are related to water fluid. The excellence of hybrid nanofluid composed of Al2O3-SiO2 facilitates peak panel temperature (45.1 °C), better heat gain outlet temperature (84.5 °C), energy gain (435.7 W), and average electrical and thermal efficiency of about 24.5% and 57.9%, respectively.