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Experimental investigations on unglazed photovoltaic-thermal (PVT) system using water and nanofluid cooling medium

Author

Listed:
  • Menon, Govind S.
  • Murali, S.
  • Elias, Jacob
  • Aniesrani Delfiya, D.S.
  • Alfiya, P.V.
  • Samuel, Manoj P.

Abstract

The electrical and thermal performance of an unglazed photovoltaic thermal (PVT) system integrated with a serpentine coil configured sheet and tube thermal absorber setup was evaluated using water and copper oxide-based nanofluid. An uncooled PVT system reached a maximum panel temperature of 68.4 °C at noon and obtained an average electrical efficiency of 12.98%. Water and nanofluid cooling of the PVT system reduced the panel temperature by 15 °C and 23.7 °C at noontime, respectively. Compared to the uncooled PVT system, the average electrical efficiency of water and nanofluid cooled PVT system increased by 12.32% and 35.67% to obtain 14.58% and 17.61%, respectively. The thermal efficiency of the nanofluid cooled PVT system (71.17%) was significantly higher than water cooling (58.77%) due to maximum heat absorption by nanoparticles. It was also observed that the overall efficiency of the nanofluid cooled PVT system was 21% higher than the water-cooled system. Also, obtained the highest primary energy-saving efficiency for the nanofluid cooled PVT system.

Suggested Citation

  • Menon, Govind S. & Murali, S. & Elias, Jacob & Aniesrani Delfiya, D.S. & Alfiya, P.V. & Samuel, Manoj P., 2022. "Experimental investigations on unglazed photovoltaic-thermal (PVT) system using water and nanofluid cooling medium," Renewable Energy, Elsevier, vol. 188(C), pages 986-996.
    • Handle: RePEc:eee:renene:v:188:y:2022:i:c:p:986-996
    DOI: 10.1016/j.renene.2022.02.080
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    References listed on IDEAS

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