PERFORMANCE ENHANCEMENT OF FLAT PLATE SOLAR PVT COLLECTOR USING ZN-ZNO/WATER HYBRID NANOFLUID

• Datum: 2025
• Hauptverfasser: Sakthivel , K., Dhanushkodi , S., Sudhakar, K., Balu, P., Ivanchuk , V.
• Format: Artikel
• Sprache: Englisch
• Veröffentlicht: Institute of Renewable Energy National Academy of Sciences of Ukraine 2025
• Schlagworte: Solar flat plate collector; Thermo physical properties; Hybrid nanofluid; Energy efficiency; Exergy efficiency.
• Online Zugang: https://ve.org.ua/index.php/journal/article/view/579
• Назва журналу: Vidnovluvana energetika

Providing an analytical examination of the solar flat plate collector (SFPC) is the goal of this work. Using Zn/water, ZnO/water nanofluids, and Zn-ZnO/water hybrid nanofluid. This study compares various mass flow rates and concentrations of nanoparticles. Heat transfer, energy and exergy efficiency, and pressure drop characteristics of SFPC operation on these nanofluids are investigated. The addition of Zn/water nanofluid 16.71%, ZnO/water nanofluid 16.36%, and Zn-ZnO/water hybrid naofluid 18.52% nanoparticles enhances the working fluid's thermal conductivity. Gain in heat is improved with use of Nanofluids Zn/water nanofluid 1.02%, ZnO/water nanofluid 0.90%, Zn-ZnO/water hybrid nanofluid 2.15%. Efficiency improvements observed in SFPC Zn/water nanofluid: 0.93%, ZnO/water nanofluid 1.05%, Zn-ZnO/water hybrid nanofluid: 2.23%. The increase in pumping power required for the nanofluids: Zn/water nanofluid 3.08%, ZnO/water nanofluid 2.38%, Zn-ZnO/water hybrid nanofluid: 2.918%. Improvements in energy efficiency as per exergy analysis: Zn/water nanofluid 2.32%, ZnO/water nanofluid 2.18%, Zn-ZnO/water hybrid nanofluid 2.60%. In solar flat plate collectors, hybrid nanofluid Zn-ZnO/water significantly improves efficiency. The hybrid nanofluid exhibits the highest thermal conductivity and the most substantial improvement in collector efficiency and usable heat gain among the tested fluids. Additionally, despite a slight increase in pumping power requirements, the overall energy and exergy performance enhancements make hybrid nanofluids suitable for SFPC applications. These findings suggest that integrating hybrid nanofluids in SFPCs can lead to more efficient solar energy systems, potentially contributing to better energy management and sustainability. Further research could explore optimizing nanoparticle concentration and flow rates to maximize these benefits while managing pumping power requirements.