Experimental investigation of photovoltaic performance with compound parabolic solar concentrator and fluid spectral filter

Spectral splitting technology can prevent a photovoltaic cell (PV) overheating ability and efficiency loss. The solar spectrum is split into two portions using this technology: the first produces electricity, while the second generates heat. The present research offers the design and performance eva...

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Veröffentlicht in:Energy (Oxford) 2023-09, Vol.278, p.127848, Article 127848
Hauptverfasser: Elharoun, O., Tawfik, M., El-Sharkawy, Ibrahim I., Zeidan, E.
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Sprache:eng
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Zusammenfassung:Spectral splitting technology can prevent a photovoltaic cell (PV) overheating ability and efficiency loss. The solar spectrum is split into two portions using this technology: the first produces electricity, while the second generates heat. The present research offers the design and performance evaluation of a novel PV-thermal (PV/T) system based on a compound parabolic concentrator (CPC) and a selective absorptive fluid-based optical filter. Different experiments are conducted to indicate the impact of 1, 3, and 5 cm air gaps between the optical filter and PV on the system's average outputs. In addition, the impact of tilting the solar concentrator on the system's performance was also investigated. Finally, a simulation of the cell's electrical performance was produced. Experimental findings demonstrated that all CPC-PV systems with an optical filter have a greater electrical efficiency of about 17% compared to 13.1% and 7.1% for no-filter CPC-PV systems and bare PV cells, respectively. The 3-cm air gap case also demonstrated the most significant electrical, thermal, and overall efficiency improvements, with average values of 17.1, 21.0, and 32.8%, respectively. Additionally, the inclined position of the CPC outperforms the horizontal position. Theoretical results, in terms of electrical performance, supported the experimental findings. [Display omitted] •Spectral splitting technology prevents solar cells from overheating.•The ideal optical filter should block solar radiation below the silicon band gap.•PV/T systems with a liquid-based optical filter have better electrical efficiency.•An air gap between the PV cell and the optical filter is recommended.
ISSN:0360-5442
DOI:10.1016/j.energy.2023.127848