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Article Dans Une Revue Case Studies in Thermal Engineering Année : 2022

Performance enhancement of concentrated photovoltaic systems CPVS using a nanofluid optical filter

Résumé

The exploitation of solar energy using hybrid photovoltaic/thermal (PVT) system can represent a viable choice for the rising energy demand. Due to the wide range of PVT applications, many designs have been developed to improve the solar system global performance by cooling PV cells. The proposed system offers a practical heat gain in addition to the electrical efficiency enhancement. The integration of optical water filters (OWF) in photovoltaic systems could be an advantageous solution for their performance improvement. In this work, three different optical water filter models are evaluated using Cinematic fluid dynamics CFD modeling and their effect on the global system operating is discussed. Three shapes of OWF models are considered. Model (I) is an OWF under the PV cell. Model II is an OWF which passes over and under PV cells with separated inputs. Model III consists of a double pass mode OWF. Results showed that the maximum photovoltaic efficiency is corresponding to model (III) and reaches 12.08% at 14 h. The paper highlighted the different impacts associated with different OWF models. The results showed a significant increase in water outlet temperature. Consequently, an enhancement of the PVT system thermal efficiency is achieved. Finally, various water-based nanofluid (Al2O3, Cu, Ag, Au) optical filters are elucidated. The optimal photovoltaic performance is obtained by the water-Au nanofluid which allowed an electrical efficiency varying between 2% and 10%. Nanofluid filters have thus been shown to improve the performance of the CPVS concentrated photovoltaic system, not only because of the thermodynamic properties but also as a spectrally separated cooling system.
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Dates et versions

hal-04061592 , version 1 (07-04-2023)

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Afef Jannen, Monia Chaabane, Hatem Mhiri, Philippe Bournot. Performance enhancement of concentrated photovoltaic systems CPVS using a nanofluid optical filter. Case Studies in Thermal Engineering, 2022, 35, pp.102081. ⟨10.1016/j.csite.2022.102081⟩. ⟨hal-04061592⟩
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