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Dr. Mohamed Elsayed Mohamed Emam ALi :: Publications:

Title:
An Investigation of a Novel Structure Polycrystalline Silicon Solar Cell for Concentrated Solar Power
Authors: Ali Radwan, Mohamed Emam, Radwan M Elzoheiry, Mahmoud Ahmed
Year: 2017
Keywords: Polysilicon , Concentrating solar power , Solar cells
Journal: ASME 2017 11th International Conference on Energy Sustainability
Volume: Not Available
Issue: June 26
Pages: V001T08A002; 12 pages
Publisher: American Society of Mechanical Engineers (ASME)
Local/International: International
Paper Link:
Full paper Not Available
Supplementary materials Not Available
Abstract:

To achieve reliable and efficient operation of generic polycrystalline silicon solar cell under concentrated sunlight, a novel structure of the cell layers is proposed along with effective cooling technique using microchannel heat sink (MCHS). In the novel structure, Boron Nitride with the volume fraction of 20%, 40%, and 60% as a filler is incorporated in the Ethylene Vinyl Acetate (EVA) matrix to form a new composite. The new composite is used instead of the conventional EVA layer in the solar cell. Various solar cell structures integrated with MCHS are studied and compared with the conventional structure. To determine the performance of the developed concentrated photovoltaic thermal (CPVT) system, a comprehensive three-dimensional model of the solar cell with heat sink is developed. The model is numerically simulated and validated. Based on the validated results, it is found that the novel structure with EVA-60% BN composite along with aluminum foil back sheet attains 30% increase in the gained solar cell electric power with 10.9 % reduction in the cell temperature compared with the conventional solar cell structure at the same cooling mass flow rate of 50 g/min and concentration ratio of 20. However at CR = 20, Vw = 1m/s and Ta = 30°C a significant damage of the conventional solar cell structure will occurs if no effective cooling technique is used. Moreover, the developed design of solar cell achieves a higher CPVT-system thermal efficiency compared with the conventional one.

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