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    This study optimized a dome-shaped Fresnel solar concentrator using three segmentation methods. The equal horizontal coordinate division yielded the highest optical efficiency (78.4%) and good manufacturability for solar thermal and photovoltaic applications.

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    Area of Science:

    • Optics
    • Renewable Energy Engineering
    • Materials Science

    Background:

    • Refractive solar concentrator systems require enhanced optical efficiency and angular performance.
    • Dome-shaped Fresnel lenses offer potential for improved solar energy capture.

    Purpose of the Study:

    • To design and analyze a dome-shaped Fresnel concentrator.
    • To optimize the Fresnel surface segmentation for improved optical and angular characteristics.

    Main Methods:

    • Design and simulation of a dome-shaped Fresnel concentrator.
    • Evaluation of three segmentation strategies: equal angle, equal vertical coordinate, and equal horizontal coordinate division.
    • Analysis of optical efficiency, acceptance angle, and manufacturability.

    Main Results:

    • Equal vertical coordinate division provided the widest acceptance angle.
    • Equal horizontal coordinate division achieved the highest optical efficiency (78.4%) and good manufacturability.
    • The optimal design demonstrated an acceptance angle of 1.52°, tracking error of 6°, and working F-number of 0.72.

    Conclusions:

    • The equal horizontal coordinate division is the optimal strategy for the dome-shaped Fresnel concentrator.
    • The optimized concentrator shows high concentration capability, wide angular performance, and structural reliability.
    • This design is promising for future solar thermal and photovoltaic applications.