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Computer Modelling of the Optical Behavior of Homogenizers in High-Flux Solar Furnaces

Author

Listed:
  • José Carlos Garcia Pereira

    (Departamento de Engenharia Química, Instituto Superior Técnico, University of Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal)

  • Kaveh Rahmani

    (IDMEC, Instituto de Engenharia Mecânica, Instituto Superior Técnico, University of Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal)

  • Luís Guerra Rosa

    (IDMEC, Instituto de Engenharia Mecânica, Instituto Superior Técnico, University of Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal)

Abstract

Solar radiation homogenizers are multi-mirror devices that try to reshape the solar radiation distribution coming from a concentrator, so that, after passing through the homogenizer, the light flux becomes as much evenly distributed as possible. The optical behavior of these multi-reflective devices is complex and still ill-understood. The geometry of the concentrator defines the features of the concentrated flux and then the characteristics of a particular homogenizer must be chosen according to the envisaged use. In this work, we developed and used optical ray-tracing software to investigate how the homogenizer’s optical output is affected by the following homogenizer’s characteristics: (i) Number of reflecting surfaces; (ii) total length; (iii) position (relative to focal plane); and (iv) tilt angle (inclination) of reflecting surfaces. The obtained results provide valuable information for the use of these optical devices and may contribute to the development of more efficient strategies for homogenization of concentrated radiation generated by high-flux solar furnaces.

Suggested Citation

  • José Carlos Garcia Pereira & Kaveh Rahmani & Luís Guerra Rosa, 2021. "Computer Modelling of the Optical Behavior of Homogenizers in High-Flux Solar Furnaces," Energies, MDPI, vol. 14(7), pages 1-13, March.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:7:p:1828-:d:523865
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    References listed on IDEAS

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    1. José Carlos Garcia Pereira & José Rodríguez & Jorge Cruz Fernandes & Luís Guerra Rosa, 2020. "Homogeneous Flux Distribution in High-Flux Solar Furnaces," Energies, MDPI, vol. 13(2), pages 1-18, January.
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    Cited by:

    1. Gonçalo Domingos & José Carlos Garcia Pereira & Pedro Alexandre Rodrigues Rosa & José Rodríguez & Luís Guerra Rosa, 2023. "Experimental Validation of Double Paraboloid Reflection for Obtaining Quasi-Homogeneous Distribution of Concentrated Solar Flux," Energies, MDPI, vol. 16(9), pages 1-13, May.

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