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Simulation and Analysis of Floodlighting Based on 3D Computer Graphics

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  • Rafał Krupiński

    (Lighting Technology Division, Electrical Power Engineering Institute, Warsaw University of Technology, 75 Koszykowa St., 00-662 Warsaw, Poland)

Abstract

The paper presents the opportunities to apply computer graphics in an object floodlighting design process and in an analysis of object illumination. The course of object floodlighting design has been defined based on a virtual three-dimensional geometric model. The problems related to carrying out the analysis of lighting, calculating the average illuminance, luminance levels and determining the illuminated object surface area are also described. These parameters are directly tied with the calculations of the Floodlighting Utilisation Factor, and therefore, with the energy efficiency of the design as well as the aspects of light pollution of the natural environment. The paper shows how high an impact of the geometric model of the object has on the accuracy of photometric calculations. Very often the model contains the components that should not be taken into account in the photometric calculations. The research on what influence the purity of the geometric mesh of the illuminated object has on the obtained results is presented. It shows that the errors can be significant, but it is possible to optimise the 3D object model appropriately in order to receive the precise results. For the example object presented in this paper, removing the planes that do not constitute its external surface has caused a two-fold increase in the average illuminance and average luminance. This is dangerous because a designer who wants to achieve a specific average luminance level in their design without optimizing the model will obtain the luminance values that will actually be much higher.

Suggested Citation

  • Rafał Krupiński, 2021. "Simulation and Analysis of Floodlighting Based on 3D Computer Graphics," Energies, MDPI, vol. 14(4), pages 1-17, February.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:4:p:1042-:d:500418
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    References listed on IDEAS

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    1. Baloch, Ashfaque Ahmed & Shaikh, Pervez Hameed & Shaikh, Faheemullah & Leghari, Zohaib Hussain & Mirjat, Nayyar Hussain & Uqaili, Muhammad Aslam, 2018. "Simulation tools application for artificial lighting in buildings," Renewable and Sustainable Energy Reviews, Elsevier, vol. 82(P3), pages 3007-3026.
    2. Piotr Pracki & Rafał Krupiński, 2021. "Brightness and Uniformity Perception of Virtual Corridor with Artificial Lighting Systems," Energies, MDPI, vol. 14(2), pages 1-32, January.
    3. Pedro Luengo, 2020. "Sustainable Illumination for Baroque Paintings with Historical Context Considerations," Sustainability, MDPI, vol. 12(20), pages 1-11, October.
    4. Lodovica Valetti & Francesca Floris & Anna Pellegrino, 2021. "Renovation of Public Lighting Systems in Cultural Landscapes: Lighting and Energy Performance and Their Impact on Nightscapes," Energies, MDPI, vol. 14(2), pages 1-25, January.
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