Retrofit do revestimento interno de luminárias: com tinta, microesferas e cacos de vidro

• Ano de defesa: 2025
• Autor(a) principal: Budny, Acsiel
• Orientador(a): Menezes, Jacson Weber de
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal do Pampa
• Programa de Pós-Graduação: Mestrado Acadêmico em Engenharia
• Departamento: Campus Alegrete
• País: Brasil
• Palavras-chave em Português: Engenharia; Iluminação; Resíduos de Vidro; Sustentabilidade; Diodos emissores de luz.; Engineering; Lighting; Glass waste; Sustainability; LEDs (Light emitting diodes)
• Área do conhecimento CNPq: ENGENHARIAS
• Link de acesso: https://repositorio.unipampa.edu.br/handle/123456789/10518

The growing demand for sustainable solutions in the lighting sector has driven the development of technologies with higher energy efficiency, with particular emphasis on systems based on light-emitting diodes (LEDs). In parallel, retrofit emerges as a strategy for modernizing outdated luminaires, reusing structures considered obsolete and reducing the improper disposal of these materials. In this context, the presente study proposed the application of retrofit through the replacement of conventional light sources with LEDs, combined with the modification of the internal surface of reflectors. Materials such as white acrylic paint, glass microspheres, and glass shards were incorporated to evaluate their impact on four main parameters: illuminance distribution, reflector surface temperature, illuminated area, and energy consumption. Na experimental approach was adopted, with controlled variation of surface density (25 g/m2, 50 g/m2, and 100 g/m2) and particle diameter (300 μm < d < 425 μm, 180 μm < d < 212 μm, and 90 μm < d < 125 μm). The results showed that the simple application of acrylic paint already provided a more symmetrical illuminance distribution. The addition of optical materials enabled an increase of up to 14.3% in the illuminated área compared to the reference sample, with a distribution pattern close to that of commercial LED luminaires. A reduction in reflector surface temperature was also observed in samples with lower optical material density, indicating improved termal dissipation. In terms of energy consumption, a 12.5% reduction in energy per square meter was achieved compared with the reference sample, demonstrating the feasibility of the proposal as a sustainable retrofit alternative for the reuse and modernization of systems considered outdated.