Annual analysis of  glare caused by daylight in University classrooms

Authors

DOI:

https://doi.org/10.11606/gtp.v19i2.216228

Keywords:

Daylight, Glare, NBR 15215, Computer simulation

Abstract

The consideration of the daylight variability and the user's visual direction in glare analyses are lacking in current studies. The present study aimed then to analyze glare occurrence in university classrooms, taking into account these variables, and to evaluate mitigation strategies to the occurrence of visual discomfort using as the object of study the Center for Didactic Activities of Exact Sciences 3, UFMG. Simulation of natural light based on climate was performed using the ClimateStudio plugin for Rhinoceros, considering the perspectives of both students and teachers. The analysis was conducted as required by regulations, both with and without a film over the glass. Critical obscuration was considered when Spatial Disturbing Glare (sDG) ≥ 0.38 for 5% of the time, in at least 5% of the views, and covering 25% of the floor area. Despite finding that the film could control glare, new systems were proposed to enhance visual quality. In the case of glass with a film and closed windows, sDG was found to be zero. However, with windows open, sDG was up to 6.6%, indicating that the occurrence of obscuration in real-life usage may be higher than normatively indicated. New devices were found to reduce the probability of glare from 68% to 98%, while preserving the view to the outside. It is considered crucial to annually observe the occurrence of obscuration and the variability of visual direction for a thorough understanding of naturally lit space dynamics, providing analyses to support the design of these spaces with higher quality.

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Author Biographies

  • Larissa Arêdes Monteiro, Universidade Federal de Minas Gerais

    Architect and Urban Planner from the Federal University de Ouro Preto (UFOP). Currently pursuing a Ph.D. and holding a Master's degree in Built Environment and Sustainable Heritage from the School of Architecture and Urbanism at the Federal University de Minas Gerais (UFMG).

  • Roberta Vieira Gonçalves de Souza, Universidade Federal de Minas Gerais

    Architect and Urban Planner from the Federal University of Minas Gerais (UFMG). Ph.D. in Civil Engineering from UFSC. Associate Professor at the School of Architecture of UFMG. Coordinator of the Environmental Comfort and Energy Efficiency Laboratory at the School of Architecture of UFMG.

  • Maria Luiza Almeida Cunha de Castro, Universidade Federal de Minas Gerais

    Architect and Urban Planner from the Federal University of Minas Gerais (UFMG). Master's degree in History and Theory of Architecture and Urbanism from UFMG, and a Ph.D. in Socio-environmental Sciences from the High Studies Center of the Amazon at the Federal University of Pará (UFPA). Associate Professor at the School of Architecture of the Federal University of Minas Gerais.

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Published

2024-08-21

Issue

Vol. 19 No. 2 (2024)

Section

Papers

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Copyright (c) 2024 Larissa Arêdes Monteiro, Roberta Vieira Gonçalves de Souza, Maria Luiza Almeida Cunha de Castro

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How to Cite

MONTEIRO, Larissa Arêdes; SOUZA, Roberta Vieira Gonçalves de; CASTRO, Maria Luiza Almeida Cunha de. Annual analysis of  glare caused by daylight in University classrooms. Gestão & Tecnologia de Projetos (Design Management and Technology), São Carlos, v. 19, n. 2, p. 201–220, 2024. DOI: 10.11606/gtp.v19i2.216228. Disponível em: https://revistas.usp.br/gestaodeprojetos/article/view/216228.. Acesso em: 29 jan. 2025.