Potencial circadiano da iluminação artificial no retrofit de sala de aula universitária

Larissa Arêdes Monteiro; Ludmila Cardoso Fagundes Mendes; Hugo de Araújo e Silva; Gabriela Souza Podboi Adachi; Roberta Vieira Gonçalves de Souza

doi:10.46421/entac.v20i1.5848

Analysis of circadian light in the retrofit of artificial lighting in a university building

Authors

Larissa Arêdes Monteiro Universidade Federal de Minas Gerais https://orcid.org/0000-0002-5196-3566 http://lattes.cnpq.br/3621654771799762
Ludmila Cardoso Fagundes Mendes Universidade Federal de Minas Gerais https://orcid.org/0000-0002-7751-2069 http://lattes.cnpq.br/3223139114118216
Hugo de Araújo e Silva Universidade Federal de Minas Gerais http://lattes.cnpq.br/1650142007097396
Gabriela Souza Podboi Adachi Universidade Federal de Minas Gerais https://orcid.org/0009-0009-2105-6592 http://lattes.cnpq.br/0730751174385052
Roberta Vieira Gonçalves de Souza Universidade Federal de Minas Gerais https://orcid.org/0000-0003-0036-961X http://lattes.cnpq.br/8006209271320989

DOI:

https://doi.org/10.46421/entac.v20i1.5848

Keywords:

Artificial lighting, Circadian rhythm, Circadian light, Computational simulation, ALFA

Abstract

The discovery of intrinsically photosensitive retinal ganglion cells (ipRGC) has confirmed the impact of light on the circadian rhythm and alertness levels in humans. This discovery has led to the development of metrics to assess the non-visual effects of light. The WELL Certification, in its "Circadian Lighting Design" topic, states that a minimum 275 Equivalent Melanopic Lux (EML) should be achieved for at least 4 hours at workstations during the day, with electric lighting being permissible to meet this metric. The objective of this study was to analyze the retrofit design of the artificial lighting system in a higher education classroom in terms of its circadian potential. This design aimed to improve visual comfort, energy efficiency, and compliance with NBR ISO/CIE 8595:2013, without considering the circadian potential of light during its development. Therefore, computational simulation was conducted using the ALFA tool to analyze the melanopic/photopic ratio (M/P) and the EML metric. The M/P ratio yielded neutral results for all simulated conditions. None of the tested luminaires achieved 275 EML in 100% of the viewing directions.

Author Biographies

Larissa Arêdes Monteiro, Universidade Federal de Minas Gerais

Master’s degree holder and doctoral candidate in the Built Environment and Sustainable Heritage Program from the Federal University of Minas Gerais (Belo Horizonte - MG, Brasil)

Ludmila Cardoso Fagundes Mendes, Universidade Federal de Minas Gerais

Master and PhD student in Built Environment and Sustainable Heritage from the Universidade Federal de Minas Gerais (Belo Horizonte - MG, Brasil).

Hugo de Araújo e Silva, Universidade Federal de Minas Gerais

Studying Architecture and Urbanism at the Universidade Federal de Minas Gerais (Belo Horizonte - MG, Brasil).

Gabriela Souza Podboi Adachi, Universidade Federal de Minas Gerais

Studying Architecture and Urbanism at the School of Architecture of the Universidade Federal de Minas Gerais (Belo Horizonte - MG, Brasil).

Roberta Vieira Gonçalves de Souza, Universidade Federal de Minas Gerais

PhD in Civil Engineering from the Federal University of Santa Catarina. Associate Professor at the School of Architecture of the Federal University of Minas Gerais (Belo Horizonte - MG, Brazil).

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Published

2024-10-07

How to Cite

MONTEIRO, Larissa Arêdes; MENDES, Ludmila Cardoso Fagundes; DE ARAÚJO E SILVA, Hugo; ADACHI, Gabriela Souza Podboi; SOUZA, Roberta Vieira Gonçalves de. Analysis of circadian light in the retrofit of artificial lighting in a university building. In: NATIONAL MEETING OF BUILT ENVIRONMENT TECHNOLOGY, 20., 2024. Anais [...]. Porto Alegre: ANTAC, 2024. p. 1–11. DOI: 10.46421/entac.v20i1.5848. Disponível em: https://eventos.antac.org.br/index.php/entac/article/view/5848. Acesso em: 23 nov. 2024.

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Issue

Vol. 20 (2024): XX ENCONTRO NACIONAL DE TECNOLOGIA DO AMBIENTE CONSTRUÍDO

Section

Conforto Ambiental e Eficiência Energética

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