Daylighting circadian stimulus in higher education classrooms
DOI:
https://doi.org/10.46421/entac.v20i1.5778Keywords:
Natural lighting, Circadian rhythm, Computational simulation, ALFA, ClassroomAbstract
Daylight is the primary driver of both the visual and circadian systems. The impact of light on the circadian system can be measured using the Equivalent Melanopic Lux (EML) metric, which depends on light intensity and its spectral power density. The ALFA plugin for Rhinoceros allows for the calculation of this metric and provides a relationship between photopic and melanopic light (M/P). Given the importance of the cognitive performance for learning, this research aimed to investigate how daylight in classrooms influences students alertness. Computational simulations were conducted using the ALFA plugin for four classrooms with different orientations. The results showed that the investigated classrooms had insufficient natural light for circadian stimulation with higher availability of circadian stimulus near the windows and insufficiency in areas farther away from them. To ensure satisfactory performance for users, the need to complement the ambient lighting with artificial lighting was recognized.
References
FIGUEIRÓ, M. G., NAGARE, R. PRICE, L. Non-visual effects of light: how to use light to promote circadian entrainment and elicit alertness. Light Res Teschnol, v. 50, n. 1, p. 38-62, 2018. DOI: 10.1177/1477153517721598
MARTAU, B. T.; CHAVES, N. P. Calculando na prática o projeto integrativo: como quantificar o impacto sobre o sistema circadiano humano. LUME Arquitetura, n. 106, p. 22-29, 2020.
LUCAS, R.J.; PEIRSON, S. N.; BERSON, D. M.; BROWN, T. M.; COOPER, H. M.; CZEISLER, C. A.; FIGUEIRO, M. G.; Gamlin, P. D.; LOCKLEY, S. W.; O'HAGAN, J. B.; PRICE, L.L.; PROVENCIO I.; SKENE, D.J.; BRAINARD, G.C. Measuring and using light in the melanopsin age. Trends Neurosci, v.37, n. 1, p. 1-9, jan. 2014. DOI: 10.1016/j.tins.2013.10.004
BROWN, T.M.; BRAINARD, G.C.; CAJOCHEN, C.; CZEISLER, C.A.; HANIFIN, J.P. Recommendations for daytime, evening, and nighttime indoor light exposure to best support physiology, sleep, and wakefulness in healthy adults. PLOS Biology, v. 20, n. 3, 2022. DOI: https://doi.org/10.1371/journal.pbio.3001571
COSTA, J. F. W.; AMORIM, C. N. D.; SILVA, J. C. R. Envidraçamento Eletrocrômico e Avaliação dos Efeitos Visuais e Não Visuais da Luz Natural: Estudos de Simulação para Brasília – Brasil. Journal of Daylighting, V. 11, p. 1-22, 2024. DOI: https://dx.doi.org/10.15627/jd.2024.1
POTOČNIK, J.; KOŠIR, M. Influence of geometrical and optical building parameters on the circadian daylighting of an office. Journal of Building Engineering, v. 42, 2021. DOI: https://doi.org/10.1016/j.jobe.2021.102402
BELLIA, L.; BŁASZCZAK, U.; DIGLIO, Francesca; FRAGLIASSO, Francesca. Assessment of melanopsin-based quantities: Comparison of selected design tools and validation against on-field measurements. Building and Environment, v. 232, 2023. DOI: https://doi.org/10.1016/j.buildenv.2023.110037
LO VERSO, V.R.M.; GIULIANI, F.; CAFFARO, F.; BASILE, F.; PERON, F.; DALLA MORA, T.; BELLIA, L.; FRAGLIASSO, F.; BECCALI, M.; BONOMOLO, M.; NOCERA, F.; COSTANZO, V. Questionnaires and simulations to assess daylighting in Italian university classrooms for IEQ and energy issues. Energy and Buildings, v. 252, 2021. DOI: https://doi.org/10.1016/j.enbuild.2021.111433
RAVN, M.; MACH, G.; HANSEN, E.K.; TRIANTAFYLLIDIS, G. Simulating Physiological Potentials of Daylight Variables in Lighting Design. Sustainability, v. 14, n. 881, 2022. DOI: https://doi.org/10.3390/su14020881
SOUZA, R. V. G. de; PEREIRA, F. O. R. Primeira estação de medição de iluminação natural em território brasileiro: análise dos dados dos dois primeiros anos de funcionamento. Ambiente Construído, v. 4, n. 3, p. 79-94, jul./set. 2004.
IWBI. International WELL Building Institute. WELL v2. Circadian Lighting Design. 2024. Available at: https://v2.wellcertified.com/en/wellv2/light/feature/3. Acesso em: fev. 2024.
ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS - ABNT. NBR 15215-3: Iluminação natural - Parte 3: Procedimentos para avaliação da iluminação natural em ambientes internos. Rio de Janeiro: ABNT, 2024.
SOLEMMA LLC. ALFA Adaptive Lighting for Alertness - A new circadian lighting design software. 2024. Available at: https://www.solemma.com/alfa. Acesso em: 20 abr. 2024.
