Use of the reduced scale model for melanopic illuminance analysis

Authors

DOI:

https://doi.org/10.46421/encac.v17i1.3801

Keywords:

circadian rhythm, reduced-scale model, non-visual effect of light

Abstract

For a long time, lighting was seen only from the perspective of meeting illuminance requirements, energy efficiency, and visual comfort. With the discovery of intrinsically photosensitive retinal ganglion cells (ipRGCs), it has been proven that lighting influences the synchronization of the human circadian rhythm. This corresponds to the 24-hour period of light and darkness during which the body regulates its physiological and behavioral functions. Among the methods that can be used to quantify illuminance in the non-visible spectrum, the use of scaled-down models is included. This article seeks to validate the use of a developed scale model to represent the chosen room as a case study for melanopic illuminance. For this purpose, measurements were taken with a spectrophotometer in both a real environment and a scaled-down model with the same physical and reflectance characteristics. Subsequently, the melanopic and photopic illuminance results from both models were compared and their correlation was verified using R Commander software. The results showed a strong correlation between both models, exceeding 0.9. This highlights the potential use of scaled-down models for studying melanopic illuminance.

Author Biographies

Suelem Schier, Federal University of Santa Catarina

Architect and urban planner from the Federal University of Santa Catarina. Master's student in architecture and urbanism at the Federal University of Santa Catarina (Florianópolis - SC, Brazil).

Raphaela, Federal University of Santa Catarina

    PhD in Civil Engineering from the Federal University of Santa Catarina. Post-doctoral fellow in Civil Engineering at the Federal Technological University of Paraná (Curitiba - PR, Brazil).

Fernando, Federal University of Santa Catarina

Post-Doctorate at the School of Civil and Building Engineering, University of Loughborough, England. Full Professor at the Department of Architecture and Urbanism at the Federal University of Santa Catarina. (Florianópolis - SC, Brazil)

References

AL ENEZI, J. et al. A “melanopic” spectral efficiency function predicts the sensitivity of melanopsin photoreceptors to polychromatic lights. Journal of Biological Rhythms, v. 26, n. 4, p. 314–323, ago. 2011.

ANDERSEN, M.; MARDALJEVIC, J.; LOCKLEY, S. W. A framework for predicting the non-visual effects of daylight-Part I: Photobiology-based model. Lighting Research and Technology. Anais...SAGE Publications Ltd, 2012.

BERSON, D. M.; DUNN, F. A.; TAKAO, M. Phototransduction by retinal ganglion cells that set the circadian clock. Science, v. 295, p. 1070 – 1073, 2002.

CAI, W. et al. The impact of room surface reflectance on corneal illuminance and rule-of-thumb equations for circadian lighting design. Building and Environment, v. 141, p. 288–297, 15 ago. 2018a.

CAJOCHEN, C. et al. Dose-response relationship for light intensity and ocular and electroencephalographic correlates of human alertness. Behavioural Brain Research, v.115, n. 1, p.75-83, 2000.

CASTAÑO, A. G. Avaliação e Calibração de um Céu Artificial para Estudos de Iluminação Natural com Modelos Físicos em Escala Reduzida. Dissertação—Florianópolis: Universidade Federal de Santa Catarina, 2007.

EDWARDS, L.; TORCELLINI, P. A Literature Review of the Effects of Natural Light on Building Occupants. Renewable Energy Lab, Estados Unidos, 2002.

FIGUEIRO, M. G.; NAGARE, R.; PRICE, L. L. A. Non-visual effects of light: How to use light to promote circadian entrainment and elicit alertness. Lighting Research and Technology, v. 50, n. 1, p. 38–62, 1 jan. 2018.

JUNG, B.; INANICI, M. Measuring circadian lighting through high dynamic range photography. Lighting Research and Technology, v. 51, n. 5, p. 742–763, 1 ago. 2019.

KONIS, K. A novel circadian daylight metric for building design and evaluation. Building and Environment, v. 113, p. 22–38, 15 fev. 2017.

KONIS, K. A circadian design assist tool to evaluate daylight access in buildings for human biological lighting needs. Solar Energy, v. 191, p. 449–458, 1 out. 2019.

LUCAS, R. J. et al. Measuring and using light in the melanopsin age. Trends in Neurosciences, v. 37, n.1, p. 1-9, jan. 2014.

MAYHOUB, M. S.; CARTER, D. J. The costs and benefits of using daylight guidance to light office buildings. Building and Environment, v. 46, n. 3, p. 698–710, mar. 2011.

MUKAKA, M. M. Statistics Corner: A guide to appropriate use of Correlation coefficient in medical research. Malawi Medical Journal, v.24, n.3, p. 69-71, 2012.

PEREIRA, F. O. R.; CASTAÑO, A. G. Quão confiáveis podem ser os modelos físicos em escala reduzida para avaliar a iluminação natural em edifícios? Ambiente Construído, v. 12, n. 1, p. 131–147, 2012.

POTOČNIK, J.; KOŠIR, M. Influence of commercial glazing and wall colours on the resulting non-visual daylight conditions of an office. Building and Environment, v. 171, 15 mar. 2020.

REA, M. S. et al. Modelling the spectral sensitivity of the human circadian system. Lighting Research and Technology, v. 44, n. 4, p. 386–396, 2012.

REA, M. S.; FIGUEIRO, M. G. Light as a circadian stimulus for architectural lighting. Lighting Research and Technology, v. 50, n. 4, p. 497–510, 1 jun. 2018.

UPRTEK. United Power Research and Technology. Espectrofotometro MK350S Premium. Taiwan, 2010.

WELL. Circadian Lighting Design. V2, 2022. Disponível em: < https://v2.wellcertified.com/en/wellv2/light/feature/3>. Acesso em: 07 de junho 2022.

WYSZECKI, G.; STILES, W. Color Science: Concepts and Methods, Quantitative Data and Formulae, 2nd Edition. John Wiley and Sons, Nova York, 2000.

YAO, Q. et al. Efficient circadian daylighting: A proposed equation, experimental validation, and the consequent importance of room surface reflectance. Energy and Buildings, v. 210, 1 mar. 2020.

Published

2023-10-26

How to Cite

SCHIER, Suelem; FONSECA, Raphaela Walger da; PEREIRA , Fernando Oscar Ruttkay. Use of the reduced scale model for melanopic illuminance analysis. In: ENCONTRO NACIONAL DE CONFORTO NO AMBIENTE CONSTRUÍDO, 17., 2023. Anais [...]. [S. l.], 2023. p. 1–10. DOI: 10.46421/encac.v17i1.3801. Disponível em: https://eventos.antac.org.br/index.php/encac/article/view/3801. Acesso em: 3 dec. 2024.

Issue

Section

6. Iluminação Natural e Artificial

Most read articles by the same author(s)