Evaluation of Visual and Nonvisual Levels of Daylight from Spectral Power Distributions Considering Orientation and Seasonality

Ezpeleta, Silvia ; Orduna-Hospital, Elvira (Universidad de Zaragoza) ; Aporta, Justiniano (Universidad de Zaragoza) ; Luesma, María José (Universidad de Zaragoza) ; Pinilla, Isabel (Universidad de Zaragoza) ; Sánchez-Cano, Ana (Universidad de Zaragoza)

Resumen: The evaluation of both visual and nonvisual effects from the spectral power distribution (SPD) of outdoor light is critical in lighting design. The dome-light SPD characteristically changes continuously depending on the seasonality, orientation, altitude of the sun or hour of the day. Traditional photopic parameters, such as the illuminance, luminance or correlated colour temperature (CCT), have been widely studied, but presently, there is no melanopic measurement or evaluation method. This article discusses the processes involved in establishing a simple method to determine the SPD of daylight and solar radiation over the skydome in a location to accurately account for the effects of both photopic and circadian levels around a location. Once per month for one year, natural daylight was spectrally measured in the city of Zaragoza (Spain); radiometric and photometric characteristics were analysed by season; and circadian effects were calculated in terms of standard parameters described by the Commission International de l\u2019Eclairage (CIE), factors recommended by normative and scientific backgrounds. Finally, we suggest that the best parameter is the melanopic versus photopic irradiance ratio, which achieves reliable results at simplifying and correlating calculations.

Idioma: Inglés

DOI: 10.3390/app11135996

Año: 2021

Publicado en: Applied Sciences (Switzerland) 11, 13 (2021), 5996 [19 pp]
ISSN: 2076-3417

Factor impacto JCR: 2.838 (2021)

Categ. JCR: ENGINEERING, MULTIDISCIPLINARY rank: 39 / 92 = 0.424 (2021) - Q2 - T2
Categ. JCR: PHYSICS, APPLIED rank: 76 / 161 = 0.472 (2021) - Q2 - T2
Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 218 / 345 = 0.632 (2021) - Q3 - T2
Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 100 / 180 = 0.556 (2021) - Q3 - T2

Factor impacto CITESCORE: 3.7 - Engineering (Q2) - Materials Science (Q2) - Chemical Engineering (Q2) - Computer Science (Q2) - Physics and Astronomy (Q2)

Factor impacto SCIMAGO: 0.507 - Engineering (miscellaneous) (Q2) - Computer Science Applications (Q2) - Process Chemistry and Technology (Q2) - Materials Science (miscellaneous) (Q2) - Fluid Flow and Transfer Processes (Q2)

Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/PID2019-107058RB-I00

Tipo y forma: Article (Published version)

Área (Departamento): Area Anatom.Embriol.Humana (Dpto. Anatom.Histolog.Humanas)
Área (Departamento): Área Oftalmología (Dpto. Cirugía)
Área (Departamento): Área Óptica (Dpto. Física Aplicada)