2026-08-22T20:24:29Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/54922024-05-14T10:06:17Zcom_10259_4393com_10259_5086com_10259_2604col_10259_4394

Granados López, Diego Diez Mediavilla, Montserrat Dieste Velasco, Mª Isabel Suárez García, Andrés Alonso Tristán, Cristina VSC Daylighting Di use illuminance CIE standard sky classification Daylight availability knowledge is the first step for an energetic and visually e cient building and city design. It can be estimated with the Vertical Sky Component (VSC), which is defined as the ratio of the vertical di use illuminance over the unobstructed horizontal di use illuminance, simultaneously measured at the same point. These illuminance magnitudes are obtained from luxmeter measurements but these data are scarce. Alternatively, VSC can be obtained from prior knowledge of the sky illuminance distribution, which can be measured with a sky scanner device or by reference to the CIE (Commission Internationale de L’Éclairage) Standard classification for homogeneous skies. Both approaches are compared in this study. The coherence of the results obtained for the four cardinal orientations are analyzed by applying classical statistical parameters and luxmeter measurements as references for the results. The measurement campaign was completed between September 2016 and January 2019 in Burgos (Spain), as representative case study and specific contribution of this work. It was observed that the VSC values were higher than 100 in many cases: 21.94% for the south- and 33.6% for the east-facing vertical surfaces. The study highlights the good daylighting conditions in Burgos, mainly due to the predominance of clear skies over much of the year. This fact implies high daylight availability that, with e cient city planning and building design, could potentially lead reduction energy consumption of buildings, improvements in visual comfort, and the well-being of occupants. 2020-09-29 2020-09-29 2020-04 info:eu-repo/semantics/article http://hdl.handle.net/10259/5492 10.3390/app10093095 2076-3417 eng https://doi.org/10.3390/app10093095 info:eu-repo/grantAgreement/JCyL/EDU/667/2019 info:eu-repo/grantAgreement/MICINN/RTI2018-098900-B-I00) http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Atribución 4.0 Internacional MDPI