RT info:eu-repo/semantics/article T1 Evaluation of the vertical sky component without obstructions for daylighting in Burgos, Spain A1 Granados López, Diego A1 Diez Mediavilla, Montserrat A1 Dieste Velasco, Mª Isabel A1 Suárez García, Andrés A1 Alonso Tristán, Cristina K1 VSC K1 daylighting K1 di use illuminance K1 CIE standard sky classification K1 Ingeniería eléctrica K1 Electric engineering AB Daylight availability knowledge is the first step for an energetic and visually e cientbuilding and city design. It can be estimated with the Vertical Sky Component (VSC), which isdefined as the ratio of the vertical di use illuminance over the unobstructed horizontal di useilluminance, simultaneously measured at the same point. These illuminance magnitudes are obtainedfrom luxmeter measurements but these data are scarce. Alternatively, VSC can be obtained fromprior knowledge of the sky illuminance distribution, which can be measured with a sky scannerdevice or by reference to the CIE (Commission Internationale de L’Éclairage) Standard classificationfor homogeneous skies. Both approaches are compared in this study. The coherence of the resultsobtained for the four cardinal orientations are analyzed by applying classical statistical parametersand luxmeter measurements as references for the results. The measurement campaign was completedbetween September 2016 and January 2019 in Burgos (Spain), as representative case study and specificcontribution 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 gooddaylighting conditions in Burgos, mainly due to the predominance of clear skies over much of theyear. 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. PB MDPI YR 2020 FD 2020-04 LK http://hdl.handle.net/10259/5492 UL http://hdl.handle.net/10259/5492 LA eng NO Regional Government of Castilla y León under the “Support Program for Recognized Research Groups of Public Universities of Castilla y León” (ORDEN EDU/667/2019) and the Spanish Ministry of Science, Innovation & Universities under the I+D+i state program “Challenges Research Projects” (Ref. RTI2018-098900-B-I00). Diego Granados López also thankfully acknowledges the economic support from the Junta de Castilla-León (ORDEN EDU/556/2019) DS Repositorio Institucional de la Universidad de Burgos RD 19-abr-2024