Palabras clave/ Iluminación natural, comodidad visual, deslumbramiento, muro calado Keywords/ Natural light, visual comfort, glare, openwork wall Recepción/ 1 julio 2015 Aceptación/ 3 septiembre 2015 RESUMEN/ La implementación de muros calados en edificaciones localizadas en lugares con clima cálido es una práctica común, pues resulta ser una estrategia relativamente económica para favorecer la ventilación natural y el control solar. A pesar de los beneficios de la inclusión de la iluminación natural en ambientes educativos, no hay suficientes estudios que caractericen, desde el punto de vista de la comodidad visual, salones de clases con muros calados en fachada. Esta investigación tiene por objetivo revisar el desempeño, en términos de la probabilidad de deslumbramiento y de la admisión de la luz natural, en ambientes educativos hipotéticos con muros calados en fachada y localizados en Cali (lat. 3°26', long.-76°31' y alt. 995 m.s.n.m.), Colombia. Para lograr esto, fueron realizadas simulaciones computacionales haciendo uso del plugin Diva for Rhino. Los resultados evidencian el potencial del uso de superficies perforadas en ambientes educativos en localidades geográficas con clima cálido. ABSTRACT/ Openwork walls are common in buildings located in warm weather settings. It is a relatively cheap strategy to favor natural ventilation and sun control. In spite of the benefits of including natural light in educational facilities, there are only a few studies characterizing classrooms with openwork façade walls from the point of view of visual comfort. This research is aimed at reviewing the performance, in terms of the glare likelihood and the access of natural light, in hypothetical education contexts with openwork façade walls, and located in Cali (lat. 3°26', long.-76°31' and. 995 m.a.s.l.), Colombia. To achieve this, computer simulations with the Diva for Rhino plugin were done. The evidence suggests the potential of using perforated surfaces in educational facilities in geographical locations with hot weather.

The bioclimatic performance of buildings under climate change scenarios has been extensively studied from a thermo-energy perspective but hardly studied at all from the perspective of indoor daylight sufficiency. This shortcoming is related to the invariability of radiation data in the available weather files of future scenarios. This research proposes identifying the impacts that the variability of radiation data in weather files of future scenarios would have on daylight sufficiency in indoor spaces. The methodology includes the adaptation of available weather files and the running of daylight simulations for hypothetical workspaces located in Medellín, Colombia. The results show differences in the Spatial Daylight Autonomy – SDA metric of up to 18% in different future scenarios. In conclusion, the need is outlined to refine predictions of outdoor daylight availability that allow improving daylight performance evaluations under climate change scenarios.

This paper examines the influence of the thermal and lighting performance in classrooms on the cognitive productivity of students attending public schools in the principal three cities of Colombia: Bogota, Medellin and Cali. The methodology used involves the application of cognitive performance tests and thermal and visual perception surveys, along with measurements of climatic parameters in 34 classrooms of 14 schools in 2017 and 2018. The results were analyzed using transversal correlational regressions. Among the conclusions, this study found that the operative temperature turned out to be the most conclusive variable explaining cognitive performance relationships.

The proper consideration of daylight in indoor environments refers to guaranteeing sufficient light levels while minimizing the risks of glare. Currently, The International Organization Standardization-ISO and the International Commission on Illumination-CIE establish that, for classrooms, the proper lighting level oscillates between 300–500 lx. Despite this, there is evidence of differences in the daylighting levels perceived as sufficient. The objective of this article is to identify and to explain the differences in perception of daylighting sufficiency to perform typical reading and writing activities in four cities in Colombia with latitudes that oscillate between 3°25’18”N to 6°15’7”N: Armenia, Cali, Medellin and Manizales. A methodology that included the application of surveys to university students in classrooms was outlined; at the same time workplane illuminance was measured in the workstations and vertical illuminance at the height of the eyes of people. The results showed differences between cities in the proportion of people who perceive certain daylighting level as sufficiently illuminated. A logistic regression model showed that those differences can be explained from the global solar radiation of each city.

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