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Daylighting design strategies for visual comfort in classrooms

Universidad del Bío-Bío

 
Autor Piderit Moreno, María B. -- mpiderit@ubiobio.cl
 
Título Daylighting design strategies for visual comfort in classrooms
 
Fecha 2011
 
Descripción Daylighting has taken on an important role in sustainable architecture, since it has a major impact on the energy efficiency of a building allowing, first, to reduce the load on artificial lighting and, at the same time, to reduce the internal gains of the buildings. It is important to point out that it also has a positive effect on human health, wellbeing, visual comfort and performance. In schools, it has been proven that daylighting plays an important role in the learning process and the behavior of the students. The objective of this thesis is to define daylight criteria for the development of daylighting design strategies for classrooms, with the purpose of ensuring the visual comfort of the students. The specific objectives are: first, defining the standards for the application of the criteria, based on a dynamic daylight metric considering weather data, the different types of skies, seasons of the year and times of the day; second, conceiving, verifying and demonstrating the effectiveness of the developed strategies; and, finally, creating a consultation tool, that serves as a reference for classroom design, allowing for the understanding of light distribution and visual comfort conditions of the students, in a fast and easy way. A new methodology for the conception of daylighting design strategies of classrooms was obtained, based on four criteria related to visual comfort; these are: the amount of daylighting, daylighting uniformity, presence of glare risk in the field of view and sunlight penetration in the classrooms. Given the dynamics and variability of the light, this is evaluated through new dynamic simulation methods, which take into account the amount of daily and seasonal variations of daylight, combined with weather data. The evaluation of these criteria, in classrooms, was determined by RADIANCE simulation, where the values are plotted in the temporal and spatial maps in order to evaluate daylight and visual confort throughout the year. For these new criteria, two acceptance levels were stated: the adequate one, for all that falls within the expectations and that results in a good design; and the optimal one, for all that provides a high luminous quality environment using daylight effectively. We have used as case study in the application and verification of this methodology, five typologies with different localized strategies in the city of Concepción, Chile. After carrying out the study, we can conclude that the new proposed methodology can be applied to other locations and types of buildings deeming necessary, eventually, to adapt the expected objectives to the different criteria. A daylight design that complies with the criteria, methods and standards defined in this thesis ensures a high daylight performance and a well daylit environment.
 
Tema ARQUITECTURA SUSTENTABLE
SALAS DE CLASES-DISEÑO-ASPECTOS AMBIENTALES
LUZ EN ARQUITECTURA
 
Publicador Universidad del Bío-Bío. Programa Cybertesis
 
Formato text/xml
 
Idioma es
 
Identificador (URI) http://cybertesis.ubiobio.cl/tesis/2011/piderit_m/html/index-frames.html