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Assessment of Daylighting Strategies in Educational Buildings

Abstract

Daylighting is an important aspect of sustainable building design, particularly in educational buildings where students and teachers spend significant amounts of time indoors. Adequate natural light can improve visual comfort, reduce dependence on artificial lighting, and create a more pleasant learning environment. However, poor daylighting design can result in excessive glare, uneven light distribution, overheating, and insufficient illumination. The effective assessment of daylighting strategies is therefore essential for achieving comfortable and energy-efficient educational environments. This study focuses on the assessment of daylighting strategies in educational buildings. Daylighting involves the controlled use of natural sunlight to illuminate interior spaces through windows, skylights, light shelves, clerestories, and other building openings. The effectiveness of these strategies depends on factors such as building orientation, window size and position, room depth, glazing properties, shading devices, and surrounding buildings. Proper consideration of these factors can help distribute natural light effectively throughout learning spaces. Building orientation plays an important role in determining the amount and quality of daylight entering educational spaces. Appropriate orientation can maximize useful daylight while reducing excessive solar heat gain and glare. Window placement and design are also important because they influence the distribution of daylight within classrooms. The use of shading devices, such as overhangs, louvers, and fins, can control direct sunlight and improve visual comfort while still allowing sufficient natural illumination. Effective daylighting can provide several benefits to educational buildings. Adequate natural light can reduce the need for artificial lighting during daylight hours, thereby lowering electricity consumption and operational costs. It can also improve visual conditions for reading, writing, teaching, and other classroom activities. A well-designed daylighting system can contribute to a healthier and more comfortable learning environment by providing balanced illumination and reducing excessive contrast between bright and dark areas. Despite its benefits, daylighting must be carefully controlled to avoid problems such as glare, excessive brightness, and unwanted heat gain. The effectiveness of a daylighting strategy is influenced by local climatic conditions, building design, classroom orientation, window characteristics, occupancy patterns, and seasonal variations. Therefore, daylighting strategies should be assessed according to the specific requirements of educational spaces and the environmental conditions of the location. This study assesses selected daylighting strategies in educational buildings and examines their effectiveness in improving natural illumination, visual comfort, and energy efficiency. The study is expected to identify appropriate strategies for maximizing useful daylight while minimizing glare and excessive solar heat gain. The findings will provide useful information for architects, engineers, educational planners, and other stakeholders involved in the design and development of sustainable educational buildings. The study may also contribute to the development of learning environments that are comfortable, energy-efficient, and responsive to local climatic conditions.

Keywords: Daylighting, Educational buildings, Natural lighting, Visual comfort, Energy efficiency, Classroom design, Solar shading, Sustainable design, Building orientation.