DAYLIGHT EVALUATION IN A ROOM PROTOTYPE WITH A TENSILE FABRIC KINETIC FAÇADE

• Main Author: Larosa
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/68376
• Institution: Institut Teknologi Bandung

Adaptive shading is an interactive shading system that is able to adjust the facade openings in buildings based on the daylight level. The use of adaptive shading and Indonesia's location on the equator can provide more daylighting into the building throughout the year. Daylighting supports the productivity and comfort of building occupants, and also saves the building's energy use. However, excessive direct sunlight entering the building may cause glare for building occupants. Daylight evalution was carried out in a 1 m3 room prototype with a tensile fabric kinetic facade in order to obtain the optimal daylighting level based on the LEED v4 standards, namely sDA300/50% minimum 55%, ASE1000,250 maximum 20%, and aUDI-a and aUDI-a300-750 as high as possible. The room prototype was tested in two design parameters, the room prototype's orientation (north and south) and 13 variations of the kinectic facade thread length (with a range of 0-12 cm) which will affect the prototype’s WWR. Experimental tests were carried out on the room prototype on the roof of a building for both design parameters. Then the room prototype was validated by running simulations on Rhinoceros 3D software with Grasshopper, Honeybee, and Ladybug plug-ins. Bandung City weather data was employed to run the room prototype simulation for both design parameters. Results of the daylight evalution performance of the tensile fabric kinetic facade show that there are differences in performance in the north and south orientations. In addition, with the same performance of the room prototype, the tensile fabric kinetic facade has the best daylight performance at 2 ~ 11 cm thread length for north orientation and 4 ~ 12 cm thread length for south orientation. The EA illuminance target value set as control is 446 ~ 921 lux for all orientations.