ACTIVE ANIDOLIC FOR DAYLIGHTING OPENING IN DEEP BUILDING

• Main Author: AMALIA ACHSANI - NIM: 25215004, RIZKY
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/30607
• Institution: Institut Teknologi Bandung

<p align="justify">The limited ability to enter natural light into the building causes the utilization of natural light both direct and diffuse light from sun is very limited. The incident angle of sunlight from morning to evening and the presence of a moving cloud blocking the sunlight are perceived as a lighting disruption. The performance of lighting sistems in the building plays an important role to enter the light far into the deepest part of the building. Anidolic is one of the lighting sistems that work by directing direct and diffuse daylight using a parabolic-shaped curved mirror that functions as a compound parabolic concentrator and deconcentrator. This study discusses the potential of active anidolics in humid tropical environments Bandung City to improve the quality and quantity of natural lighting in space based on passive anidolic research conducted by: 1) Scartezzini (2002); 2) Kleindienst (2006); 3) Wittkopf et al (2010); 4) Binarti & Satwiko (2015). The active anidolic performance is demonstrated by the role of the material-coated curved concentrator plane and deconentrator with a reflectance number of 0.79 to direct direct and diffuse frontal light (HSA = 0o) into light duct (W=1, H=1 and L=10 meters). Active anidolic performance in measuring luminance intensity using Lutron LX-1108 lightmeter sensor with measurement range 0-400.000 lux with resolution of 0.01 lux. Tests were conducted in November and December in a various weather conditions: clear, partly cloudy and overcast sky. <br /> <br /> <br /> The results of the measurements show that anidolics provide better quality and quantity of illumination compared with conditions without anidolic. The performance is influenced by the conditions of the sky and the ability of anidolic shape reflection. The best performance in clear and partly cloudy sky is achieved by an anidolic tipe C1, whereas under overcast sky is achieved by an anidolic tipe S2. The use of an anidolic tipe C1 in clear sky can provide the lighting level at depth 10 meter reaching 42.96 times better, while in partly cloudy sky can reach 16.88 times better than without anidolic. The use of anidolic tipe S2 on overcast sky can give the lighting level at a depth of 10 meters reaching 5.65 times better than without anidolic. The use of active anidolics combined with tipe C1 and S2 tipe performs better than the use of anidolic tipes in passive form. The active anidolic use in clear and partly cloudy sky skenarios throughout the day shows average performance similar to that of the C1-tipe active anidolic reaching 13.77 times better than with no anidolics. However, the active anidolic performance of C1-S2 is more effective in increasing the illumination level and distribution of light in the room under unstable weather conditions in which one day there is clear, partly cloudy and overcast weather. Its use can reach 0.37 points higher than passive C1 tipe, reaching 2.28 points higher than passive tipe S2 use and reaching 5.93 points higher than using passive C5 tipe. So this technology is suitable developed as a smart lighting opening in tropical areas that many rain like in Indonesia.<p align="justify">