OPTIMIZATION OF ASYMMETRIC BILATERAL COMPLEX FENESTRATION SYSTEMS IN STATE ELEMENTARY SCHOOL BUILDINGS IN INDONESIA

• Main Author: Ramadhani, Dhafira
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/66689
• Institution: Institut Teknologi Bandung

Daylight is an important factor in building design and planning. Daylight in buildings has two advantages: it reduces the total amount of the building energy use and enhances the interior lighting quality. Daylighting should therefore be implemented in buildings, including school buildings. In Indonesia, there are a lot of elementary school buildings, particularly State Elementary Schools (SDN). However, there are only few studies on daylighting in SDN classrooms. Indonesia, on the other hand, has a tropical climate with steady, long-lasting daylight throughout the year. However, these circumstances are not effectively taken into account in designing elementary schools classrooms. Fenestration, or the opening system, is one of the key elements in the daylighting design of school classrooms. The Minister of Education and Culture's Regulation No. 61 of 2012 stipulates that SDN buildings must be equipped with symmetrically bilateral openings, which have identical shape and size, located on two opposing façades,. despite the fact that the solar radiation factor for each building orientation varies. Nowadays, the use of Complex Fenestration System (CFS) is commonly found in buildings. The CFS is a fenestration system with shading that causes multiple inter-reflections in various directions, enabling one to better control the incoming daylight in the rooms.. Due to the different solar radiation factor in each orientation, the CFS on each façade orientation should be ideally designed separately, creating asymmetrical bilateral openings. Therefore, this final project deals with optimization of CFS with asymmetrical bilateral openings, to be applied in Indonesian state elementary schools classrooms. To achieve the objectives, modeling with Rhinoceros, simulation with Honeybee, and single-objective optimization utilizing Radial Basis Function Optimization (RBFOPT) based on ????????????300/50%, ????????????1000,250, UDI250?750????????, and ????????????100?3000???????? metrics are conducted in this final project. Because the CFS is asymmetrically bilateral, the optimization process seeks to identify the most ideal variation of the CFS parameters in each orientation and on each side of the fenestration. Vertical and horizontal blinds are chosen as the CFS type. The input variables in this case are the WWR (Window to Wall Ratio), BWR (Blind to Wall Ratio), slat width, space to width ratio, slat angle, and blind type, using climate data from Lhokseumawe City which represents north of the equator and Bandung City which represents south of the equator. Based on the simulation results of the initial building design simulation with no CFS, the ????????????300/50% values in all locations have met the criterion of ? 55%. However, in each location, some of the ????????????1000,250 and UDI250?750???????? have not been satisfied completely, i.e., the criteria of ? 10% and ? 80% have not been met.