Enhancing thermal and visual comfort through sun shading and glazing: A case study of Pusgiwa building, Universitas Indonesia

This study examines the relationship between the building envelope and the indoor environment quality, with a specifical focus on visual and thermal comfort. Factors contributing to visual comfort include illuminance and light distribution, while thermal comfort is primarily influenced by air temperature. The research centers on the north façade of the Educational Building at the University of Indonesia, Pusgiwa, particularly the 4th floor classroom, to evaluate how the sun-shading system and glazing materials influence lighting and temperature conditions. By analyzing the existing design and materials, the study investigates potential interventions to enhance illuminance, daylight availability, and operative temperature within the classroom. The methodology includes calculating solar angles and simulating various sun-shading and glazing material scenarios using Rhinoceros and Grasshopper software. The results indicate that installing horizontal, multi-layered overhang shading with optimal spacing can increase daylight availability and reduce indoor air temperature. Furthermore, the use of materials with a low U-Value and Solar Heat Gain Coefficient (SHGC), such as Low-E double glazing, is recommended to further improve indoor environmental quality. These findings provide valuable insights and recommendations for enhancing visual and thermal comfort in both existing and future buildings at Pusgiwa and similar facilities.