REDUCTION OF COOLING LOAD ENERGY ON PASSIVE DESIGN STRATEGY FOR VERTICAL HOUSING CASE STUDY: PUBLIC FLATS AND COMMERCIAL FLATS IN BANDUNG

• Main Author: Rahmadyani, Helfa
• Format: Theses
• Language: Indonesia
• Subjects: Arsitektur
• Online Access: https://digilib.itb.ac.id/gdl/view/48955
• Institution: Institut Teknologi Bandung

The improvement of building construction is causes of energy use issue in Indonesia. The building sector contributes 30% of carbon dioxide gas emissions and consumes 40% of energy. In building life cycle, the operational phase is considered and has a significant impact on energy use. Therefore, development in Indonesia must lead to energy-efficient buildings that consider in reducing the cooling load. occupancy sector is a sector that has the largest percentage of total energy consumption than the other sectors and the rapid population growth has resulted in an increase in residential development, especially vertical housing. Therefore, this research needs to review the strategies that can reduce carbon emissions and cooling loads energy in vertical housing for energy-efficiency. Through the literature, the passive component design strategy is considered capable of optimizing and reducing energy use in buildings, so this study has five objectives; identify passive design components that are implemented in vertical housing theoretically and practically, identify the thermal comfort conditions in vertical housing, find out the energy performance of existing vertical housing related to cooling loads, find out the performance of passive design components that significantly influence the decrease in cooling energy, and determine the energy performance of vertical housing buildings based on proposed improvements to existing designs in reducing cooling loads. The stages of the research began with determine the theoretical passive design strategy through a literature review, then collect practical field data through observations, technichal drawings, and questionnaires. Furthermore, analyzing the implementation of passive design components and the conditions of space comfort through distribution and comparative analysis, then analyzing energy performance using software tools Open Studio and EDGE Building and analyzing significant passive design components that will be recommended to be proposed improvements. Then the last stage is to analyze the performance of the proposed improvement of design components based on significant factors while comparing the energy performance of existing building conditions and repair conditions. This research found that Rusunawa vertical housings built by the government are better than Rusunami vertical housings built by private parties, both in terms of implementing passive design components, conditions of thermal comfort, and energy performance. Based on the simulation results, the application of significant passive design components in the vertical housing is considered to have succeeded in reducing cooling load energy, with components namely natural openings or ventilation, the use of low-e glass material, and installation of overhangs in each window. Findings of this study can be used as a knowledge for stakeholders, planners and architects in planning and designing vertical residential buildings, especially public and commercial flats.