OPTIMIZATION OF ROOM WALL COATING DESIGN USING PHASE CHANGE MATERIAL (PCM) FROM THE ASPECT OF INVESTMENT COST AND THERMAL CONDITION OF ROOM

• Main Author: Rahmalia Syafitri, Amanda
• Format: Theses
• Language: Indonesia
• Subjects: Arsitektur
• Online Access: https://digilib.itb.ac.id/gdl/view/69975
• Institution: Institut Teknologi Bandung

Room air temperature that is too high is the cause of the need for air conditioning for the room. The choice of using air-cond technology is considered to be an easy and affordable solution that prevents further exploration of passive cooling technology. One of the passive cooling technologies that has not been widely developed is the use of phase change materials (PCM). This material works as a thermal energy storage (TES) medium that is able to absorb and release heat from and to its environment. The inner side of the wall plays an important role in conditioning the indoor thermal environment because these areas absorb and release heat from and to the air. The performance of brick walls in absorbing and releasing heat can be improved by adding PCM components to the walls. This study discusses the investment costs and thermal conditions of the wall components attached to PCM with various thicknesses (4 cm, 8 cm, and 12 cm) and application positions (top, middle and bottom) on the wall. The results showed that the optimal room wall coating design scenario using phase-changing materials from the aspect of investment costs and quality room thermal conditions was obtained in the PCM application scenario with a thickness of 4 cm at the bottom of the wall. Meanwhile, if you only consider the amount of operational costs, then the PCM application scenario of 8 cm in the middle position is the best scenario. The success of PCM application scenarios is not only due to the large number of PCM volumes, thicknesses, and positions used. Several factors affect the performance and effectiveness of PCM that can be traced apart from volume variables, namely the local climate, the characteristics of the PCM material, the accompanying material that wraps or coats the PCM, inlet wind speed, inlet wind temperature and the extent of exposure of PCM to the indoor space. The findings of passive technology that uses radiative cooling need to be considered by architects and interior designers in designing.