Evaluating thermal comfort in buildings with different PCM configurations: A simulation-based approach

This study explores the potential of Phase Change Materials (PCMs) in improving both thermal comfort and energy efficiency in buildings. Nine PCM configurations (S1-S9), varied by melting temperature, thickness, and location (wall, roof, floor), were evaluated using EnergyPlus simulations. Thermal comfort was assessed with the Predicted Mean Vote (PMV) and Percentage of People Dissatisfied (PPD) indices, following ASHRAE Standard 55. The PCM melting temperatures were 18°C, 21°C, and 23°C, representing variations in their thermal behaviour under different seasonal conditions. The results of the simulations showed that the integration of PCM in the building envelope reduced energy demand while maintaining thermal comfort. The floor configurations (S3, S5, S7) demonstrated the lowest heating energy demand while achieving acceptable comfort levels. These findings suggest that strategic placement of PCMs in building floors is an effective solution for optimizing energy consumption without compromising occupant comfort.