Numerical Study of Integrating the Phase Change Material with Building Envelop for Improved Indoor Thermal Comfort

This research simulates the temperature dynamics of the phase change material PCM using the new approach to calculate heat capacity, supported by advanced, efficient explicit numerical methods. The study examines many scenarios for building wall geometries and boundary conditions by controlling the heat loads and ensuring comfortable interior temperatures. Paraffin wax, selected for its distinct melting temperatures and latent heat capacities, is used as the PCM. The study consistently demonstrates the effectiveness of PCMs in decreasing the heat transfer indoors of the building, regardless of the wall material. This research helps to understand the PCMs' behaviour using the Effective Heat Capacity model, offering valuable insights for energy-efficient building design and highlighting the critical role of selecting suitable PCMs in construction.