Investigation into the Self-Regulating Temperature Mechanism and Energy-Saving Performance of Phase Change Energy Storage Materials in Building Walls

With the global energy crisis and environmental issues becoming increasingly severe, building energy efficiency has emerged as a key societal concern.Phase change energy storage materials (PCMs) are gaining prominence in the field of building energy conservation due to their ability to absorb and release large amounts of latent heat during temperature fluctuations, thereby achieving a self-regulating temperature effect.Although numerous studies have explored the properties of PCMs and their applications in buildings, most have focused on optimizing material performance and conducting tests in laboratory settings, often overlooking the complex thermal dynamics in real-world building environments.This study establishes a mathematical model of PCMs in building walls, defines the initial and boundary conditions, and conducts error analysis to systematically investigate the self-regulating temperature mechanism and the energy-saving effects of these materials.The findings of this research will provide new theoretical support and practical references for the advancement of building energy-saving technologies.