Abstract:

Phase change energy storage materials is a type of energy storage materials that utilize physical phase changes at a specific temperature to achieve energy storage and release. They have the advantages of high heat storage density, fast heat release rate, and uniform distribution of heat storage temperature. In the application of building engineering, it can effectively reduce temperature fluctuations in building structures and achieve the goal of energy conservation and emission reduction. However, there is still a long way to go in the research of its specific application effects. In order to improve the application effectiveness of new phase change energy storage materials in construction engineering, the article conducts research on the characteristics of new phase change energy storage materials based on starch, cellulose, and lignin as carriers. It also analyzes their applications in roof insulation, wall insulation, glass greenhouses, solar photovoltaic power generation, and other fields. It also puts forward prospects and insights for its future development direction. I hope to better promote the integration of new phase change energy storage materials with other building energy-saving technologies, and further enhance the application scope and effectiveness of phase change energy storage materials.

Key words: phase change energy storage materials, energy conservation and environmental protection, starch, cellulose, lignin, construction engineering