Study on the Application of Polymer Thermal Energy Storage Materials in Building Energy Conservation System

The application of polymer thermal energy storage materials in buildings can realize such functions as building temperature regulation, residual heat storage, auxiliary heat storage, and solar energy storage and utilization, which is an effective method for building energy conservation. With the polymer thermal energy storage materials as the form-stable matrix and phase change materials for thermal energy storage as research object, this paper conducts an in-depth study on heat storage mechanism and application of polymer thermal energy storage materials. The results show that the thermal conductivity and phase change energy storage rate determine the performance and efficiency of thermal storage materials, and the thermal conductivity of polymer thermal energy storage material depends mainly on lattice vibration. The latent heat value of the larger thermal energy storage board has a more pronounced adjustment effect on the indoor air temperature, thus can improve the living comfort of the building. The surface temperature increases gradually with the increase of the thickness of the thermal energy storage board, and the total amount of sensible thermal energy and latent thermal energy increase. The greater the thickness of the thermal energy storage board, the higher the indoor temperature at the same time. This study provides a theoretical basis for the application of polymer thermal energy storage material in building energy-saving systems.