Research Progress in Thermal Performance Enhancement Technologies for Phase Change Heat Storage Systems
Phase change heat storage technology uses materials to store a large amount of latent heat in the phase change process,which can effectively solve the problem of instability and fluctuation of renewable energy utilization.Although the phase change heat storage technology has high heat storage,it has the prob-lem of small thermal conductivity of phase change materials,which leads to low heat exchange efficiency of the system and is limited in practical application.In this paper,the current performance enhancement tech-nology of phase change heat storage system is summarized,and the research status at home and abroad is comprehensively reviewed from the three levels of improving the thermal conductivity of materials,optimizing the structure of the device,and adjusting the system layout.The influence of thermal performance in the exothermic process is summarized,and the development prospect of performance enhancement technology of phase change heat storage system is discussed,so as to provide reference for the application of phase change heat storage technology in power system,energy,chemical industry,construction and other fields.
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