A review of eutectic salts as phase change energy storage materials in the context of concentrated solar power. (15th May 2023)

• Record Type: Journal Article
• Authors: Wang, Qing; Wu, Chunlei; Wang, Xinmin; Sun, Shipeng; Cui, Da; Pan, Shuo; Sheng, Hongyu
• Is Part Of: International journal of heat and mass transfer. Volume 205(2023)
• Publication Date: 2023-05-15
• Subjects: Phase change materials -- Thermal energy storage -- Eutectic salt; Heat -- Transmission -- Periodicals; Mass transfer -- Periodicals; Chaleur -- Transmission -- Périodiques; Transfert de masse -- Périodiques; Electronic journals; 621.4022
• DOI: 10.1016/j.ijheatmasstransfer.2023.123904
• Languages: English
• ISSNs: 0017-9310

Abstract

Highlights: Reviewed the development of various eutectic molten salts as phase change materials. Methods for increasing the thermal conductivity of eutectic molten salts were summarized and analyzed. The background of the application of eutectic molten salts in concentrated solar power plants is described. The future R&D directions and application challenges of eutectic molten salts are analyzed. Abstract: To solve the problems of energy crisis and environmental pollution, the use of thermal energy storage technology in renewable energy systems can eliminate the difference between energy supply and demand and improve the energy efficiency. This review summarizes the structure and application of concentrating solar power station. The preparation and characterization of eutectic salts as phase change materials are discussed herein. Furthermore, the methods to improve the thermal properties and stability of eutectic salt are described in detail. The addition of high-conductivity materials and the optimization process of heat storage unit structure and packaging technology are summarized and discussed. Finally, analysis of the application potential and challenges of eutectic salt in the field of high-temperature thermal energy storage in the near future is presented.