Volume 52

A Critical Review of Solid-liquid Phase Change for Thermal Energy Storage Applications Eetao Chen, Qihui Wang, Xiaohu Yang

Abstract

The use of phase change materials (PCMs) in various applications, such as brick walls, cold thermal energy storage systems, solar water heating, and photovoltaic-thermal (PVT) systems suggests significant potential for improving energy efficiency and thermal performance. This review discusses key findings from recent studies on optimizing PCM use in different scenarios. Studies emphasize the importance of comprehensive evaluations to determine the economic viability and environmental impact of brick PCM systems. Further investigations are recommended to develop composite PCMs suitable for year-round use and improve thermal performance in brick wall applications. For cold thermal energy storage systems, enhancing heat storage density, solidification rates, and operational efficiency is essential for PCM-based systems to effectively replace fossil fuels. Meanwhile, incorporating tracking systems and nano-enhanced PCMs in solar water heating systems can lead to enhanced performance and sustainability. In PVT systems, refining the preparation of nanoparticle PCMs and integrating efficient thermal transfer fluids prove to be key areas for improvement. Additionally, the utilization of enhanced PCMs (EPCMs) in PV modules has demonstrated improved temperature control and increased photoelectric conversion efficiency. Findings highlight the potential of PCM integration in various systems and emphasize the need for further research to optimize performance, enhance efficiency, and address environmental considerations. Overall, this review provides key insights for professionals working in the field of PCM-based thermal energy storage.

Keywords Thermal energy storage, solid-liquid phase change, solar thermal, thermal management