Energy Storage Science and Technology ›› 2023, Vol. 12 ›› Issue (12): 3852-3872.doi: 10.19799/j.cnki.2095-4239.2023.0543

• Special issue on composite thermal storage • Previous Articles     Next Articles

Recent progress in the investigation and application of packed-bed latent thermal energy storage systems

Yanyan ZHANG1(), Yaxuan XIONG2(), Yahui CHEN1, Ruixing QUAN1, Guanggui CHENG1, Yanqi ZHAO1,3(), Yulong DING4   

  1. 1.School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
    2.School of Environmental and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
    3.Key Laboratory of Thermal Management and Energy Utilization of Aircraft, Ministry of Industry and Information Technology, Nanjing 210016, Jiangsu, China
    4.Birmingham Centre for Energy Storage, School of Chemical Engineering, University of Birmingham, Birmingham B15 2TT, United Kingdom
  • Received:2023-08-11 Revised:2023-09-13 Online:2023-12-05 Published:2023-12-09
  • Contact: Yaxuan XIONG, Yanqi ZHAO E-mail:2222103124@stmail.ujs.edu.cn;xiongyaxuan@bucea.edu.cn;hazhaoyq@126.com

Abstract:

Packed-bed latent thermal energy storage (PLTES) systems enable the reuse of thermal energy and efficient collection of renewable energy, making significant contributions toward achieving carbon neutrality. Considering the intricate transient nature of PLTES systems, this report begins by summarizing the numerical models employed for predicting the thermal performance of these systems. Subsequently, the performance evaluation of PLTES systems is addressed and presented together with the methodology, highlighting the advantages and distinctions between exergy efficiency analysis and energy efficiency analysis. In addition, by analyzing and summarizing the performance optimization methods applied to PLTES systems, cylindrical tanks with an aspect ratio greater than 1 are shown to be usually preferred. According to the selection of practical application scenarios, thermal oil, molten salt, and air are generally used as heat transfer fluids, and shape-stabilized phase-change materials are more promising for application. Subsequently, the report introduces the application of the PLTES system in heat recovery from industrial waste and efficient use of solar energy. Finally, prospects for the future development of PLTES systems are discussed, including areas such as tank design, heat storage unit design, operational strategies, high-temperature environments, and system cost-effectiveness. This discussion aims to provide insights and guidance to promote the development and practical application of PLTES systems.

Key words: industrial waste heat recovery, thermal energy storage, solar energy utilization, phase change packed bed, phase change material, energy efficiency, exergy efficiency

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