Energy Storage Science and Technology ›› 2020, Vol. 9 ›› Issue (6): 1847-1857.doi: 10.19799/j.cnki.2095-4239.2020.0129

• Energy Storage System and Engineering • Previous Articles     Next Articles

Review on application of cold storage and heat storage technology based on distributed energy system

Jun WANG1, Jianjun CAO1, Liyong ZHANG1, Yaqi LIU2,3, Haoshu LING2,3(), Yujie XU2,3, Liang WANG2,3, Xuezhi ZHOU4, Ningning XIE4, Haisheng CHEN2,4   

  1. 1.Shenhua Guohua (Beijing) Distributed Energy Technology Co. , Ltd. , Beijing 100025, China
    2.Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
    3.Zhongke Energy Storage (Beijing) Consulting Co. , Ltd. , Beijing 100190, China
    4.National Energy Large Scale Physical Energy Storage Technologies Research and Development Center (Bijie), Bijie 551700, Guizhou, China
  • Received:2020-04-01 Revised:2020-06-03 Online:2020-11-05 Published:2020-10-28
  • Contact: Haoshu LING E-mail:linghaoshu@iet.cn

Abstract:

Distributed energy systems have the advantage of high-energy utilization and have been rapidly developed. However, problems, such as large design capacity, reduced operating efficiency, and poor security of coupled renewable energy systems, are still being encountered. Cold and heat storage technologies are applied to distributed energy systems, which are widely used, to solve the abovementioned problems. However, the related work mostly focuses on a single case, which lacks a systematic arrangement and discussion. Therefore, this study first analyzes the current status of cold and heat storage materials. The characteristics of different cold and heat storage materials are then discussed. The coupled application of distributed energy systems and cold and heat storage technologies is summarized. Moreover, the application effects are analyzed to determine the development trend of cold and heat storage technologies based on distributed energy systems. The results show that water, molten salt, refractory brick, ice, paraffin, and hydrated salt are more suitable for cold and heat storage in commercial applications. The cold storage and heat storage technologies coupled with distributed energy systems are mainly water, ice, molten salt, phase change thermal, and thermochemical thermal storage technologies. Among them, the application of water, ice, and molten salt storage technologies is more mature. The coupled application with the phase change thermal storage technology is in the demonstration application stage, while that with the thermochemical thermal storage technology is in the laboratory research stage. The application of the cold and heat storage technology with renewable energy distributed systems is an important development direction in the future. This study could provide reference and basis for the efficient application of China's distributed energy system.

Key words: distributed energy system, cold storage, heat storage, sensible heat, latent heat, thermochemical heat

CLC Number: