压缩空气储能系统热能储存与利用研究进展

Research Progress on the Thermal Energy Storage and Utilization of Compressed Air Energy Storage System

压缩空气储能是解决可再生能源大规模并网不稳定的有效途径之一,是目前大规模储能技术研发的重点。将系统压缩热进行储存和利用是提高其效率和经济效益的重要手段。本文介绍了压缩空气储能技术的发展历程和基本原理,进一步分析了显热蓄热、潜热蓄热和热化学蓄热3种蓄热方式的技术现状,发现采用潜热蓄热是提升先进绝热压缩空气储能系统综合性能最有潜力的方式。从蓄热子系统热能利用方面出发,总结归纳先进绝热压缩空气储能系统耦合其他能源系统的研究进展,发现先进绝热压缩空气储能系统耦合冷热电联产、煤电机组和太阳能集热系统能进一步改善整体能量梯级利用率、效率性能和经济效益。最后,总结和展望了压缩空气储能系统热能储存与利用的研究方向。

Compressed air energy storage(CAES)is one of the effective ways to solve the unstable large-scale grid connection of renewable energy,and is the focus of large-scale energy storage technology re-search and development at present.Rational storage and utilization of system compression heat is impor-tant means to improve its efficiency and economic benefit.In this paper,the development history and basic principle of compressed air energy storage technology are introduced,and the technical status of sensible heat storage,latent heat storage and thermochemical heat storage is further analyzed.It is found that latent heat storage is the most potential way to improve the comprehensive performance of advanced adiabatic compressed air energy storage system.From the thermal energy utilization of heat storage sub-system,the research progress of advanced adiabatic compressed air energy storage system coupled with other energy systems is summarized,and it is found that advanced adiabatic compressed air energy storage system coupled with the combined cooling heating and power(CCHP),coal-fired power plant and solar heat collection technology can further improve the energy cascade utilization,efficiency performance and economic benefits.Finally,the research direction of heat energy storage and utilization in compressed air energy storage system is summarized and prospected.