Lowering the cost of large-scale energy storage: high temperature adiabatic compressed air energy storage
Lowering the cost of large-scale energy storage: high temperature adiabatic compressed air energy storage
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DOI：
10.1016/j.jppr.2017.06.001
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发表时间：
2017-06
影响因子：
5.3
通讯作者：
B. Cárdenas;A. Pimm;B. Kantharaj;M. Simpson;J. A. Garvey;S. Garvey
中科院分区：
文献类型：
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作者：
B. Cárdenas;A. Pimm;B. Kantharaj;M. Simpson;J. A. Garvey;S. Garvey
压缩空气储能技术技术成熟，单位存储容量成本低，在输电网能量平衡方面具有很强的潜力。绝热压缩空气储能（A-CAES）系统通常在充电阶段将空气从环境温度中压缩，并在放电阶段将空气膨胀回环境温度。本文探讨了a - caes系统的创新操作方案的使用，旨在降低给定储能容量下系统的总成本。与以压缩空气为主要储能介质的现有设计相比，提出的配置考虑了压缩前空气的预热，这增加了以高级热量形式存储的总火能的比例。将总能量的很大一部分存储为热量，可以减少系统中昂贵的压力存储的容量，并用更便宜的热能存储来取代它。此外，还介绍并深入讨论了基于上述概念的集成系统与太阳能热发电或中低品位废热的配置。
Compressed air energy storage is an energy storage technology with strong potential to play a significant role in balancing energy on transmission networks, owing to its use of mature technologies and low cost per unit of storage capacity. Adiabatic compressed air energy storage (A-CAES) systems typically compress air from ambient temperature in the charge phase and expand the air back to ambient temperature in the discharge phase. This papers explores the use of an innovative operating scheme for an A-CAES system aimed at lowering the total cost of the system for a given exergy storage capacity. The configuration proposed considers preheating of the air before compression which increases the fraction of the total exergy that is stored in the form of high-grade heat in comparison to existing designs in which the main exergy storage medium is the compressed air itself. Storing a high fraction of the total exergy as heat allows reducing the capacity of costly pressure stores in the system and replacing it with cheaper thermal energy stores. Additionally, a configuration that integrates a system based on the aforementioned concept with solar thermal power or low-medium grade waste heat is introduced and thoroughly discussed.