In the search for alternatives to fossil fuels, renewable energy sources such as wind and solar are gaining increasing importance in the global energy grid. Despite its reserves are abundant, this type of energy is intermittent, which causes some unpredictability in meeting energy demand through these resources. To mitigate this problem, energy storage systems can be used combined with renewable sources. Compressed air energy storage (CAES) systems stand out for their high efficiency and affinity with the environment. In the present article a thermodynamic analysis of an operating cycle of a small scale CAES system with constant volume reservoir is conducted, taking into account three different operating conditions for compressed air storage walls. The conducted analysis of the CAES system considered includes an energetic and an exergetic investigation, aiming to determine and assess which are the most relevant points of exergy destruction in the system, as well as the effects of air storage conditions on the thermodynamic performance of the global system. Among the main results it was observed that the combustion chamber presented the highest rates of exergy destruction, and that the throttle valve installed on the exit of the air storage reservoir was responsible for an average of 9% of the total exergy destroyed in the CAES system over a complete work cycle.

在寻找化石燃料的替代品时，风能和太阳能等可再生能源在全球能源网中的地位越来越重要。尽管其储量丰富，但这种类型的能源是断断续续的，这导致通过这些资源满足能源需求时有些不可预测。为了减轻这个问题，可以将能量存储系统与可再生资源结合使用。压缩空气储能（CAES）系统以其高效率和与环境的亲和力而脱颖而出。在本文中，考虑了压缩空气存储壁的三种不同的运行条件，对具有恒定容积储罐的小型CAES系统的运行周期进行了热力学分析。对所考虑的CAES系统进行的分析包括一次充满活力的研究和一次充满活力的研究，旨在确定和评估哪些是系统中本能破坏的最相关点，以及空气存储条件对全球热力学性能的影响。系统。在主要结果中，观察到燃烧室的火用破坏率最高，安装在储气罐出口处的节流阀平均占CAES系统总火用的9％在一个完整的工作周期中。