Investigation and simulation based optimization of an energy storage system with pressurized air

IF 0.8 Q4 THERMODYNAMICS

Archives of Thermodynamics Pub Date : 2023-07-20 DOI:10.24425/ather.2021.139658

Dirk Herbert

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引用次数: 0

Abstract

As a central goal of the energy transition in Germany, the share of renewable energies is to be increased to over 80% by 2050. Due to ﬂuctuating wind conditions or the day-night cycle, storage systems must be integrated into the supply grid for a continuous regenerative power supply from wind and solar energy. In addition to pumped storage systems, batteries and Power2Gas approaches, compressed gases (optimally air) can also be used for this purpose. The aim of the research and development project presented is to develop such a storage unit with the best possible eﬃciency and long service life. To this end, basic calculations were ﬁrst made on possible eﬃciencies depending on the assumed changes in the state of the working gas. Furthermore a piston compressor for compressed air generation was investigated experimentally with regard to its eﬃciency. In addition, the compressor was modelled and simulated in a corresponding software. Thus, on the one hand, the eﬃciency of the existing piston compressor could be determined experimentally and, on the other hand, the simulation model could be assessed with regard to its suitability for the purpose of simulation-based optimization. Measures to increase eﬃciency can be derived from the results. In addition, it becomes possible to forecast the achievable overall eﬃciency of such an energy storage system with compressed air.

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基于仿真的增压空气储能系统优化研究

作为德国能源转型的核心目标，到2050年可再生能源的份额将增加到80%以上。由于波动的风力条件或昼夜周期，存储系统必须集成到电网中，以实现风能和太阳能的连续可再生电力供应。除了抽水蓄能系统、电池和Power2Gas方法之外，压缩气体(最好是空气)也可以用于此目的。提出的研究和开发项目的目的是开发这样一种具有最佳效率和长使用寿命的存储单元。为此，首先根据假定的工作气体状态的变化对可能的效率进行了基本计算。此外，还对活塞式压缩空气发生器的效率进行了实验研究。此外，还利用相应的软件对压缩机进行了建模和仿真。因此，一方面可以通过实验确定现有活塞式压缩机的效率，另一方面可以评估仿真模型的适用性，以便进行基于仿真的优化。从结果中可以得出提高效率的措施。此外，还可以预测使用压缩空气的这种储能系统的可实现的总体效率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Archives of Thermodynamics THERMODYNAMICS-

CiteScore

1.80

自引率

22.20%

发文量

期刊介绍： The aim of the Archives of Thermodynamics is to disseminate knowledge between scientists and engineers interested in thermodynamics and heat transfer and to provide a forum for original research conducted in Central and Eastern Europe, as well as all over the world. The journal encompass all aspect of the field, ranging from classical thermodynamics, through conduction heat transfer to thermodynamic aspects of multiphase flow. Both theoretical and applied contributions are welcome. Only original papers written in English are consider for publication.