Adiabatic compressed air energy storage – A study on dynamic performance with thermal energy storage

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

Up to day, 70% of the gross electricity (~ 20000 TWh) is produced via fossil fuel; to reduce this share and abate CO2 emissions the energy system will face a dramatic change in the near future consisting in a significant introduction of intermittent renewable energy sources. The implementation of this step change will be possible only through efficient and economic grid-scale electrical energy storage. In this paper we study the operation of a 220MWe adiabatic compressed air energy storage (ACAES) plant with a packed bed thermal energy storage. Although in the literature designs of thermal stores for ACAES have been presented, there is a lack of studies addressing how the TES system affects the performance of ACAES plant. This work contribute to fill this gap in the literature by linking in a quantitative manner the TES sizing and ACAES global efficiency. We achieve this goal via a algebraic-differential model that account both dynamic and off-design performance of ACAES plant’s components. The results shows that after 30 charge/discharge cycles the thermal store reaches cycling; this enable the A-CAES to achieve a round trip efficiency of 70%.

Details

Original languageEnglish
Title of host publicationECOS 2016 - Proceedings of the 29th International Conference on Efficiency, Cost, Optimisation, Simulation and Environmental Impact of Energy Systems
EditorsAndrej Kitanovski, Alojz Poredos
Publication statusPublished - 2016
Event29th International Conference on Efficiency, Cost, Optimisation, Simulation and Environmental Impact of Energy Systems, ECOS 2016 - Portoroz, Slovenia
Duration: 19 Jun 201623 Jun 2016

Publication series

NameECOS 2016 - Proceedings of the 29th International Conference on Efficiency, Cost, Optimisation, Simulation and Environmental Impact of Energy Systems

Conference

Conference29th International Conference on Efficiency, Cost, Optimisation, Simulation and Environmental Impact of Energy Systems, ECOS 2016
CountrySlovenia
CityPortoroz
Period19/06/1623/06/16

Keywords

  • Compressed Air, Energy Storage, Grid scale, Thermal Storage

ASJC Scopus subject areas