IDEAS home Printed from https://ideas.repec.org/a/eee/renene/v245y2025ics096014812500388x.html
   My bibliography  Save this article

Sensible thermal energy storage in packed beds using supercritical CO2: A comparative study of tanks with steel-only and reinforced concrete walls

Author

Listed:
  • Luz, Thaís D.
  • Battisti, Felipe G.
  • da Silva, Alexandre K.

Abstract

Packed-bed thermal energy storage (PBTES) is an affordable option to store energy in concentrated solar power (CSP) plants, where supercritical carbon dioxide (s-CO2) can be the working fluid in Brayton cycles. Due to the elevated operating pressures required by the s-CO2 in the power block, the PBTES tanks require thick walls to operate safely, representing constructive and economic constraints for their applicability. Then, this work compares two constructive alternatives from a numerical standpoint: steel-only walls and reinforced concrete (RC) walls. The comparison of these wall materials considers their thermal performance and the levelized cost of storage (LCOS) for different tank configurations, a novelty from the perspective of comparing the performance of different wall materials for PBTES tanks. A fixed volume of 2660m3, required for 8h discharge in a 10MW CSP plant, is maintained. The total storage volume can be divided into one, two, four, or eight parallel tanks while considering several aspect ratio values (AR=0.5 to 10) and wall inclinations (φ=0∘, 5°, and 10°). The reinforced concrete walls excel in every aspect considered, and the one-tank configuration with AR=1 and φ=0∘ presents the best LCOS.

Suggested Citation

  • Luz, Thaís D. & Battisti, Felipe G. & da Silva, Alexandre K., 2025. "Sensible thermal energy storage in packed beds using supercritical CO2: A comparative study of tanks with steel-only and reinforced concrete walls," Renewable Energy, Elsevier, vol. 245(C).
    • Handle: RePEc:eee:renene:v:245:y:2025:i:c:s096014812500388x
    DOI: 10.1016/j.renene.2025.122726
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S096014812500388X
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.renene.2025.122726?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:renene:v:245:y:2025:i:c:s096014812500388x. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/renewable-energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.