Thermodynamic analysis of compressed CO2 energy storage in salt caverns with gravel stabilization

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F24%3A00371594" target="_blank" >RIV/68407700:21220/24:00371594 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.est.2024.110509" target="_blank" >https://doi.org/10.1016/j.est.2024.110509</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.est.2024.110509" target="_blank" >10.1016/j.est.2024.110509</a>

Result language

angličtina

Original language name

Thermodynamic analysis of compressed CO2 energy storage in salt caverns with gravel stabilization

Original language description

Efficient energy storage with large capacity is necessary for the future development of the energy sector, which will be partly based on renewable energy sources. These energy sources are variable in both time and space and surplus energy must be stored at times of high output and extracted when necessary. At present, pumped storage plants and, to a lesser extent, compressed air storage are such storage facilities. In this study, a thermodynamic analysis of energy storage with compressed CO2 in a closed system of two caves is performed. In addition, to increase the thermodynamic efficiency, this system is equipped with gravel as a thermal capacity term. Results from more than 420 configurations show that such a storage system can achieve efficiencies of over 60% and powers of over 100 MW depending on boundary conditions. The maximum electrical energy that can be generated reaches around 600 MWh. This system shows higher efficiency using CO2 than an air system without the need for above-ground heat storage installation. Aspects affecting the performance, efficiency, and capacity of the storage system are described in detail in the paper.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20303 - Thermodynamics

Project

—

Continuities

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Energy Storage

ISSN

2352-152X

e-ISSN

2352-1538

Volume of the periodical

82

Issue of the periodical within the volume

March

Country of publishing house

GB - UNITED KINGDOM

Number of pages

18

Pages from-to

1-18

UT code for WoS article

001166385800001

EID of the result in the Scopus database

2-s2.0-85184785612