kth.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Optimum coupling of thermal energy storage and power cycles for carnot batteries
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.ORCID iD: 0000-0001-6108-5229
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.ORCID iD: 0000-0002-7804-667X
2024 (English)In: Proceedings of the 7th International Seminar on ORC Power System, Editorial Universidad de Sevilla , 2024, p. 751-760, article id 141Conference paper, Published paper (Refereed)
Abstract [en]

To enable the widespread exploitation of intermittent, low-cost, and non-dispatchable renewable energytechnologies, energy storage plays a key role in providing the required flexibility. In the spectrum ofenergy storage systems, one out of a few geographically independent possibilities is the storage ofelectricity into heat, so-called Carnot batteries. For thermal-to-electricity reconversion, depending onthe operating energy storage temperatures, conventional or advanced power cycles can be integratedinto the system, yielding different techno-economic performances. This work proposes a methodologythat enables decision-making in selecting the adequate power cycle and Thermal Energy Storage (TES)type for a wide range of operating temperatures between 200 and 800 °C. To select the optimumcoupling of TES and power block, a techno-economic optimization has been conducted aimed atminimizing the Levelized Cost of Storage (LCOS) for different plant capacities and charging costs. Thestudy explores various power block configurations, including Organic Rankine Cycle (ORC), steamRankine cycle, and supercritical CO2 (sCO2) Brayton cycle. Additionally, it evaluates different TESoptions such as molten salt, particle, and air packed bed TES. Results highlight that, for a charging costof 50 EUR/MWh, the most cost-effective combination of TES and power block involves sCO2 powerblocks with recompression and intercooling, along with particle-based TES operating at temperaturesbetween 600 to 800 °C and a temperature difference of 200 °C. ORCs are suitable for low temperatures(up to 350 °C) and high temperature differences, while the steam Rankine cycle is considered optimalbetween the low-temperature and the sCO2 preferred regions. Air-packed bed TES is suggested as aviable option when TES represents a large share of the capital cost, with low charging costs, low hottemperatures, or low temperature differences. Molten salt TES is ideal when its design temperaturesalign with the operating limitations of the salts. Particle-based TES is the most cost-effective choiceacross a wide range of temperatures, at small (10 MW) and large scales (100 and 200 MW).

Place, publisher, year, edition, pages
Editorial Universidad de Sevilla , 2024. p. 751-760, article id 141
National Category
Energy Systems Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-355094DOI: 10.12795/9788447227457_141OAI: oai:DiVA.org:kth-355094DiVA, id: diva2:1907336
Conference
7th International Seminar on ORC Power Systems, September 4-6, 2023, Seville, Spain
Funder
EU, Horizon 2020, 952953
Note

Part of ISBN: 978-84-472-2745-7

QC 20241022

Available from: 2024-10-22 Created: 2024-10-22 Last updated: 2024-10-22Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full text

Authority records

Guccione, SalvatoreGuédez, Rafael

Search in DiVA

By author/editor
Guccione, SalvatoreGuédez, Rafael
By organisation
Heat and Power Technology
Energy SystemsEnergy Engineering

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 225 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf