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Techno-Economic Analysis of Candidate Oxide Materials for Thermochemical Storage in Concentrating Solar Power Systems

Buck, Reiner and Agrafiotis, Christos and Tescari, Stefania and Neumann, Nicole and Schmücker, Martin (2021) Techno-Economic Analysis of Candidate Oxide Materials for Thermochemical Storage in Concentrating Solar Power Systems. Frontiers in Energy Research, 9 (69424). Frontiers Media S.A.. doi: 10.3389/fenrg.2021.694248. ISSN 2296-598X.

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Official URL: https://www.frontiersin.org/articles/10.3389/fenrg.2021.694248/full?&utm_source=Email_to_authors_&utm_medium=Email&utm_content=T1_11.5e1_author&utm_campaign=Email_publication&field=&journalName=Frontiers_in_Energy_Research&id=694248


The thermal storage capability is an important asset of state-of-the-art concentrating solarpower plants. The use of thermochemical materials, such as redox oxides, for hybridsensible/thermochemical storage in solar power plants offers the potential for higherspecific volume and mass storage capacity and as a consequence reduced levelized costof electricity making such plants more competitive. For the techno-economic systemanalysis, three candidate redox materials were analyzed for their cost reduction potential:cobalt-based, manganese–iron–based, and perovskite-based oxide materials. As areference process the use of inert commercial bauxite particles (sensible-only storage)was considered. A solar thermal power plant with a nominal power of 125 MWeand astorage capacity of 12 h was assumed for the analysis. For each storage material a plantlayout was made, taking the specific thermophysical properties of the material intoaccount. Based on this layout a particle break-even cost for the specific material wasdetermined, at which levelized cost of electricity parity is achieved with the referencesystem. Cost factors mainly influenced by the material selection are storage cost andsteam generator cost. The particle transport system cost has only a minor impact. Theresults show differences in the characteristics of the materials, for example, regarding theimpact on storage size and cost and the steam generator cost. Regarding the economicpotential of the candidate redox materials, the perovskite-based particles promise to haveadvantages, as they might be produced from inexpensive raw materials.

Item URL in elib:https://elib.dlr.de/143106/
Document Type:Article
Title:Techno-Economic Analysis of Candidate Oxide Materials for Thermochemical Storage in Concentrating Solar Power Systems
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Buck, ReinerReiner.Buck (at) dlr.deUNSPECIFIED
Agrafiotis, ChristosChristos.Agrafiotis (at) dlr.deUNSPECIFIED
Tescari, StefaniaStefania.Tescari (at) dlr.deUNSPECIFIED
Neumann, NicoleNicole.Neumann (at) dlr.deUNSPECIFIED
Schmücker, MartinMartin.Schmuecker (at) dlr.deUNSPECIFIED
Date:12 July 2021
Journal or Publication Title:Frontiers in Energy Research
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :10.3389/fenrg.2021.694248
Publisher:Frontiers Media S.A.
Keywords:solar power, thermochemical energy storage, particles, redox reaction, techno-economic optimization
HGF - Research field:Energy
HGF - Program:Materials and Technologies for the Energy Transition
HGF - Program Themes:High-Temperature Thermal Technologies
DLR - Research area:Energy
DLR - Program:E SW - Solar and Wind Energy
DLR - Research theme (Project):E - Advanced Heat Transfer Media
Location: Stuttgart
Institutes and Institutions:Institute of Solar Research > Solar High Temperature Technologies
Institute of Future Fuels
Deposited By: Lucarelli, Fabio
Deposited On:06 Oct 2021 17:39
Last Modified:14 Jan 2022 12:08

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