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Techno-Economic Analysis of Thermochemical Storage for CSP Systems

Buck, Reiner and Tescari, Stefania and Schmücker, Martin and Preisner, Nicole Carina and Agrafiotis, Christos (2019) Techno-Economic Analysis of Thermochemical Storage for CSP Systems. 25th SolarPACES Conference 2019, 1. - 4. Oct. 2019, Daegu, South Korea.

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The use of thermochemical materials, like redox oxides , for hybrid sensible/thermochemical storage in CSP plants can potentially reduce the LCOE and make such plants more competitive. For the techno-economic system analysis, three candidate redox materials were analyzed for their cost reduction potential: cobalt-based, manganese-based and perovskite-based oxide materials. As reference process the use of inert commercial bauxite particles (sensible-only storage) was considered. A CSP plant with a nominal power of 125 MWe and a storage capacity of 12h was assumed for the analysis. Cost factors influenced by the material selection are storage cost, steam generator cost and particle transport system cost. Based on total system cost and annual electricity generation, the LCOE was calculated. The results of the analysis show that some redox materials can significantly reduce the required storage mass and volume, while others lead only to a marginal improvement. More important is the specific cost of the redox material. Expensive cobalt-based materials result in significantly higher LCOE, while perovskite materials show potential for reduced LCOE when these particles can be manufactured at low cost. Therefore it is recommended to focus future work on this material class

Item URL in elib:https://elib.dlr.de/132867/
Document Type:Conference or Workshop Item (Speech)
Title:Techno-Economic Analysis of Thermochemical Storage for CSP Systems
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Buck, ReinerReiner.Buck (at) dlr.deUNSPECIFIED
Tescari, StefaniaStefania.Tescari (at) dlr.deUNSPECIFIED
Schmücker, Martinmartin.schmücker (at) dlr.deUNSPECIFIED
Preisner, Nicole CarinaNicole.Preisner (at) dlr.deUNSPECIFIED
Agrafiotis, ChristosChristos.Agrafiotis (at) dlr.deUNSPECIFIED
Date:October 2019
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Thermochemical storage, particle technology, solar tower
Event Title:25th SolarPACES Conference 2019
Event Location:Daegu, South Korea
Event Type:international Conference
Event Dates:1. - 4. Oct. 2019
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Concentrating Solar Thermal Technology
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 > Solartowersystems
Deposited By: Uhlig, Tamara
Deposited On:27 Dec 2019 15:22
Last Modified:27 Dec 2019 15:22

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