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Impact of Solar Tower Design Parameters on xCO2-based Solar Tower Plants

Buck, Reiner and Giuliano, Stefano (2018) Impact of Solar Tower Design Parameters on xCO2-based Solar Tower Plants. DuEPublico, University Duisburg-Essen. 2nd European sCO2 Conference 2018, 30.-31. Aug. 2018, Essen, Germany. DOI: 10.17185/duepublico/46098

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Official URL: https://duepublico.uni-duisburg-essen.de/servlets/DocumentServlet?id=46098

Abstract

Integrating high efficiency sCO2 power cycles into solar tower plants is characterized by high upper temperature and low temperature spread of the cycle working fluid sCO2. New heat transfer media (HTM) are required, enabling higher temperatures and low cost storage. The present study evaluates modular solar tower plants using solid particles as HTM, allowing temperatures up to 1000°C. In a parameter study the influence of HTM temperatures on levelized cost of electricity (LCoE) is evaluated. The results show a significant impact of the HTM temperature selection, mainly governed by the HTM temperature difference. A high temperature difference results in reduced LCoE. The most important factors for this reduction are the reductions in particle inventory, storage containment, and particle-sCO2 heat exchanger. This reduction is partially offset by an increase in heliostat field and tower cost. The results indicate that the use of solid particles for solar high efficiency sCO2 power cycles offers unique advantages due to the wide temperature range of the particles.

Item URL in elib:https://elib.dlr.de/124468/
Document Type:Conference or Workshop Item (Speech)
Title:Impact of Solar Tower Design Parameters on xCO2-based Solar Tower Plants
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Buck, ReinerReiner.Buck (at) dlr.deUNSPECIFIED
Giuliano, StefanoStefano.Giuliano (at) dlr.deUNSPECIFIED
Date:August 2018
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.17185/duepublico/46098
Publisher:DuEPublico, University Duisburg-Essen
Status:Published
Keywords:Solar Tower Module; Thermal Storage; Particle Transport; Heliostat Field
Event Title:2nd European sCO2 Conference 2018
Event Location:Essen, Germany
Event Type:international Conference
Event Dates:30.-31. Aug. 2018
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:17 Dec 2018 10:26
Last Modified:31 Jul 2019 20:22

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