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Solar Tower System Temperature Range Optimization for Reduced LCOE

Buck, Reiner and Giuliano, Stefano (2019) Solar Tower System Temperature Range Optimization for Reduced LCOE. In: AIP Conference Proceedings, 2126 (030010), 030010-1. SolarPACES 2018, 2.-5. Oct. 2018, Casablanca, Morocco. DOI: 10.1063/1.5117522

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Official URL: https://aip.scitation.org/doi/pdf/10.1063/1.5117522?class=pdf


New heat transfer and storage media offer for solar tower systems a much broader temperature range. Higher temperatures allow the integration of steam power cycles with increased efficiency. The present study evaluates modular solar tower plants using solid particles as heat transfer medium (HTM), allowing temperatures up to 1000°C. In a parameter study the influence of upper and lower HTM temperature 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 cost decrease of particle inventory, storage containment, and particle steam generator. This decrease is partially offset by an increase in heliostat field and tower cost. The results indicate that the use of solid particles for high efficiency steam power cycles offers unique advantages due to the wide temperature range of the particles.

Item URL in elib:https://elib.dlr.de/125254/
Document Type:Conference or Workshop Item (Speech)
Title:Solar Tower System Temperature Range Optimization for Reduced LCOE
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Buck, ReinerReiner.Buck (at) dlr.deUNSPECIFIED
Giuliano, StefanoStefano.Giuliano (at) dlr.deUNSPECIFIED
Date:26 July 2019
Journal or Publication Title:AIP Conference Proceedings
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1063/1.5117522
Page Range:030010-1
Keywords:Power Cycle; Solar Receiver; Heliostat Field; Particle Transport System
Event Title:SolarPACES 2018
Event Location:Casablanca, Morocco
Event Type:international Conference
Event Dates:2.-5. Oct. 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 16:12
Last Modified:19 Aug 2019 10:35

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