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Techno-Economic Optimization of Molten Salt Concentrating Solar Power Parabolic Trough Plants With Packed-Bed Thermocline Tanks

Klasing, Freerk and Hirsch, Tobias and Odenthal, Christian and Bauer, Thomas (2020) Techno-Economic Optimization of Molten Salt Concentrating Solar Power Parabolic Trough Plants With Packed-Bed Thermocline Tanks. Journal of Solar Energy Engineering, 142 (5). American Society of Mechanical Engineers (ASME). doi: 10.1115/1.4046463. ISSN 0199-6231.

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Official URL: https://asmedigitalcollection.asme.org/solarenergyengineering/article/doi/10.1115/1.4046463/1074911/Techno-economic-optimization-of-molten-salt

Abstract

This study focuses on the techno-economic optimization of direct molten salt parabolic trough solar thermal power plants (STPPs) equipped with thermocline filler (TCF) thermal energy storage (TES). On one hand, this technology allows for cost reductions compared with state of the art two-tank (2T) TES. On the other hand, however, it leads to a performance decrease of the power block (PB) due to partial part load operation. To evaluate the dominating effect, annual simulations on a system level are performed for the TCF direct molten salt storage concept and, as a reference, for the two-tank direct molten salt storage concept. The levelized cost of electricity (LCOE) serves as a global measure to compare the two systems and to optimally size the TCF storage and the solar field (SF). The result of this study is that LCOE can theoretically be reduced by up to 8% by using a TCF instead of 2T storage system. The influence of temperature deviations from the nominal value at the end of charge or discharge, porosity and particle diameter of the TCF on LCOE, and system behavior is investigated in detail. This study further presents alternative operation strategies with improved system behavior and reveals determining factors for the integration of TCF storage into a system.

Item URL in elib:https://elib.dlr.de/134659/
Document Type:Article
Title:Techno-Economic Optimization of Molten Salt Concentrating Solar Power Parabolic Trough Plants With Packed-Bed Thermocline Tanks
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Klasing, FreerkFreerk.Klasing (at) dlr.dehttps://orcid.org/0000-0002-7079-9220
Hirsch, Tobiastobias.hirsch (at) dlr.dehttps://orcid.org/0000-0003-0063-0128
Odenthal, Christianchristian.odenthal (at) dlr.dehttps://orcid.org/0000-0003-0041-5751
Bauer, Thomasthomas.bauer (at) dlr.dehttps://orcid.org/0000-0003-4080-7944
Date:12 March 2020
Journal or Publication Title:Journal of Solar Energy Engineering
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:142
DOI :10.1115/1.4046463
Publisher:American Society of Mechanical Engineers (ASME)
ISSN:0199-6231
Status:Published
Keywords:parabolic trough, simulation, storage, system
HGF - Research field:Energy
HGF - Program:Storage and Cross-linked Infrastructures
HGF - Program Themes:Thermal Energy Storage
DLR - Research area:Energy
DLR - Program:E SP - Energy Storage
DLR - Research theme (Project):E - Thermochemical Processes (Storage) (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Institute of Solar Research > Solar High Temperature Technologies
Deposited By: Klasing, Freerk
Deposited On:24 Apr 2020 11:21
Last Modified:14 Jan 2021 10:02

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