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Slag as an Inventory Material for Heat Storage in a Concentrated Solar Tower Power Plant: Design Studies and Systematic Comparative Assessment

Krüger, Michael and Haunstetter, Jürgen and Knödler, Philipp and Zunft, Stefan (2019) Slag as an Inventory Material for Heat Storage in a Concentrated Solar Tower Power Plant: Design Studies and Systematic Comparative Assessment. Applied Sciences, 9 (9), p. 1833. Multidisciplinary Digital Publishing Institute (MDPI). DOI: 10.3390/app9091833 ISSN 2076-3417

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Abstract

By using metallurgical slag from an electric arc furnace that is otherwise not recycled but deposited as an inventory material in thermal energy storage for concentrated solar power plants, it is possible to make a significant step forward in two transformation processes: energy and raw materials. As this type of slag has not been considered as an inventory material for this purpose, it is important to clarify fundamental questions about this low-cost material and its storage design. In this paper, design studies of slag-based thermal energy storage are carried out. Different slag-specific design concepts are developed, calculated and evaluated by a method based on established Management tools. Finally, concepts for further investigations are defined. The highest aptitude value and the lowest risk value are achieved by the vertical storage design with axial flow direction. Therefore, it is taken as the lead concept and will be considered in complete detail in further research. Also, a closer look, but not as detailed as the lead concept, is taken at the horizontal storage with axial flow and the vertical storage with radial flow direction.

Item URL in elib:https://elib.dlr.de/127334/
Document Type:Article
Title:Slag as an Inventory Material for Heat Storage in a Concentrated Solar Tower Power Plant: Design Studies and Systematic Comparative Assessment
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Krüger, MichaelMichael.Krueger (at) dlr.dehttps://orcid.org/0000-0002-2187-8678
Haunstetter, JürgenJuergen.Haunstetter (at) dlr.dehttps://orcid.org/0000-0003-0212-3592
Knödler, PhilippPhilipp.Knoedler (at) dlr.deUNSPECIFIED
Zunft, StefanStefan.Zunft (at) dlr.dehttps://orcid.org/0000-0002-8499-3067
Date:3 May 2019
Journal or Publication Title:Applied Sciences
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:No
Volume:9
DOI :10.3390/app9091833
Page Range:p. 1833
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
ISSN:2076-3417
Status:Published
Keywords:thermal energy storage (TES); slag; regenerator; concentrated solar power (CSP); quality function deployment (QFD); failure mode and effect analysis (FMEA)
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)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Deposited By: Krüger, Michael
Deposited On:03 May 2019 13:48
Last Modified:21 May 2019 05:02

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