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Molten Chloride Salts for Thermal Energy Storage in Concentrated Solar Power Plants

Ding, Wenjin and Bonk, Alexander and Bauer, Thomas (2019) Molten Chloride Salts for Thermal Energy Storage in Concentrated Solar Power Plants. In: 11th International symposium on Molten Salts Chemistry and Technology. 11th International symposium on Molten Salts Chemistry and Technology (MS11), May 19 – 23, 2019, Orléans, France.

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Abstract

Recently, more and more attention is paid on applications of molten chloride salts in concentrated solar power (CSP) plants as thermal energy storage (TES) and heat transfer fluid (HTF) materials due to their high thermal stability limits (>800°C) and low prices, compared to the commercial TES/HTF materials in CSP - nitrate salts (decomposed at ~550°C). Over the course of the SunShot Initiative, the U.S. Department of Energy (DOE) has supported the molten chloride salt development for the next generation CSP (Gen-3 CSP) [1]. A higher TES/HTF operating temperature in CSP leads to higher efficiency of thermal to electrical energy conversion of the power block. However this causes additional challenges, particularly increased corrosiveness of metallic alloys used as containers and structural materials. This presentation outlines our current development progress of molten chloride salts as TES/HTF materials in the next generation CSP [2-6], including in-depth investigation on corrosion behaviors and mechanisms of metallic alloys in molten chlorides at operating temperatures of 500-800°C, and development of corresponding corrosion mitigation strategies towards realization of commercial applications of molten chlorides in CSP.

Item URL in elib:https://elib.dlr.de/132300/
Document Type:Conference or Workshop Item (Speech)
Title:Molten Chloride Salts for Thermal Energy Storage in Concentrated Solar Power Plants
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ding, WenjinWenjin.Ding (at) dlr.deUNSPECIFIED
Bonk, AlexanderAlexander.Bonk (at) dlr.deUNSPECIFIED
Bauer, ThomasThomas.Bauer (at) dlr.deUNSPECIFIED
Date:May 2019
Journal or Publication Title:11th International symposium on Molten Salts Chemistry and Technology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Thermal energy storage, corrosion control, molten chloride
Event Title:11th International symposium on Molten Salts Chemistry and Technology (MS11)
Event Location:Orléans, France
Event Type:international Conference
Event Dates:May 19 – 23, 2019
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: Ding, Wenjin
Deposited On:16 Dec 2019 15:06
Last Modified:16 Dec 2019 15:06

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