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Molten Chloride Salts for Next Generation CSP Plants: Selection of Promising Chloride Salts & Study on Corrosion of Alloys in Molten Chloride Salts

Ding, Wenjin and Bonk, Alexander and Bauer, Thomas (2018) Molten Chloride Salts for Next Generation CSP Plants: Selection of Promising Chloride Salts & Study on Corrosion of Alloys in Molten Chloride Salts. In: AIP Conference Proceedings. AIP. SolarPaces 2018, 02-05 Okt. 2018, Casablanca, Morocco.

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Abstract

Molten chloride salts are promising high-temperature thermal energy storage (TES) and heat transfer fluid (HTF) materials in concentrated solar power (CSP) plants due to their high stability limits (>800°C) but low prices, compared to the commercial nitrate salt mixtures. However, severe corrosion of structural materials in contact with chloride salts is one of the most critical challenges to limit their applications at elevated temperatures. First, this work presents the properties (melting point, vapor pressure, heat capacity, hygroscopy) and large-scale prices of single chlorides and chloride mixtures for selecting the suitable molten chloride salt mixtures in next generation CSP. Then, based on our previous and current work, it discusses hot corrosion behaviors and mechanisms of metallic alloys in molten chloride salts, as well as corresponding corrosion mitigation strategies to develop the technology towards commercial applications of molten chlorides in next generation CSP.

Item URL in elib:https://elib.dlr.de/125886/
Document Type:Conference or Workshop Item (Speech)
Title:Molten Chloride Salts for Next Generation CSP Plants: Selection of Promising Chloride Salts & Study on Corrosion of Alloys in Molten Chloride Salts
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:October 2018
Journal or Publication Title:AIP Conference Proceedings
Refereed publication:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Publisher:AIP
Series Name:Conference Proceedings of SolarPaces 2018
Status:Accepted
Keywords:CSP, TES, molten chlorides
Event Title:SolarPaces 2018
Event Location:Casablanca, Morocco
Event Type:international Conference
Event Dates:02-05 Okt. 2018
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:12 Jul 2019 13:19
Last Modified:12 Jul 2019 13:19

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