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Development of molten chloride salts for thermal energy storage in next generation concentrated solar power (CSP) plants

Ding, Wenjin and Bauer, Thomas (2018) Development of molten chloride salts for thermal energy storage in next generation concentrated solar power (CSP) plants. IFAM 2018, Sept. 16-19, 2018, Shengyang, China.

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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 salt mixtures (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. A higher TES/HTF operating temperature leads to higher efficiency of thermal to electrical energy conversion of the power block in CSP, however causes additional challenges, particularly increased corrosiveness of metallic alloys used as containers and structural materials. This presentation presents corrosion behaviors and mechanisms of metallic alloys in molten chlorides at operating temperatures (500-800°C), as well as corresponding corrosion mitigation strategies to realize the commercial applications of molten chlorides in CSP, based on our works in these fields.

Item URL in elib:https://elib.dlr.de/125794/
Document Type:Conference or Workshop Item (Speech)
Title:Development of molten chloride salts for thermal energy storage in next generation concentrated solar power (CSP) plants
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ding, WenjinWenjin.Ding (at) dlr.deUNSPECIFIED
Bauer, Thomasthomas.bauer (at) dlr.dehttps://orcid.org/0000-0003-4080-7944
Date:16 September 2018
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:concentrated solar power (CSP) plants, thermal energy storage (TES), heat transfer fluid (HTF), corrosion, alloys, corrosion mitigation strategies, molten chlorides
Event Title:IFAM 2018
Event Location:Shengyang, China
Event Type:international Conference
Event Dates:Sept. 16-19, 2018
Organizer:Department of Chemical Engineering, Metallurgy and Materials Engineering, Chinese Academy of Engineering
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:10 Jan 2019 15:41
Last Modified:10 Jan 2019 15:41

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