Performance of alloy 600 in flowing commercial Cl salt at 600°-750°C

Bruce A. Pint; J. Matthew Kurley; Dino Sulejmanovic

doi:10.1063/5.0085929

Performance of alloy 600 in flowing commercial Cl salt at 600°-750°C

Bruce A. Pint, J. Matthew Kurley, Dino Sulejmanovic

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

4 Scopus citations

Abstract

For the next generation of concentrating solar power (CSP) plants, K-Mg-Na chloride salts are being explored as a potential higher temperature thermal storage medium. However, there are concerns about compatibility of structural alloys with the salt. To move beyond simple static pot compatibility experiments while a pumped salt loop is being constructed, thermal convection loops were constructed from ∼16wt.%Cr Ni-based alloy 600 and operated for 100-1000?h with peak temperatures of 700° and 750°C. These experiments indicated that alloy 600 was compatible up to 700°C with purified (i.e. low O2-) or dried (low H2O) industrial-sourced Mg-K-Na chloride salt with <10?μm/yr loss. Mass transfer was observed from the hot leg to the cold leg in each experiment and more surface deposits were observed with the dried salt. Post-exposure room temperature tensile tests showed minimal degradation of alloy 600 under these conditions.

Original language	English
Title of host publication	SolarPACES 2020 - 26th International Conference on Concentrating Solar Power and Chemical Energy Systems
Editors	Christoph Richter, Avi Shultz
Publisher	American Institute of Physics Inc.
ISBN (Electronic)	9780735441958
DOIs	https://doi.org/10.1063/5.0085929
State	Published - May 12 2022
Event	26th International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2020 - Freiburg, Virtual, Germany Duration: Sep 28 2020 → Oct 2 2020

Publication series

Name	AIP Conference Proceedings
Volume	2445
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	26th International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2020
Country/Territory	Germany
City	Freiburg, Virtual
Period	09/28/20 → 10/2/20

Funding

The authors would like to thank A. Willoughby, M. Stephens, T. Lowe, T. Jordan, V. Cox, M. Lance and R. Mayes at ORNL for assistance with the experimental work and J. R. Keiser and R. Pillai for comments on the manuscript. This research was funded by the U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy, Solar Energy Technology Program: CSP award number 33873. The input of L. Irwin as the technical project monitor is appreciated. This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).

Funders	Funder number
U.S. Department of Energy
Solar Energy Technologies Program	DE-AC05-00OR22725, 33873
Office of Energy Efficiency and Renewable Energy

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1063/5.0085929

Cite this

Pint, B. A., Kurley, J. M., & Sulejmanovic, D. (2022). Performance of alloy 600 in flowing commercial Cl salt at 600°-750°C. In C. Richter, & A. Shultz (Eds.), SolarPACES 2020 - 26th International Conference on Concentrating Solar Power and Chemical Energy Systems Article 020011 (AIP Conference Proceedings; Vol. 2445). American Institute of Physics Inc.. https://doi.org/10.1063/5.0085929

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title = "Performance of alloy 600 in flowing commercial Cl salt at 600°-750°C",

abstract = "For the next generation of concentrating solar power (CSP) plants, K-Mg-Na chloride salts are being explored as a potential higher temperature thermal storage medium. However, there are concerns about compatibility of structural alloys with the salt. To move beyond simple static pot compatibility experiments while a pumped salt loop is being constructed, thermal convection loops were constructed from ∼16wt.%Cr Ni-based alloy 600 and operated for 100-1000?h with peak temperatures of 700° and 750°C. These experiments indicated that alloy 600 was compatible up to 700°C with purified (i.e. low O2-) or dried (low H2O) industrial-sourced Mg-K-Na chloride salt with <10?μm/yr loss. Mass transfer was observed from the hot leg to the cold leg in each experiment and more surface deposits were observed with the dried salt. Post-exposure room temperature tensile tests showed minimal degradation of alloy 600 under these conditions.",

author = "Pint, {Bruce A.} and Kurley, {J. Matthew} and Dino Sulejmanovic",

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Pint, BA , Kurley, JM & Sulejmanovic, D 2022, Performance of alloy 600 in flowing commercial Cl salt at 600°-750°C. in C Richter & A Shultz (eds), SolarPACES 2020 - 26th International Conference on Concentrating Solar Power and Chemical Energy Systems., 020011, AIP Conference Proceedings, vol. 2445, American Institute of Physics Inc., 26th International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2020, Freiburg, Virtual, Germany, 09/28/20. https://doi.org/10.1063/5.0085929

Performance of alloy 600 in flowing commercial Cl salt at 600°-750°C. / Pint, Bruce A.; Kurley, J. Matthew ; Sulejmanovic, Dino.
SolarPACES 2020 - 26th International Conference on Concentrating Solar Power and Chemical Energy Systems. ed. / Christoph Richter; Avi Shultz. American Institute of Physics Inc., 2022. 020011 (AIP Conference Proceedings; Vol. 2445).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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N2 - For the next generation of concentrating solar power (CSP) plants, K-Mg-Na chloride salts are being explored as a potential higher temperature thermal storage medium. However, there are concerns about compatibility of structural alloys with the salt. To move beyond simple static pot compatibility experiments while a pumped salt loop is being constructed, thermal convection loops were constructed from ∼16wt.%Cr Ni-based alloy 600 and operated for 100-1000?h with peak temperatures of 700° and 750°C. These experiments indicated that alloy 600 was compatible up to 700°C with purified (i.e. low O2-) or dried (low H2O) industrial-sourced Mg-K-Na chloride salt with <10?μm/yr loss. Mass transfer was observed from the hot leg to the cold leg in each experiment and more surface deposits were observed with the dried salt. Post-exposure room temperature tensile tests showed minimal degradation of alloy 600 under these conditions.

AB - For the next generation of concentrating solar power (CSP) plants, K-Mg-Na chloride salts are being explored as a potential higher temperature thermal storage medium. However, there are concerns about compatibility of structural alloys with the salt. To move beyond simple static pot compatibility experiments while a pumped salt loop is being constructed, thermal convection loops were constructed from ∼16wt.%Cr Ni-based alloy 600 and operated for 100-1000?h with peak temperatures of 700° and 750°C. These experiments indicated that alloy 600 was compatible up to 700°C with purified (i.e. low O2-) or dried (low H2O) industrial-sourced Mg-K-Na chloride salt with <10?μm/yr loss. Mass transfer was observed from the hot leg to the cold leg in each experiment and more surface deposits were observed with the dried salt. Post-exposure room temperature tensile tests showed minimal degradation of alloy 600 under these conditions.

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Performance of alloy 600 in flowing commercial Cl salt at 600°-750°C

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