1. Performance of alloy 600 in flowing commercial Cl salt at 600°-750°C.
- Author
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Pint, Bruce A., Kurley, J. Matthew, and Sulejmanovic, Dino
- Subjects
INCONEL ,HEAT storage ,SALT ,TENSILE tests ,SOLAR energy - 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 O
2- ) or dried (low H2 O) 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. [ABSTRACT FROM AUTHOR]- Published
- 2022
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