Thermal Cycling Test of Solar Salt in Contact with Sustainable Solid Particles for Concentrating Solar Power (CSP) Plants

Marc Majó, Adela Svobodova-Sedlackova, Ana Inés Fernández, Alejandro Calderón () and Camila Barreneche ()
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Marc Majó: Department of Materials Science and Physical Chemistry, Universitat de Barcelona, Martí I Franqués 1-11, 08028 Barcelona, Spain
Adela Svobodova-Sedlackova: Department of Materials Science and Physical Chemistry, Universitat de Barcelona, Martí I Franqués 1-11, 08028 Barcelona, Spain
Ana Inés Fernández: Department of Materials Science and Physical Chemistry, Universitat de Barcelona, Martí I Franqués 1-11, 08028 Barcelona, Spain
Alejandro Calderón: Department of Materials Science and Physical Chemistry, Universitat de Barcelona, Martí I Franqués 1-11, 08028 Barcelona, Spain
Camila Barreneche: Department of Materials Science and Physical Chemistry, Universitat de Barcelona, Martí I Franqués 1-11, 08028 Barcelona, Spain

Energies, 2024, vol. 17, issue 10, 1-9

Abstract: Thermal energy storage (TES) is crucial in bridging the gap between energy demand and supply globally. Concentrated Solar Power (CSP) plants, employing molten salts for thermal storage, stand as an advanced TES technology. However, molten salts have drawbacks like corrosion, solidification at lower temperatures, and high costs. To overcome these limitations, research is focusing on alternative TES materials such as ceramic particles. These solids match molten salts in energy density and can withstand higher temperatures, making them well-suited for CSP systems. This study revolves around subjecting Solar Salt alone and Solar Salt alongside Volcanic Ash (VA) and Electric Arc Furnace Slag (EAFS) to a comprehensive thermal cycling test. This test is designed to assess the compatibility over the thermal cycles of the Solar Salt and the Solar Salt in contact with these solids in a CSP plant with a thermocline configuration. With a final thermal and chemical evaluation, our observations indicate that EAFS and VA demonstrate promising compatibility but an increase in the reduction rate of the Solar Salt due to a catalyst effect from EAFS in contact with the salt. No discernible alterations were detected in the properties of either the solid materials or solar salt when combined.

Keywords: CSP; TES; molten salts; solid particle storage; thermal cycling (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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