Autor(es): Audigié, Pauline ; Rodríguez Catela, Sergio ; Agüero, Alina ; Pedrosa, Fátima ; Paiva Luís, Teresa ; Cunha Diamantino, Teresa
Data: 2022
Identificador Persistente: http://hdl.handle.net/10400.9/4003
Origem: Repositório do LNEG
Assunto(s): Materials; High-temperature corrosion; Molten carbonates; Concentrated solar power; Thermal energy storage
ABSTRACT: One of the key challenges associated with the use of molten salts in Concentrated Solar Power (CSP) plants is to reduce or even suppress corrosion phenomena occurring at elevated temperatures. Molten nitrate mixtures are currently seen as the most viable storage medium for Thermal Energy Storage. But the upper temperature limit of the currently used “Solar Salt” is restricted by salt decomposition at ~580ºC. Prieto et al. estimated that increasing the temperature to 650ºC could increase the solar-to-electric conversion up to 18.5%, so alternative salts operating at higher temperature are required. Molten carbonates which are less corrosive and allow an operation up to 800ºC are an appealing breakthrough for future CSP plants.
