Partial Separation of Carbonated Material to Improve the Efficiency of Calcium Looping for the Thermochemical Storage of Solar Energy

Sara Pascual, Claudio Tregambi, Francesca Di Lauro, Roberto Solimene, Piero Salatino, Fabio Montagnaro, Luis M. Romeo () and Pilar Lisbona
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Sara Pascual: Departamento de Ingeniería Mecánica, Escuela de Ingeniería y Arquitectura (EINA), Universidad de Zaragoza, C/María de Luna s/n, 50018 Zaragoza, Spain
Claudio Tregambi: Dipartimento di Ingegneria, Università degli Studi del Sannio, Piazza Roma 21, 82100 Benevento, Italy
Francesca Di Lauro: Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, Piazzale Tecchio 80, 80125 Napoli, Italy
Roberto Solimene: Istituto di Scienze e Tecnologie per l’Energia e la Mobilità Sostenibili, Consiglio Nazionale delle Ricerche, Piazzale Tecchio 80, 80125 Napoli, Italy
Piero Salatino: Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, Piazzale Tecchio 80, 80125 Napoli, Italy
Fabio Montagnaro: Dipartimento di Scienze Chimiche, Università degli Studi di Napoli Federico II, Complesso Universitario di Monte Sant’Angelo, 80126 Napoli, Italy
Luis M. Romeo: Departamento de Ingeniería Mecánica, Escuela de Ingeniería y Arquitectura (EINA), Universidad de Zaragoza, C/María de Luna s/n, 50018 Zaragoza, Spain
Pilar Lisbona: Departamento de Ingeniería Mecánica, Escuela de Ingeniería y Arquitectura (EINA), Universidad de Zaragoza, C/María de Luna s/n, 50018 Zaragoza, Spain

Energies, 2024, vol. 17, issue 6, 1-16

Abstract: Concentrating solar power (CSP) technology with thermal energy storage (TES) could contribute to achieving a net zero emissions scenario by 2050. Calcium looping (CaL) is one of the potential TES processes for the future generation of CSP plants coupled with highly efficient power cycles. Research on CaL as a system for thermochemical energy storage (TCES) has focused on efficiency enhancement based on hybridization with other renewable technologies. This work proposes a novel solid management system to improve the efficiency of a CaL TCES system. The inclusion of a solid–solid separation unit after the carbonation step could lead to energy and size savings. The role of segregation between carbonated and calcined material on plant requirements is assessed, given the experimental evidence on the potential classification between more and less carbonated particles. The results show lower energy (up to 12%) and size (up to 76%) demands when the circulation of less carbonated material through the CaL TCES system diminishes. Moreover, under a classification effectiveness of 100%, the retrieval energy could increase by 32%, and the stored energy is enhanced by five times. The present work can be a proper tool to set the design and size of a CaL TCES system with a partial separation of the carbonated material.

Keywords: calcium looping; thermochemical energy storage; concentrated solar power; segregation; carbonated solids (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
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