Article
Albero: An alternative natural material for solar energy storage by the calcium-looping process
Author/s | Moreno, Virginia
Arcenegui Troya, Juan Jesús Sánchez Jiménez, Pedro Enrique Perejón Pazo, Antonio Chacartegui, Ricardo Valverde Millán, José Manuel Pérez Maqueda, Luis Allan |
Department | Universidad de Sevilla. Departamento de Química Inorgánica Universidad de Sevilla. Departamento de Ingeniería Energética Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo |
Publication Date | 2022-07 |
Deposit Date | 2022-07-06 |
Published in |
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Abstract | Large-scale thermochemical energy storage (TCES) is gaining relevance as an alternative to current thermal energy storage systems in Concentrated Solar Power plants. Among the different systems, the reversible reaction ... Large-scale thermochemical energy storage (TCES) is gaining relevance as an alternative to current thermal energy storage systems in Concentrated Solar Power plants. Among the different systems, the reversible reaction between CaO and CO2 stands out due to the wide availability and low cost of the raw material: limestone. Direct solar absorption of the storage media would improve the efficiency of solar-to-thermal energy storage due to reduced thermal transfer barriers, but the solar optical absorption of CaCO3 is poor. In this work, we propose the use of a Ca-rich calcarenite sedimentary rock so-called albero as an alternative to limestone. We demonstrate that this reddish material exhibits an average solar absorptance that is approximately ten times larger than limestone. Moreover, the multicycle carbonation/calcination performance under different experimental conditions has been studied by thermogravimetry, and similar values to those exhibited for limestone have been obtained. Besides, the material is cheap (6 €/ton), and simulations showed that the use of this material would significantly improve the overall CaL-CSP efficiency at the industrial level. |
Project ID. | CTQ2017-83602- C2-1-R
CTQ2017-83602- C2-2-R PDC2021-121552- C21 FEDER P18-FR-1087 US-1262507 201960E092 202060I004 |
Citation | Moreno, V., Arcenegui Troya, J.J., Sánchez Jiménez, P.E., Perejón Pazo, A., Chacartegui, R., Valverde Millán, J.M. y Pérez Maqueda, L.A. (2022). Albero: An alternative natural material for solar energy storage by the calcium-looping process. Chemical Engineering Journal, 440, 135707. |
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