Artículo
The Calcium-Looping (CaCO3/CaO) Process for Thermochemical Energy Storage in Concentrating Solar Power Plants
Autor/es | Ortiz Domínguez, Carlos
Valverde Millán, José Manuel Chacartegui, Ricardo Pérez-Maqueda, Luis Allan Giménez Gavarrell, Pablo |
Departamento | Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo Universidad de Sevilla. Departamento de Ingeniería Energética |
Fecha de publicación | 2019 |
Fecha de depósito | 2019-06-28 |
Publicado en |
|
Resumen | Energy storage based on thermochemical systems is gaining momentum as potential alternative to molten salts in Concentrating Solar Power (CSP) plants. This work is a detailed review about the promising integration of a ... Energy storage based on thermochemical systems is gaining momentum as potential alternative to molten salts in Concentrating Solar Power (CSP) plants. This work is a detailed review about the promising integration of a CaCO3/CaO based system, the so-called Calcium-Looping (CaL) process, in CSP plants with tower technology. The CaL process relies on low cost, widely available and non-toxic natural materials (such as limestone or dolomite), which are necessary conditions for the commercial expansion of any energy storage technology at large scale. A comprehensive analysis of the advantages and challenges to be faced for the process to reach a commercial scale is carried out. The review includes a deep overview of reaction mechanisms and process integration schemes proposed in the recent literature. Enhancing the multicycle CaO conversion is a major challenge of the CaL process. Many lab-scale analyses carried out show that residual effective CaO conversion is highly dependent on the process conditions and CaO precursors used, reaching values as different as 0.07-0.82. The selection of the optimal operating conditions must be based on materials, process integration, technology and economics aspects. Global plant efficiencies over 45% (without considering solar-side losses) show the interest of the technology. Furthermore, the technological maturity and potential of the process is assessed. The direction towards which future works should be headed is discussed. |
Identificador del proyecto | CTQ2014-52763-C2
CTQ2017- 83602-C2 Grant agreement No 727348 |
Cita | Ortiz Domínguez, C., Valverde Millán, J.M., Chacartegui, R., Pérez-Maqueda, L.A. y Giménez Gavarrell, P. (2019). The Calcium-Looping (CaCO3/CaO) Process for Thermochemical Energy Storage in Concentrating Solar Power Plants. Renewable and Sustainable Energy Reviews |
Ficheros | Tamaño | Formato | Ver | Descripción |
---|---|---|---|---|
preprint_CSP-CaL.pdf | 861.3Kb | [PDF] | Ver/ | Versión Preprint |