Título Power cycles integration in concentrated solar power plants with energy storage based on calcium looping
Autores ORTIZ DOMÍNGUEZ, CARLOS, Chacartegui, R. , Valverde, J. M. , Alovisio, A. , Becerra, J. A.
Publicación externa Si
Medio ENERGY CONVERSION AND MANAGEMENT
Alcance Article
Naturaleza Científica
Cuartil JCR 1
Cuartil SJR 1
Impacto JCR 6.37700
Impacto SJR 2.53700
Fecha de publicacion 01/10/2017
ISI 411537200067
DOI 10.1016/j.enconman.2017.03.029
Abstract Efficient, low-cost and environmentally friendly storage of thermal energy stands as a main challenge for large scale deployment of solar energy. This work explores the integration into concentrated solar power plants of the calcium looping process based upon the reversible carbonation calcination of calcium oxide for thermochemical energy storage. An efficient concentrated solar power-calcium looping integration would allow storing energy in the long term by calcination of calcium carbonate thus overcoming the hurdle of variable power generation from solar. After calcination, the stored products of the reaction (calcium oxide and carbon, dioxide) are brought together in a carbonator reactor whereby the high temperature exothermic reaction releases the stored energy for efficient power production when needed. This work analyses several power cycle configurations with the main goal of optimizing the performance of the overall system integration. Possible integration schemes are proposed in which power production is carried out directly (using a closed carbon dioxide Brayton power cycle) or indirectly (by means of a steam reheat Rankine cycle or a supercritical carbon dioxide Brayton cycle). The results obtained show that the highest plant efficiencies (up to 45-46%) are achievable using a closed carbon dioxide Brayton power cycle. (C) 2017 Elsevier Ltd. All rights reserved.
Palabras clave Global warming; Renewable energies; Concentrated Solar Power (CSP); Thermochemical Energy Storage (TCES); Calcium Looping (CaL); Power cycles; Supercritical CO2 power cycle
Miembros de la Universidad Loyola

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