Title Increasing the solar share in combined cycles through thermochemical energy storage
Authors ORTIZ DOMÍNGUEZ, CARLOS, Chacartegui R., Valverde J.M., Carro A., Tejada C., Valverde J., ORTIZ DOMÍNGUEZ, CARLOS
External publication No
Means Energy Convers. Manage.
Scope Article
Nature Científica
JCR Quartile 1
SJR Quartile 1
Area International
Web https://www.scopus.com/inward/record.uri?eid=2-s2.0-85098603037&doi=10.1016%2fj.enconman.2020.113730&partnerID=40&md5=e529ee8be4c77d50eb3afd0a0f9b5fa0
Publication date 01/01/2021
Scopus Id 2-s2.0-85098603037
DOI 10.1016/j.enconman.2020.113730
Abstract The integration of Concentrating Solar Power (CSP) in combined cycles is a subjects of increasing attention. Combined cycles require high temperature at the gas turbine inlet (typically over 1000 °C), which hinders plant operation in the absence of direct solar radiation using currently commercial storage technologies based on molten salts (with a temperature limit around 600 °C). Thus, solar power share in current Integrated Solar Combined Cycles (ISCC) is typically lower than 20%, while most of the thermal power required is provided by natural gas. The present manuscript proposes the integration in combined cycles of a Thermochemical Energy Storage (TCES) system based on the Calcium-Looping process, which can release the stored energy at temperatures above 1000 °C. The storage charging step uses the heat provided by a CO2 stream previously heated in a high-temperature solar receiver. The configuration of the solar receiver-calciner is fundamental to determine the amount of storable energy. Results from the conceptual model simulation predict overall plant efficiencies above 45% (excluding solar side losses), suggesting a high potential for the development of this novel integration that would allow enhancing the solar share in combined cycles. © 2020 Elsevier Ltd
Keywords Energy storage; Integration; Natural gasoline plants; Solar equipment; Solar power plants; Solar radiation; Concentrating solar power; Direct solar radiation; High temperature; Integrated solar combin
Universidad Loyola members