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Solar combined cycle with high-temperature thermochemical energy storage.
- Source :
-
Energy Conversion & Management . Aug2021, Vol. 241, pN.PAG-N.PAG. 1p. - Publication Year :
- 2021
-
Abstract
- • The proposed SCC-TCES allows boost the solar share in combined cycles above 70%. • Receiver thermal-to-electric efficiency are in the range 45–50%. • Annual performance is evaluated through four solar radiation clusters from real data. • A 360° heliostats solar field with three cavity receivers (200 m tower) is designed. The present work proposes integrating a high-temperature thermochemical energy storage cycle to boost the solar contribution in solar combined cycles. The main feature of the plant is the possibility of storing solar energy at a very high temperature and releasing it on demand to drive the combined cycle in the absence of solar radiation. Based on the reversible calcination-carbonation of CaCO 3 /CaO, the Calcium-looping process is proposed since it allows power production above 900 °C by using cheap, non-toxic and widely available raw materials (i.e. limestone or dolomite). Based on an air-open and a CO 2 -closed combined cycle, two potential configurations are modelled and analysed, including designing a 360° solar field with a 200-meter tower. The novel solar combined cycle analyzed in the present work enhances the annual solar share above 50%, whilst the current state-of-the-art technology is below 15%. From actual solar irradiation data and clustering analysis, results show overall plant efficiencies over 45% (considering off-design performance) with a very high dispatchability, which justifies the interest in further developing this novel cycle. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01968904
- Volume :
- 241
- Database :
- Academic Search Index
- Journal :
- Energy Conversion & Management
- Publication Type :
- Academic Journal
- Accession number :
- 150715733
- Full Text :
- https://doi.org/10.1016/j.enconman.2021.114274