Performance investigation of solar tower system using cascade supercritical carbon dioxide Brayton-steam Rankine cycle

e-Archivo Repository

Show simple item record Yang, Honglun Li, Jing Wang, Qiliang Wu, Lijun Rodríguez Sánchez, María de los Reyes Santana Santana, Domingo José Pei, Gang 2022-02-24T12:08:03Z 2022-12-01T00:00:05Z 2020-12-01
dc.identifier.bibliographicCitation Yang, H., Li, J., Wang, Q., Wu, L., Reyes Rodríguez-Sanchez, M., Santana, D. & Pei, G. (2020). Performance investigation of solar tower system using cascade supercritical carbon dioxide Brayton-steam Rankine cycle. Energy Conversion and Management, 225, 113430.
dc.identifier.issn 0196-8904
dc.description.abstract A novel solar power tower system that integrates with the cascade supercritical carbon dioxide Brayton-steam Rankine cycle is proposed to tackle the challenges of a simple supercritical carbon dioxide system in solar power systems. It provides a large storage capacity and can react to the fluctuation of solar radiation by adjusting the mass flow rate of molten salts in the receiver and heat exchanger. The fundamental is illustrated and comprehensive mathematical models are built. Energy and exergy analysis in the heat collection and power conversion processes is conducted. A comparison between the novel system and simple supercritical carbon dioxide system is made at a design plant output of 10 MW. Results indicated that: (1) the cascade system has a lower receiver inlet temperature, wider temperature difference across the receiver, higher specific work of the thermal energy storage system and lower mass flow rate of the working fluids. The solar-thermal conversion efficiency of the receiver is improved significantly. The heat gain of the tower receiver of the novel system is 53.4 MWh, which is about 7.1 MWh more than that of the simple system. The electricity production of the cascade system is improved by 9.5% at design point; (2) The novel system can generate constant electricity in a wide range of solar radiation and offer flexible control strategy for heat collection and storage. It is a promising option for central solar tower technology with a high efficiency, large storage capacity and short payback period.
dc.description.sponsorship This study was sponsored by the National Key R&D of China (2018YFB1900602), National Science Foundation of China (51776193, 51761145109) and the Fundamental Research Funds for the Central Universities (WK6030000133).
dc.format.extent 20
dc.language.iso eng
dc.publisher Elsevier
dc.rights © 2020 Elsevier Ltd. All rights reserved.
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.subject.other Supercritical carbon dioxide
dc.subject.other Brayton cycle
dc.subject.other Rankine cycle
dc.subject.other Solar tower
dc.subject.other Cascade system
dc.title Performance investigation of solar tower system using cascade supercritical carbon dioxide Brayton-steam Rankine cycle
dc.type article
dc.subject.eciencia Energías Renovables
dc.subject.eciencia Ingeniería Industrial
dc.subject.eciencia Ingeniería Mecánica
dc.rights.accessRights openAccess
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 113430-1
dc.identifier.publicationlastpage 113430-20
dc.identifier.publicationtitle Energy Conversion and Management
dc.identifier.publicationvolume 225
dc.identifier.uxxi AR/0000027087
 Find Full text

Files in this item

*Click on file's image for preview. (Embargoed files's preview is not supported)

The following license files are associated with this item:

This item appears in the following Collection(s)

Show simple item record