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Thermal efficiency gains enabled by using CO2 mixtures in supercritical power cycles
dc.contributor.editor | Sánchez Martínez, David Tomás | es |
dc.creator | Crespi, Francesco Maria | es |
dc.creator | Rodríguez de Arriba, Pablo Enrique | es |
dc.creator | Sánchez Martínez, David Tomás | es |
dc.creator | Ayub, Abubakr | es |
dc.creator | Marcoberardino, Gioele Di | es |
dc.creator | Invernizzi, Costante Mario | es |
dc.creator | Sánchez Martínez, Gonzalo | es |
dc.creator | Iora, Paolo | es |
dc.creator | Bona, Daniele di | es |
dc.creator | Binotti, Marco | es |
dc.creator | Manzolini, Giampaolo | es |
dc.date.accessioned | 2021-10-11T11:23:53Z | |
dc.date.available | 2021-10-11T11:23:53Z | |
dc.date.issued | 2021-08-28 | |
dc.identifier.citation | Crespi, F.M., Rodríguez de Arriba, P.E., Sánchez Martínez, D.T., Ayub, A., Marcoberardino, G.Di., Invernizzi, C.M.,...,Manzolini, G. (2021). Thermal efficiency gains enabled by using CO2 mixtures in supercritical power cycles. Energy, 238, 121899-. | |
dc.identifier.issn | 0360-5442 | es |
dc.identifier.uri | https://hdl.handle.net/11441/126517 | |
dc.description.abstract | The present paper explores the utilisation of dopants to increase the critical temperature of Carbon Dioxide (sCO2) as a solution towards maintaining the high thermal efficiencies of sCO2 cycles even when ambient temperatures compromise their feasibility. To this end, the impact of adopting CO2-based mixtures on the performance of power blocks representative of Concentrated Solar Power plants is explored, considering two possible dopants: hexafluorobenzene (C6F6) and titanium tetrachloride (TiCl4). The analysis is applied to a well-known cycle -Recuperated Rankine- and a less common layout -Precompression-. The latter is found capable of fully exploiting the interesting features of these non-conventional working fluids, enabling thermal efficiencies up to 2.3% higher than the simple recuperative configuration. Different scenarios for maximum cycle pressure (250–300 bar), turbine inlet temperature (550–700 °C) and working fluid composition (10–25% molar fraction of dopant) are considered. The results in this work show that CO2-blends with 15–25%(v) of the cited dopants enable efficiencies well in excess of 50% for minimum cycle temperatures as high as 50 °C. To verify this potential gain, the most representative pure sCO2 cycles have been optimised at two minimum cycle temperatures (32 °C and 50°C), proving the superiority of the proposed blended technology in high ambient temperature applications. | es |
dc.description.sponsorship | European Union's Horizon 2020 - SCARABEUS project - N 814985 | es |
dc.description.sponsorship | University of Seville (Spain) Internal Research Programme (Plan Propio de Investigación) No 2019/00000359 | es |
dc.format | application/pdf | es |
dc.format.extent | 11 p. | es |
dc.language.iso | eng | es |
dc.publisher | Elsevier | es |
dc.relation.ispartof | Energy, 238, 121899-. | |
dc.subject | CO2 Blends | es |
dc.subject | CSP plant | es |
dc.subject | SCARABEUS project | es |
dc.subject | sCO2 Power | es |
dc.subject | Cycles Supercritical CO2 | es |
dc.title | Thermal efficiency gains enabled by using CO2 mixtures in supercritical power cycles | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Ingeniería Energética | es |
dc.relation.projectID | H2020 No.814985 | es |
dc.relation.projectID | 2019/00000359 | es |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S0360544221021472 | es |
dc.identifier.doi | 10.1016/j.energy.2021.121899 | es |
dc.contributor.group | Universidad de Sevilla. TEP137: Máquinas y Motores Térmicos | es |
dc.journaltitle | Energy | es |
dc.publication.volumen | 238 | es |
dc.publication.initialPage | 121899 | es |
Ficheros | Tamaño | Formato | Ver | Descripción |
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1-s2.0-S0360544221021472-main.pdf | 1.620Mb | [PDF] | Ver/ | |
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