Energy and exergy analysis of microchannel central solar receivers for pressurised fluids

D’Souza, D., Montes, M.J., Romero, M. y González-Aguilar, J. . (2023) Energy and exergy analysis of microchannel central solar receivers for pressurised fluids. Applied Thermal Engineering, 219, Part B, 25 January 2023, 119638

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Título Energy and exergy analysis of microchannel central solar receivers for pressurised fluids
Autor(es) D’Souza, D.
Montes, M.J.
Romero, M.
González-Aguilar, J.
Materia(s) Ingeniería Industrial
Abstract Within the new generation of advanced central solar receivers, microchannel pressurised gas receivers are emerging as reliable and efficient alternatives to operate at high temperatures and pressures. This paper presents an optimisation and comparative analysis of different compact plate-fin type structures, constituting the receiver’s absorber panels, classified according to the type of fin arrangement inside: plain rectangular, plain triangular, wavy, offset strip, perforated, and louvred fin. A versatile thermo-fluid receiver model is implemented, allowing simple variation of characteristic geometric parameters of each structure. Exergy efficiency is chosen as the optimisation function, as it considers both heat and pressure losses. The framework of the analysis is set by the receiver’s boundary conditions, operating at the design point conditions of a solar thermal power plant. For each compact structure, the optimal configuration is determined, providing interesting findings that have not been reported in the state-of-the-art to date. Although all geometries show good thermal performance, the perforated and plain rectangular configurations demonstrate the best exergy efficiencies of 59.21% and 58.80%, respectively, favouring taller and narrower channels. This analysis methodology could be seamlessly extrapolated to other gases and working conditions, owing to the thermo-fluid model’s versatility, to reveal the optimal configuration for each case.
Palabras clave Microchannel
Exergy efficiency
Energy efficiency
Solar thermal power
Solar receiver
Pressurised fluids
Editor(es) Elsevier
Fecha 2023-01-25
Identificador bibliuned:DptoIE-ETSI-Articulos-Mjmontes-0001
http://e-spacio.uned.es/fez/view/bibliuned:DptoIE-ETSI-Articulos-Mjmontes-0001
DOI - identifier 10.1016/j.applthermaleng.2022.119638
fecha fin de embargo 2025-01-25
ISSN - identifier 1873-5606
Nombre de la revista Applied Thermal Engineering
Número de Volumen 219
Número de Issue Part B
Publicado en la Revista Applied Thermal Engineering, 219, Part B, 25 January 2023, 119638
Idioma eng
Versión de la publicación acceptedVersion
Tipo de recurso Article
Derechos de acceso y licencia http://creativecommons.org/licenses/by-nc-nd/4.0
info:eu-repo/semantics/embargoedAccess
Tipo de acceso Acceso embargado
Notas adicionales The registered version of this article, first published in Applied Thermal Engineering, is available online at the publisher's website: Elsevier, https://doi.org/10.1016/j.applthermaleng.2022.119638
Notas adicionales La versión registrada de este artículo, publicado por primera vez en Applied Thermal Engineering, está disponible en línea en el sitio web del editor: Elsevier, https://doi.org/10.1016/j.applthermaleng.2022.119638

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Creado: Thu, 18 Jan 2024, 01:58:13 CET