Proposal of a new design of central solar receiver for pressurised gases and supercritical fluids

Montes, M.J., Guédez, R., D'Souza, D., Linares, J.I., González-Aguilar, J. y Romero, M. . (2023) Proposal of a new design of central solar receiver for pressurised gases and supercritical fluids. International Journal of Thermal Sciences, Volume 194, December 2023, 108586


Título Proposal of a new design of central solar receiver for pressurised gases and supercritical fluids
Autor(es) Montes, M.J.
Guédez, R.
D'Souza, D.
Linares, J.I.
González-Aguilar, J.
Romero, M.
Materia(s) Ingeniería Industrial
Abstract This work presents a novel design of microchannel central receiver for pressurised gases and supercritical fluids in solar tower plants. It consists of a radial arrangement of vertical absorber panels that converge on the central axis of the tower. The absorber panels comprise compact structures, whose compactness is increased in one flow pass compared to the previous one, as the fluid is heated. This concept reduces radiation heat losses due to its light-trapping geometry and increases heat transfer to the thermal fluid without over penalising its pressure drop. For the receiver assessment, it has been developed a thermal resistance model characterising the fluid heating along the panel height and the temperature gradient between parallel channel rows of the compact structure across the panel thickness. Once the thermal and optical boundary conditions are defined, an optimisation analysis of the main geometrical parameters of the receiver has been accomplished. The receiver performance is evaluated by means of a global exergy efficiency referred to the solar subsystem, which computes the receiver heat losses, the fluid pressure drop and the optical efficiency of the heliostat field in which the receiver is integrated. For each parametric optimisation, the configuration that maximises this efficiency is identified.
Palabras clave Solar central receiver
Radial configuration
Light-trapping geometry
Increasing compactness
Supercritical fluid
Pressurised gases
Editor(es) Elsevier
Fecha 2023-07-10
Identificador bibliuned:DptoIE-ETSI-Articulos-Mjmontes-0005
http://e-spacio.uned.es/fez/view/bibliuned:DptoIE-ETSI-Articulos-Mjmontes-0005
DOI - identifier 10.1016/j.ijthermalsci.2023.108586
fecha fin de embargo 2025-07-11
Nombre de la revista International Journal of Thermal Sciences
Número de Volumen 194
Publicado en la Revista International Journal of Thermal Sciences, Volume 194, December 2023, 108586
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 International Journal of Thermal Sciences, is available online at the publisher's website: Elsevier, https://doi.org/10.1016/j.ijthermalsci.2023.108586

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Creado: Mon, 22 Jan 2024, 21:34:24 CET