Proposal of a microchannel receiver for Fresnel technology to supply solar heat for industrial processes

Montes, M.J., Stojceska, V., Reay, D. y Ibarra, M. . (2023) Proposal of a microchannel receiver for Fresnel technology to supply solar heat for industrial processes. Case Studies in Thermal Engineering Volume 51, November 2023, 103559


Título Proposal of a microchannel receiver for Fresnel technology to supply solar heat for industrial processes
Autor(es) Montes, M.J.
Stojceska, V.
Reay, D.
Ibarra, M.
Materia(s) Ingeniería Industrial
Abstract This work is focused on the linear Fresnel technology to supply solar heat for industrial processes, proposing a new microchannel receiver design for pressurised gases. This design consists of two absorber panels converging at the focal line of the Fresnel system; each of these panels consists of a compact core fin structure attached to both front and back plates. The fluid flows through the receiver along its length in several passes, so that the compactness is constant and greater than in the previous pass. This arrangement improves heat transfer and, therefore, the cooling of the more thermally stressed areas of the panel, without over penalising the pressure drop. A thermal resistance model has been formulated to quantify the fluid heating along the panel length and the thermal gradient along the panel thickness. This model has been used to perform a thermo-exergy optimisation based on several characteristic parameters: the aperture half-angle of the cavity shaped by the two converging panels; and the channels dimensions in each pass of the panel. For each of these parameters, a maximum exergy efficiency has been obtained accounting for the receiver heat losses, the fluid pressure drop and the optical performance of the primary mirror field.
Palabras clave Linear fresnel reflector
Microchannel receiver
Solar heat for industrial processes
Convergent absorber panels
Light-trapping geometry
Pressurised gases
Editor(es) Elsevier
Fecha 2023-09-30
Formato application/pdf
Identificador bibliuned:DptoIE-ETSI-Articulos-Mjmontes-0002
http://e-spacio.uned.es/fez/view/bibliuned:DptoIE-ETSI-Articulos-Mjmontes-0002
DOI - identifier 10.1016/j.csite.2023.103559
fecha fin de embargo 2025-10-01
ISSN - identifier 2214-157X
Nombre de la revista Case Studies in Thermal Engineering
Número de Volumen 51
Número de Issue November 2023
Publicado en la Revista Case Studies in Thermal Engineering Volume 51, November 2023, 103559
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 Case Studies in Thermal Engineering, is available online at the publisher's website: Elsevier, https://doi.org/10.1016/j.csite.2023.103559
Notas adicionales La versión registrada de este artículo, publicado por primera vez enCase Studies in Thermal Engineering, está disponible en línea en el sitio web del editor:Elsevier, https://doi.org/10.1016/j.csite.2023.103559

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Creado: Mon, 22 Jan 2024, 20:13:13 CET