Steady-state thermal analysis of an innovative receiver for linear Fresnel reflectors

Abbas Cámara, Rubén and Muñoz Antón, Javier and Martínez-Val Peñalosa, José María (2012). Steady-state thermal analysis of an innovative receiver for linear Fresnel reflectors. "Applied Energy", v. 92 ; pp. 503-515. ISSN 0306-2619. https://doi.org/10.1016/j.apenergy.2011.11.070.

Description

Title: Steady-state thermal analysis of an innovative receiver for linear Fresnel reflectors
Author/s:
  • Abbas Cámara, Rubén
  • Muñoz Antón, Javier
  • Martínez-Val Peñalosa, José María
Item Type: Article
Título de Revista/Publicación: Applied Energy
Date: April 2012
Volume: 92
Subjects:
Freetext Keywords: CSP linear collectors; Fresnel; Steady state; Thermal analysis
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Energética y Fluidomecánica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The study of the performance of an innovative receiver for linear Fresnel reflectors is carried out in this paper, and the results are analyzed with a physics perspective of the process. The receiver consists of a bundle of tubes parallel to the mirror arrays, resulting on a smaller cross section for the same receiver width as the number of tubes increases, due to the diminution of their diameter. This implies higher heat carrier fluid speeds, and thus, a more effective heat transfer process, although it conveys higher pumping power as well. Mass flow is optimized for different tubes diameters, different impinging radiation intensities and different fluid inlet temperatures. It is found that the best receiver design, namely the tubes diameter that maximizes the exergetic efficiency for given working conditions, is similar for the cases studied. There is a range of tubes diameters that imply similar efficiencies, which can drive to capital cost reduction thanks to the flexibility of design. In addition, the length of the receiver is also optimized, and it is observed that the optimal length is similar for the working conditions considered. As a result of this study, it is found that this innovative receiver provides an optimum design for the whole day, even though impinging radiation intensity varies notably. Thermal features of this type of receiver could be the base of a new generation of concentrated solar power plants with a great potential for cost reduction, because of the simplicity of the system and the lower weigh of the components, plus the flexibility of using the receiver tubes for different streams of the heat carrier fluid.

More information

Item ID: 22284
DC Identifier: http://oa.upm.es/22284/
OAI Identifier: oai:oa.upm.es:22284
DOI: 10.1016/j.apenergy.2011.11.070
Official URL: http://www.sciencedirect.com/science/article/pii/S0306261911007768
Deposited by: Memoria Investigacion
Deposited on: 09 Feb 2014 10:13
Last Modified: 18 Aug 2017 11:07
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