A technical note on application of internally finned tubes in solar parabolic trough absorber pipes

Abánades Velasco, Alberto and Muñoz Antón, Javier (2011). A technical note on application of internally finned tubes in solar parabolic trough absorber pipes. "Solar Energy", v. 85 (n. 3); pp. 609-612. ISSN 0038-092X. https://doi.org/10.1016/j.solener.2011.01.002.

Description

Title: A technical note on application of internally finned tubes in solar parabolic trough absorber pipes
Author/s:
  • Abánades Velasco, Alberto
  • Muñoz Antón, Javier
Item Type: Article
Título de Revista/Publicación: Solar Energy
Date: 2011
ISSN: 0038-092X
Volume: 85
Subjects:
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 heterogeneous incoming heat flux in solar parabolic trough absorber tubes generates huge temperature difference in each pipe section. Helical internal fins can reduce this effect, homogenising the temperature profile and reducing thermal stress with the drawback of increasing pressure drop. Another effect is the decreasing of the outer surface temperature and thermal losses, improving the thermal efficiency of the collector. The application of internal finned tubes for the design of parabolic trough collectors is analysed with computational fluid dynamics tools. Our numerical approach has been qualified with the computational estimation of reported experimental data regarding phenomena involved in finned tube applications and solar irradiation of parabolic trough collector. The application of finned tubes to the design of parabolic trough collectors must take into account issues as the pressure losses, thermal losses and thermo-mechanical stress, and thermal fatigue. Our analysis shows an improvement potential in parabolic trough solar plants efficiency by the application of internal finned tubes.

More information

Item ID: 12695
DC Identifier: http://oa.upm.es/12695/
OAI Identifier: oai:oa.upm.es:12695
DOI: 10.1016/j.solener.2011.01.002
Official URL: http://www.sciencedirect.com/science/article/pii/S0038092X11000144
Deposited by: Memoria Investigacion
Deposited on: 27 Feb 2013 08:29
Last Modified: 21 Apr 2016 11:58
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