Heat transfer enhancement in a parabolic trough solar receiver using longitudinal fins and nanofluids

  • Benabderrahmane Amina /
  • Aminallah Miloud /
  • Laouedj Samir /
  • Benazza Abdelylah /
  • J. P. Solano
Journal ar
Journal of Thermal Science
  • Volumen: 25
  • Número: 5
  • Fecha: 01 octubre 2016
  • Páginas: 410-417
  • ISSN: 10032169
  • Tipo de fuente: Revista
  • DOI: 10.1007/s11630-016-0878-3
  • Tipo de documento: Artículo
  • Editorial: Science Press
© 2016, Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag Berlin Heidelberg. In this paper, we present a three dimensional numerical investigation of heat transfer in a parabolic trough collector receiver with longitudinal fins using different kinds of nanofluid, with an operational temperature of 573 K and nanoparticle concentration of 1% in volume. The outer surface of the absorber receives a non-uniform heat flux, which is obtained by using the Monte Carlo ray tracing technique. The numerical results are contrasted with empirical results available in the open literature. A significant improvement of heat transfer is derived when the Reynolds number varies in the range 2.57×104 ¿ Re ¿ 2.57×105, the tube-side Nusselt number increases from 1.3 to 1.8 times, also the metallic nanoparticles improve heat transfer greatly than other nanoparticles, combining both mechanisms provides better heat transfer and higher thermo-hydraulic performance.

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