Reducing convective heat losses in solar dish cavity receivers through a modified air-curtain system

Song Yang*, Jun Wang, Peter D. Lund, Siyu Wang, Chuan Jiang

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

26 Citations (Scopus)

Abstract

Here we propose a forced air circulation system to reduce the convective heat loss across the aperture of a dish concentrator. The function of the proposed system was validated with computational fluid dynamics (CFD) simulations. Compared to a concentrator without such a system, the modified solar dish cavity receiver could clearly reduce the convective heat loss and its fluctuation in the receiver. In the best case studied, the convective heat losses could be suppressed by up to 58%. In addition, two types of air circulation modes (clockwise and anticlockwise) were compared, showing that the anticlockwise mode yields better performance.

Original languageEnglish
Pages (from-to)50-58
Number of pages9
JournalSolar Energy
Volume166
DOIs
Publication statusPublished - 15 May 2018
MoE publication typeA1 Journal article-refereed

Keywords

  • Air circulation system
  • Concentrator
  • Convective losses
  • Parabolic dish

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