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Heat transfer and thermodynamic performance of a parabolic trough receiver with centrally placed perforated plate inserts

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  • Mwesigye, Aggrey
  • Bello-Ochende, Tunde
  • Meyer, Josua P.

Abstract

In this paper, a numerical investigation of thermal and thermodynamic performance of a receiver for a parabolic trough solar collector with perforated plate inserts is presented. The analysis was carried out for different perforated plate geometrical parameters including dimensionless plate orientation angle, the dimensionless plate spacing, and the dimensionless plate diameter. The Reynolds number varies in the range 1.02×104⩽Re⩽7.38×105 depending on the heat transfer fluid temperature. The fluid temperatures used are 400K, 500K, 600K and 650K. The porosity of the plate was fixed at 0.65. The study shows that, for a given value of insert orientation, insert spacing and insert size, there is a range of Reynolds numbers for which the thermal performance of the receiver improves with the use of perforated plate inserts. In this range, the modified thermal efficiency increases between 1.2% and 8%. The thermodynamic performance of the receiver due to inclusion of perforated plate inserts is shown to improve for flow rates lower than 0.01205m3/s. Receiver temperature gradients are shown to reduce with the use of inserts. Correlations for Nusselt number and friction factor were also derived and presented.

Suggested Citation

  • Mwesigye, Aggrey & Bello-Ochende, Tunde & Meyer, Josua P., 2014. "Heat transfer and thermodynamic performance of a parabolic trough receiver with centrally placed perforated plate inserts," Applied Energy, Elsevier, vol. 136(C), pages 989-1003.
  • Handle: RePEc:eee:appene:v:136:y:2014:i:c:p:989-1003
    DOI: 10.1016/j.apenergy.2014.03.037
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    References listed on IDEAS

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    1. Wang, P. & Liu, D.Y. & Xu, C., 2013. "Numerical study of heat transfer enhancement in the receiver tube of direct steam generation with parabolic trough by inserting metal foams," Applied Energy, Elsevier, vol. 102(C), pages 449-460.
    2. Wu, Zhiyong & Li, Shidong & Yuan, Guofeng & Lei, Dongqiang & Wang, Zhifeng, 2014. "Three-dimensional numerical study of heat transfer characteristics of parabolic trough receiver," Applied Energy, Elsevier, vol. 113(C), pages 902-911.
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    4. Mwesigye, Aggrey & Bello-Ochende, Tunde & Meyer, Josua P., 2013. "Numerical investigation of entropy generation in a parabolic trough receiver at different concentration ratios," Energy, Elsevier, vol. 53(C), pages 114-127.
    5. He, Ya-Ling & Xiao, Jie & Cheng, Ze-Dong & Tao, Yu-Bing, 2011. "A MCRT and FVM coupled simulation method for energy conversion process in parabolic trough solar collector," Renewable Energy, Elsevier, vol. 36(3), pages 976-985.
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    7. Le Roux, W.G. & Bello-Ochende, T. & Meyer, J.P., 2011. "Operating conditions of an open and direct solar thermal Brayton cycle with optimised cavity receiver and recuperator," Energy, Elsevier, vol. 36(10), pages 6027-6036.
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