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Optimizing research on large-aperture parabolic trough condenser using two kinds of absorber tubes with reflector at 500 °C

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  • Gong, Jing-hu
  • Huang, Ji
  • Hu, Xiaojian
  • Wang, Jun
  • Lund, Peter D.
  • Gao, Caiyun

Abstract

Increasing the aperture of the parabolic trough concentrator (PTC) can effectively reduce costs and help promote. This paper proposed a circle and semicircle absorber tubes (AT) with a flat reflector (FR) in it for the large-aperture PTC system and the size of the AT was determined for the PTC with 8 m aperture width and 80° half rim-angle. The result shown the PTC system using a semi-circular AT with a diameter of 100 mm has the highest average thermal efficiency of 71.6% with DNI 400–1000 W/m2 at about 500 °Cand has best uniformity of 38.8%. However, its deformation is highest and 1.7 and 1.6 times other two ATs. Therefore, how to reduce the deflection has become a research direction in the future. Currently, the circular AT with a diameter of 80 mm is the most practical with an average thermal efficiency of 69.1% and a minimum deflection.

Suggested Citation

  • Gong, Jing-hu & Huang, Ji & Hu, Xiaojian & Wang, Jun & Lund, Peter D. & Gao, Caiyun, 2021. "Optimizing research on large-aperture parabolic trough condenser using two kinds of absorber tubes with reflector at 500 °C," Renewable Energy, Elsevier, vol. 179(C), pages 2187-2197.
    • Handle: RePEc:eee:renene:v:179:y:2021:i:c:p:2187-2197
    DOI: 10.1016/j.renene.2021.08.031
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    2. Abdulaziz Alanazi & Mohana Alanazi, 2023. "Multicriteria Decision-Making for Evaluating Solar Energy Source of Saudi Arabia," Sustainability, MDPI, vol. 15(13), pages 1-37, June.

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