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Design method and optical performance research of a new vacuum absorber tube of parabolic trough collector
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Qiang Yu, Wenxi Shan1, Zihao Li1, Dongqiang Lei2
Renewable Energy Resources | 2024, 42(1) : 30 - 37
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Renewable Energy Resources | 2024, 42(1): 30-37
Design method and optical performance research of a new vacuum absorber tube of parabolic trough collector
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Qiang Yu, Wenxi Shan1, Zihao Li1, Dongqiang Lei2
Affiliations
  • 1 College of Information and Electrical Engineering China Agricultural University Beijing 100083 China
  • 2 Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100190 China
Published: 2024-01-20
Outline
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This study addresses challenges associated with conventional parabolic trough solar power systems, including limited operating temperature and excessive thermal stress caused by uneven energy flux density distribution on the vacuum absorber tube's surface. Rather than altering the parabolic trough collector's structure, we introduce an innovative vacuum absorber tube design. This design involves reducing the diameter of the inner metal tube, shifting it downward, and adding a hyperbolic secondary concentrator above it to enhance solar energy concentration and improve energy flux distribution on the inner metal tube's surface. Simulation results for the new vacuum absorber tube yield promising outcomes. Optically, this novel design increases the concentration ratio from 62 to 71 and improves the uniformity of energy flux distribution by 55.05%. Importantly, these improvements come at the cost of only a 1.88% reduction in optical efficiency compared to traditional vacuum absorber tubes. Consequently, these modifications offer a substantial boost to the overall performance of the parabolic trough collector.

parabolic trough collector  /  vacuum absorber tube  /  concentration ratio  /  solar flux distribution  /  optical efficiency
Qiang Yu, Wenxi Shan, Zihao Li, Dongqiang Lei. Design method and optical performance research of a new vacuum absorber tube of parabolic trough collector[J]. Renewable Energy Resources, 2024 , 42 (1) : 30 -37 .
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Article Info
  • Receive Date：2022-12-15
  • Online Date：2025-07-22
  • Published：2024-01-20
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  • Received：2022-12-15
Funding
Affiliations
    1 College of Information and Electrical Engineering China Agricultural University Beijing 100083 China
    2 Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100190 China
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小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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