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Design, optimization and optical performance study of tripod heliostat for solar power tower plant

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  • Thalange, Vinayak C.
  • Dalvi, Vishwanath H.
  • Mahajani, Sanjay M.
  • Panse, Sudhir V.
  • Joshi, Jyeshtharaj B.
  • Patil, Raosaheb N.

Abstract

Heliostats account for about 50% of the capital cost of power towers. In conventional heliostats with vertical pedestals and azimuth-elevation drives, the support structure contributes 40–50% of this cost due to heavy cantilever arms required by the large spanning structures. Additional costs are imposed by costly, difficult to maintain drive mechanisms. Here we show that a tripod heliostat can substantially address these shortcomings. We have presented the protocol and results of systematic structural analysis of heliostats with aperture areas of 62 and 100 m2. We have included effects of shape on load reaction and structure cost. An in-house ray-tracing software is incorporated to estimate the performance penalties due to deformation under gravity and wind loads. The analysis shows that the additional energy collection by a less-stiff, larger heliostat more than offsets the spillage due to the greater deformation of the same.

Suggested Citation

  • Thalange, Vinayak C. & Dalvi, Vishwanath H. & Mahajani, Sanjay M. & Panse, Sudhir V. & Joshi, Jyeshtharaj B. & Patil, Raosaheb N., 2017. "Design, optimization and optical performance study of tripod heliostat for solar power tower plant," Energy, Elsevier, vol. 135(C), pages 610-624.
    • Handle: RePEc:eee:energy:v:135:y:2017:i:c:p:610-624
    DOI: 10.1016/j.energy.2017.06.116
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    References listed on IDEAS

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    1. Yao, Zhihao & Wang, Zhifeng & Lu, Zhenwu & Wei, Xiudong, 2009. "Modeling and simulation of the pioneer 1MW solar thermal central receiver system in China," Renewable Energy, Elsevier, vol. 34(11), pages 2437-2446.
    2. Vishwanath Haily Dalvi & Sudhir V. Panse & Jyeshtharaj B. Joshi, 2015. "Solar thermal technologies as a bridge from fossil fuels to renewables," Nature Climate Change, Nature, vol. 5(11), pages 1007-1013, November.
    3. Wei, Xiudong & Lu, Zhenwu & Wang, Zhifeng & Yu, Weixing & Zhang, Hongxing & Yao, Zhihao, 2010. "A new method for the design of the heliostat field layout for solar tower power plant," Renewable Energy, Elsevier, vol. 35(9), pages 1970-1975.
    4. Ummadisingu, Amita & Soni, M.S., 2011. "Concentrating solar power – Technology, potential and policy in India," Renewable and Sustainable Energy Reviews, Elsevier, vol. 15(9), pages 5169-5175.
    5. Meiser, S. & Schneider, S. & Lüpfert, E. & Schiricke, B. & Pitz-Paal, R., 2017. "Evaluation and assessment of gravity load on mirror shape and focusing quality of parabolic trough solar mirrors using finite-element analysis," Applied Energy, Elsevier, vol. 185(P2), pages 1210-1216.
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    Cited by:

    1. Ashley, Thomas & Carrizosa, Emilio & Fernández-Cara, Enrique, 2019. "Heliostat field cleaning scheduling for Solar Power Tower plants: A heuristic approach," Applied Energy, Elsevier, vol. 235(C), pages 653-660.
    2. Jian, Yan & Peng, You Duo & Liu, Yong Xiang, 2022. "An optical-mechanical integrated modeling method of solar dish concentrator system for optical performance analysis under service load," Energy, Elsevier, vol. 261(PB).

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