IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v281y2023ics0360544223016754.html
   My bibliography  Save this article

Concentrating efficiency loss of heliostat with multiple sub-mirrors under wind loads

Author

Listed:
  • Ji, Baifeng
  • Qiu, Penghui
  • Xu, Fan
  • Liu, Qimin
  • Zhang, Xu
  • Zhang, Longya

Abstract

As an important design load for heliostat, wind load crucially affects the safety and concentrating performance. Herein, an evaluation method is proposed to study the impacts of wind loads on concentrating efficiency loss of the heliostat with multiple sub-mirrors. In particular, the computation method and evaluation index of the concentrating efficiency are established for the heliostat. Moreover, the finite element model of an on-site heliostat with multiple sub-mirrors is developed and the wind-induced responses of the heliostat are analyzed. Subsequently, the concentrating efficiency loss is investigated in detail when subjected to varying pitch angles and wind directions. Results show that the wind loads may induce the heliostat vibration to significantly decrease its concentrating efficiency. The imposition of wind loads makes the average concentrating efficiency decrease from 95.5% to 72.2%. The mean concentrating efficiency decreases with decreasing pitch angle, particularly at the sub-mirror edge. Furthermore, it is found that the increase of the wind direction angle enhances the concentrating efficiency loss of the heliostat when the pitch angle is small, while the influence is insignificant if the pitch angle is large. This work may provide theoretical guidance for evaluation and optimization of the concentrating efficiency loss of heliostat.

Suggested Citation

  • Ji, Baifeng & Qiu, Penghui & Xu, Fan & Liu, Qimin & Zhang, Xu & Zhang, Longya, 2023. "Concentrating efficiency loss of heliostat with multiple sub-mirrors under wind loads," Energy, Elsevier, vol. 281(C).
    • Handle: RePEc:eee:energy:v:281:y:2023:i:c:s0360544223016754
    DOI: 10.1016/j.energy.2023.128281
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544223016754
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2023.128281?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Bendjebbas, H. & Abdellah-ElHadj, A. & Abbas, M., 2016. "Full-scale, wind tunnel and CFD analysis methods of wind loads on heliostats: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 54(C), pages 452-472.
    2. Zang, Chuncheng & Wang, Zhifeng & Liu, Hong & Ruan, Yi, 2012. "Experimental wind load model for heliostats," Applied Energy, Elsevier, vol. 93(C), pages 444-448.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Talka, Ismo & Kolhe, Mohan & Hyttinen, Jarkko, 2017. "Impact of wind speed on ventilation performance within a container installed with photovoltaic inverter," Renewable Energy, Elsevier, vol. 113(C), pages 1480-1489.
    2. Zhao, Yi & Li, Ruibin & Feng, Lu & Wu, Yan & Niu, Jianlei & Gao, Naiping, 2022. "Boundary layer wind tunnel tests of outdoor airflow field around urban buildings: A review of methods and status," Renewable and Sustainable Energy Reviews, Elsevier, vol. 167(C).
    3. Zuo, Hongyan & Tan, Jiqiu & Wei, Kexiang & Huang, Zhonghua & Zhong, Dingqing & Xie, Fuchun, 2021. "Effects of different poses and wind speeds on wind-induced vibration characteristics of a dish solar concentrator system," Renewable Energy, Elsevier, vol. 168(C), pages 1308-1326.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:energy:v:281:y:2023:i:c:s0360544223016754. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.