IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v353y2026ics0360544226010996.html

Experimental study on energy efficiency optimization of the cabinet-level variable-speed loop thermosyphon system for 5G TBS

Author

Listed:
  • Zhang, Yi
  • Zhang, Quan
  • Liu, Jiawang
  • Meng, Fanxi
  • Zhu, Yiqun
  • Zhong, Jiaxin
  • Li, Junshan
  • Ma, Xiaoteng

Abstract

Traditional thermosyphon systems (TS) for 5G telecommunication base stations (TBS) typically control fan on-off operating based on the return air temperature (Treturn), resulting in inefficient utilization of natural cold sources and reduced energy efficiency. Furthermore, temperature oscillation during TS startup compromises precise temperature control. To address these issues, this study developed a cabinet-level variable-speed loop thermosyphon system (VLTS) and established the 5G TBS simulated experimental platform. Through a series of experiments, the impact of evaporator fan speed (Ve) and condenser fan speed (Vc) on the system's operating performance was investigated. The influence of control parameter selection on the system's energy efficiency improvement is analyzed. In addition, based on experimental analysis, two energy efficiency optimization strategies are proposed: the variable-speed parameter optimization strategy (VPOS) and the high-low speed switching strategy (H-LSS). These strategies aim to enhance the system's EER while ensuring the thermal safety of IT equipment and preventing temperature oscillation. A comparison of the operational effects between the two strategies is also conducted. Results indicate that the Ve has a more significant impact on system performance than the Vc. Maintaining the Ve above 50% can effectively prevent system temperature oscillations. Compared to using Treturn as the control parameter, using the outlet air temperature of IT equipment (TL,o) as the control parameter can further enhance the system's energy efficiency. The optimized parameter combination (Ve 50%, Vc 40%) increases the system's EER to 38.8 through the VPOS. Both VPOS and H-LSS strategies can effectively avoid system temperature oscillation. Compared to the H-LSS, the VPOS improves the system's EER by 20.8% to 112.7%. For the H-LSS, raising the lower limit of the Treturn setpoint from 37 °C to 38 °C increases the system's EER by 12.8% to 29.9%.

Suggested Citation

  • Zhang, Yi & Zhang, Quan & Liu, Jiawang & Meng, Fanxi & Zhu, Yiqun & Zhong, Jiaxin & Li, Junshan & Ma, Xiaoteng, 2026. "Experimental study on energy efficiency optimization of the cabinet-level variable-speed loop thermosyphon system for 5G TBS," Energy, Elsevier, vol. 353(C).
    • Handle: RePEc:eee:energy:v:353:y:2026:i:c:s0360544226010996
    DOI: 10.1016/j.energy.2026.140994
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544226010996
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2026.140994?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

    for a different version of it.

    More about this item

    Keywords

    ;
    ;
    ;
    ;

    Statistics

    Access and download statistics

    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:353:y:2026:i:c:s0360544226010996. 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.

    We have no bibliographic references for this item. You can help adding them by using 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.