IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v325y2025ics0360544225017050.html
   My bibliography  Save this article

Efficiency enhancement of an all-weather self-supplied energy system based on passive radiative cooling and phase change energy storage

Author

Listed:
  • Wang, Ning
  • Zhou, Qingli
  • Zhang, Lei
  • Xu, Shuxi
  • Liu, Yuan
  • Jia, Hongzhi
  • Wang, Guanxue

Abstract

An all-weather self-supplied energy system with integrated radiative cooling/thermoelectric generators/phase change materials/photovoltaic (RC-TEG-PCM-PV) module is proposed in this paper. A sandwich structure is constructed to integrate the TEG within the gaps of passive RC and effective energy-storing PCM. The latent heat source for the lower PCM layer is supplied by sunlight focused onto the PV layer through folding solar reflectors. Through this setup, the RC-TEG-PCM-PV module establishes a dual mechanism of active heat storage and passive cooling for power generation. By employing the PV-RC system during the day and the PCM-RC system at night, cyclic switching for heat-to-power conversion is achieved. This process enables complementary dual-source energy harvesting for a consistent, all-weather power supply, effectively enhancing energy generation capacity. Results indicate that a maximum temperature difference of 5.4 K was reached across the TEG, with a peak output voltage of 480 mV observed during summer days. Additionally, an output voltage of 240 mV was attained during the nighttime phase transition, marking a 140 % increase compared to the RC-TEG system without PCM. Even in winter, the average output voltage of the proposed system remained above 120 mV during both day and night. A novel perspective for in-situ power generation scenarios is offered by the micro-energy harvesting technology proposed in this paper.

Suggested Citation

  • Wang, Ning & Zhou, Qingli & Zhang, Lei & Xu, Shuxi & Liu, Yuan & Jia, Hongzhi & Wang, Guanxue, 2025. "Efficiency enhancement of an all-weather self-supplied energy system based on passive radiative cooling and phase change energy storage," Energy, Elsevier, vol. 325(C).
    • Handle: RePEc:eee:energy:v:325:y:2025:i:c:s0360544225017050
    DOI: 10.1016/j.energy.2025.136063
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544225017050
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2025.136063?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.

    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:325:y:2025:i:c:s0360544225017050. 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.