IDEAS home Printed from https://ideas.repec.org/a/eee/renene/v244y2025ics0960148125002770.html
   My bibliography  Save this article

Multigenerational performance analysis of a direct expansion PVT-HP system using year-long experimental data

Author

Listed:
  • Han, Youhua
  • Zhang, Jili
  • Ma, Liangdong
  • Hou, Baojun
  • Gong, Jian
  • Lv, Hui

Abstract

In this paper, a trifunctional direct expansion photovoltaic-thermal heat pump (PVT-HP) system was constructed to provide domestic hot water, photovoltaic power, and chilled water for an activity center of sports in Dalian, China. The thermoelectric evaluation indicators were proposed to unify the single thermal and electrical performances of the system. Then, year-round experiments were conducted to investigate the trigeneration performance of the system in typical seasons. The operation characteristics of the system were analyzed under typical weather conditions in detail. Afterward, the thermal and comprehensive performances of the PVT evaporator were analyzed. The performance curves of the PVT evaporator were determined. Finally, the results demonstrate that the average coefficient of heating performance of the system was 2.92 in winter, 3.69 in summer, and 3.46 in transition season. The average thermoelectric comprehensive efficiency of the system was 33.72 % throughout the year. The average coefficient of cooling performance of the system was 2.62 during nighttime operation in summer. Moreover, the average thermal efficiency and total thermoelectric efficiency of the PVT evaporator were 60.37 % and 70.12 %, respectively. This study can provide a practical reference for the application and evaluation of solar PVT heat pump systems in building retrofit projects.

Suggested Citation

  • Han, Youhua & Zhang, Jili & Ma, Liangdong & Hou, Baojun & Gong, Jian & Lv, Hui, 2025. "Multigenerational performance analysis of a direct expansion PVT-HP system using year-long experimental data," Renewable Energy, Elsevier, vol. 244(C).
    • Handle: RePEc:eee:renene:v:244:y:2025:i:c:s0960148125002770
    DOI: 10.1016/j.renene.2025.122615
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0960148125002770
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.renene.2025.122615?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:renene:v:244:y:2025:i:c:s0960148125002770. 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/renewable-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.