IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v318y2025ics0360544225004001.html
   My bibliography  Save this article

Thermodynamic analysis of pump thermal energy storage system with different working fluid coupled biomass power plant

Author

Listed:
  • Wang, Furui
  • He, Qing

Abstract

To investigate the criteria for selecting working fluids in biomass power plants coupled with pump thermal energy storage (PTES) system, two system models, HPO (heat pump only) and CP (complete PTES), were developed. Sensitivity analyses were conducted, and the performance of five commonly used working fluids was compared. The results show that the key factor for HPO is the coefficient of performance (COP) of the heat pump cycle, while for CP, the critical factor is the net power output of the thermal cycle. Roundtrip efficiency can be improved by reducing the compressor inlet temperature, minimizing the heat exchanger terminal temperature difference, and enhancing isentropic efficiency. HPO roundtrip efficiency increases with rising ambient temperatures, whereas CP roundtrip efficiency decreases. High isentropic indices and high, stable specific heat capacities are crucial criteria for selecting working fluids. Exergy analysis reveals that exergy losses primarily occur in turbomachinery for all working fluids. After parameter optimization, the highest roundtrip efficiencies for HPO and CP are achieved with carbon dioxide (54.35 %) and argon (61.01 %), respectively. Helium provides the lowest compressor and expander investment costs, at $50.86/kW for HPO and $142.23/kW for CP.

Suggested Citation

  • Wang, Furui & He, Qing, 2025. "Thermodynamic analysis of pump thermal energy storage system with different working fluid coupled biomass power plant," Energy, Elsevier, vol. 318(C).
    • Handle: RePEc:eee:energy:v:318:y:2025:i:c:s0360544225004001
    DOI: 10.1016/j.energy.2025.134758
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544225004001
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2025.134758?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:318:y:2025:i:c:s0360544225004001. 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.