IDEAS home Printed from https://ideas.repec.org/a/oup/ijlctc/v19y2024ip842-5..html
   My bibliography  Save this article

Thermo-economic analysis of an enhanced gekothermal system for power generation based on organic Rankine cycle

Author

Listed:
  • Yuan Zhao
  • Jun Gao
  • Yingxia Zheng
  • Bo Zhu
  • Guanqun Luo
  • Yuanjun Tang
  • Chao Ye

Abstract

The enhanced geothermal system (EGS) has been regarded as a promising means to exploit the abundant and low-carbon hot dry rock geothermal resources. In this work, two-stage EGSs with/without one-stage recuperative cycle for power generation based on organic Rankine cycle (ORC) were proposed, and their thermo-economic performance was evaluated, comparing to the one-stage EGS-ORC. The recuperative cycle improved the thermal performance of two-stage EGS and it had the highest thermal efficiency of 16.48%. Intermediate pressure and steam extraction ratio were important parameters that impacted the thermal performance of the two-stage EGS. The higher thermal efficiency was achieved at the intermediate pressure of 0.22 MPa and steam extraction ratio of 0.1. The two-stage EGS with one-stage recuperative cycle also had the lowest levelized cost of energy (LCOE) of $0.1895 kWh−1. According to the sensitivity analysis, the temperature of hot water and prices of electricity had the greatest impact on LCOE. The LCOE could be as low as $0.1704 kWh−1 if the temperature of hot water was 165.33 C. On the other hand, if the temperature of hot water was 149.58°C, the LCOE would be increased to $0.2179 kWh−1. The results from this study could provide the possible strategies to improve the overall thermo-economic performance of EGS-ORC.

Suggested Citation

  • Yuan Zhao & Jun Gao & Yingxia Zheng & Bo Zhu & Guanqun Luo & Yuanjun Tang & Chao Ye, 2024. "Thermo-economic analysis of an enhanced gekothermal system for power generation based on organic Rankine cycle," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 19, pages 842-845.
    • Handle: RePEc:oup:ijlctc:v:19:y:2024:i::p:842-5.
    as

    Download full text from publisher

    File URL: http://hdl.handle.net/10.1093/ijlct/ctad097
    Download Restriction: Access to full text is restricted to subscribers.
    ---><---

    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:oup:ijlctc:v:19:y:2024:i::p:842-5.. 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: Oxford University Press (email available below). General contact details of provider: https://academic.oup.com/ijlct .

    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.