IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v186y2019ics0360544219314719.html
   My bibliography  Save this article

Internal volume ratio optimization and performance analysis for single-screw expander in small-scale middle temperature ORC system

Author

Listed:
  • Wu, Yuting
  • Guo, Zhiyu
  • Lei, Biao
  • Shen, Lili
  • Zhi, Ruiping

Abstract

Single-screw expander (SSE) has the potential to meet the high pressure ratio condition in small-scale middle temperature ORC system. In this paper, variable internal volume ratio (from 3.00 to 8.00), new methods for calculating mass flow rate and friction power are integrated into the structure-based SSE thermodynamic model. And the maximum calculation error of mass flow rate, volume efficiency and shaft efficiency is 2.8%, 2.1% and 2.3% respectively compared with the experimental data. Herein, the influence of internal volume ratio on shaft efficiency, shaft power, volume efficiency, intake/exhaust pressure loss and friction loss are studied. The optimal internal volume ratio and shaft efficiency for five working fluids (R123, HFO-1336mzz(Z), R601, Cyclopentane, R245fa) are obtained when evaporation temperature changes from 373 K to 463 K. The results show that the optimal internal volume ratio is not the bigger the better when SSE works at high pressure ratio condition, because intake pressure loss also increases with the increase of internal volume ratio. The optimal shaft efficiency increases with the decrease of friction power, but the optimal internal volume ratio is almost unaffected. Furthermore, reducing intake pressure loss is a powerful means to improve the performance of SSE with large internal volume ratio.

Suggested Citation

  • Wu, Yuting & Guo, Zhiyu & Lei, Biao & Shen, Lili & Zhi, Ruiping, 2019. "Internal volume ratio optimization and performance analysis for single-screw expander in small-scale middle temperature ORC system," Energy, Elsevier, vol. 186(C).
    • Handle: RePEc:eee:energy:v:186:y:2019:i:c:s0360544219314719
    DOI: 10.1016/j.energy.2019.07.129
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544219314719
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2019.07.129?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.

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Dawo, Fabian & Eyerer, Sebastian & Pili, Roberto & Wieland, Christoph & Spliethoff, Hartmut, 2021. "Experimental investigation, model validation and application of twin-screw expanders with different built-in volume ratios," Applied Energy, Elsevier, vol. 282(PA).
    2. Wang, Chuang & Xing, Ziwen & Sun, Shizhong & He, Zhilong, 2020. "Loss analysis of oil-free twin-screw expanders for recovering energy in fuel cell systems by means of p-θ diagrams," Energy, Elsevier, vol. 201(C).
    3. Ping, Xu & Yang, Fubin & Zhang, Hongguang & Wang, Yan & Lei, Biao & Wu, Yuting, 2022. "Performance limits of the single screw expander in organic Rankine cycle with ensemble learning and hyperdimensional evolutionary many-objective optimization algorithm intervention," Energy, Elsevier, vol. 245(C).
    4. Calise, Francesco & Cappiello, Francesco Liberato & Dentice d’Accadia, Massimo & Vicidomini, Maria, 2020. "Energy and economic analysis of a small hybrid solar-geothermal trigeneration system: A dynamic approach," Energy, Elsevier, vol. 208(C).
    5. Guo, Zhiyu & Zhang, Cancan & Wu, Yuting & Lei, Biao & Yan, Dong & Zhi, Ruiping & Shen, Lili, 2020. "Numerical optimization of intake and exhaust structure and experimental verification on single-screw expander for small-scale ORC applications," Energy, Elsevier, vol. 199(C).
    6. Casari, Nicola & Fadiga, Ettore & Pinelli, Michele & Randi, Saverio & Suman, Alessio & Ziviani, Davide, 2020. "Investigation of flow characteristics in a single screw expander: A numerical approach," Energy, Elsevier, vol. 213(C).

    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:186:y:2019:i:c:s0360544219314719. 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.