IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v186y2019ics036054421931480x.html
   My bibliography  Save this article

An investigation of geometrical factors of multi-stage steam ejectors for air suction

Author

Listed:
  • Mohammadi, Ali

Abstract

Given the structural limitations of ejectors, in order to enhance the flexibility of them to suit various industries, several ejectors may be connected to each other serially. Moreover, steam ejectors are employed in different applications to draw air. In this study, through the agency of computational fluid dynamics, the geometric parameters of multi-stage steam ejectors for air suction were examined, the result of which was validated against experimental data. In this regard, considering an ejector with two stages, attempts were made to investigate the effects of geometric parameters including the diameters of the nozzle, the mixing chamber, the throat, and nozzle exit position (NXP) for either ejector. Accordingly, having evaluated the effects of the mentioned parameters, the most suitable values were selected to satisfy not only the proper functioning of each stage but the entrainment and compression ratio as well. The compression ratios obtained for the first and the second stages are 4.25 and 2.875, respectively which gives rise to a compression ratio of 12.219 for the multi-stage ejector. Eventually, for the final geometry of the ejectors, the Mach number, as well as pressure contour, were demonstrated and analyzed.

Suggested Citation

  • Mohammadi, Ali, 2019. "An investigation of geometrical factors of multi-stage steam ejectors for air suction," Energy, Elsevier, vol. 186(C).
    • Handle: RePEc:eee:energy:v:186:y:2019:i:c:s036054421931480x
    DOI: 10.1016/j.energy.2019.07.138
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S036054421931480X
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2019.07.138?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. Braimakis, Konstantinos, 2021. "Solar ejector cooling systems: A review," Renewable Energy, Elsevier, vol. 164(C), pages 566-602.

    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:s036054421931480x. 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.