IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v14y2022i7p4257-d786435.html
   My bibliography  Save this article

Minimum Velocity of Impingement Fluidization for Parachute-Shaped Vegetables

Author

Listed:
  • Dariusz Góral

    (Department of Biological Bases of Food and Feed Technologies, Faculty of Production Engineering, University of Life Sciences in Lublin, 20-612 Lublin, Poland)

  • Tomasz Guz

    (Department of Engineering and Food Machines, Faculty of Production Engineering, University of Life Sciences in Lublin, 20-612 Lublin, Poland)

  • Urszula Pankiewicz

    (Department of Analysis and Food Quality Assessment, Faculty of Food Science and Biotechnology, University of Life Sciences in Lublin, 20-704 Lublin, Poland)

Abstract

Accurate calculation of the minimum fluidization velocity makes it possible to reduce raw material losses due to the use of excessively high or excessively low air velocities. This is particularly true for impingement fluidization, which is little studied, especially when treating parachute-shaped raw material. This paper focused on determining the drag coefficient for cauliflower florets, mushrooms, and broccoli. Analysis of the critical particle lift velocity showed that the lowest value of the drag coefficient was found for mushrooms (0.9). The parachute-shaped vegetables analyzed had a large scatter of drag coefficient values associated with their specific shape (standard deviation: mushrooms 0.10 broccoli 0.14, and for cauliflower 0.15). The measured mean values of the minimum fluidization velocity of the tested vegetables in the impingement fluidization method ranged from 6.9 m∙s −1 to 10.97 m∙s −1 . Application of the procedure recommended by Shilton and Narajan for calculating the minimum fluidization velocity on the basis of the shape coefficient ε resulted in large discrepancies between the calculated and experimental values (from 2.4 m∙s −1 to 3.8 m∙s −1 ).

Suggested Citation

  • Dariusz Góral & Tomasz Guz & Urszula Pankiewicz, 2022. "Minimum Velocity of Impingement Fluidization for Parachute-Shaped Vegetables," Sustainability, MDPI, vol. 14(7), pages 1-13, April.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:7:p:4257-:d:786435
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/14/7/4257/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/14/7/4257/
    Download Restriction: no
    ---><---

    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:gam:jsusta:v:14:y:2022:i:7:p:4257-:d:786435. 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: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    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.