IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v274y2023ics0360544223008113.html
   My bibliography  Save this article

Temperature effect on thermal conductivity of oxidised coal associated with its predictive model during coal pyrolysis

Author

Listed:
  • Yin, Lan
  • Xiao, Yang
  • Li, Qing-Wei
  • Tian, Yuan
  • Shu, Chi-Min

Abstract

To explore the heat transfer characteristics of oxidised coal, four kinds of bituminous coal from Shilawusu coalmine (SLWS), Huangling coalmine (HL), Ewirgol coalmine (AWEG), and Sangshuping coalmine (SSP) respectively, were collected and oxidised at 80, 120, 150, and 200 °C in air. The thermal conductivity of each coal were measured by laser flash apparatus with 30–300 °C. Main proximate analysis indexes influencing the thermal conductivity of oxidised coal were received by grey correlation method. A predictive model was established to forecast the thermal conductivity of oxidised coal. The results indicated that, when the temperature enhanced from 30 to 300 °C, the thermal conductivity of each coal gradually increased, the thermal conductivity for SLWS, HL, AWEG, and SSP increased by 12.0–12.6%, 9.2–10.9%, 7.0–9.6%, and 7.6–8.7%. At fixed temperature, the thermal conductivity of each coal increased linearly, which was markedly affected by the change of fixed carbon, ash, and volatiles in coal. Furthermore, a predictive model was established to forecast accurately the thermal conductivity of oxidised coal with a low relative error. Such findings can deepen the understanding of heat transfer in oxidised coal, and provide a theoretical basis in the prevention and intervention of coal fires.

Suggested Citation

  • Yin, Lan & Xiao, Yang & Li, Qing-Wei & Tian, Yuan & Shu, Chi-Min, 2023. "Temperature effect on thermal conductivity of oxidised coal associated with its predictive model during coal pyrolysis," Energy, Elsevier, vol. 274(C).
    • Handle: RePEc:eee:energy:v:274:y:2023:i:c:s0360544223008113
    DOI: 10.1016/j.energy.2023.127417
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544223008113
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2023.127417?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.

    References listed on IDEAS

    as
    1. Liu, Qiqi & Sun, Lulu & Liu, Zhenyi & Wang, Gang & Ma, Jiayu, 2023. "Effects of air volume and pre-oxidation on re-ignition characteristics of bituminous coal," Energy, Elsevier, vol. 265(C).
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Liu, Qiqi & Sun, Lulu & Zhang, Yanbo & Liu, Zhenyi & Ma, Jiayu, 2023. "Effects of water immersion and pre-oxidation on re-ignition characteristics of non-caking coal," Energy, Elsevier, vol. 282(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:274:y:2023:i:c:s0360544223008113. 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.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with 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.