IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v267y2023ics0360544222034077.html
   My bibliography  Save this article

Diffusion and its effects on soot production in the combustion of emulsified and nonemulsified fuel droplets

Author

Listed:
  • Kumar, Atul
  • Chen, Hsien-Wen
  • Yang, Shouyin

Abstract

Soot characteristics of emulsified and nonemulsified fuels and the effects of microexplosions on soot production were investigated by analyzing the soot extinction coefficient, burning rate, diffusion characteristics, and natural convection of fuels during droplet combustion. The experiments were conducted under normal atmospheric conditions, and the fuel droplets were supported with glass fiber. The soot characteristics are greatly influenced by diffusion. In this study the properties which constitutes the diffusion are analyzed experimentally. The results of synchronized schlieren and laser extinction setup collectively shows that the fuel soot thickness increases with the increment of the viscous forces of fuel. The hot boundary distance and soot thickness value collectively concludes that the fuel diffusion and air diffusion dominance is the biggest factor in soot production. Soot is minimized at a critical hot boundary distance at which air and fuel diffusion are stable, similar to that under an optimized stoichiometry. The results also reveal that Stefan flow area depends on the viscous and buoyant forces. The Richardson number results indicate that natural convection is affected by the microexplosion and changes from natural to mixed convection as water is added to the fuels.

Suggested Citation

  • Kumar, Atul & Chen, Hsien-Wen & Yang, Shouyin, 2023. "Diffusion and its effects on soot production in the combustion of emulsified and nonemulsified fuel droplets," Energy, Elsevier, vol. 267(C).
    • Handle: RePEc:eee:energy:v:267:y:2023:i:c:s0360544222034077
    DOI: 10.1016/j.energy.2022.126521
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544222034077
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2022.126521?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. Wu, M.S. & Yang, S.I., 2016. "Combustion characteristics of multi-component cedar bio-oil/kerosene droplet," Energy, Elsevier, vol. 113(C), pages 788-795.
    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. Han, Kai & Liu, Yu & Wang, Chengxin & Tian, Junjian & Song, Zhihui & Lin, Qizhao & Meng, Kesheng, 2021. "Experimental study on the evaporation characteristics of biodiesel-ABE blended droplets," Energy, Elsevier, vol. 236(C).
    2. Yang, S.I. & Wu, M.S. & Hsu, T.C., 2017. "Experimental and numerical simulation study of oxycombustion of fast pyrolysis bio-oil from lignocellulosic biomass," Energy, Elsevier, vol. 126(C), pages 854-867.
    3. Wang, Jigang & Qiao, Xinqi & Ju, Dehao & Wang, Lintao & Sun, Chunhua, 2019. "Experimental study on the evaporation and micro-explosion characteristics of nanofuel droplet at dilute concentrations," Energy, Elsevier, vol. 183(C), pages 149-159.
    4. Kong, Wenwen & Shen, Boxiong & Ma, Jiao & Kong, Jia & Feng, Shuo & Wang, Zhuozhi & Xiong, Lifu, 2022. "Pyrolysis of Spirulina platensis, Tetradesmus obliquus and Chlorella vulgaris by TG-FTIR and Py-GC/MS: Kinetic analysis and pyrolysis behaviour," Energy, Elsevier, vol. 244(PB).
    5. Lin, Bo-Jhih & Chen, Wei-Hsin & Hsieh, Tzu-Hsien & Ong, Hwai Chyuan & Show, Pau Loke & Naqvi, Salman Raza, 2019. "Oxidative reaction interaction and synergistic index of emulsified pyrolysis bio-oil/diesel fuels," Renewable Energy, Elsevier, vol. 136(C), pages 223-234.
    6. Yang, S.I. & Wu, M.S., 2017. "The droplet combustion and thermal characteristics of pinewood bio-oil from slow pyrolysis," Energy, Elsevier, vol. 141(C), pages 2377-2386.
    7. Kumar, Atul & Chen, Hsien-Wen & Yang, Shouyin, 2023. "Modeling microexplosion mechanism in droplet combustion: Puffing and droplet breakup," Energy, Elsevier, vol. 266(C).
    8. Park, Ho Young & Han, Karam & Yu, Geun Sil & Jang, Jihoon & Park, Sangbin & Kim, Hyun Hee & Min, Kyong-il & Kim, Jae-Kon, 2020. "Properties of bioliquids and their impacts on combustion and boiler operation," Energy, Elsevier, vol. 193(C).
    9. Han, Kai & Pang, Bo & Zhao, Changlu & Ni, Zhaojing & Qi, Zhengda, 2019. "An experimental study of the puffing and evaporation characteristics of acetone–butanol–ethanol (ABE) and diesel blend droplets," Energy, Elsevier, vol. 183(C), pages 331-340.
    10. Han, Kai & Pang, Bo & Ma, Xiaokang & Chen, Hao & Song, Guoqian & Ni, Zhaojing, 2017. "An experimental study of the burning characteristics of acetone–butanol–ethanol and diesel blend droplets," Energy, Elsevier, vol. 139(C), pages 853-861.
    11. Zhang, Xiaoqing & Li, Tie & Wang, Bin & Wei, Yijie, 2018. "Superheat limit and micro-explosion in droplets of hydrous ethanol-diesel emulsions at atmospheric pressure and diesel-like conditions," Energy, Elsevier, vol. 154(C), pages 535-543.

    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:267:y:2023:i:c:s0360544222034077. 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.