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Thermal characteristics of a premixed impinging circular laminar-flame jet with induced swirl

Author

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  • Huang, X.Q.
  • Leung, C.W.
  • Chan, C.K.
  • Probert, S.D.

Abstract

A swirling flow has been induced in a premixed gas-fired impinging circular flame jet by adding two tangential air flows to the main axial air/fuel flow. The flame jet system was considered to be small-scale and operated under low-pressure, laminar flow conditions. The effects of Reynolds number of the air/butane mixture and nozzle-to-plate distance on the heating performance of the flame were studied and compared with the heat-flux distributions on an impingement plate under different operating conditions. The whole investigation was conducted under the stoichiometric air/fuel condition (i.e., equivalence ratio, [Phi]Â =Â 1) with the Reynolds number being varied from 800 to 1700, and nozzle-to-plate distance being selected between 1.5 and 4.0. The introduction of swirl to small-scale, low-pressure, laminar premixed gas-fired impinging circular flame jets is the method for enhancing their thermal performances. The heat-flux distribution on the impingement plate was more uniform and the flame temperatures essentially higher when compared with a similar flame jet system without induced swirl.

Suggested Citation

  • Huang, X.Q. & Leung, C.W. & Chan, C.K. & Probert, S.D., 2006. "Thermal characteristics of a premixed impinging circular laminar-flame jet with induced swirl," Applied Energy, Elsevier, vol. 83(4), pages 401-411, April.
    • Handle: RePEc:eee:appene:v:83:y:2006:i:4:p:401-411
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    Cited by:

    1. Maghrabie, Hussein M., 2021. "Heat transfer intensification of jet impingement using exciting jets - A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 139(C).
    2. Zhen, H.S. & Leung, C.W. & Cheung, C.S., 2011. "Emission of impinging swirling and non-swirling inverse diffusion flames," Applied Energy, Elsevier, vol. 88(5), pages 1629-1634, May.
    3. Chauhan, Ranchan & Singh, Tej & Thakur, N.S. & Kumar, Nitin & Kumar, Raj & Kumar, Anil, 2018. "Heat transfer augmentation in solar thermal collectors using impinging air jets: A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 82(P3), pages 3179-3190.
    4. Makmool, U. & Jugjai, S. & Tia, S. & Vallikul, P. & Fungtammasan, B., 2007. "Performance and analysis by particle image velocimetry (PIV) of cooker-top burners in Thailand," Energy, Elsevier, vol. 32(10), pages 1986-1995.
    5. Shang, Fengju & Hu, Longhua & Sun, Xiepeng & Wang, Qiang & Palacios, Adriana, 2017. "Flame downwash length evolution of non-premixed gaseous fuel jets in cross-flow: Experiments and a new correlation," Applied Energy, Elsevier, vol. 198(C), pages 99-107.
    6. Tu Thien Ngo & Tianjun Zhou & Junho Go & Hap Van Nguyen & Geun Sik Lee, 2019. "Improvement of the Steel-Plate Temperature during Preheating by Using Guide Vanes to Focus the Flame at the Outlet of a Gas Torch," Energies, MDPI, vol. 12(5), pages 1-21, March.
    7. Wan, Huaxian & Gao, Zihe & Ji, Jie & Li, Kaiyuan & Sun, Jinhua & Zhang, Yongming, 2017. "Experimental study on ceiling gas temperature and flame performances of two buoyancy-controlled propane burners located in a tunnel," Applied Energy, Elsevier, vol. 185(P1), pages 573-581.

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