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Ignition and Puffing Characteristics of Kerosene Droplets with Addition of Boron Particles and Water/Ethanol Under Sub-Atmospheric Pressure

Author

Listed:
  • Jie Huang

    (State Grid Zhejiang Electric Power Research Institute, Hangzhou 310014, China
    State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China)

  • Hongkun Lv

    (State Grid Zhejiang Electric Power Research Institute, Hangzhou 310014, China)

  • Jing Nie

    (School of Mechanical Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China)

  • Liwei Ding

    (State Grid Zhejiang Electric Power Research Institute, Hangzhou 310014, China)

  • Xinrui Xiong

    (State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China)

  • Kang Zhang

    (State Grid Zhejiang Electric Power Research Institute, Hangzhou 310014, China)

  • Jiaying Chen

    (State Grid Zhejiang Electric Power Research Institute, Hangzhou 310014, China
    State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China)

  • Zhenya Lai

    (State Grid Zhejiang Electric Power Research Institute, Hangzhou 310014, China
    State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China)

  • Zhihua Wang

    (State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China)

Abstract

To address the problems of the reduced evaporation rate and increased ignition time of kerosene droplets at sub-atmospheric pressures and high temperatures, boron and ethanol/water were selected as additives to be blended with RP-3 kerosene, respectively. The effects of different types of blended fuels on the evaporation, micro-explosion, and spontaneous ignition characteristics of RP-3 kerosene droplets were tested and compared using an independently designed, high-temperature, controlled-pressure experimental droplet system. A low-pressure environment (0.4 bar) promoted the high-intensity micro-explosion of RP-3/B and RP-3/water/ethanol droplets while reducing the number of puffing events. A comparative study of RP-3/B and RP-3/ethanol/water found that ethanol/water blended fuels had a higher micro-explosion intensity (1000–10,000 vs. 0.2–15 mm/s) and shorter droplet lifetimes and self-ignition times at low pressure. The 30%water fuel (30 vol.%water in water/ethanol sub-droplet) had the shortest ignition/breakup time, with an ignition time of 0.5715 s at 0.8 bar, 26.92% shorter than RP-3’s 0.782 s. This 30%water fuel mixture can increase the release rate of combustible vapors prior to ignition by inducing puffing and micro-explosions at high temperatures.

Suggested Citation

  • Jie Huang & Hongkun Lv & Jing Nie & Liwei Ding & Xinrui Xiong & Kang Zhang & Jiaying Chen & Zhenya Lai & Zhihua Wang, 2025. "Ignition and Puffing Characteristics of Kerosene Droplets with Addition of Boron Particles and Water/Ethanol Under Sub-Atmospheric Pressure," Energies, MDPI, vol. 18(5), pages 1-17, February.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:5:p:1025-:d:1595579
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    References listed on IDEAS

    as
    1. Jie Huang & Hongtao Zhang & Yong He & Yanqun Zhu & Zhihua Wang, 2022. "Evaporation, Autoignition and Micro-Explosion Characteristics of RP-3 Kerosene Droplets under Sub-Atmospheric Pressure and Elevated Temperature," Energies, MDPI, vol. 15(19), pages 1-16, September.
    2. Kim, Hyemin & Baek, Seung Wook, 2016. "Combustion of a single emulsion fuel droplet in a rapid compression machine," Energy, Elsevier, vol. 106(C), pages 422-430.
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