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Experimental study on evaporation and micro-explosion characteristics of biodiesel/n-propanol blended droplet

Author

Listed:
  • Huang, Xiaoyu
  • Wang, Jigang
  • Wang, Yuxin
  • Qiao, Xinqi
  • Ju, Dehao
  • Sun, Chunhua
  • Zhang, Qibin

Abstract

The evaporation and micro-explosion characteristics of biodiesel/n-propanol blended droplets at 573, 673 and 773 K ambient temperatures are studied using high-speed backlight imaging technique. The results show that the droplet evaporation is relatively stable at 573 K. However, micro-explosions occur at 673 and 773 K, the micro-explosion intensity increases with ambient temperature. The calculated superheat limit of n-propanol is 490 K. The blended droplet micro-explosion occurrence time is associated with the n-propanol concentration. The lower content of n-propanol, the earlier blended droplet micro-explosion occurs, and vice versa. The micro-explosion intensity and evaporation rate of the blended droplet first increase and then decrease as the n-propanol concentration increases. The micro-explosion delay time of the blended droplet first decreases and then increases with the increase of n-propanol concentration. Interestingly, the micro-explosion intensity, evaporation rate and micro-explosion delay time of droplet all reach the optimum value when the n-propanol concentration is 50%. Moreover, the oil membrane formation mechanisms of the soluble blended droplet with two different blended structures (n-propanol in biodiesel and biodiesel in n-propanol) are proposed.

Suggested Citation

  • Huang, Xiaoyu & Wang, Jigang & Wang, Yuxin & Qiao, Xinqi & Ju, Dehao & Sun, Chunhua & Zhang, Qibin, 2020. "Experimental study on evaporation and micro-explosion characteristics of biodiesel/n-propanol blended droplet," Energy, Elsevier, vol. 205(C).
    • Handle: RePEc:eee:energy:v:205:y:2020:i:c:s0360544220311385
    DOI: 10.1016/j.energy.2020.118031
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    References listed on IDEAS

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    1. Zhang, Yu & Huang, Ronghua & Huang, Yuhan & Huang, Sheng & Ma, Yinjie & Xu, Shijie & Zhou, Pei, 2018. "Effect of ambient temperature on the puffing characteristics of single butanol-hexadecane droplet," Energy, Elsevier, vol. 145(C), pages 430-441.
    2. 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.
    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.
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    Cited by:

    1. Mohd Fadzli Hamid & Yew Heng Teoh & Mohamad Yusof Idroas & Mazlan Mohamed & Shukriwani Sa’ad & Sharzali Che Mat & Muhammad Khalil Abdullah & Thanh Danh Le & Heoy Geok How & Huu Tho Nguyen, 2022. "A Review of the Emulsification Method for Alternative Fuels Used in Diesel Engines," Energies, MDPI, vol. 15(24), pages 1-26, December.
    2. Han, Kai & Lin, Qizhao & Liu, Minghou & Meng, Kesheng & Ni, Zhanshi & Liu, Yu & Tian, Junjian & Qiu, Zhicong, 2022. "Experimental study on the micro-explosion characteristics of biodiesel/1-pentanol and biodiesel/ methanol blended droplets," Renewable Energy, Elsevier, vol. 196(C), pages 261-277.
    3. Wang, Zhaowen & Yuan, Bo & Cao, Junhui & Huang, Yuhan & Cheng, Xiaobei & Wang, Yuzhou & Zhang, Xinhua & Liu, Hao, 2022. "A new shift mechanism for micro-explosion of water-diesel emulsion droplets at different ambient temperatures," Applied Energy, Elsevier, vol. 323(C).
    4. Rosli, Mohd A.F. & Aziz, A. Rashid A. & Ismael, Mhadi A. & Elbashir, Nimir O. & Zainal A., Ezrann Z. & Baharom, Masri & Mohammed, Salah E., 2021. "Experimental study of micro-explosion and puffing of gas-to-liquid (GTL) fuel blends by suspended droplet method," Energy, Elsevier, vol. 218(C).

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