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Experimental investigation of the two-stage ignition delay and flame structure of pentanol/n-dodecane binary fuel

Author

Listed:
  • Yan, Feibin
  • Zhong, Wenjun
  • Xiang, Qilong
  • Pachiannan, Tamilselvan
  • Wang, Wenjun
  • He, Zhixia
  • Wang, Qian

Abstract

High thermal efficiency and low emissions are achievable with pentanol direct injection compression ignition, but there are issues of difficulty and unstable combustion at low loads. To solve the above problem, a binary fuel is obtained by blending high-activity n-dodecane with pentanol. In a constant-volume combustion chamber, the natural flame luminosity, schlieren, formaldehyde planar laser-induced fluorescence, and the OH* chemiluminescence methods were used to investigate the combustion characteristics of the two-stage ignition delay, the formaldehyde, and the flame liftoff length. The results show that, compared with n-dodecane, the two-stage ignition delay of pentanol/n-dodecane binary fuel is longer; and the initial time of the formaldehyde signal of pentanol/n-dodecane binary fuel is delayed by about 100 μs? Additionally, under all operating conditions, the initial position of formaldehyde varies concurrently with changes in the flame lift-off position, and the formaldehyde signals of the pentanol/n-dodecane binary fuel and n-dodecane gradually decrease downstream from the flame liftoff position. The pentanol/n-dodecane combustion model was built with experimental data, and it can be helpful in further numerical simulation.

Suggested Citation

  • Yan, Feibin & Zhong, Wenjun & Xiang, Qilong & Pachiannan, Tamilselvan & Wang, Wenjun & He, Zhixia & Wang, Qian, 2023. "Experimental investigation of the two-stage ignition delay and flame structure of pentanol/n-dodecane binary fuel," Energy, Elsevier, vol. 262(PB).
    • Handle: RePEc:eee:energy:v:262:y:2023:i:pb:s036054422202432x
    DOI: 10.1016/j.energy.2022.125546
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    References listed on IDEAS

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    1. Zhong, Wenjun & Pachiannan, Tamilselvan & He, Zhixia & Xuan, Tiemin & Wang, Qian, 2019. "Experimental study of ignition, lift-off length and emission characteristics of diesel/hydrogenated catalytic biodiesel blends," Applied Energy, Elsevier, vol. 235(C), pages 641-652.
    2. Wei, Liangjie & Cheung, C.S. & Huang, Zuohua, 2014. "Effect of n-pentanol addition on the combustion, performance and emission characteristics of a direct-injection diesel engine," Energy, Elsevier, vol. 70(C), pages 172-180.
    3. Shang, Weiwei & He, Zhixia & Wang, Qian & Cao, Jiawei & Li, Bei & Leng, Xianyin & Tamilselvan, P. & Li, Da, 2018. "Experimental and analytical study on capture spray liquid penetration and combustion characteristics simultaneously with Hydrogenated Catalytic Biodiesel/Diesel blended fuel," Applied Energy, Elsevier, vol. 226(C), pages 947-956.
    4. Xuan, Tiemin & Sun, Zhongcheng & EL-Seesy, Ahmed I. & Mi, Yonggang & Zhong, Wenjun & He, Zhixia & Wang, Qian & Sun, Jianbing & El-Batsh, Hesham M. & Cao, Jiawei, 2021. "An optical study on spray and combustion characteristics of ternary hydrogenated catalytic biodiesel/methanol/n-octanol blends; part П: Liquid length and in-flame soot," Energy, Elsevier, vol. 227(C).
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