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Experimental Demonstration of Deterministic Chaos in a Waste Oil Biodiesel Semi-Industrial Furnace Combustion System

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  • Shengyang Gao

    (State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China
    School of Mechanical and Electrical Engineering, Yunnan Agricultural University Kunming, Kunming 650500, China
    Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China)

  • Fashe Li

    (State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China
    Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China)

  • Qingtai Xiao

    (State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China
    Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
    School of Mathematical and Statistical Sciences, University of Texas Rio Grande Valley, Edinburg, TX 78541, USA)

  • Jianxin Xu

    (State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China
    Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China)

  • Huage Wang

    (State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China
    Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China)

  • Hua Wang

    (State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China
    Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China)

Abstract

In this paper, the nonlinear dynamic characteristics of the oxygen-enriched combustion of waste oil biodiesel in semi-industrial furnaces were tested by the power spectrum, phase space reconstruction, the largest Lyapunov exponents, and the 0-1 test method. To express the influences of the system parameters, experiments were carried out under different oxygen content conditions (21%, 25%, 28%, 31%, and 33%). Higher oxygen enrichment degrees contribute to finer combustion sufficiency, which produces flames with high luminance. Flame luminance and temperature can be represented by different gray scale values of flame images. The chaotic characteristics of gray scale time series under different oxygen enrichment degrees were studied. With increased oxygen content, the chaotic characteristics of flame gradually developed from weak chaos to strong chaos. Furthermore, the flame maintained a stable combustion process in a high-temperature region. The stronger the chaotic characteristics of the flame, the better the combustion effect. It can be seen that the change of initial combustion conditions has a great influence on the whole combustion process. The results of several chaotic test methods were consistent. Using chaotic characteristics to analyze the waste oil biodiesel combustion process can digitize the combustion process, find the best combustion state, optimize, and precisely control it.

Suggested Citation

  • Shengyang Gao & Fashe Li & Qingtai Xiao & Jianxin Xu & Huage Wang & Hua Wang, 2019. "Experimental Demonstration of Deterministic Chaos in a Waste Oil Biodiesel Semi-Industrial Furnace Combustion System," Energies, MDPI, vol. 12(23), pages 1-17, November.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:23:p:4479-:d:290747
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    References listed on IDEAS

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    1. Ding, Shun-Liang & Song, En-Zhe & Yang, Li-Ping & Litak, Grzegorz & Yao, Chong & Ma, Xiu-Zhen, 2016. "Investigation on nonlinear dynamic characteristics of combustion instability in the lean-burn premixed natural gas engine," Chaos, Solitons & Fractals, Elsevier, vol. 93(C), pages 99-110.
    2. Calder, Jorge & Roy, Murari Mohon & Wang, Wilson, 2018. "Performance and emissions of a diesel engine fueled by biodiesel-diesel blends with recycled expanded polystyrene and fuel stabilizing additive," Energy, Elsevier, vol. 149(C), pages 204-212.
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