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Effects of porous media on partially premixed combustion and heat transfer in meso-scale burners fuelled with ethanol

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  • Chen, Xinjian
  • Li, Junwei
  • Zhao, Dan
  • Rashid, Muhammad Tahir
  • Zhou, Xinyuan
  • Wang, Ningfei

Abstract

Porous media (PM) have the potential to enhance the flame stability and improve thermal performance in a micro/meso-scale burner. In this work, zirconia foam and high-porosity nickel foam are used in the meso-scale burners and partially premixed submerged combustion of liquid ethanol is achieved. An experimental investigation of the effects of foamed PM on flame structure, detailed temperature distributions, emissions, and thermal performance is undertaken. A blue flame can be observed in the nickel foam and the transient features of flame front is obtained. The flame front propagates intermittently when the combustion zone moves upstream. The maximum instantaneous flame speed in the PM is 6.519 mm/s and the average flame speed is 0.225 mm/s. The foamed PM in the meso-scale burners are shown to significantly improve the heat transfer efficiency. The burner in submerged combustion has a lower reaction zone temperature (806 °C vs. 1721 °C), lower exhaust gas temperature (419 °C vs. 1227 °C) and higher wall temperature than that with free flame. The heat transfer efficiency of the submerged flame is about twice that of the free flame.

Suggested Citation

  • Chen, Xinjian & Li, Junwei & Zhao, Dan & Rashid, Muhammad Tahir & Zhou, Xinyuan & Wang, Ningfei, 2021. "Effects of porous media on partially premixed combustion and heat transfer in meso-scale burners fuelled with ethanol," Energy, Elsevier, vol. 224(C).
    • Handle: RePEc:eee:energy:v:224:y:2021:i:c:s0360544221004400
    DOI: 10.1016/j.energy.2021.120191
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    Cited by:

    1. Peng, Qingguo & Shi, Zhiwei & Xie, Bo & Huang, Zhixin & Tang, Shihao & Li, Xianhua & Huang, Haisong & E, Jiaqiang, 2023. "Optimisation of a micro-thermophotovoltaic with porous media inserted burner for electrical power improvement," Renewable Energy, Elsevier, vol. 215(C).
    2. He, Ziqiang & Zhang, Lei & Li, Xiuquan & You, Jingxiang & Xue, Zongguo & Yan, Yunfei, 2023. "Heat transfer enhancement and pressure loss analysis of hydrogen-fueled microcombustor with slinky projection shape channel for micro-thermophotovoltaic system," Energy, Elsevier, vol. 283(C).
    3. Zhao, He & Zhao, Dan & Becker, Sid & Rong, Hui & Zhao, Xiaohuan, 2023. "Entropy generation and improved thermal performance investigation on a hydrogen-fuelled double-channel microcombustor with Y-shaped internal fins," Energy, Elsevier, vol. 283(C).
    4. Zhang, Zhiqing & Li, Jiangtao & Tian, Jie & Dong, Rui & Zou, Zhi & Gao, Sheng & Tan, Dongli, 2022. "Performance, combustion and emission characteristics investigations on a diesel engine fueled with diesel/ ethanol /n-butanol blends," Energy, Elsevier, vol. 249(C).
    5. Zeng, Zilong & Jing, Dengwei & Guo, Liejin, 2021. "Efficient hydrogen production in a spotlight reactor with plate photocatalyst of TiO2/NiO heterojunction supported on nickel foam," Energy, Elsevier, vol. 228(C).
    6. Xie, Bo & Peng, Qingguo & Yang, Wenming & Li, Shaobo & E, Jiaqiang & Li, Zhenwei & Tao, Meng & Zhang, Ansi, 2022. "Effect of pins and exit-step on thermal performance and energy efficiency of hydrogen-fueled combustion for micro-thermophotovoltaic," Energy, Elsevier, vol. 239(PD).
    7. Gurunadh Velidi & Chun Sang Yoo, 2023. "A Review on Flame Stabilization Technologies for UAV Engine Micro-Meso Scale Combustors: Progress and Challenges," Energies, MDPI, vol. 16(9), pages 1-44, May.
    8. Vinay Sankar & Sreejith Sudarsanan & Sudipto Mukhopadhyay & Prabhu Selvaraj & Aravind Balakrishnan & Ratna Kishore Velamati, 2023. "Towards the Development of Miniature Scale Liquid Fuel Combustors for Power Generation Application—A Review," Energies, MDPI, vol. 16(10), pages 1-41, May.
    9. Ling, Zhongqian & Lu, Ling & Zeng, Xianyang & Kuang, Min & Ling, Bo & Gao, Chuanji & Zhou, Chao, 2023. "Ethylene combustion performance with varying the N2 content in a porous burner," Energy, Elsevier, vol. 262(PA).

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