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Effects analysis on combustion and thermal performance enhancement of a nozzle-inlet micro tube fueled by the premixed hydrogen/air

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  • Peng, Qingguo
  • E, Jiaqiang
  • Yang, W.M.
  • Xu, Hongpeng
  • Chen, Jingwei
  • Meng, Tian
  • Qiu, Runzhi

Abstract

An investigation of premixed H2/air combustion in a nozzle inlet micro tube has been carried out. The effects of inlet shape on combustion characteristics, flow field, specie distribution and thermal performance are presented and discussed. Also, effects of inlet mass flow rate and equivalence ratio on the entropy generations of combustion in the micro tubes are analyzed. The results show that the mean outer wall temperature and the emitter theoretical radiant efficiency of the nozzle inlet micro tube is higher than that of the straight micro tube. The total entropy generation rate of the nozzle inlet micro tube is lower than the straight micro tube. Moreover, the Inlet 2 and Inlet 3 nozzle inlet micro tube obtain a higher mean outer wall temperature and a lower exergy destruction, which are more appropriate for the application of the micro thermophotovoltaic (TPV) system.

Suggested Citation

  • Peng, Qingguo & E, Jiaqiang & Yang, W.M. & Xu, Hongpeng & Chen, Jingwei & Meng, Tian & Qiu, Runzhi, 2018. "Effects analysis on combustion and thermal performance enhancement of a nozzle-inlet micro tube fueled by the premixed hydrogen/air," Energy, Elsevier, vol. 160(C), pages 349-360.
    • Handle: RePEc:eee:energy:v:160:y:2018:i:c:p:349-360
    DOI: 10.1016/j.energy.2018.07.034
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    References listed on IDEAS

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    Cited by:

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    3. Xiang, Ying & Yuan, Zili & Wang, Shixuan & Fan, Aiwu, 2019. "Effects of flow rate and fuel/air ratio on propagation behaviors of diffusion H2/air flames in a micro-combustor," Energy, Elsevier, vol. 179(C), pages 315-322.
    4. Peng, Qingguo & Jiaqiang, E & Yang, W.M. & Xu, Hongpeng & Chen, Jingwei & Zhang, Feng & Meng, Tian & Qiu, Runzhi, 2019. "Experimental and numerical investigation of a micro-thermophotovoltaic system with different backward-facing steps and wall thicknesses," Energy, Elsevier, vol. 173(C), pages 540-547.
    5. Gentillon, Philippe & Singh, Siddharth & Lakshman, Suhas & Zhang, Zhaolun & Paduthol, Appu & Ekins-Daukes, N.J. & Chan, Qing N. & Taylor, Robert A., 2019. "A comprehensive experimental characterisation of a novel porous media combustion-based thermophotovoltaic system with controlled emission," Applied Energy, Elsevier, vol. 254(C).
    6. Peng, Qingguo & Wu, Yifeng & E, Jiaqiang & Yang, Wenming & Xu, Hongpeng & Li, Zhenwei, 2019. "Combustion characteristics and thermal performance of premixed hydrogen-air in a two-rearward-step micro tube," Applied Energy, Elsevier, vol. 242(C), pages 424-438.
    7. Sun, Bowen & Kang, Xin & Wang, Yu, 2020. "Numerical investigations on the methane-oxygen diffusion flame-street phenomena in a microchannel: Effects of wall temperatures, inflow rates and global equivalence ratios on flame behaviors and combu," Energy, Elsevier, vol. 207(C).
    8. Cai, Tao & Tang, Aikun & Zhao, Dan & Zhou, Chen & Huang, Qiuhan, 2020. "Flame dynamics and stability of premixed methane/air in micro-planar quartz combustors," Energy, Elsevier, vol. 193(C).
    9. Peng, Qingguo & Yang, Wenming & E, Jiaqiang & Li, Shaobo & Li, Zhenwei & Xu, Hongpeng & Fu, Guang, 2021. "Effects of propane addition and burner scale on the combustion characteristics and working performance," Applied Energy, Elsevier, vol. 285(C).
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