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Explosion Behaviour of 30% Hydrogen/70% Methane-Blended Fuels in a Weak Turbulent Environment

Author

Listed:
  • Fu-Sheng Li

    (School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China)

  • Guo-Xiu Li

    (School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China)

  • Zuo-Yu Sun

    (School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China)

Abstract

In the present investigation the explosion characteristics of 30% H 2 /70% CH 4 -blended fuels have been experimentally studied in different turbulent environments. Some important indicators about the explosion characteristics, including maximum explosion pressure ( p max ), explosion duration ( t c ), maximum rate of pressure rise ((d p /d t ) max ), deflagration index ( K G ), and fast burn period ( t b ) have been studied. Furthermore, the influences of turbulent intensity associated with the equivalence ratio on explosion characteristics have been compressively analysed. The results indicated that, with the increase of turbulent intensity ( u’ rms ), the value of p max will be correspondingly raised while the equivalent ratio ( φ ) corresponding to the peak value of p max gradually changes from stoichiometric to 1.2. Based upon the value of p max in laminar condition, the growth extent of p max monotonically rises to u’ rms , but under a same u’ rms the growth extent of p max first declines and then rises with the increase of φ in the rage of 0.6 to 1.2. Under a laminar environment, the peak value of (d p /d t ) max is attained at φ = 1.0; although such a conclusion is maintained in the studied range of turbulent intensity, the difference on the value of (d p /d t ) max between φ = 1.0 and φ = 1.2 is obviously reduced with the increase of u’ rms . Meanwhile, from the variation of K G , it could be found that turbulence can raise the hazardous potential of disaster. With the increase of u’ rms , both the values of t c and t b reduce, the quota of t b in the explosion performs a similar regulation, but the detailed variation extent is also controlled by u’ rms .

Suggested Citation

  • Fu-Sheng Li & Guo-Xiu Li & Zuo-Yu Sun, 2017. "Explosion Behaviour of 30% Hydrogen/70% Methane-Blended Fuels in a Weak Turbulent Environment," Energies, MDPI, vol. 10(7), pages 1-15, July.
  • Handle: RePEc:gam:jeners:v:10:y:2017:i:7:p:915-:d:103435
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    References listed on IDEAS

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    1. Tang, Chenglong & Zhang, Yingjia & Huang, Zuohua, 2014. "Progress in combustion investigations of hydrogen enriched hydrocarbons," Renewable and Sustainable Energy Reviews, Elsevier, vol. 30(C), pages 195-216.
    2. Sun, Zuo-Yu & Li, Guo-Xiu, 2015. "On reliability and flexibility of sustainable energy application route for vehicles in China," Renewable and Sustainable Energy Reviews, Elsevier, vol. 51(C), pages 830-846.
    3. Sun, Zuo-Yu & Li, Guo-Xiu, 2016. "Propagation characteristics of laminar spherical flames within homogeneous hydrogen-air mixtures," Energy, Elsevier, vol. 116(P1), pages 116-127.
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