Fuel and Combustion

Fuel and Combustion

Experimental study of laminar burning velocity for dual fuel (Gasoline-NG)-Air mixture using pressure record in a spherical combustion bomb at higher primary pressure

Document Type : Original Article

Authors
Ebrahim Abdi Aghdam 1
Mehrdad Sarabi 2
Mojtaba Mehrbod Khomeyrani 3
1 Faculty of Engineering, University of Mohaghegh Ardabili, Iran
2 PhD student in University of Mohaghegh Ardabili
3 Engineer in Gas Company
Abstract
Turbulent burning velocity of air-fuel mixture depends on laminar burning velocity and turbulent aspects. The main factors influencing laminar burning velocity are fuel type and pressure, temperature and equivalence ratio of the mixture. In the current work, a constant volume spherical bomb and its related equipments were used to capture experimental pressure-time data during combustion period. The data was defined as input to a multi zone thermodynamic code to calculate laminar burning velocity. The velocity was evaluated for gasoline-air and Natural Gas (NG)-air mixtures at stoichiometric equivalence ratio and NG-gasoline-air mixtures with NG mass percentage of 25%, 50% 75% and 100% at stoichiometric condition with initial pressure and temperature of 500kPa and 333K, respectively. The obtained results of gasoline-air mixtures in comparison to NG-air laminar burning velocity showed that the NG-air laminar burning velocity in the range of 5 to 20bar was higher than gasoline. For dual fuel NG-gasoline it was observed that at the stoichiometric condition when bomb pressure was lower than 20bar, the laminar burning velocities of 25% and 50%NG in dual case were lower than those of 100%NG.
Keywords
Laminar burning velocity
Combustion bomb
Natural gas
Gasoline
Dual fuel mixture

Subjects

  1. E. James, “Laminar burning velocities of iso-octane-air mixtures-a literature review,” SAE Technical Paper 870170, 1987.
  2. E. Hu and et al., “Measurements of laminar burning velocities and onset of cellular instabilities of methane–hydrogen–air flames at elevated pressures and temperatures,” International Journal of Hydrogen Energy, 34, No. 13, 2009, pp. 5574-5584.
  3. S. Liao and et al., “Determination of the laminar burning velocities for mixtures of ethanol and air at elevated temperatures,” Applied Thermal Engineering, 27, No. 2, 2007, pp. 374-380.
  4. D. Razus, D. Oancea and C. Movileanu, “Burning velocity evaluation from pressure evolution during the early stage of closed-vessel explosions,” Journal of Loss Prevention in The Process Industries, 19, No. 4, 2006, pp. 334-342.
  5. K. Saeed and C. Stone, “Measurements of the laminar burning velocity for mixtures of methanol and air from a constant-volume vessel using a multizone model,” Combustion and Flame, 139, No. 1, 2004, pp. 152-166.
  6. T. Tahtouh, F. Halter and C. Mounaïm-Rousselle, “Laminar premixed flame characteristics of hydrogen blended iso-octane–air–nitrogen mixtures,” International Journal of Hydrogen Energy, 36, No. 1, 2011, pp. 985-991.
  7. N. Peters, Turbulent combustion, Cambridge university press, Cambridge, United Kingdom, 2004.
  8. X. J. Gu and et al, “Laminar burning velocity and Markstein lengths of methane–air mixtures,” Combustion and Flame, 121, No. 1, pp. 41-58, 2000..
  9. M. Metghalchi and J.C. Keck, “Burning velocities of mixtures of air with methanol, isooctane, and indolene at high pressure and temperature,” Combustion and Flame, 48, 1982, pp. 191-210.
  10. S. Mitra, P. Kumar, “Combustion of Methane-Air in a vessel of Constant Volume,” Proceedings of The XVI  National conference on I.C Engines and Combustion, New delhi, India, 2000, pp. 480-491.
  11. C. Mandilas and et al., “Effects of hydrogen addition on laminar and turbulent premixed methane and iso-octane–air flames,” Proceedings of the Combustion Institute, 31, No. 1, 2007, pp. 1443-1450.
  12. D. Bradley and et al., “Laminar burning velocities of lean hydrogen-air mixtures at pressures up to 1.0 MPa,” Combustion and Flame, 149, No. 1, 2007, pp. 162-172.
  13. S. Jerzembeck and et al., “Laminar burning velocities at high pressure for primary reference fuels and gasoline: Experimental and numerical investigation,” Combustion and Flame, 156, No. 2, 2009, pp. 292-301.
  14. H. Miao and et al., “Laminar burning velocity and Markstein length of nitrogen diluted natural gas/hydrogen/air mixtures at normal, reduced and elevated pressures,” International Journal of Hydrogen Energy, 34, No. 7, 2009, pp. 3145-3155.
  15. E. Abdi Aghdam, S. M. H. A., “Experimental Study of NG-Air Mixtures at Initially Laminar Conditions,” Journal of Mechanical Eng., Autumn and Winter, 41, No. 2 , 2011, pp. 23-30.
  16. E. A. Aghdam, “Wall effect on determination of laminar burning velocity in a constant volume bomb using a quasi-dimensional model,” Applied Mathematical Modelling, 38, No. 24, 2014, pp. 5811-5821.
  17. M. Baloo and et al., “Effect of iso-octane/methane blend on laminar burning velocity and flame instability,” Fuel, 144, 2015, pp. 264-273.
  18. S. Petrakides and et al., “Experimental study on stoichiometric laminar flame velocities and Markstein lengths of methane and PRF95 dual fuels,” Fuel, 182, 2016, pp. 721-731.
  19. M. Baloo and et al., “Effects of pressure and temperature on laminar burning velocity and flame instability of iso-octane/methane fuel blend,” Fuel, 170, 2016, pp. 235-244.
  20. G. Broustail and et al., “Experimental determination of laminar burning velocity for butanol/iso-octane and ethanol/iso-octane blends for different initial pressures,” Fuel, 106, 2013, pp. 310-317.
  21. E. Varea and et al., Pressure effects on laminar burning velocities and Markstein lengths for isooctane-ethanol-air mixtures,” Proceedings of the Combustion Institute, 34, No. 1, 2013, pp. 735-744.
  22. J. Heywood, Internal combustion engine fundamentals, McGraw-Hill Education, Printed in Singapore, 1988.
  23. A. Prothero, Computing with thermochemical data, Combustion and Flame, 13, No. 4, 1969, pp. 399-408.
  24. R. E. Sonntag and et al., Fundamentals of Thermodynamics, Wiley, New York, 2003.
  25. S. Liao and et al., “Measurements of Markstein numbers and laminar burning velocities for liquefied petroleum gas-air mixtures,” Fuel, 83, No. 10, 2004, pp. 1281-1288.
  26. N. Hinton, R. Stone and R. Cracknell, “Laminar burning velocity measurements in constant volume vessels-reconciliation of flame front imaging and pressure rise methods,” Fuel, 211, 2018, pp. 446-457.
  27. N. Hinton and et al., “Aqueous ethanol laminar burning velocity measurements using constant volume bomb methods,” Fuel, 214, 2018, pp. 127-134.