Hyper-spectral analysis of diffusion flames supplied by waste cooking oil of different blends sprayed by Siphon nozzles

  • Ahmed Mahfouz
  • Ahmed Emara
  • H. S. Ayoub
  • Ashraf. F. El-Sherif
  • Ahmed El Fatih
  • H. A. Moneib
  • Y. H. ElbasharEmail author
Technical Paper


The complicated investigation of reaction zones for diffusion flames created a chance to study emissions spectra analysis using new trends of optical measurements like hyper-spectral camera. In this study, fundamental and applied combustion science was introduced where emissions spectra contours of waste cooking oil (WCO) blends with light diesel oil (LDO) flame at constant equivalence ratio were plotted. By applying Wien’s law, thermal contours and core inflame temperatures were inspected. The measurements described the exact position of the reaction zones. Measurements of hyper-spectral emission peaks of the tested fuel at constant equivalence ratio showed wavelengths shift between each zone along the flame. The wavelengths at emission peaks were inversely proportional with temperature profiles inside the flame. The reaction zone length was 7 cm in LDO flame, 2.5 cm in 20%WCO +80% LDO and 2 cm in 20% WCO + 80% HDO (heavy oil). The bigger size of the reaction zone was the higher emissions inside the flame recognize.


Waste cooking oil Hyper-spectral Siphon nozzles Coaxial swirled burner Hyper-spectral emission peaks Thermal contour map Emission contour spectra 



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Copyright information

© The Brazilian Society of Mechanical Sciences and Engineering 2019

Authors and Affiliations

  • Ahmed Mahfouz
    • 1
  • Ahmed Emara
    • 2
  • H. S. Ayoub
    • 3
  • Ashraf. F. El-Sherif
    • 4
  • Ahmed El Fatih
    • 1
  • H. A. Moneib
    • 2
  • Y. H. Elbashar
    • 5
    Email author
  1. 1.Mechanical Power Engineering DepartmentNational Research CentreDokkiEgypt
  2. 2.Mechanical Power Engineering Department, Faculty of Engineering MattariaHelwan UniversityHelwanEgypt
  3. 3.Physics Department, Faculty of ScienceCairo UniversityGizaEgypt
  4. 4.Engineering Physics Department, Laser Photonics Research CenterMilitary Technical CollegeCairoEgypt
  5. 5.Egypt Nanotechnology Center (EGNC)Cairo UniversityGizaEgypt

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