Abstract

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.

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