Abstract
The biogas and methane with hydrogen enrichment are used as the fuel. The peak-to-peak correlation and the peak-to-integrated correlation of considered markers and HRR in premixed flames were established to examine their sensitivity to the equivalence ratio and the fuel composition. For both premixed biogas and methane flames considered, the O × CH3product has the almost constant correlation with peak or total HRR at different conditions. Thus the O × CH3 product is suggested as the most reliable indicator for the HRR imaging in the unstretched premixed flames with the unknown equivalence ratio. HCO is demonstrated to be a reliable marker in the premixed combustion, while the OH × CH2O, H × CH2O and H × HO2products are inadequate for the single-valued prediction on the HRR because their correlations with HRR are sensitive to the equivalence ratio, indicating that these markers cannot reflect the HRR change accurately if the local equivalence ratio is affected.
Original language | English |
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Pages (from-to) | 35-45 |
Number of pages | 11 |
Journal | Energy |
Volume | 133 |
DOIs | |
Publication status | Published - 1 Jan 2017 |
Keywords
- Flame markers
- Heat release rate imaging
- Premixed combustion
- Single-valued prediction
ASJC Scopus subject areas
- Civil and Structural Engineering
- Building and Construction
- Pollution
- General Energy
- Mechanical Engineering
- Industrial and Manufacturing Engineering
- Electrical and Electronic Engineering