Chemiluminescence usage in finding optimum operating range of multi-hole burners

Hossein Soltanian, Mohammad Zabetian Targhi and Hadi Pasdarshahri

Energy, 2019, vol. 180, issue C, 398-404

Abstract: In the present study, chemiluminescence analysis is used to determine the optimum range for equivalence ratio (Φ) in a multi-hole cylindrical burner. The premixed burner which uses natural gas is widely applied in gas condensing boilers and is examined here by Flame Emission Spectroscopy (FES). A spectrometry setup was implemented to capture emission of the burner, in order to detect OH*, CH*, C2*, and CO2* species by their chemiluminescence. The emission of OH* and CO2* was investigated for different equivalence ratios and burner power showing a peak in the lean ranges of Φ = 0.77–0.85 and 0.78–0.85 respectively, that corresponds to the maximum heat release rate. In addition, the OH*/CH* intensity ratio was investigated for range of Φ = 0.6–1.2 for all burner power, resulting in a power independent relation for OH*/CH*. It can be used as a tool to derive equivalence ratio from the OH*/CH* ratio. Moreover, the maximum surface temperature of the burner in power range occurred at Φ = 0.82 in a promising agreement with chemiluminescence peaks of OH* and CO2*. The main contribution is to find the optimum range of equivalence ratio corresponding to the maximum heat release rate.

Keywords: Flame emission spectroscopy (FES); Cylindrical burner; Chemiluminescence; Combustion species; Equivalence ratio (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:180:y:2019:i:c:p:398-404

DOI: 10.1016/j.energy.2019.05.104

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