Abstract
A laminar diffusion flame was measured by X-ray Compton scattering. The temperature distribution was measured from an analysis of Compton scattered X-ray intensity. The chemical state distribution was obtained from a Compton scattered X-ray spectrum analysis (s-parameter analysis). The analysis of intensity and s-parameter of Compton scattered X-ray spectra indicate that the propane molecule emitted from the cylindrical Bunsen burner collapse immediately coincides with soot generation. Furthermore, the temperature increases up to 1500 K and a large amount of CO2 was generated at the combustion field. Our results show that the Compton scattered X-ray analysis can be a novel nondestructive measurement for temperature and chemical states in a combustion reaction.
Highlights
Conventional fossil fuels still occupy more than 90% of global energy consumption there are many alternative methods to replace fossil fuels by renewable energy such as solar power
The main drawback of the usage of fossil fuels is that the combustion process emits pollutants such as soot [1]
Since combustion occurs due to complex interactions and heat, mass, and momentum transfer, measurements of distributions for temperature and chemical states are a key consequence for the elucidation of combustion phenomena
Summary
Conventional fossil fuels still occupy more than 90% of global energy consumption there are many alternative methods to replace fossil fuels by renewable energy such as solar power. The main drawback of the usage of fossil fuels is that the combustion process emits pollutants such as soot [1]. Since combustion occurs due to complex interactions and heat, mass, and momentum transfer, measurements of distributions for temperature and chemical states are a key consequence for the elucidation of combustion phenomena. Nonintrusive measurements offer important advantages to study combusting process since they do not insert a disturbance that can influence flow characteristics and affect the temperature distribution [2]. The Compton scattered X-ray measurement can be a nondestructive measurement for temperature and chemical states in a combustion reaction, which elucidates combustion phenomena for the reduction pollutant emissions in fossil fuels combustion. In this study we report a measurement of a laminar diffusion flame probed by Compton scattered X-rays. The distributions of temperature and chemical states are discussed from a viewpoint of combustion reactions in the flame
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