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Experimental investigation of the flame stability limits for H2 + C3H8, H2 + C2H6 and H2 + CH4 jet flames

Experimental investigation of the flame stability limits for H2 + C3H8, H2 + C2H6 and H2 + CH4... Experimental work was conducted to investigate the flame stability limits of H2 + C3H8, H2 + C2H6 and H2 + CH4 jet flames by using a single jet diffusion burner with a nozzle diameter of 2 mm. The results of 400 experimental tests showed that the increment of hydrogen composition increases the stability limits of the hydrogen-hydrocarbon jet flames. Furthermore, the results also showed that H2 + C3H8 jet flames could be effectively lifted or blown out at a lower jet exit velocity than H2 + C2H6 and H2 + CH4 jet flames at similar H2 concentrations. In addition, it was observed that the H2 + CH4 jet flame exhibits the highest blowout velocity. It was also found that the stability limit of hydrogen-hydrocarbon jet flames starts to increase rapidly at hydrogen volumetric composition of 90% for H2 + C3H8, 85% for H2 + C2H6 and 70% for H2 + CH4. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Brazilian Journal of Chemical Engineering Springer Journals

Experimental investigation of the flame stability limits for H2 + C3H8, H2 + C2H6 and H2 + CH4 jet flames

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Publisher
Springer Journals
Copyright
Copyright © Associação Brasileira de Engenharia Química 2021
ISSN
0104-6632
eISSN
1678-4383
DOI
10.1007/s43153-021-00169-4
Publisher site
See Article on Publisher Site

Abstract

Experimental work was conducted to investigate the flame stability limits of H2 + C3H8, H2 + C2H6 and H2 + CH4 jet flames by using a single jet diffusion burner with a nozzle diameter of 2 mm. The results of 400 experimental tests showed that the increment of hydrogen composition increases the stability limits of the hydrogen-hydrocarbon jet flames. Furthermore, the results also showed that H2 + C3H8 jet flames could be effectively lifted or blown out at a lower jet exit velocity than H2 + C2H6 and H2 + CH4 jet flames at similar H2 concentrations. In addition, it was observed that the H2 + CH4 jet flame exhibits the highest blowout velocity. It was also found that the stability limit of hydrogen-hydrocarbon jet flames starts to increase rapidly at hydrogen volumetric composition of 90% for H2 + C3H8, 85% for H2 + C2H6 and 70% for H2 + CH4.

Journal

Brazilian Journal of Chemical EngineeringSpringer Journals

Published: Oct 15, 2021

Keywords: Hydrogen fuel; Hydrogen-hydrocarbon jet flames; Stability limits; Turbulent diffusion flames

References