Combustion of hythane diluted with CO2
| Autor: | Sébastien Yon, A. Mhimid, Ibtissem Hraiech, J.C. Sautet |
|---|---|
| Přispěvatelé: | Complexe de recherche interprofessionnel en aérothermochimie (CORIA), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Etudes des Systèmes Thermiques et Energétiques [Monastir] (LESTE / ENIM), École Nationale d’Ingénieurs de Monastir (ENIM), Faculté des Sciences de Monastir (FSM), Université de Monastir - University of Monastir (UM) |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Premixed flame
Materials science Hydrogen Renewable Energy Sustainability and the Environment business.industry flame stability Diffusion hydrogen enrichment of natural gas flames CO2 dilution lcsh:Mechanical engineering and machinery Diffusion flame Analytical chemistry chemistry.chemical_element Combustion Mole fraction 7. Clean energy hythane Dilution [SPI]Engineering Sciences [physics] chemistry 13. Climate action Natural gas lcsh:TJ1-1570 business |
| Zdroj: | Thermal Science, Vol 19, Iss 1, Pp 1-10 (2015) Thermal Science Thermal Science, VINČA Institute of Nuclear Sciences, 2015, 19 (1), pp.1--10. ⟨10.2298/TSCI120119100H⟩ |
| ISSN: | 0354-9836 |
| DOI: | 10.2298/TSCI120119100H⟩ |
| Popis: | With increasing concern about energy shortage and environmental protection, improving engine fuel economy and reducing exhaust emissions have become major research topics in combustion and engine development. Hythane (a blend of hydrogen H2 and natural gas NG) has generated a significant interest as an alternative fuel for the future. This paper describes an experimental study of the effects of CO2 addition on the stability of a turbulent jet diffusion NG-H2 flame. The mole fraction of hydrogen (% H2) in NG-H2 mixture was varied from 0% to 50%. The equivalence ratio of the hythane/CO2/air mixture was kept at stoichiometry. The results show that the lift-off height increases with the addition of CO2 at various % H2 content in hythane. However, we observe that with 20% H2, we can obtain a stable flame diluted with 40% CO2, while for 0% H2, the flame is blown out above 20% CO2. This means that the limits of flame blowing out are pushed with the additions of H2. Moreover, the results show that for %H2 content in NG-H2 fuel up to 10%, the addition of CO2 could produce lifted flame if the % CO2 is low. At higher % CO2 dilution, flame would remain attached until blow-out. This is mainly due to the fact that the dilution leads to ejection velocities very high but reactivity of the mixture does not change so the flame tends to stretch. |
| Databáze: | OpenAIRE |
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