Numerical study of hydrogen enrichment effects in oxy-flame turbulent of three separated jets
| Autor: | M.A. Mergheni, Mohamed Mahdi Belhaj Brahim, Sassi Ben Nasrallah, Jean Charles. Sautet, Nidhal Ben Khedher |
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| Přispěvatelé: | Laboratoire d'Etudes des Systèmes Thermiques et Energétiques [Monastir] (LESTE / ENIM), École Nationale d’Ingénieurs de Monastir (ENIM), Complexe de recherche interprofessionnel en aérothermochimie (CORIA), Centre National de la Recherche Scientifique (CNRS)-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)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU) |
| Rok vydání: | 2017 |
| Předmět: |
Premixed flame
Jet (fluid) Materials science Laminar flame speed Hydrogen [SPI.FLUID]Engineering Sciences [physics]/Reactive fluid environment 020209 energy Diffusion flame Energy Engineering and Power Technology Thermodynamics chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Combustion 7. Clean energy Industrial and Manufacturing Engineering Adiabatic flame temperature chemistry 13. Climate action 0202 electrical engineering electronic engineering information engineering Combustor 0210 nano-technology ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Applied Thermal Engineering Applied Thermal Engineering, Elsevier, 2017, 113, pp.490-498. ⟨10.1016/j.applthermaleng.2016.10.194⟩ |
| ISSN: | 1359-4311 |
| Popis: | The development of oxy-fuel combustion in a burner with separated jets presents a promising technology ensuring higher thermal efficiency, better flame stability and more safety compared to premixed combustion. This paper presents a numerical investigation of burner of 25 kW power consisting of a central methane and hydrogen jet surrounded by two oxygen jets. This study aims to evaluate the effect of hydrogen on the dynamics, the distribution of temperature, the stability of the flame, the variation of species mass fraction (CO, CO 2 …) and the radiative heat flux. Results show that the addition of hydrogen has a considerable effect on the dynamic behaviour and flame temperature. Indeed, using hydrogen increases the temperature maximum, accelerates the fusion of three jets, and favours the mixing between them. Therefore, it ensures the flame stabilization. Moreover, the results show that the mass fraction of CH 4 , CO and CO 2 are highly reduced with the addition of hydrogen. Furthermore, adding hydrogen attenuates the radiative heat flux. |
| Databáze: | OpenAIRE |
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