An Experimental and Detailed Chemical Kinetic Investigation of the Addition of C2 Oxygenated Species in Rich Ethylene Premixed Flames

Malliotakis, Zisis; Leplat, Nicolas; Vourliotakis, George; Keramiotis, Christos; Skevis, G.; Founti, M.; Vandooren, Jacques

doi:10.1080/00102202.2018.1546696

Cited by 1 publication

(1 citation statement)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The methodology used to obtain the foam flame speed and, consequently, derive the required flow rates for stable operation is the following. Adiabatic laminar flame speeds for freely-propagating mixtures with the same composition as those used in the current campaign are calculated using the CHEMKIN suite of the ANSYS software [16] and the detailed kinetic mechanism proposed by Malliotakis et al [17]. The correlation in [6] is then used in order to obtain the corresponding burning velocities inside the foam burner.…”

Section: N2mentioning

confidence: 99%

Experimental Characterization of a Novel Foam Burner Design for the Low-Excess-Enthalpy Combustion of Very Lean Syngas Mixtures

Fotiadis,

Asimakopoulou,

Baltzopoulou

et al. 2023

Energies

Self Cite

View full text Add to dashboard Cite

In the present work, a novel foam burner design is proposed and experimentally evaluated for operation with highly diluted syngas mixtures. The lab-scale burner consists of a purpose-built, square-shaped, high-temperature-grade stainless steel tubular reactor filled with square-sectioned siliconized silico carbide (SiSiC) foams. The assembly was installed in an electrical furnace. Spatially resolved temperature measurements were obtained along the reactor axis, while simultaneous measurements of CO, CO2, H2, O2, and N2 were taken at the burner exit and the water levels were recorded upstream and downstream of the reactor. The results clearly show that flames can be stabilized along the reactor for a range of foam characteristics and operating conditions. Hydrogen conversion efficiencies in excess of 98%, and overall thermal efficiencies close to 95% were achieved for the selected operating conditions. Overall, the denser 10 ppi foam demonstrated superior combustion characteristics in terms of stability, lower enthalpy rises, and a wider operating range at the expense of a very modest pressure drop penalty. Finally, scanning electron microscopy, coupled with energy dispersion spectroscopy (SEM/EDS) and Raman spectroscopy analyses, was used to determine the morphological and compositional characteristics of the pristine and aged foams. After more than 100 h of operation, no significant performance degradation was observed, even though the burner design was subjected to considerable thermal stress.

show abstract

Section: N2mentioning

confidence: 99%