کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1279177 | 1645388 | 2011 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Hydrogen/carbon monoxide syngas burning rates measurements in high-pressure quiescent and turbulent environment Hydrogen/carbon monoxide syngas burning rates measurements in high-pressure quiescent and turbulent environment](/preview/png/1279177.png)
A high-pressure, double-chamber, fan-stirred, large-scale explosion facility is proposed for measurements of laminar and turbulent burning velocities, SL and ST, of centrally-ignited hydrogen and carbon monoxide syngas/air mixtures over an initial pressure range of p = 0.1–1.0 MPa. Results show that lean syngas laminar flames at elevated pressure are highly unstable resulting in cellular structures all over the expanding flame front surface, where SL∼p−0.15 having a relatively modest decrease with pressure as compared to lean methane flames where SL∼p−0.50. Contrarily, as to lean syngas turbulent flames, values of ST increase with increasing pressure (ST∼p0.15) at a fixed r.m.s. turbulent fluctuating velocity (u′ ≈ 1.4 m/s). Moreover, it is also shown that increasing u′/SL is still a way much more effective in increasing values of ST/SL than increasing pressure. Finally, discussions are offered and area for further studies identified.
► A high-pressure large explosion facility for syngas combustion is proposed.
► Measurements of high-pressure burning velocities for expanding lean syngas flames.
► More gentle pressure effect on burning rates for syngas than methane.
► Higher efficacy of turbulent intensity in increasing turbulent burning velocities.
Journal: International Journal of Hydrogen Energy - Volume 36, Issue 14, July 2011, Pages 8595–8603