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Pollutant emissions from flat-flame burners at high pressuresMaximum flame temperatures and pollutant emission measurements for NOx, CO, and UHC (unburned hydrocarbons) are reported for premixed methane air flat flames at constant total mass flow rate over the pressure range from 1.9 to 30 atm and for equivalence ratios from 0.84 to 1.12. For any given pressure, maxima typically occur in both the temperature and NOx emissions curves slightly to the lean side of stoichiometric conditions. The UHC emissions show minima at roughly the same equivalence ratios. The CO emissions, however, increase continually with increasing equivalence ratio. Flame temperature and NOx emissions decrease with increasing pressure, while the opposite is true for the CO and UHC emissions. The NOx data correlate reasonably well as a function of flame temperature only. Four flameholders, differing only slightly, were used. In general, the temperature and emissions data from these four flameholders are similar, but some differences also exist. These differences appear to be related to minor variations in the condition of the flameholder surfaces.
Document ID
19800016896
Acquisition Source
Legacy CDMS
Document Type
Technical Publication (TP)
Authors
Maahs, H. G. (NASA Langley Research Center Hampton, VA, United States)
Miller, I. M. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 4, 2013
Publication Date
June 1, 1980
Subject Category
Inorganic And Physical Chemistry
Report/Patent Number
L-13550
NASA-TP-1673
Accession Number
80N25392
Funding Number(s)
PROJECT: RTOP 146-20-10-07
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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