NASA NTRS · 19730048546
Sampling nitric oxide from combustion gases.
Abstract
Experimental study of several sampling tube and probe material compositions and designs aimed at preventing nitric oxide reduction when sampling nitric oxide from combustion gases. A 250,000 Btu/h furnace fired with technical grade methane was used for testing the sampling probes over a wide range of air-fuel mixtures. The results obtained include the finding that the use of stainless steel in probes creates inaccuracies in near-stoichiometric and fuel-rich sampling in hydrocarbon flames. For very fuel-rich flames, water cooling is needed even in quartz probes to prevent significant reduction of nitric oxide.-
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England, C., Houseman, J., Teixeira, D. P.. 1973-06-01. Sampling nitric oxide from combustion gases.. https://ntrs.nasa.gov/citations/19730048546
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