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Evidence for a New No Production Mechanism in Flames by Joel E. Harrington; Gregory P. Smith; Pamela A. Berg; Alison R. Noble; Jay B. Jeffries; David R. Crosley is a Engineering article available to read on EtoBox.

What is Evidence for a New No Production Mechanism in Flames about?

Bozzelli and Dean [1] recently proposed a new mechanism for NO production via the reaction O ‫ם‬ NNH ⇔ NH ‫ם‬ NO that predicts formation of significant amounts of NO in flames burning in air. To test the predictions of this new NNH mechanism, we designed low-pressure flame experiments to minimize the amount of NO made through other, more established mechanisms and to yield measurable amounts of NO through NNH chemistry. We used laser-induced fluorescence (LIF) to measure NO in 38 and 78 torr, U ‫ס‬ 1.5, hydrogen/air flames. NO is observed in both flames at ϳ0.3 ppm, consistent with model predictions using the Bozzelli and Dean mechanism. We also measured OH and temperature profiles and tested thoroughly for potential contamination sources. Though agreement of experiment and model is imperfect, the NNH mechanism provides a viable explanation for the presence of ppm levels of NO in these flames. The NNH mechanism should therefore be included in NO x combustion models and may be a significant route to NO in many flames.

Who reads Evidence for a New No Production Mechanism in Flames?

Author

Joel E. Harrington; Gregory P. Smith; Pamela A. Berg; Alison R. Noble; Jay B. Jeffries; David R. Crosley

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd; Elsevier BV (ISSN 1540-7489)

Published

1996

Language

EN

Field

Engineering (Physical Sciences)