August 17, 2025

NOx Emission of Ammonia Combustion: Analyzing the Impact of Mixing With a Novel Monte Carlo Model

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NOx emissions from ammonia combustion can double if mixing conditions are not optimized, increasing environmental impact.
Testing showed that an equivalence ratio near 1.2 minimizes NOx emissions across the operational range of gas turbines.
A Monte Carlo method was incorporated into flow network analysis to assess the mixing impact in staged combustion systems.
Improved air management, including combustor air bypass, is necessary to achieve desired NOx emission levels when burning ammonia.

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Monte Carlo modeling uncovers mixing effects on NOx emissions in staged combustion systems, suggesting improved combustion strategies.

Krebs et al. (2025) studied this question.

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