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RESEARCH PAPERS: Gas Turbines: Combustion and Fuels

Characterization of NOx, N20, and CO for Lean-Premixed Combustion in a High-Pressure Jet-Stirred Reactor

[+] Author and Article Information
R. C. Steele, J. H. Tonouchi, D. G. Nicol, D. C. Horning, P. C. Malte, D. T. Pratt

Combustion Laboratories, Department of Mechanical Engineering, Box 352600, University of Washington, Seattle, WA 98195-2600

J. Eng. Gas Turbines Power 120(2), 303-310 (Apr 01, 1998) (8 pages) doi:10.1115/1.2818121 History: Received February 01, 1996; Online November 19, 2007

Abstract

A high-pressure jet-stirred reactor (HP-JSR) has been built and applied to the study of NOx and N2 o formation and CO oxidation in lean-Premixed (LPM) combustion. The measurements obtained with the HP-JSR Provide information on how NOx forms in lean-premixed, high-intensity combustion, and provide comparison to NOx data published recently for practical LPM combustors. The HP-JSR results indicate that the NOx yield is significantly influenced by the rate of relaxation of super-equilibrium concentrations of the O-atom. Also indicated by the HP-JSR results are characteristic NOx formation rates. Two computational models are used to simulate the HP-JSR and to provide comparison to the measurements. The first is a chemical reactor model (CRM) consisting of two perfectly stirred reactors (PSRs) placed in series. The second is a stirred reactor model with finite rate macromixing (i.e., recirculation) and micromixing. The micromixing is treated by either coalescence-dispersion (CD) or interaction by exchange with the mean (IEM) theory. Additionally, a model based on one-dimensional gas dynamics with chemical reaction is used to assess chemical conversions within the gas sample probe.

Copyright © 1998 by The American Society of Mechanical Engineers
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