Effects of Incomplete Premixing on NOx Formation at Temperature and Pressure Conditions of LP Combustion Turbines

Author:

Rutar Teodora1,Martin Scott M.1,Nicol David G.1,Malte Philip C.1,Pratt David T.1

Affiliation:

1. University of Washington, Seattle, WA

Abstract

A probability density function/chemical reactor model (PDF/CRM) is applied to study how NOx emissions vary with mean combustion temperature, inlet air temperature, and pressure for different degrees of premixing quality under lean-premixed (LP) gas turbine combustor conditions. Inlet air temperatures of 550, 650 and 750 K, and combustor pressures of 10, 14 and 30 atm are examined in different chemical reactor configurations. Primary results from this study are: incomplete premixing can either increase or decrease NOx emissions, depending on the primary zone stoichiometry; an Arrhenius-type plot of NOx emissions may have promise for assessing the premixer quality of lean-premixed combustors; and decreasing premixing quality enhances the influence of inlet air temperature and pressure on NOx emissions.

Publisher

American Society of Mechanical Engineers

Cited by 6 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Integrated Experimental and Numerical Approach for Fuel-Air Mixing Prediction in a Heavy-Duty Gas Turbine LP Burner;Journal of Engineering for Gas Turbines and Power;2000-10-01

2. Fuel preparation and emission characteristics of a pressure loaded LPP combustor;30th Fluid Dynamics Conference;1999-06-28

3. Quantifying Fuel/Air Unmixedness in Premixing Nozzles Using an Acetone Fluorescence Technique;Journal of Engineering for Gas Turbines and Power;1999-03-01

4. Low-emissions gas turbine combustor development using sector and full annular rigs;34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit;1998-07-13

5. Fuel injector characterization using laser diagnostics at atmospheric and elevated pressures;36th AIAA Aerospace Sciences Meeting and Exhibit;1998-01-12

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