Investigation of Combustion Structure Inside Low NOx Combustors for a 1500°C-Class Gas Turbine FREE

[+] Author Affiliations
H. Matsuzaki

Tohoku Electric Power Co., Inc., Sendai, Japan

I. Fukue, S. Mandai, S. Tanimura, M. Inada

Mitsubishi Heavy Industries, Ltd., Takasago, Japan

Paper No. 92-GT-123, pp. V003T06A020; 6 pages
  • ASME 1992 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 3: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations
  • Cologne, Germany, June 1–4, 1992
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7895-8
  • Copyright © 1992 by ASME


This paper describes the cold flow tests and low pressure combustion tests which were conducted for the development of a 1500°C-class low NOx combustion system. In the cold flow tests, the effect of vane angle and the momentum ratio of fuel to air flow on mixing characteristics inside the premixing nozzles was investigated. The stabilization of the flow field inside the combustor was confirmed by measurement of the axial velocity distribution and observations by using a tuft of soft thread.

Combustion characteristics in terms of emissions and stability were investigated initially by low pressure combustion tests, and the gas temperature distribution inside the combustor was measured. NOx emissions for a 1500°C-class gas turbine as low as 50ppm at 15% oxygen at design pressure were demonstrated.

Copyright © 1992 by ASME
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