Research Papers: Energy Conversion/Systems

Dual Injection Distributed Combustion for Gas Turbine Application

[+] Author and Article Information
Ahmed E. E. Khalil

Research Assistant
Department of Mechanical Engineering,
University of Maryland,
College Park, MD 20742
e-mail: aekhalil@umd.edu

Ashwani K. Gupta

Distinguished University Professor
Department of Mechanical Engineering,
University of Maryland,
College Park, MD 20742
e-mail: akgupta@umd.edu

1Corresponding author.

Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received May 14, 2013; final manuscript received July 11, 2013; published online August 19, 2013. Editor: Hameed Metghalchi.

J. Energy Resour. Technol 136(1), 011601 (Aug 19, 2013) (5 pages) Paper No: JERT-13-1151; doi: 10.1115/1.4025020 History: Received May 14, 2013; Revised July 11, 2013

Distributed combustion has been shown to provide significantly improved performance with near zero emissions for stationary gas turbine applications. Characteristics of distributed combustion include uniform thermal field in the entire combustion chamber (improved pattern factor), ultra-low emissions of NOx and CO, low noise, enhanced stability, and higher efficiency. Distributed combustion with swirl have been investigated to determine the beneficial aspects of such flows on clean and efficient combustion under simulated gas turbine combustion conditions with ultra-low NOx emissions. Results are presented here on the impact of employing dual injection of air and fuel in contrast to single injection. Dual and multi-injection is of great importance for combustor design scale up as to maintain flow similarities. Results showed that careful implementation of dual injection can result in emissions as low as single air/fuel injection method. With adequate fuel injection strategy, further reduction in emissions has been demonstrated. Results obtained on pollutants emission with dual injection and different fuel injection strategies at various equivalence ratios showed ultra-low emission (<5 PPM NO and <15 PPM CO) and high performance. OH* chemiluminescence revealed relative position of the flame within the combustor under various conditions for further improvements in distributed combustion conditions and to further reduce NOx emission.

Copyright © 2014 by ASME
Your Session has timed out. Please sign back in to continue.



Grahic Jump Location
Fig. 1

Schematic diagram of the combustor with extended axial exit “at” (left: top section at midlocation and right: combustor interior)

Grahic Jump Location
Fig. 2

High intensity CDC cylindrical combustor test rig with optical access (left) and axial product gas exit (right)

Grahic Jump Location
Fig. 3

Colorless combustion with dual air/fuel injection

Grahic Jump Location
Fig. 4

NO and CO emissions for single injection case

Grahic Jump Location
Fig. 5

NO emissions for single and dual injection cases

Grahic Jump Location
Fig. 6

OH* chemiluminescence intensity for dual injection case

Grahic Jump Location
Fig. 7

OH* chemiluminescence intensity for single injection case

Grahic Jump Location
Fig. 8

NO emissions for fuel distribution variation dual injection cases

Grahic Jump Location
Fig. 9

OH* chemiluminescence intensity for dual injection fuel distribution variation cases




Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In