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Dynamically balanced fuel nozzle and method of operation

United States Patent

6,058,709
May 9, 2000
View the Complete Patent at the US Patent & Trademark Office
U.S. Department of Energy - Visit the Office of the Assistant General Counsel for Technology Transfer & Intellectual Property Website
An apparatus and method of operation designed to reduce undesirably high pressure oscillations in lean premix combustion systems burning hydrocarbon fuels are provided. Natural combustion and nozzle acoustics are employed to generate multiple fuel pockets which, when burned in the combustor, counteract the oscillations caused by variations in heat release in the combustor. A hybrid of active and passive control techniques, the apparatus and method eliminate combustion oscillations over a wide operating range, without the use of moving parts or electronics.
Richards; George A. (Morgantown, WV), Janus; Michael C. (Baltimore, MD), Robey; Edward H. (Westover, WV)
The United States of America represented by the United States Department (Washington, DC)
08/ 991,630
November 6, 1997
ORIGIN OF THE INVENTION The United States Government has rights in this invention pursuant to the employer-employee relationship of the U.S. Department of Energy and the inventors.