Dynamically balanced fuel nozzle and method of operation

Patent · Sat Jan 01 00:00:00 EST 2000

OSTI ID:872984

Richards, George A ^[1]; Janus, Michael C ^[2]; Robey, Edward H ^[3]

---

1. Morgantown, WV
2. Baltimore, MD
3. Westover, WV

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.

• Research Organization: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
• Assignee: United States of America represented by United States Department (Washington, DC)
• Patent Number(s): US 6058709
• OSTI ID: 872984
• Country of Publication: United States
• Language: English

Related Subjects

dynamically
balanced
fuel
nozzle
method
operation
apparatus
designed
reduce
undesirably
pressure
oscillations
lean
premix
combustion
systems
burning
hydrocarbon
fuels
provided
natural
acoustics
employed
generate
multiple
pockets
burned
combustor
counteract
caused
variations
heat
release
hybrid
active
passive
control
techniques
eliminate
wide
operating
range
moving
electronics
multiple fuel
operating range
fuel nozzle
combustion systems
hydrocarbon fuel
hydrocarbon fuels
systems burning
pressure oscillations
fuel pocket
fuel pockets
combustion oscillation
dynamically balanced
/60/431/