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Evaluation of fuel injection configurations to control carbon and soot formation in small GT combustorsAn experimental program to investigate hardware configurations which attempt to minimize carbon formation and soot production without sacrificing performance in small gas turbine combustors has been conducted at the United Technologies Research Center. Four fuel injectors, embodying either airblast atomization, pressure atomization, or fuel vaporization techniques, were combined with nozzle air swirlers and injector sheaths, and evaluated at test conditions which included and extended beyond standard small gas turbine combustor operation. Extensive testing was accomplished with configurations embodying either a spill return or a T-vaporizer injector. Minimal carbon deposits were observed on the spill return nozzle for tests using either Jet A or ERBS test fuel. A more extensive film of soft carbon was observed on the vaporizer after operation at standard engine conditions, with large carbonaceous growths forming on the device during off-design operation at low combustor inlet temperature. Test results indicated that smoke emission levels depended on the combustor fluid mechanics (especially the mixing rates near the injector), the atomization quality of the injector and the fuel hydrogen content.
Document ID
19820051506
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Rosfjord, T. J.
(United Technologies Research Center East Hartford, CT, United States)
Briehl, D.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 10, 2013
Publication Date
June 1, 1982
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
AIAA PAPER 82-1175
Report Number: AIAA PAPER 82-1175
Meeting Information
Meeting: Joint Propulsion Conference
Location: Cleveland, OH
Start Date: June 21, 1982
End Date: June 23, 1982
Sponsors: AIAA, SAE, and ASME
Accession Number
82A35041
Distribution Limits
Public
Copyright
Other

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