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GE 7FA+e DLN-2.6 Gas Turbine Combustor : Part II Design of Lab Scale Dump Combustor  

Oh, Jeong-Seog (서울대학교 기계항공공학부 대학원)
Kim, Min-Ki (서울대학교 기계항공공학부 대학원)
Heo, Pil-Won (서울대학교 기계항공공학부 대학원)
Lee, Jang-Soo (서울대학교 기계항공공학부 대학원)
Yoon, Young-Bin (서울대학교 기계항공공학부)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.12, no.5, 2008 , pp. 51-59 More about this Journal
Abstract
DLN-2.6 combustion tuning was carried out for the maintenance of GE 7FA+e gas turbine at Seo-Incheon combined cycle power plant. DLN-2.6 combustion system has the higher level of yellow plume and combustion vibration problem in the initial operating mode than that of the base mode($100{\sim}160MW$). The objectives of this study are to investigate the causes of yellow plume and combustion vibration problems at the starting mode and to suggest the best operating condition for the reliable working of the real combustors. By the analysis of tuning data, we could conclude that a yellow plume is caused by the rich mixture(${\phi}{\sim}1$) in a PM 1 nozzle at mode 3($20{\sim}30MW$). In addition, the combustion vibration($120{\sim}140Hz$) might be related to the cold flow characteristics of PM 3 nozzles at mode 6B($40{\sim}45MW$).
Keywords
GE 7FA+e DLN-2.6; Model Dump Combustor; Plenum; Helmholtz Resonator; Combustion Instability;
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Times Cited By KSCI : 1  (Citation Analysis)
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