B311 EFFECTS OF DIRECT WATER INJECTION IN A COMBUSTOR OF GAS FUELED GAS TURBINE SYSTEM(Turbulent flame-3)
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概要
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The atmosphere has been severely polluted due to emissions such as NOx, CO, and UHC from the combustion systems including gas turbine. Various technologies, such as steam or water injection into the combustor, catalytic converter, and modification of combustor configuration have been developed to reduce these emissions. Among these methods, it is known that water injection method reduces the formation of thermal NOx, since the temperature decreases during the droplet evaporation, and also reduces that of prompt NOx simultaneously due to reaction mechanism removing CH radical. In this paper, the characteristics of the combustion flow field for the gas turbine combustor with the direct fresh water injection method is numerically studied in order to evaluate the emissions, especially NOx, in a combustor of 1MW class packaged type gas turbine co-generation system. In the numerical analysis, Lagrangian approach for the behavior of water droplets is employed, and the assumed PDF model is applied to investigate the turbulent reacting flow. The results show that as the amount of water injection increases, the temperature and NOx formation of downstream region of combustor increase since the amount of unburned fuel at the upstream region that would burn downstream increases. When the flow rate of the water injected is fixed, mean water droplet diameter influenced the emissions and temperature distributions within the combustor, especially at the primary combustion zone of combustor.
- 一般社団法人日本機械学会の論文
- 2000-10-01
著者
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KIM Ho
Department of Neurosurgery, Division of Biostatistics in Graduate School of Public Health University
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MIN Byoung
Department of Chemical Engineering, Yonsei University
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Min Byoung
Department Of Biomedical Engineering College Of Medicine Seoul National University
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Min Byoung
Department Of Mechanical Engineering Graduate School Korea University
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Sohn Wha
Gas Utilization Dept. R&d Training Center Korea Gas Cooperation
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Kim Ho
Department Of Dermatology Kyungpook National University School Of Medicine
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Park Simsoo
Department of Mechanical Engineering, Korea University
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Park Simsoo
Department Of Mechanical Engineering Korea University
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Kim Ho
Department Of Biostatistics And Epidemiology School Of Public Health & Institute Of Health And E
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Kim Ho
Department Of Mechanical Engineering Korea University
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Park Simsoo
Department Of Mechanical Engineering Graduate School Of Korea University
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Kim Ho
Department of Mechanical Engineering, Korea University
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