Experimental investigations on combustion characteristics of a swirl-stabilized premixed burner

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• 作者：Ju Hyeong Cho ; Han Seok Kim ; Min Kuk Kim…
• 关键词：Gas turbine ; Swirl ; stabilized premixed burner ; Combustion ; Emissions ; Pressure loss
• 刊名：Journal of Mechanical Science and Technology
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：30
• 期：2
• 页码：925-932
• 全文大小：1,751 KB
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• 作者单位：Ju Hyeong Cho (1)
  Han Seok Kim (1)
  Min Kuk Kim (1)
  Jeong Jae Hwang (1)
  Sang Min Lee (1)
  Ta Kwan Woo (2)
  
  1. Korea Institute of Machinery and Materials, Daejeon, 305-343, Korea
  2. SUNG-IL Turbine Co., Busan, 618-818, Korea
  
• 刊物类别：Engineering
• 刊物主题：Mechanical Engineering
  Structural Mechanics
  Control Engineering
  Industrial and Production Engineering
  
• 出版者：The Korean Society of Mechanical Engineers
• ISSN：1976-3824

文摘

Experimental investigations have been conducted to understand the combustion characteristics of a swirl-stabilized double-cone pre-mixed burner used for industrial gas turbines for power generation. NOx and CO emissions, extinction limit, combustion noise, pressure loss, and wall temperature distributions were measured for various operating conditions. Results show that NOx emissions are decreased with increasing air/fuel ratio or decreasing air load unless the air load is too small. CO emissions are also decreased with increasing air/fuel ratio, leading to a positive correlation between NOx and CO emissions. Flame extinction limit is reduced with increasing air flow rate as the flow residence time is reduced. Combustion noise has its peak amplitude at the frequencies of 150 or 300 Hz, which are considered to be the resonance frequencies of the longitudinal mode of the combustor. The noise level at the peak frequency is maximized when the flame is considered to be located near the burner exit. Pressure loss is decreased with the A/F ratio as the flame moves downstream out of the burner. Keywords Gas turbine Swirl-stabilized premixed burner Combustion Emissions Pressure loss