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2020 Vol.25, Issue 4 Preview Page

Research Article

Investigation on the Effect of the Burner Outlet Configuration on the Combustion Characteristics of a Swirl-premixed Burner

스월-예혼합 버너의 출구 형상 변화에 따른 연소 특성 분석

Hae Ji Ju1
,
Ju Hyeong Cho23†
,
Jeong Jae Hwang3
,
Min Kuk Kim3
,
Han Seok Kim3
,
Won June Lee3
주 해지1
,
조 주형23†
,
황 정재3
,
김 민국3
,
김 한석3
,
이 원준3
1Doctoral course, Environment & Energy Mechanical Engineering, University of Science & Technology
2Environment & Energy Mechanical Engineering, University of Science & Technology
3Department of clean fuel & power generation, Korea Institute of Machinery and Materials
1과학기술연합대학원대학교 환경에너지기계공학과 대학원
2과학기술연합대학원대학교 환경에너지기계공학과
3한국기계연구원 청정연료발전연구실
*antocho@kimm.re.kr
31 December 2020. pp. 47-55
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Abstract

This study investigated the effect of the outer recirculation zone(ORZ) on the combustion characteristics and NOX emissions. Numerical simulation and experimental test were conducted for the combustors with two types of the burner outlet. The ORZ is formed conspicuously for a flat type with sudden expansion outlet while it is formed in a negligible size for a curved type with gradual expansion outlet. In a higher adiabatic flame temperature(AFT) condition of 2020 K, the NOX emission of the flat type is increased by 19% compared with the curved type as the ORZ has long residence time and high temperature enough to produce the thermal NOX. On the other hand, the NOX emission of the flat type is decreased slightly in a lower AFT of 1850 K as the temperature of the ORZ is not high enough to significantly produce the thermal NOX. The tendency of the calculated NOX emission is consistent with the experiment results.

Keywords
Gas turbine combustor
Swirl-premixed burner
Outer recirculation flow
NOX emissions
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Information
  • Publisher :The Korean Society Combustion
  • Publisher(Ko) :한국연소학회
  • Journal Title :Journal of The Korean Society Combustion
  • Journal Title(Ko) :한국연소학회지
  • Volume : 25
  • No :4
  • Pages :47-55
  • Received Date : 2020-11-11
  • Revised Date : 2020-12-03
  • Accepted Date : 2020-12-15
  • DOI :https://doi.org/10.15231/jksc.2020.25.4.047
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