Abstract
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In this study to investigate the characteristics of heat transfer and fatigue life as a part of oil burner of aged industrial boiler is replaced with gas burner in order to cope with the regulation of operation of old industrial boiler, the purpose of this study is to investigate the characteristics...
In this study to investigate the characteristics of heat transfer and fatigue life as a part of oil burner of aged industrial boiler is replaced with gas burner in order to cope with the regulation of operation of old industrial boiler, the purpose of this study is to investigate the characteristics of heat transfer and fatigue life for aged industrial boiler with a part of oil burner replaced with gas burner in order to cope with the regulation of operation of old industrial boiler, which are considered to be the main cause of the fine dusts. Numerical analysis was performed by using ANSYS FLUENT and ANSYS Mechanical, and SC-Type industrial boiler was selected as the study model. As a result of numerical analysis, it was found that the internal flow characteristics of the boiler were changed when the burner was operated with different gas burner positions, and the minimum fatigue life changed according to the internal flow characteristics of the boiler. When heat flow analysis was calculated with the classified case according to the burner position, it was classified into Case 2 which high temperature was concentrated in the primary superheater and Case 1 which high temperature was concentrated in the secondary superheater. As a result of fatigue life analysis of the superheater which is the most important component of the boiler components, Case 2 which high temperature is concentrated in the primary superheater, is higher than Case 1 which high temperature is concentrated in the secondary superheater. This result can be predicted as the cause of the characteristics of the boiler superheater Fin-Tube inside temperature distribution according to the burner position and combustion gas temperature distribution. The temperature inside the primary superheater is maintained at a relatively lower temperature than the temperature inside the secondary superheater. Therefore, high fatigue life can be predicted on Case 2 because the temperature balance between the primary superheater and the secondary superheater is kept on Case 2 in which low temperature is distributed in the superheater and high temperature combustion gas concentrates in the direction of the primary superheater.
주제어
#버너(Burner) 연소(Combustion) 피로수명해석(Fatigue analysis) 유체-구조 연성해석(FSI Analysis);
저자 |
이용성 |
학위수여기관 |
부산대학교 대학원 |
학위구분 |
국내석사 |
학과 |
기계공학부 에너지시스템전공 |
지도교수 |
하만영 |
발행년도 |
2019 |
총페이지 |
57 |
키워드 |
버너(Burner) 연소(Combustion) 피로수명해석(Fatigue analysis) 유체-구조 연성해석(FSI Analysis)
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언어 |
kor |
원문 URL |
http://www.riss.kr/link?id=T15098353&outLink=K
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정보원 |
한국교육학술정보원 |