Jeong Myun Kim, Karam Han, Byeong Seon Choi, Seung Heon Song, Mingyu Park, Myung Hwan Choi
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Effect of coal-fired power plant flexible operating method on boiler header fatigue life
Due to the increase in renewable power generation sources, flexible operation is being required for large-capacity coal-fired power plants. Fatigue needs to be considered because the possibility of fatigue damage to equipment increases compared with rated operation. Existing studies qualitatively analyzed the impact on power generation facilities, and quantitative comparison studies were not conducted. Accordingly, this study comparatively analyzed the impact of flexible operation methods on the lifetime of boiler headers. Finite element analysis models were created to analyze stress in transient operation conditions, and fatigue rupture life was derived using fatigue test data from previous research. Then, as a result of assessing the fatigue life according to design criteria, the low load operation mode was confirmed to have a fatigue life 2.57 to 4.61 times longer than the start & stop mode. This study is intended to provide technical information for decision-making on flexible operation methods of power plants.
期刊介绍：
The aim of the Journal of Mechanical Science and Technology is to provide an international forum for the publication and dissemination of original work that contributes to the understanding of the main and related disciplines of mechanical engineering, either empirical or theoretical. The Journal covers the whole spectrum of mechanical engineering, which includes, but is not limited to, Materials and Design Engineering, Production Engineering and Fusion Technology, Dynamics, Vibration and Control, Thermal Engineering and Fluids Engineering.
Manuscripts may fall into several categories including full articles, solicited reviews or commentary, and unsolicited reviews or commentary related to the core of mechanical engineering.
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