Steam Temperature Characteristics in Boiler Water Wall Tubes Based on Furnace CFD and Hydrodynamic Coupling Model

Xin Guo, Liangwei Xia, Guangbo Zhao, Guohua Wei, Yongjie Wang, Yaning Yin, Jianming Guo and Xiaohan Ren
Additional contact information
Xin Guo: Research Institute of Boiler, Harbin Boiler Company Limited, Harbin 150001, China
Liangwei Xia: Research Institute of Boiler, Harbin Boiler Company Limited, Harbin 150001, China
Guangbo Zhao: School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Guohua Wei: Research Institute of Boiler, Harbin Boiler Company Limited, Harbin 150001, China
Yongjie Wang: Research Institute of Boiler, Harbin Boiler Company Limited, Harbin 150001, China
Yaning Yin: Research Institute of Boiler, Harbin Boiler Company Limited, Harbin 150001, China
Jianming Guo: Research Institute of Boiler, Harbin Boiler Company Limited, Harbin 150001, China
Xiaohan Ren: Institute of Thermal Science and Technology, Shandong University, Jinan 250061, China

Energies, 2022, vol. 15, issue 13, 1-28

Abstract: With the development of power plant units of higher capacity and with improved parameters, the proportion of high-capacity units for generating power has increased; this requires large capacity units to take responsibility for power-grid peak shaving. When the boiler operates at low loads, the working fluid in the boiler water wall tubes is subjected to high heat flux in the furnace, which can cause heat transfer deterioration, tube overheating or even leakage. Therefore, it is particularly important to study the reliability of the boiler hydrodynamic cycle during peak shaving (low load operation). This study takes a 1000 MW ultra-supercritical single-reheat Π type boiler with single furnace and double tangential firing as the research object. A furnace Computational Fluid Dynamics (CFD) and hydrodynamic coupling analysis model is established and verified according to the actual operating conditions on site. The calculation results show that the simulated value is in good agreement with the actual operating value. Therefore, the model established in this study can reflect the real situation of the on-site furnace to a certain extent, and has high reliability. Based on the fitting results, the causes of steam temperature deviation of the boiler water wall are analyzed, and measures to reduce the deviation are proposed to provide a necessary basis for power plant operation and boiler design.

Keywords: 1000 MW; boiler; coupling model; User Defined Function (UDF); hydrodynamic; low load (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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