Mathematical modeling and thermal-hydrodynamic analysis of vertical water wall in a SCFB boiler with annular furnace(PDF)
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Mathematical modeling and thermal-hydrodynamic analysis of vertical water wall in a SCFB boiler with annular furnace(PDF)
- 发表刊物：
- Applied Thermal Engineering
- 摘要：
- In this study, a mathematical model for a 660MW SCFB boiler design with annular furnace was deduced
and thermal–hydrodynamic analysis was performed to improve the design and operation of water wall.
Based on the water wall structure and heat flux distribution of the SCFB boiler, the connection style, pressure
drop, mass flux, metal temperature, and phase transition position in water wall were optimally selected and numerically analyzed. The calculation results show that the minimum deviation of mass flux among water wall presents at connection style 1, in which outer-front wall, outer-left (right) wall, innerfront wall, and inner-left (right) wall are connected to the same steam-water separator. The gravitational pressure drop decreases while the frictional pressure drop increases with the rise of fluid temperature. Moreover, vertical upward parallel tubes present positive flow response characteristic with low mass flow rate. The subcooled length and superheated length shrink while the saturated length expands with the reduction of partial loads.
- 合写作者：
- Wei Zhang, Huan Wang, Kai Yan, Tuo Zhou, Chang'an Wang, Kai Chen, Defu Che
- 是否译文：
- 否
- 发表时间：
- 2016-04-07