Performance Characteristics Analysis of Supercritical Boiler Water Wall

摘要：

The key technology of supercritical boiler is water wall, this paper is mainly analyzed the dangerous working conditions of supercritical boiler water wall. On the one hand, from working substances point of view, we adopt traditional pressure drop method to judge the heat transfer deterioration position under sub-critical pressure; on the other hand, we use temperature test point combining calculation formula of wall temperature to judge the heat transfer deterioration position under supercritical pressure, and combining improved zoned thermal calculation method to get wall surface thermal load distribution map. Through an instance calculation, when boiler unit under 40％ of full load, the maximum thermal load is near 20 meters of furnace height and when it under 100％ full loads, the maximum thermal load is near 30 meters of furnace height. So we can control all kinds of heat transfer deterioration position through changing hydrodynamic condition and ward off the highest thermal load area, which is significant to operation.

关键词： Ultra-supercritical Thermal calculation Hydrodynamic calculation Heat transfer characteristic

作者: Rui Cao

作者单位: Mailbox 232, North China Electric Power University, Baoding, Hebei, China

会议类型: 国际会议

会议名称: 2011 International Conference on Mechatronics and Materials Processing(2011年机电一体化与材料加工国际会议 ICMMP)

会议地点: 广州

会议语种:英文

页码: 2248-2251

在线出版日期: 2011-11-18（万方平台首次上网日期，不代表论文的发表时间）