海拔高度对锅炉对流受热面总传热系数的影响  

Influences of Altitude on Total Heat Transfer Coefficient of Boiler Convective Heating Surface

作　　者：马有福[1] 刘聿拯[1] 袁益超[1] 周文铸[1] 胡晓红[1] 

机构地区：[1]上海理工大学动力工程学院

出　　处：《电站系统工程》2007年第5期27-28,共2页Power System Engineering

基　　金：上海高校选拔培养优秀青年教师科研专项基金(352377)

摘　　要：分析研究了高海拔环境下气压降低对锅炉对流受热面总传热系数的影响。结果表明对于锅炉对流受热面,随气压降低烟气侧对流换热系数不变,辐射换热系数减小,污染系数亦减小,但总传热系数缓慢增大,并根据对烟气动能的分析提出了低气压条件下污染系数的计算方法。The influences of altitude on the total heat transfer coefficient of convective heating surface in boiler arc analyzed and studied. Conclusions show that the convective heat transfer coefficient on fluc gas side is independent of atmospheric pressure, at the same time with the atmospheric pressure decreasing, the radiant heat transfer coefficient and fouling factor on fluc gas side decreased respectively, whereas the total heat transfer coefficient increased slightly. Moreover, a method of calculating fouling factor at low atmospheric conditions is performed on the basis of analyzing kinetic energy of flue gas.

关 键 词：锅炉 热力计算 海拔高度 传热系数 

分 类 号：TK222[动力工程及工程热物理—动力机械及工程]