循环流化床锅炉水冷壁的热流密度分布  

Heat Flux Distribution Along Water Walls of Circulating Fluidized Boilers

作　　者：吕俊复[1] 于龙 岳光溪[1] 杨海瑞[1] 张建胜[1] 张缦 杨仲明 

机构地区：[1]清华大学热能工程系,北京100084 [2]哈尔滨锅炉有限责任公司,哈尔滨150040

出　　处：《动力工程》2007年第3期336-340,共5页Power Engineering

基　　金：863项目(2002AA529100);国家"十五"攻关项目(2004BA401A09)

摘　　要：超临界循环流化床锅炉的一个主要技术关键是炉膛受热面的横向热流分布。在管内工质温度不同、容量不同的3台循环流化床锅炉上,测量了不同高度上膜式水冷壁的金属壁温。将有限元算法用于水冷壁的换热分析,得到了循环流化床锅炉炉膛内烟气向水冷壁的换热系数分布。该结果为超临界CFB锅炉的设计提供了依据。One of the critical technical problems of supereritical circulating fluidized bed（CFB） boilers is the transverse heat flux distribution along combustion chamber＇ s heat dilevery surface. The membrane wall＇ s metal temperature was measured at different heights, of 3 circulating fluidized bed boilers, of different capacity, and with different working medium temperatures within the pipes. The heat transfer through the water walls was then analyzed by the finite elerment method, wherewith the distribution of the coefficients of heat transfer from gas, in the combustion chamber, to the water wall was then obtained. These results may serve as a reference basis for designing supercritical CFB boilers.

关 键 词：能源和动力工程 循环流化床锅炉 热流密度 分布 测量 

分 类 号：TK124[动力工程及工程热物理—工程热物理] TK224.1[动力工程及工程热物理—热能工程]