高水分烟气辐射换热特性分析与计算  

ANALYSIS AND CALCULATION ON THE CHARACTERISTICS FOR RADIATIVE HEAT TRANSFER OF FLUE GAS WITH HIGH MOISTURE CONTENT

作　　者：张衍国[1] 郭亮[1] 王补宣[1] 彭晓峰[1] 柯道友[1] 

机构地区：[1]清华大学热能工程系,北京100084

出　　处：《机械工程学报》2000年第4期21-24,共4页Journal of Mechanical Engineering

摘　　要：对基于光谱法窄带模型的Ｅｄｗａｒｄｓ方法进行了分析计算，将结果与使用传统辐射特性计算方法所取得的结果进行了对照分析，表明该方法能够保证足够的精度，较之传统方法有着更广泛的适用范围，可用于高水分烟气辐射特性计算；计算表明，在高水分条件下，温度及射线行程长度等因素对烟气辐射特性的作用规律与较低水分时趋势相似，但烟气的辐射、吸收能力显著强化。The Edwards method is used to calculate the radiative heat transfer characteristics of high mass fraction of moisture gas using the narrow spectrum model. The results are compared to previous calculation methods to show that the Edwards method is sufficiently accurate and can be used for a larger class of problem than traditional method, including the prediction of radiation characteristics of high mass fraction of moisture gas. The calculation results also show that for high mass fraction of moisture gas the temperature characteristics and the mean free path characteristic length related to the gas radiative characteristics vary in the same way as for low mass fraction of moisture gas, but the emission and absorption are greater.

关 键 词：城市垃圾焚化 高水分烟气 辐射 窄谱带 换热 

分 类 号：TK124[动力工程及工程热物理—工程热物理] TK229.929[动力工程及工程热物理—热能工程]