回转式空气预热器传热元件阻力特性试验研究  

Experimental Research on Friction Characteristics of Heat Transfer Elements in Rotary Air Preheater

作　　者：王谦[1] 王恩禄[1] 毛明江[1] 雷承勇[1] 王勇[2] 刘亮[2] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240 [2]上海锅炉厂有限公司,上海200245

出　　处：《锅炉技术》2011年第6期10-12,17,共4页Boiler Technology

摘　　要：回转式空气预热器的阻力特性是决定空气预热器转子尺寸的主要依据之一。回转式空气预热器的阻力特性主要受传热元件结构参数影响。试验利用大型传热风洞试验系统,在模拟回转式空气预热器实际运行工况条件下,通过测量试验段整包传热元件压降,得到了传热元件摩擦因子对数与雷诺数对数之间相互关系,为空气预热器数值计算提供基础数据。通过不同类型传热元件流动阻力随空气流速的变化规律间的比较,得到了控制沿程摩擦阻力是减少整个流动阻力关键的试验结果,为传热元件的优化选型提供了依据。Friction characteristics of rotary air preheater is one of the primary factors to determine the rotor size,while friction characteristics of rotary air preheater are mainly affected by the structural parameters of heat transfer elements.This test using the large-scale wind tunnel test system,by simulating the actual operating conditions,measures the pressure drop of test section of the whole pack of heat transfer elements and gets the relationship between logarithm of friction factor of heat transfer elements and logarithm of Reynolds number to provide basic data for preheater numerical calculation.At the same time,by comparing the variation regularity of flow resistance with air velocity for the different types of heat transfer elements,the result of the key of reducing the whole flow resistance being to control frictional resistance can be got,it also provides the basis for the heat transfer elements optimized selection.

关 键 词：回转式空气预热器 传热元件 阻力特性 雷诺数 

分 类 号：TK229[动力工程及工程热物理—动力机械及工程]