回转式空气预热器冷端金属温度试验和数值模化研究  

Experimental and numerical mode studies on cold end metal temperature of 600MW rotating air heater

作　　者：潘维[1] 池作和[1] 李戈[1] 孙荣华[2] 周昊[1] 蒋啸[1] 岑可法[1] 

机构地区：[1]能源清洁利用与环境教育部重点实验室,浙江杭州310027 [2]北仑发电厂,浙江宁波315800

出　　处：《浙江大学学报（工学版）》2002年第5期494-497,503,共5页Journal of Zhejiang University：Engineering Science

基　　金：国家重点基础研究发展规划资助项目 (G19990 2 2 2 0 4-0 3 ) ;全国优秀博士论文专项基金资助 .

摘　　要：在实际运行中 ,回转式空气预热器冷端金属受热面容易发生低温腐蚀和堵灰 .通过现场试验确定了大型回转式空气预热器在不同工况下低温受热面温度变化曲线和平均温度 .以试验结果为基础 ,采用空气预热器传热数学模型 ,用数值计算方法对冷端金属温度进行了数值模拟 .数值计算结果与试验结果吻合良好 ,为暖风器的经济运行提供了理论和实验依据 ,提高了电厂经济性 .In practical operation, the cold end metal of a Rotating Air Heater iseasily eroded. This may affect the heat transfer and lower the economic operation. A steam preheater is normally used to increase the average temperature of the cold end. Because the heat transfer surfaces are rotating all the time, the measurement is very difficult. Therefore a smart method to measure the temperature was designed and the temperature distributions under different experimental conditions were obtained. A suitable numerical simulation model was selected and programmed in Fortran Language. The calculation results agreed well with the measured results.

关 键 词：回转式空气预热器 冷端金属温度 低温腐蚀 数学模型 温度测试 数值模拟 电厂 

分 类 号：TM621.2[电气工程—电力系统及自动化] TK223.34[动力工程及工程热物理—动力机械及工程]