低压省煤器传热特性的实验研究  

Research on Heat Transfer Characteristics of Low Pressure Economizer

作　　者：顾凯颖 张忠孝[1] 胡广涛[2] 田莉勤 

机构地区：[1]上海理工大学能源与动力工程学院 [2]榆林学院

出　　处：《电站系统工程》2014年第5期30-32,共3页Power System Engineering

摘　　要：通过搭建低压省煤器换热实验台,对换热器中常用的光管、翅片管在低温烟气中的换热特性进行了实验研究,拟合得到了光管与翅片管烟气侧对流放热系数的回归公式,拟合相关度分别为0.985与0.972。结果表明:在相同条件下,翅片管的传热系数约是光管的1.55～2倍,且随着烟气速度的增加,换热系数增大。Through the heat transfer test of low pressure economizer, researches were done for light tubes and finned tubes which often used in heat exchanger. We get the regression equation of convective heat transfer coefficients for light tubes and fin tubes. Fitting correlation are 0.985 and 0.972. The heat transfer coefficient of finned tube is 1.55-2 times higher than light tube under the same condition, and it＇s enhanced with the increase of gas velocity.

关 键 词：余热利用 低压省煤器 传热特性 

分 类 号：TK115[动力工程及工程热物理—热能工程]