换热表面矩形翼布局对颗粒污垢与流阻特性的影响  

Effects of Rectangular Wing Layout at Heat Exchange Surface on Dirt Particles' Flow Resistance Characteristics

作　　者：张一龙[1] 王乐君[1] 韩志敏[2] 徐志明[2] 

机构地区：[1]东北电力大学自动化工程学院 [2]东北电力大学能源动力工程学院

出　　处：《化工机械》2016年第5期589-596,共8页Chemical Engineering & Machinery

基　　金：国家自然科学基金项目(51476025);东北电力大学博士科研基金项目(BSJXM-201513)

摘　　要：为研究矩形通道内部流动阻力与颗粒污垢间的关系,通过改变涡流发生器的布局方式,改变通道内部压降,研究涡流发生器对流阻和污垢热阻的影响,进而实现流阻与污垢热阻的关联研究。通过实验得出,在布置区间改变过程中,污垢热阻渐近值与结垢前后的压降差呈同相变化。在改变交错方式过程中,污垢热阻渐近值随压降的增加而减小。For purpose of investigating the relationship between internal flow resistance and dirt particles with- in the rectangular channel, having the layout of vortex generator and the channel＇ s internal pressure drop a- mended to analyze the vortex generator＇s effects on both convective resistance and fouling resistance was im- plemented, including the association studies on the flow resistance and fouling resistance. Experimental results show that, in the process of changing the layout, the fouling resistance＇ s gradual value changes similarly to the pressure drop difference before and after the scale formation ; and in the process of changing the way of in- terlaced, the fouling resistance＇ s gradual value decreases with the increase of the pressure drop.

关 键 词：换热器 涡流发生器 颗粒污垢 流动阻力 污垢热阻 

分 类 号：TQ051.5[化学工程]