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.
出处
《化工机械》
CAS
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)
关键词
换热器
涡流发生器
颗粒污垢
流动阻力
污垢热阻
heat exchanger, vortex generator, particle fouling, flow resistance, fouling resistance
