螺旋槽管外含高浓度不凝组分蒸汽冷凝传热研究  

Investigation of heat transfer of vapor condensation with high concentration of noncondensable gas on spirally grooved tube

作　　者：高学农[1] 叶国兴[1] 

机构地区：[1]华南理工大学化学工程研究所

出　　处：《化学工程》1996年第3期27-30,共4页Chemical Engineering(China)

摘　　要：分析了含高浓度不凝组分蒸汽在立式螺旋槽管表面强制对流冷凝的传热机理。在不凝性组分体积百分浓度超过９０％时，螺旋槽管的强化传热效果不明显，而含量为４４％～９０％时，螺旋槽管总换热系数比光滑管提高２０％～３５％。The physical model and mathematical analysis methods of vapor condensation in the presence of high concentration of noncondensable gas on the surface of the vertical spirally grooved tube based on film theory have been established. When the percentage concentration by volume is above 90%,the heat transfer enhancement effect of spirally grooved tube is not obvious, but when the range is in 44% ～90%, the total heat transfer coefficients can be increased by 20%～35%, as compared with the smooth tube.

关 键 词：螺旋槽管 双膜理论 膜状凝结 蒸汽冷凝 传热 

分 类 号：TQ026.2[化学工程]