R－12蒸气在三维内翅管中凝结流动的传热及流阻特性  

Heat Transfer and Flow Resistance of the Forced Convection condensation of R-12 Vapor in Three-Dimensional Horizontal Internal Spine-Fin Tubes

作　　者：童明伟[1] 张洪济[1] 

机构地区：[1]重庆大学热力工程系

出　　处：《重庆大学学报（自然科学版）》1996年第4期66-70,共5页Journal of Chongqing University

摘　　要：报道了Ｒ－１２蒸气在三维内翅管中的流动冷凝实验，结果表明：与光滑面相比，Ｒ－１２蒸气在三维内翅管中的凝结换热系数增加了１０７％，而流阻只增加了１８％，并对此进行了相应的分析，建立了预测传热性能和流阻的关联式。The three-dimensional internal spine-fin tube is a new generation of heat transfer tube,in which the enhancement effects of channels,dropwise condensation and extended surface are all incorporated. The experiment of the forced convection condensation of R-12 vapor in threedimensional horizontal internal spine-fin tubes is reported in the present paper. The results show that as compared with the case of smooth tubes,the condensation heat transfer coefficient of R-12 in the tubes is increased by 107 %,and the flow resistance is increased only by 18 %. So the threeudimensional internal spine-fin tube is an advanced heat transfer enhancement tube with notable energysaving effect. The corresponding analysis is carried out and the correlations for predicting the heat transfer performance and the flow resistance are established.

关 键 词：内翅管 三维内翅管 凝结传热 流阻 蒸气 

分 类 号：TK124[动力工程及工程热物理—工程热物理]