中压下三维内翅管中的下降沸腾两相流与传热  

Downward Flow Boiling in Vertical ThreeDimensionalInternal SpineFin Tube

作　　者：明岗[1,2] 张洪济[1,2] 

机构地区：[1]同济大学 [2]重庆大学

出　　处：《核动力工程》1998年第3期224-229,共6页Nuclear Power Engineering

摘　　要：对中压下水在三维内翅管中的下降沸腾两相流与传热性能进行了试验研究。试验压力Ｐ＝３．９～１０．２ＭＰａ，质量流速Ｇ＝３６０～１２８０ｋｇ／ｍ２·ｓ，热流密度ｑ＝１．０×１０５～１．５×１０６Ｗ／ｍ２，入口过冷度Δｔｓｕｂ＝２～５℃，平均干度数Ｘｍ＝２．５％～３０％。揭示了摩擦阻力压降和传热性能随主要参数变化的特征，并与光滑管中的传热及流阻、三维内翅管中上升沸腾两相流动时的传热与流阻性能进行了比较。建立了流阻与传热的关联式。he experiment and analysis on the frictional pressure drop and heat transfer characters of water during twophase downward flow in a vertical threedimensional interal spinefin tube is conducted.The pressure P=3.9～10.2MPa,the mass velocity G=360～1280kg/m2·s,the density of heat flow rate q=1×10 5～1.5×10 6,the subcooling of inlet degree Δt=2～5℃,the mean quality Xm=2.5%～30%.The characters of the frictional pressure drop and heat transfer,varying with the main parameters,are disclosed and compared with those of upward flow both in the threedimensional internal spine fin and in the smooth tubes.The corrections are established.　　

关 键 词：三维内翅管 两相流 沸腾传热 传热性能 

分 类 号：TK17[动力工程及工程热物理—热能工程]