弦月形狭缝通道内液氮受迫流动沸腾传热强化的研究  

STUDY ON BOILING HEAT TRANSFER ENHANCEMENT OF FORCED LIQUID NITROGEN FLOW IN LUNATE NARROW CHANNEL

作　　者：张瑞[1] 焦安军[2] 

机构地区：[1]密歇根州立大学机械工程系 [2]西安交通大学制冷与低温工程系,西安710049

出　　处：《低温工程》2001年第5期42-48,共7页Cryogenics

摘　　要：研究了液氮在弦月形狭缝通道中受迫流动沸腾时的传热特性。发现液氮在弦月形狭缝通道中的受迫流动沸腾具有很高的换热系数 ,有显著的强化换热效果。详细分析了弦月形狭缝通道内液氮沸腾传热及流动的偏心特性。研究对于进一步理解狭缝通道沸腾传热强化的机理和狭缝强化传热技术在工程中的应用有着重要的意义。The boiling heat transfer of forced liquid nitrogen flow in lunate narrow channels is studied The experimental results prove that the boiling heat transfer of forced liquid flow in these channels has high heat transfer coefficient and manifest enhancement effect The eccentric behavior of the flow boiling heat transfer in lunate narrow channel is studied in detail The work has great significance on the understanding of the mechanism of heat transfer enhancement in narrow channel and on the application of this technique in the industry

关 键 词：弦月形狭缝通道 沸腾传热 传热强化 传热机理 液氮 受迫流动 

分 类 号：TK124[动力工程及工程热物理—工程热物理]