磁场对水蒸气冷凝传热系数的影响  

Effects of Magnetic Field on the Condensation Heat Transfer Coefficient of Steam

作　　者：吴松海[1] 孙永利[1] 贾绍义[1] 

机构地区：[1]天津大学化工学院,天津300072

出　　处：《磁性材料及器件》2005年第6期33-35,39,共4页Journal of Magnetic Materials and Devices

摘　　要：为了研究磁场对水蒸气冷凝传热系数影响,在建立测定实验装置后,在不同的液膜雷诺数下分别测定了磁感应强度为0.25T、0.36T和0.55T磁场下的水蒸气冷凝传热系数,研究其数值的变化。结果表明,水蒸气冷凝传热系数在实验范围内最大可比无磁场时增大10%,同时随着液膜雷诺数的升高,水蒸气冷凝传热系数受磁场的影响减弱。同时对磁场下水蒸气冷凝传热系数影响的基本方程进行了推导。To research the effects of magnetic field on the condensation heat transfer coefficient of steam, the condensation heat transfer coefficient of steam was measured at magnetic induction strength of 0.25Z 0.36T and 0.55T for different Renault number of liquid membrane. A maximum increase of condensation heat transfer coefficient of steam of 10% was observed, and the effect decreases with increasing Renault number of liquid membrane. Finally, the equation for condensation heat transfer coefficient of steam in magnetic field is derived.

关 键 词：磁场 水蒸气 冷凝传热系数 液膜雷诺数 努赛尔数 

分 类 号：TQ021.3[化学工程]