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搅拌薄膜蒸发器的蒸发机理 及强化研究进展
2013-03-19 15:59:45 益择发布及强化研究进展
马四朋,杨卓如,涂伟萍,陈焕钦
(华南理工大学化工学院,广东广州510641)
摘要:本文对搅拌薄膜蒸发器的流体力学、传热传质、驱动动力的研究现状进行了评
述,指出目前设计基础资料仍欠缺,应加大蒸发机理的研究力度。通过总结强化方
法,本文指出应对如何促进刮板前缘的涡旋与液膜的混合与更新作进一步的研究,并
应把强化传热的“有源”技术和“无源”技术相结合,才能把刮板搅拌动力更有效地用
于强化搅拌薄膜蒸发器的蒸发过程。
关键词:搅拌;薄膜;蒸发;传热强化;综述
中图分类号:TQ02816+ 1 ; 文献标识码:A 文章编号:1004 - 9533(2002) 02 - 0185 - 06
Review of Evaporation Mechanism and Enhancement of
the Aigitated Thin - Film Evaporators
MA Si - peng ,YANG Zhou - ru ,TU Wei - ping ,CHEN Huan - qin
(College of Chemical Engineering ,South China University of Technology ,Guangdong Guangzhou 510641 ,China)
Abstract :The studies on the fluid mechanics ,heat and mass transfer and power consumption of
the agitated thin - film evaporators are reviewed. It should be pointed that the more extensive
and intensive study on the evaporation mechanismof the agitated thin - film evaporators is nec2
essary because the basic design data are lack up - to - date. It is suggested that a new method
should be applied of combining both the“active”method and“passive”method used in heat
transfer enhancement together ,in order to use the power of the rotor blades more effectively for
the enhancement of this evaporation process.
Key words :agitation ;thin - film;evaporation ;heat transfer enhancement ;review
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