换热管内旋向自交叉转子强化传热性能研究  

Study of the Intensified Heat Transfer Performance of a Heat Exchanger Tube Inner Rotation Direction Self-cross Rotor

作　　者：赵本华[1] 何雪涛[1] 阎华[1] 杨卫民[1] 

机构地区：[1]北京化工大学机电工程学院,北京100029

出　　处：《热能动力工程》2012年第3期307-311,391,共5页Journal of Engineering for Thermal Energy and Power

基　　金：北京市自然科学基金资助项目(3102023)

摘　　要：利用综合传热性能实验台,研究对比旋向自交叉转子、同向转子的换热器和光管的传热性能。结果发现:通过Webb性能比较方法,在同样面积和同等泵功率情况下,同向转子比光管换热器的换热量最大可提高为6.99%,而旋向自交叉转子比光管的换热量最大可提高8.11%,并计算推导了旋向自交叉转子与同向转子、光管之间的准则关联式;同时研究了换热量与转子外径的关系,结果发现换热量随转子外径变大而增多。On a comprehensive heat transfer performance test rig,studied and compared was the heat transfer performance of a rotational direction self-cross rotor and an identical direction rotor heat exchanger with that of a bare tube.It has been found that through the Webb performance comparison method,at an identical heat exchange surface area and a same power of the water pumps,the heat exchange quantity of the identical direction heat exchanger is 6.99 % higher than that of the bare-tube heat exchanger while that of the rotational direction self-cross rotor heat exchanger is 8.11 % higher than that of the bare tube heat exchanger to a maximal extent.On this basis,the authors have also calculated and derived a criterion correlation formula among the rotational direction self-cross rotor,identical direction rotor and bare tube heat exchanger and in the meantime,studied the relationship between the heat exchange quantity and the outer diameter of the rotor,discovering that the heat exchange quantity increases with an increase of the outer diameter of the rotor.

关 键 词：管壳式换热器 旋向交叉转子 同向转子 强化传热性能 

分 类 号：TK124[动力工程及工程热物理—工程热物理]