有无混合器对圆形直管内空气传热膜系数α影响的研究  

Study on Heat Transfer Film Coefficient α of Air in Intensified and Straight Tube

作　　者：卢政明[1] 罗罹[1] 

机构地区：[1]金华职业技术学院,浙江金华321007

出　　处：《广州化工》2012年第5期106-107,115,共3页GuangZhou Chemical Industry

摘　　要：研究了空气分别在有无混合器的圆形直管内湍流流动时的传热膜系数α,比较了两种情况下α及准数关联式的差异。结果表明:在相同条件下,空气在有混合器的强化传热管中其α远高于无混合器的圆形直管;且空气在强化管内湍流时的α其准数关联式不同于圆形直管。Film heat transfer coefficient α of air and its associative parameter in intensified and straight tube were studied.The difference of two cases was also compared.The result showed that in the same condition,the coefficient α in intensified tube distinctly exceeded the straight tube and the associative parameter of intensified tube differed straight tube.

关 键 词：传热膜系数α 强化传热管 准数关联式 

分 类 号：TQ0[化学工程]