非对称波节管换热和阻力性能的实验研究  

Experimental Study on Heat Transfer and Resistance Performance in Heat Exchanger Using Asymmetric Corrugated Tube

作　　者：陈鑫[1] 王维[1] 李炳熙[1] 张亚宁[1] CHEN Xin;WANG Wei;LI Bing-Xi;ZHANG Ya-Ning(School of Energy Science and Engineering,Harbin University of Technology,Harbin 150001,China)

机构地区：[1]哈尔滨工业大学能源科学与工程学院,哈尔滨150001

出　　处：《工程热物理学报》2020年第7期1797-1807,共11页Journal of Engineering Thermophysics

基　　金：国家自然科学基金项目(No.51476042)。

摘　　要：通过实验的方法,分别分析了采用大导角半径(Large corrugation fillet radii,rl)的非对称波节管、对称波节管和光管管壳双侧的传热性能和阻力性能的影响规律,研究非对称波节管流向对换热器总换热性能和总阻力性能的影响。研究结果表明,非对称波节管和对称波节管的综合换热性能均优于光管,且壳侧的综合换热性能提升优于管侧。非对称波节管的换热性能与对称波节管差别较小,但阻力性能更低,rl位于管侧波节前流段或壳侧波节后流段均可以明显降低阻力性能。非对称波节管换热器在逆流下,rl在管侧前流段时,换热器整体综合换热性能最优,平均是光管换热器的1.44倍;在并流下,rl在管侧后流段时,换热器整体综合换热性能相对更好,比光管换热器提升了39.07%。The heat transfer and resistance performance in heat exchangers using smooth tube(ST),symmetric corrugated tube(SCT),and asymmetric corrugated tube(ACT)with large corrugation fillet radii(rl)are investigated experimentally,and the total heat transfer and resistance performance of the flow directions on ACT are analyzed.The results show that the comprehensive performance of SCT and ACT are more obvious than that of ST,and the heat transfer and resistance performance of SCT and ACT on the shell side are better than those on the tube side.The heat transfer performance of ACT is slightly different from that of SCT,but the resistance performance is lower.The resistance performance of ACT could be reduced significantly when rl located at upstream on tube side or downstream on shell side.The total comprehensive performance of ACT is superior than that of ST by 1.44 times when rl located at upstream on tube side with counter flow,and by 1.39 times when rl located at downstream on tube side with parallel flow.

关 键 词：波节管 实验 总换热系数 总阻力系数 综合传热性能 

分 类 号：TK123[动力工程及工程热物理—工程热物理]