换热管内置开边槽扭带的阻力与传热特性研究  

Heat transfer and resistance characteristics in a circular tube fitted with triangular groove twisted-tape insert

作　　者：詹三江[1] 林清宇[1,2] 孙瑞娟[1] 冯振飞[1,2] 

机构地区：[1]广西大学化学与化工学院,广西南宁530004 [2]广西石化资源加工及过程强化技术重点实验室,广西南宁530004

出　　处：《化工科技》2012年第1期6-9,共4页Science & Technology in Chemical Industry

基　　金：广西自然科学基金项目(桂科青0447005);广西大学基金项目

摘　　要：将21种不同结构参数的铝制扭带分别置入换热管进行冷态和热态实验,研究并分析了换热管内置开三角形边槽扭带的阻力和传热特性。实验结果表明,插入开边槽扭带后管内的流动阻力和传热系数都有较大的提高。通过多元线性回归分析,得到了相应的阻力系数关联式和换热系数关联式。由强化传热性能评价分析,得到评价因子Φ=1.05～1.35,证明了所研究的扭带具有强化传热的应用价值。This paper reported an experimental study on heat transfer and friction resistance character- istics in a heat transfer tube equipped with triangular groove twisted-tape insert. The cold and heat ex- periments of 21 different structural parameters twisted-tapes were proceeded. The results showed that the friction resistance and heat transfer coefficient of heat transfer tubes have a grate improvement af- ter fitted with triangular groove twisted-tape. The resistance coefficient equation and heat transfer co- efficient equation were obtained by Multiple Linear Regression Analysis and the factor 4= 1.05~1.35 was observed by comprehensively estimating and analysis, it indicated that the transfer enhancement of triangular groove twisted-tape is good.

关 键 词：强化传热 开边槽扭带 阻力特性 换热管 

分 类 号：TQ051.5[化学工程]