换热管内置螺旋线圈的阻力及传热特性实验研究  

Experiment research on the characteristics of resistance and heat transfer of the spiral coil inserts in heat exchange tube

作　　者：刘晓林[1] 林清宇[1] 冯振飞[1] 欧向波 刘宜仔 

机构地区：[1]广西大学化学化工学院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》2014年第2期1-4,共4页Science & Technology in Chemical Industry

基　　金：国家自然科学基金资助项目(29966001);广西自然科学基金资助项目(桂科青0447005);广西石化资源加工及过程强化技术重点实验室主任基金(Z012)

摘　　要：将9种不同结构尺寸的螺线线圈分别置入换热管内进行实验研究,分析了其阻力和传热特性.实验结果表明,在相同的Re下,管内插入螺旋线圈后流体压降和传热系数都有较大提高.通过多元线性回归分析,得到了压降增量和传热系数关联式.由传热性能分析,得到了综合评价因子φ=0.77～1.60,为如何选用性能优越的螺旋线圈提供了参考依据.The flow and heat transfer characteristics of a heat transfer tube equipped with 9 different structural parameters spiral coil inserts were studied experimentally. With the same Reynolds number, the results showed that the pressure drop and heat transfer coefficient of heat exchange tube have a great improvement after fitted with spiral coil inserts. The relating equation between pressure drop and heat transfer coefficient was observed by Multiple Linear Analysis. The factor φ=0. 77~1.60 of over- all performance evaluation parameter was observed, which was believed to provide reference basis of spiral coil inserts of superior performance.

关 键 词：强化传热 螺旋线圈 压降 传热系数 

分 类 号：TQ051.5[化学工程]