结构参数对缠绕管式换热器传热性能的影响  

Influence of Structural Parameters on the Heat Transfer Performance of Wound Tube Heat Exchangers

作　　者：张安龙 赵雨 汪枫 吕婉婷 ZHANG Anlong;ZHAO Yu;WANG Feng;L Wanting(Sichuan Chuanrun Power Equipment Limited Company,Zigong 643000,Sichuan,China)

机构地区：[1]四川川润动力设备有限公司,四川自贡643000

出　　处：《科技和产业》2024年第19期258-263,共6页Science Technology and Industry

摘　　要：缠绕管式换热器作为一种新型高效的换热器,具有传热系数高、结构紧凑,且能够同时适用于多种流体进行换热的特点。在基于某CO_(2)与导热油实际工程换热项目基础上,研究换热器的螺旋倾角θ、缠绕管外径D、径向间隙P_(d)、轴向间隙P_(l)、中芯筒直径D_(Z)与缠绕管层数C_(S)对换热器传热性能、壳程压降ΔP_(S)与管程压降ΔP_(T)的影响。结果表明:随着θ、D、P_(d)、D_(Z)与C_(S)的增加以及P l的减小,换热器的传热性能逐渐降低;在这些结构参数中,对传热性能影响最大的是θ,最小的是P_(l);在改变结构参数增大换热器传热性能的同时,往往会导致ΔP_(S)与ΔP_(T)增加。因此,在工程实际项目中进行换热器的设计计算时,需要综合考虑传热性能与压降,最终设计出ΔP_(S)与ΔP_(T)在允许范围内具有更大传热性能的缠绕管式换热器。As a new and efficient heat exchanger,the wrapped tube heat exchanger has the characteristics of high heat transfer coefficient,compact structure,and can be used for heat exchange of multiple fluids simultaneously.On the basis of an actual engineering heat exchange project involving CO_(2)and thermal oil,the effects of the spiral inclination angleθ,outer diameter of the wound tube D,radial clearance P d,axial clearance P_(l),core tube diameter D_(Z),and number of layers C_(S)of the wound tube on the heat transfer performance,shell side pressure dropΔP_(S),and tube side pressure dropΔP_(T)of the heat exchanger were studied.The results indicate that asθ,D,P_(d),D_(Z)and C_(S)increase,as well as P_(l)decreases,the heat transfer performance of the heat exchanger gradually decreases.Among these structural parameters,the one with the greatest impact on heat transfer performance isθ,the smallest one is P_(l).While changing the structural parameters to increase the heat transfer performance of the heat exchanger,it often leads to an increase inΔP S andΔP_(T).Therefore,when designing and calculating heat exchangers in practical engineering projects,it is necessary to comprehensively consider heat transfer performance and pressure drop,and ultimately design a wound tube heat exchanger with greater heat transfer performance within the allowable range forΔP_(S)andΔP _(T).

关 键 词：缠绕管式换热器 结构参数 传热性能 压降 

分 类 号：TK124[动力工程及工程热物理—工程热物理]