水垢对管壳式冷凝器传热影响的定量化研究  

Quantitative study on the influence of scale on heat transfer of tube and shell condenser

作　　者：张晓彤 吴世春 郭柄江 张雅静 ZHANG Xiao-tong,WU Shi-chun,GUO Bing-jiang,et al

机构地区：[1]辽宁骏升科技有限公司,辽宁鞍山114044 [2]辽宁科技大学,辽宁鞍山114051 [3]秦皇岛技师学院,河北秦皇岛066004

出　　处：《节能》2018年第6期62-64,共3页Energy Conservation

摘　　要：为了定量化表征水垢对管壳式冷凝器传热的影响,采用ANSYS软件的热分析模块,考虑管内强制对流换热、管外冷凝换热,充分考虑水垢对传热的影响,建立管壳式冷凝器管程的轴对称传热的有限元模型。运用此有限元模型分析水垢厚度对管程传热的影响,结果表明:水垢越厚,管的传热能力越小,水垢厚度为1mm的热效率仅为无垢时的39%,因此,有效地清除水垢可显著提高热效率。For the purpose of quantitative characterization for the influence of scale on heat transfer of tube and shell condenser, a finite element model about tube and shell condenser＇s tube side ohere axial symmetric is created. Considering forced convection heat transfer in tube and condensation heat transfer out tube, the influence of scale on heat transfer was taken into consideration adequately, by using ANSYS thermal analysis module. This paper analyses the influence of scale thickness on heat transfer of tube side through this finite element model, and the result shows that： the thicker of scale, the ability of tube heat transfer is smaller, efficiency of heat transfer is only 39% when the scale thickness is 1 mm compared with none scale. As a result, efficiency of heat transfer can be improved effectively by removing scale.

关 键 词：水垢 管壳式冷凝器 传热 有限元 

分 类 号：TE965[石油与天然气工程—石油机械设备]