期刊论文

Qing, D.-F.(qingdefan@163.com)

中文

现代化工

0253-4320

2007

27

12

48-51

10.16606/j.cnki.issn0253-4320.2007.12.015

湖南省教育厅基金资助项目（03C422）； 衡阳市科技计划项目（200415）；

本校为第一且通讯机构

介绍了1种通过在换热管内设置可往复运动的丝网来强化传热及防垢的技术方法。以某汽一水换热器为应用对象，试验研究了换热管尺寸为Ф25mm×2．5mm，管内丝网钢丝直径分别为0．5、0．8、1．01mm及不同钢丝间距时换热管的传热和阻力性能。试验结果表明，丝网钢丝直径为1．0mm、钢丝间距为28mm时换热性能最佳。将该丝网应用于汽-水换热器的更新改造，并对改造前后设备的性能参数进行了对比，工业应用结果表明，采用该技术后，可减少设备换热面积约48％，且具有良好的防垢作用。

A technology of wire-grid inside heat exchanger tubes to enhance heat-transfer and foul removal by its reciprocating is introduced. Based on the steam-water heat exchanger, the experiments of heat-transfer performance and flow resistance are carried out, which corresponds to the parameter of the steam-water heat exchanger, the heat-exchange tube dimensions are φ25 mm ×2.5 mm, the wire diameter dimensions are 0.5 mm, 0.8 mm, 1.0 mm, and with different characteristics of heat transfer and flow resistance between steel wires. The result shows the best performance when the wire diameter ...