文档介绍：化工进展
2008 年第 27 卷第 4 期 CHEMICAL INDUSTRY AND ENGINEERING PROGRESS ·573·
离心浮力对折流栅-螺旋槽管换热器传热性能的影响
马有福,袁益超,李静芬,周文铸,胡晓红
(上海理工大学动力工程学院,上海 200093)

摘要:由流体径向温度梯度引起的离心浮力对旋流强化传热效果有重要影响。通过管程与壳程均有旋转流动的
折流栅-螺旋槽管水-水换热器,就离心浮力对旋流强化传热效果的影响进行了管、壳程冷、热流体交换的对比实
验研究。结果表明:在相同的管、壳程流速下热流体在壳程时换热器总传热系数比热流体在管程时相对高出约 33%。
故在有旋流存在的管壳式换热器中,离心浮力对换热器传热性能的影响不可忽视。当热阻较大一侧有旋流存在时,
离心浮力对换热器传热性能的影响更为明显。
关键词:管壳式换热器;强化传热;旋流;离心浮力;螺旋槽管;折流栅
中图分类号:TK 文献标识码:A 文章编号:1000–6613(2008)04–0573–04

Influence of centrifugal buoyancy on the heat transfer performance of
tube-shell heat exchanger with rod baffle and spiral fluted tube

MA Youfu,YUAN Yichao,LI Jingfen,ZHOU Wenzhu,HU Xiaohong
(College of Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

Abstract:Centrifugal buoyancy arising from radial temperature gradient of fluid has a great influence on the
enhanced heat transfer performance of swirling flow. An parative investigation on the
influence of centrifugal buoyancy on the heat transfer enhancement of swirling flow was carried out via
exchanging hot and cool water in shell-side and tube-side respectively in a swirling flow tube-shell heat
exchanger,in which heat transfer was enhanced by spiral fluted tubes and rod baffles. The results showed that
the total heat transfer coefficient of heat exchanger with hot water arr