用螺旋槽管强化溴化锂降膜式发生器传热传质的研究  

RESEARCH ON ENHANCEMENT OF HEAT AND MASS TRANSFER OF LITHIUM BROMIDE FALLING FILM GENERATOR BY SWIRL GROOVE TUBE

作　　者：王长庆[1] 虞洁莉[1] 

机构地区：[1]同济大学

出　　处：《制冷与空调》2004年第6期23-26,共4页Refrigeration and Air-Conditioning

摘　　要：热源温度较低时 ,在溴化锂吸收式制冷机或热泵中使用降膜式发生器可以改善传热传质的性能。如何用强化管对降膜式发生器的传热传质进行强化是本文所关注的。文中对螺旋槽管进行了实验 ,并对结果进行了分析 ,最后得出了结论。When the temperature of heat source is relatively low,the falling film generator in the lithium bromide absorption machine can improve its heat and mass transfer performance.And how to apply some enhancing surface in the falling film generator to augment the heat and mass transfer outside the tube is what we exactly want to make research.In the paper,the experiment is processed with smooth tube and swirl groove tube in the lithium bromide falling film generator.By analyzing the results of the experiment,we know that the swirl groove tube can enhance its heat and mass transfer.

关 键 词：螺旋槽管 降膜 传热传质 膜式 强化管 热泵 溴化锂 发生器 性能 改善 

分 类 号：TB65[一般工业技术—制冷工程]