溴化锂降膜式发生器的传热传质研究  

Heat and Mass Transfer in Falling Film Generator with Lithium Bromide Water Solution

作　　者：陆震[1] 王长庆[1] 尉迟斌[1] 

机构地区：[1]上海交通大学制冷工程研究所

出　　处：《制冷学报》1997年第1期13-19,共7页Journal of Refrigeration

基　　金：国家教委博士点专项基金

摘　　要：对于使用低温热源的溴化锂吸收式制冷机，可以采用降膜式发生器改善传热传质，提高机组的性能。本文提出了一个水平管束构成的降膜式发生器的数学模型，求得了传热传质特性的数值解，并以热水为热源对一个由８排水平管构成的发生器模型进行了试验研究，数值解和试验结果吻合程度较好，通过分析得出了有益于降膜式发生器传热传质的一些结论。In the lithium bromide absorption refrigerating machine for low grade heat sources,the falling film generator will be used to improve the heat and mass transfer in the generator and to raise the performance of the machine.In the paper a mathematical model of the falling film generator with horizontal tubes is established and solved with numerical method.At the same time,a test system which contains a generator model with eight rows of horizontal tubes is built for the experimental research in the case of using hot water as heat source.The numericalsolutions are well consistent with the experimental result.Some useful conclutions are obtained.

关 键 词：降膜式发生器 传热 传质 溴化锂 吸收式 制冷机 

分 类 号：TB651[一般工业技术—制冷工程] TB611