加填料饱和器传热传质模型研究  

Heat and Mass Transfer Model of Packed Saturator

作　　者：邱超[1] 宋华芬[1] 刘春琪[1] 

机构地区：[1]上海交通大学叶轮机械研究所,上海市徐汇区200030

出　　处：《中国电机工程学报》2010年第5期87-91,共5页Proceedings of the CSEE

基　　金：国家重点基础研究发展计划项目(973项目)(2007CB210102)~~

摘　　要：从水气之间的传热传质原理入手,引入水膜模型,建立加填料饱和器的数学模型。将模型的计算结果与实验结果进行了对比,验证了加填料饱和器数学模型的正确性。应用该数学模型分析了压力变化对加填料饱和器传热传质的影响,同时讨论了沿加填料饱和器高度方向的传热传质过程。研究发现,随着饱和器内工作压力的增大,饱和器出口空气更容易达到饱和,但空气的绝对湿度降低了;并且在整个传热传质过程中,质量一直从水膜传向空气主体,而热量的传递方向则有可能发生改变。A packed saturator mathematical model based on the water film theory was established.Compared with the experimental results,the model was proved to be effective.The influence of the working pressure on the heat and mass transfer was analyzed by this model,and the detailed process was investigated.It is found that,with the increasing in the packed saturator＇s working pressure,the outlet air can be easier saturated,but the absolute humidity of the outlet air decreases.And in the heat and mass transfer process,the mass will be transferred from the water film to the air all the time,while the heat transfer direction is likely to be changed.

关 键 词：水膜理论 加填料饱和器 传热传质 数学模型 

分 类 号：TK224[动力工程及工程热物理—动力机械及工程]