填料加湿器内部通道传热传质特性的数值研究  

Numerical Investigation of Heat and Mass Transfer Characteristics within Narrow Channel in Humidifier

作　　者：刘允 韩东[1] 何纬峰[1] 司泽田 LIU Yun;HAN Dong;HE Weifeng;SI Zetian(College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学能源与动力学院,江苏南京210016

出　　处：《机械制造与自动化》2021年第6期99-102,共4页Machine Building & Automation

基　　金：中央高校基本科研业务费专项资金资助项目(NP2018107,NG2020007)。

摘　　要：采用一种新的二维模型对加湿器填料内水和湿空气直接接触传热传质过程进行数值研究,研究结构参数、进气速度和湿度对传热传质的影响,应用渗透传质理论精准预测水蒸气浓度场。结果表明:出口水蒸气的质量分数随进气速度增加而降低,随进气湿度增加而增加。基于结构参数改进得出最优填料通道结构。A new two-dimensional model is used to study heat and mass transfer process of direct contact between water and wet air in the packing of humidifier.The effects of structure parameters,inlet velocity and humidity on heat and mass transfer are discussed.The penetration mass transfer theory is applied to predict the water vapor concentration field with accuracy.The results show that the mass fraction of water vapor in the outlet decreases with the increase of inlet velocity and increases with the increase of inlet humidity,and the optimal structure is obtained based on the improvement of structural parameters.

关 键 词：加湿器 填料 加湿过程 计算流体力学 渗透传质理论 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]