化学工程2023，Vol.51Issue(12)：10-14,50,6.DOI:10.3969/j.issn.1005-9954.2023.12.003
离子风强化水蒸气与液滴捕获数值研究
Numerical study of water vapor and droplets collection enhanced by ionic wind
摘要
Abstract
For the water recovery needs of the industrial fog emission process,an electrostatic water collection method integrating the air-cooled condensation and electrostatic fog collection processes was proposed,which can achieve the synergistic collection of the water vapor and droplets.The mathematical model for the process coupling the water vapor condensation and electrostatic fog collection processes was established.The mechanism of the ionic wind-enhanced water vapor condensation and the performances of the electrostatic water collectors were investigated numerically.The results show that the heat transfer coefficient of the natural convective on the air side is only 10％of that of the forced convection on the fog side.The ionic wind generated by the needle discharge electrode on the air side forms a local impingement jet,which causes the pulse-like distribution of the local convective heat transfer coefficient with a maximum enhancement of 13 times.Compared with the natural convection on the air side,the ionic wind generated by 7 layers of discharge electrodes on the air side can increase the water vapor collection efficiency by 1.5 times.For the fog and air conditions defined in this paper,the electrostatic water collectors can achieve a maximum a maximum water vapor collection efficiency of 9.2％ and droplet collection efficiency of 97.7％.关键词
静电/离子风/液滴/水蒸气/冷凝Key words
electrostatic/ionic wind/droplets/water vapor/condensation分类
化学化工引用本文复制引用
姜源,刘桂莲,闫孝红..离子风强化水蒸气与液滴捕获数值研究[J].化学工程,2023,51(12):10-14,50,6.基金项目
国家自然科学基金资助项目(51576157) （51576157）
