Effect of Different Types of Structural Configuration on Air Distribution in a Compact Purification Device

• 作者: YANG Xuebin LIANG Le LIU Hao LIU Lin LIANG Zhen WANG Fang
• 来源期刊: 东华大学学报（英文版）
• 学科: 工学
• 年，卷（期）: 2020,（6）
• 页码范围: 483-492
• 页数: 10页
• 分类号: TU83|G640
• 语种: 英文
• DOI: 10.19884/j.1672-5220.202008055

摘要

In some old industrial plants, in order to meet the increasingly strict requirements of pollutant emission limits, it is necessary to install the compact filtration and/or purification devices in a given narrow machine room. Different types of structural configuration might influence air distribution inside these devices. The unreasonable air distribution might lead each part of filtration or purification media to operating at largely different air flow rates. Based on a computational fluid dynamics ( CFD) model, this study explores the influence of different outlet positions and different upper heights on the flow field inside chamber. The porous medium model is employed to simulate the air flow in porous media. The changing structural configurations include three positioning cases of the outlet opening and eight height cases of the upper chamber. The root mean square is defined as the non-uniformity coefficient to evaluate the uniformity of air flow distribution. The results show that the farther distance between inlet and outlet openings will bring more uniform air distribution, and the increasing height of upper chamber totally trends to exhibit more uniform air distribution.