沙尘分析及等离子空气清洁系统沙尘去除效果的评价(英文)

Analysis of Yellow Sand Dust and Performance Evaluation of Plasma Air Cleaning Systems for Removing Yellow Sand Dust

本研究对在中国和韩国采集的沙尘的粒径分布及质量浓度进行了测定,使用黄沙标准物质对基于静电沉降原理的等离子空气清洁系统的去除沙尘效率进行了评价。本研究所使用的黄沙采集于北京和汉城,其粒径中值在7.0～80μm之间,浓度范围为300～1462μg·m-3。在单通道测试中,沙尘去除效果随粒径增大和流速降低而增加。系统速度为1.0m·s-1时,去除率大于80%。在27m2的房间中,进行多通道测试时,浓度为300μg·m-3的大气颗粒物仅用10min即可降至150μg·m-3。因此,等离子空气清洁系统能够有效地去除沙尘及保持室内空气质量。

The size distribution and mass concentration of Yellow sand dust observed in China and Korea are analyzed, and the removal efficiency of a plasma air cleaning system based on the principle of electrostatic precipitation is evaluated for improving indoor air quality. Mass median diameter of Yellow sand dust sampled in Beijing and Seoul ranges from 7.0 to 8.0 μm with the mass concentration of 300～\{1 462\} μg\5m-3. For the single\|pass test, the efficiency of dust removal increases with increasing particle size and decreasing flow rate. The removal efficiency of Yellow sand dust in the plasma air cleaning system at the face velocity of 1.0 m\5s\+\{-1\} is larger than 80%. For the multi\|pass test in occupied spaces, the operation time required to reduce Yellow sand dust concentration from the initial concentration of 300 μg\5m-3 to 150 μg\5m-3, the criteria of indoor air quality, is 10 minutes for the test room of 27 m3. The plasma air cleaning system is suitable for the removal of Yellow sand dust for maintaining suitable indoor air quality.