卷烟车间空调回风过滤用毛绒滤料的过滤性能

Filtration Performances of Fabrics for Recirculated Air from Air Conditioning System in Manufacturing Department

为研究新型毛绒滤料应用于卷烟车间空调系统过滤段时,对空调回风的净化效果,分析了不同型号毛绒滤料对空调回风粉尘的过滤特性及其影响因素。结果表明:1长毛绒滤料过滤效率受过滤风速的影响较为显著,过滤效率分布的标准差高达21.4%;过滤风速变化时,短毛绒滤料的过滤效率较稳定,过滤效率分布的标准差最高为5.2%。2粉尘浓度对两种毛绒滤料的运行阻力的影响均不明显。3短毛绒滤料平均容尘量359.2 g/m2,小于长毛绒滤料平均容尘量707.1 g/m2。尽管短毛绒滤料容尘量较小,但其过滤阻力、过滤风速变化时过滤效率的稳定性、粉尘浓度变化时过滤阻力的稳定性等性能指标均优于长毛绒滤料。

In order to assess the cleaning effects of new flocked filter fabrics on the recirculated air from air conditioning system in cigarette manufacturing department, two fabrics of different types were tested and their influencing factors were analyzed. The results showed that： 1） The filtration efficiency of pile fabric was influenced by air velocity more significantly with a standard deviation of filtration efficiency distribution of 21.4%. The filtration efficiency of nap fabric was less affected by air velocity fluctuation, and its highest standard deviation of filtration efficiency distribution was 5.2%. 2） Dust concentration did not affect the running resistance of the two filtration fabrics significantly. 3） The average dust retentivities of nap fabric and pile fabric were 359.2 and 707.1 g/m2, respectively. Though lower in dust retentivity, nap fabric was considered to be more applicable due to its advantages of lower filtration resistance and higher stabilities of filtration efficiency and filtration resistance when air velocity or dust concentration fluctuated.