Performance Optimization Of Airliner Cabin Air Filters

This study aims to design a cabin air filter with a high dust loading performance that is suitable for functioning under haze conditions. A longitudinal comparison study was carried out on the initial filtration performance and resistance change rate during the dust holding process of real cabin air filters with different structures (V-shape, Cylinder and Pleat-Plate filters). It was found that the Cylinder filter was better than the other two in terms of the initial quality factor and resistance change rate during operation. Based on the measured data, a calculation model was developed to predict the service life of the filter. The Cylinder filter shows a service life that is 17% longer than that of the V-shape filter. The energy consumption of the Cylinder filter over 6000 flight hours is lower than that of the V-shape and Pleat-Plate filters. Through the flow field analysis based on the filter structure, a preliminary qualitative analysis of the difference in filter performance is provided. For the Cylinder filter, the airflow steering and unique pleat structure enhance the dust holding capacity. We believe that the Cylinder filter is more suitable for areas with a high PM10 concentration in the atmospheric environment, such as China.