The influence of nozzle height on the cleaning performance of inner cone double-layer filter cartridges with different cone radius through the distributional characterization of peak static pressure

The inner cone double-layer filter cartridges have the capability to guide the flow, which can optimize the airflow distribution inside the cartridge and reduce the cartridge's incomplete cleaning. However, the selection of different cone radius and nozzle heights can affect the cartridge's cleaning performance. More thorough investigations of the static pressure distribution properties within double-layer cartridges are required to improve their design and optimization. The results show that double-layer cartridges' peak static pressure at different nozzle heights has a similar distribution law. Peak static pressure increases progressively with cartridge height in the middle and lower sections (OM3-OM5, IM2-IM5), with the lower section having a larger peak static pressure. The cleaning performance of cartridges with a cone radius of R >= 80 mm is little impacted by the nozzle height. The stability of the cartridge's cleaning performance improves and then deteriorates as the cone radius increases, with the best cleaning effect and stability reached at R = 80 mm. In practical applications, double-layer filter cartridges with larger cone radius should be considered.