Application of open impellers in centrifugal air compressors
CD Centrifugal Impeller Application of open impellers in centrifugal air compressors I’ve been buying and managing rotating equipment for over 15 years, and if there’s one component that still sparks fierce debate among my engineering team and suppliers, it’s the impeller. When you’re sourcing a centrifugal air compressor for a plant that isn’t sipping perfectly clean indoor air, the question quickly becomes: should we go closed, semi-open, or full open impeller? I learned my lesson the hard way back in 2016. We installed two identical-stage centrifugal compressors at a cement plant, both drawing ambient air from a quarry-side intake. One unit had closed impellers, the other had open impellers. Within four months, the closed-impeller machine was down on