March 2022

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Reliability: Use available database to assist in compressor design audits and selection

Over the last 40 yr, centrifugal compressor manufacturers have compiled a vast array of impellers and associated stationary components, allowing for higher efficiency staging.

Bloch, Heinz P., Hydrocarbon Processing Staff

Over the last 40 yr, centrifugal compressor manufacturers have compiled a vast array of impellers and associated stationary components, allowing for higher efficiency staging. Within this array, different families of impellers and stationary parts allow application engineers to make selections to match various process conditions. They have achieved this through newer and more sophisticated machining technologies, and by consistently using more accurate computational fluid dynamic (CFD) analyses. However, even with these advanced technologies, the matching of internals such as diffusers and return channels with new and improved impellers can be difficult. In instances where trial and error mu

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