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I write about how common industrial air compressor types work and how they are selected. My articles explain centrifugal and rotary screw compressors, connecting their operating principles with the performance and maintenance questions readers should consider when comparing equipment for a particular duty.
How Centrifugal Air Compressors Work: Engineering Principles, Types, and Selection Criteria
Quick Specs: Centrifugal Air Compressor Compressor Type Dynamic (centrifugal / turbo) Typical Capacity 400–100,000+ CFM Discharge Pressure 80–150 PSI (multi-stage) Isentropic Efficiency 70–85% at design point Air Purity ISO 8573-1 Class 0 (oil-free) Typical Overhaul Interval 30,000–40,000 operating hours Major…
Rotary Screw Air Compressor: How It Works, How to Choose, and How to Maintain It
Quick Specs: Rotary Screw Air Compressors Compression Type Twin-screw positive displacement Typical Pressure Range 100–150 psi (7–10 bar) Capacity Range 5–500+ hp / 20–2,500+ cfm Duty Cycle 100% continuous Noise Level (Enclosed) 65–75 dBA Oil Change Interval 4,000–8,000 hours E×pected…
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