03-09-2016, 10:10 AM
1452241892-AirCompressors.pdf (Size: 1.06 MB / Downloads: 28)
Two Types
Positive Displacement
– Reciprocating
– Rotary Screw
• Dynamic
– Centrifugal
– Axial flow
Rotary Screw Compressors
“Direct Injection”, “Oil-injected”, “Directcooled”,
“Flooded”
– Various names are suggestive of the direct contact
of lubricating/cooling oil onto the rotating screw
parts
– Requires a separator just after compression to
remove oil from the compressed air
• “Oil-free”, “Oil-less”, “Dry” compressors also
available (food industry, hospitals, etc.)